from __future__ import annotations

import asyncio
import inspect
import json
import logging
import mimetypes
import os
import random
import re
import shutil
import sys
import time
from contextlib import asynccontextmanager
from typing import Optional
from urllib.parse import parse_qs, urlencode, urlparse
from uuid import uuid4

import aiohttp
import anyio.to_thread
from aiocache import cached
from fastapi import (
    BackgroundTasks,
    Depends,
    FastAPI,
    File,
    Form,
    HTTPException,
    Request,
    UploadFile,
    applications,
    status,
)
from fastapi.middleware.cors import CORSMiddleware
from fastapi.openapi.docs import get_swagger_ui_html
from fastapi.responses import FileResponse, JSONResponse, RedirectResponse
from fastapi.staticfiles import StaticFiles
from pydantic import BaseModel
from redis import Redis
from sqlalchemy import text
from sqlalchemy.ext.asyncio import AsyncSession
from starlette.datastructures import Headers
from starlette.exceptions import HTTPException as StarletteHTTPException
from starlette.middleware.sessions import SessionMiddleware
from starlette.responses import Response, StreamingResponse
from starlette_compress import CompressMiddleware
from starsessions import (
    SessionAutoloadMiddleware,
)
from starsessions import (
    SessionMiddleware as StarSessionsMiddleware,
)
from starsessions.stores.redis import RedisStore

from open_webui.config import (
    ADMIN_EMAIL,
    API_KEYS_ALLOWED_ENDPOINTS,
    AUDIO_STT_ALLOWED_EXTENSIONS,
    AUDIO_STT_AZURE_API_KEY,
    AUDIO_STT_AZURE_BASE_URL,
    AUDIO_STT_AZURE_LOCALES,
    AUDIO_STT_AZURE_MAX_SPEAKERS,
    AUDIO_STT_AZURE_REGION,
    # Audio
    AUDIO_STT_ENGINE,
    AUDIO_STT_MISTRAL_API_BASE_URL,
    AUDIO_STT_MISTRAL_API_KEY,
    AUDIO_STT_MISTRAL_USE_CHAT_COMPLETIONS,
    AUDIO_STT_MODEL,
    AUDIO_STT_OPENAI_API_BASE_URL,
    AUDIO_STT_OPENAI_API_KEY,
    AUDIO_STT_SUPPORTED_CONTENT_TYPES,
    AUDIO_TTS_API_KEY,
    AUDIO_TTS_AZURE_SPEECH_BASE_URL,
    AUDIO_TTS_AZURE_SPEECH_OUTPUT_FORMAT,
    AUDIO_TTS_AZURE_SPEECH_REGION,
    AUDIO_TTS_ENGINE,
    AUDIO_TTS_MISTRAL_API_BASE_URL,
    AUDIO_TTS_MISTRAL_API_KEY,
    AUDIO_TTS_MODEL,
    AUDIO_TTS_OPENAI_API_BASE_URL,
    AUDIO_TTS_OPENAI_API_KEY,
    AUDIO_TTS_OPENAI_PARAMS,
    AUDIO_TTS_SPLIT_ON,
    AUDIO_TTS_VOICE,
    AUTOCOMPLETE_GENERATION_INPUT_MAX_LENGTH,
    AUTOCOMPLETE_GENERATION_PROMPT_TEMPLATE,
    # Image
    AUTOMATIC1111_API_AUTH,
    AUTOMATIC1111_BASE_URL,
    AUTOMATIC1111_PARAMS,
    AUTOMATION_MAX_COUNT,
    AUTOMATION_MIN_INTERVAL,
    BING_SEARCH_V7_ENDPOINT,
    BING_SEARCH_V7_SUBSCRIPTION_KEY,
    BOCHA_SEARCH_API_KEY,
    BRAVE_SEARCH_API_KEY,
    BRAVE_SEARCH_CONTEXT_TOKENS,
    BYPASS_ADMIN_ACCESS_CONTROL,
    BYPASS_EMBEDDING_AND_RETRIEVAL,
    BYPASS_WEB_SEARCH_EMBEDDING_AND_RETRIEVAL,
    BYPASS_WEB_SEARCH_WEB_LOADER,
    CACHE_DIR,
    CHUNK_MIN_SIZE_TARGET,
    CHUNK_OVERLAP,
    CHUNK_SIZE,
    CODE_EXECUTION_ENGINE,
    CODE_EXECUTION_JUPYTER_AUTH,
    CODE_EXECUTION_JUPYTER_AUTH_PASSWORD,
    CODE_EXECUTION_JUPYTER_AUTH_TOKEN,
    CODE_EXECUTION_JUPYTER_TIMEOUT,
    CODE_EXECUTION_JUPYTER_URL,
    CODE_INTERPRETER_ENGINE,
    CODE_INTERPRETER_JUPYTER_AUTH,
    CODE_INTERPRETER_JUPYTER_AUTH_PASSWORD,
    CODE_INTERPRETER_JUPYTER_AUTH_TOKEN,
    CODE_INTERPRETER_JUPYTER_TIMEOUT,
    CODE_INTERPRETER_JUPYTER_URL,
    CODE_INTERPRETER_PROMPT_TEMPLATE,
    COMFYUI_API_KEY,
    COMFYUI_BASE_URL,
    COMFYUI_WORKFLOW,
    COMFYUI_WORKFLOW_NODES,
    CONTENT_EXTRACTION_ENGINE,
    CORS_ALLOW_ORIGIN,
    DATALAB_MARKER_ADDITIONAL_CONFIG,
    DATALAB_MARKER_API_BASE_URL,
    DATALAB_MARKER_API_KEY,
    DATALAB_MARKER_DISABLE_IMAGE_EXTRACTION,
    DATALAB_MARKER_FORCE_OCR,
    DATALAB_MARKER_FORMAT_LINES,
    DATALAB_MARKER_OUTPUT_FORMAT,
    DATALAB_MARKER_PAGINATE,
    DATALAB_MARKER_SKIP_CACHE,
    DATALAB_MARKER_STRIP_EXISTING_OCR,
    DATALAB_MARKER_USE_LLM,
    DDGS_BACKEND,
    DEEPGRAM_API_KEY,
    DEFAULT_ARENA_MODEL,
    DEFAULT_GROUP_ID,
    DEFAULT_LOCALE,
    DEFAULT_MODEL_METADATA,
    DEFAULT_MODEL_PARAMS,
    DEFAULT_MODELS,
    DEFAULT_PINNED_MODELS,
    DEFAULT_PROMPT_SUGGESTIONS,
    DEFAULT_RAG_TEMPLATE,
    DEFAULT_USER_ROLE,
    DOCLING_API_KEY,
    DOCLING_PARAMS,
    DOCLING_SERVER_URL,
    DOCUMENT_INTELLIGENCE_ENDPOINT,
    DOCUMENT_INTELLIGENCE_KEY,
    DOCUMENT_INTELLIGENCE_MODEL,
    ENABLE_ADMIN_ANALYTICS,
    # Admin
    ENABLE_ADMIN_CHAT_ACCESS,
    ENABLE_ADMIN_EXPORT,
    ENABLE_API_KEYS,
    ENABLE_API_KEYS_ENDPOINT_RESTRICTIONS,
    ENABLE_ASYNC_EMBEDDING,
    ENABLE_AUTOCOMPLETE_GENERATION,
    ENABLE_AUTOMATIONS,
    # Model list
    ENABLE_BASE_MODELS_CACHE,
    ENABLE_CALENDAR,
    ENABLE_CHANNELS,
    # Code Execution
    ENABLE_CODE_EXECUTION,
    ENABLE_CODE_INTERPRETER,
    ENABLE_COMMUNITY_SHARING,
    # Direct Connections
    ENABLE_DIRECT_CONNECTIONS,
    ENABLE_EVALUATION_ARENA_MODELS,
    ENABLE_FOLDERS,
    ENABLE_FOLLOW_UP_GENERATION,
    ENABLE_GOOGLE_DRIVE_INTEGRATION,
    ENABLE_IMAGE_EDIT,
    ENABLE_IMAGE_GENERATION,
    ENABLE_IMAGE_PROMPT_GENERATION,
    # WebUI (LDAP)
    ENABLE_LDAP,
    ENABLE_LDAP_GROUP_CREATION,
    # LDAP Group Management
    ENABLE_LDAP_GROUP_MANAGEMENT,
    ENABLE_LOGIN_FORM,
    ENABLE_MARKDOWN_HEADER_TEXT_SPLITTER,
    ENABLE_MEMORIES,
    ENABLE_MESSAGE_RATING,
    ENABLE_NOTES,
    # WebUI (OAuth)
    ENABLE_OAUTH_ROLE_MANAGEMENT,
    # Ollama
    ENABLE_OLLAMA_API,
    ENABLE_ONEDRIVE_BUSINESS,
    ENABLE_ONEDRIVE_INTEGRATION,
    ENABLE_ONEDRIVE_PERSONAL,
    # OpenAI
    ENABLE_OPENAI_API,
    ENABLE_PASSWORD_CHANGE_FORM,
    ENABLE_RAG_HYBRID_SEARCH,
    ENABLE_RAG_HYBRID_SEARCH_ENRICHED_TEXTS,
    ENABLE_RAG_LOCAL_WEB_FETCH,
    ENABLE_RETRIEVAL_QUERY_GENERATION,
    ENABLE_SEARCH_QUERY_GENERATION,
    ENABLE_SIGNUP,
    ENABLE_TAGS_GENERATION,
    ENABLE_TITLE_GENERATION,
    ENABLE_USER_STATUS,
    ENABLE_USER_WEBHOOKS,
    ENABLE_VOICE_MODE_PROMPT,
    ENABLE_WEB_LOADER_SSL_VERIFICATION,
    # Retrieval (Web Search)
    ENABLE_WEB_SEARCH,
    # Misc
    ENV,
    EVALUATION_ARENA_MODELS,
    EXA_API_KEY,
    EXTERNAL_DOCUMENT_LOADER_API_KEY,
    EXTERNAL_DOCUMENT_LOADER_URL,
    EXTERNAL_WEB_LOADER_API_KEY,
    EXTERNAL_WEB_LOADER_URL,
    EXTERNAL_WEB_SEARCH_API_KEY,
    EXTERNAL_WEB_SEARCH_URL,
    FILE_IMAGE_COMPRESSION_HEIGHT,
    FILE_IMAGE_COMPRESSION_WIDTH,
    FIRECRAWL_API_BASE_URL,
    FIRECRAWL_API_KEY,
    FIRECRAWL_TIMEOUT,
    FOLDER_MAX_FILE_COUNT,
    FOLLOW_UP_GENERATION_PROMPT_TEMPLATE,
    FRONTEND_BUILD_DIR,
    GOOGLE_DRIVE_API_KEY,
    GOOGLE_DRIVE_CLIENT_ID,
    GOOGLE_PSE_API_KEY,
    GOOGLE_PSE_ENGINE_ID,
    IFRAME_CSP,
    IMAGE_EDIT_ENGINE,
    IMAGE_EDIT_MODEL,
    IMAGE_EDIT_SIZE,
    IMAGE_GENERATION_ENGINE,
    IMAGE_GENERATION_MODEL,
    IMAGE_PROMPT_GENERATION_PROMPT_TEMPLATE,
    IMAGE_SIZE,
    IMAGE_STEPS,
    IMAGES_EDIT_COMFYUI_API_KEY,
    IMAGES_EDIT_COMFYUI_BASE_URL,
    IMAGES_EDIT_COMFYUI_WORKFLOW,
    IMAGES_EDIT_COMFYUI_WORKFLOW_NODES,
    IMAGES_EDIT_GEMINI_API_BASE_URL,
    IMAGES_EDIT_GEMINI_API_KEY,
    IMAGES_EDIT_OPENAI_API_BASE_URL,
    IMAGES_EDIT_OPENAI_API_KEY,
    IMAGES_EDIT_OPENAI_API_VERSION,
    IMAGES_GEMINI_API_BASE_URL,
    IMAGES_GEMINI_API_KEY,
    IMAGES_GEMINI_ENDPOINT_METHOD,
    IMAGES_OPENAI_API_BASE_URL,
    IMAGES_OPENAI_API_KEY,
    IMAGES_OPENAI_API_PARAMS,
    IMAGES_OPENAI_API_VERSION,
    JINA_API_BASE_URL,
    JINA_API_KEY,
    JWT_EXPIRES_IN,
    KAGI_SEARCH_API_KEY,
    LDAP_APP_DN,
    LDAP_APP_PASSWORD,
    LDAP_ATTRIBUTE_FOR_GROUPS,
    LDAP_ATTRIBUTE_FOR_MAIL,
    LDAP_ATTRIBUTE_FOR_USERNAME,
    LDAP_CA_CERT_FILE,
    LDAP_CIPHERS,
    LDAP_SEARCH_BASE,
    LDAP_SEARCH_FILTERS,
    LDAP_SERVER_HOST,
    LDAP_SERVER_LABEL,
    LDAP_SERVER_PORT,
    LDAP_USE_TLS,
    LDAP_VALIDATE_CERT,
    MINERU_API_KEY,
    MINERU_API_MODE,
    MINERU_API_TIMEOUT,
    MINERU_API_URL,
    MINERU_FILE_EXTENSIONS,
    MINERU_PARAMS,
    MISTRAL_OCR_API_BASE_URL,
    MISTRAL_OCR_API_KEY,
    MODEL_ORDER_LIST,
    MOJEEK_SEARCH_API_KEY,
    OAUTH_ADMIN_ROLES,
    OAUTH_ALLOWED_ROLES,
    OAUTH_AUTO_REDIRECT,
    OAUTH_EMAIL_CLAIM,
    OAUTH_PICTURE_CLAIM,
    OAUTH_PROVIDERS,
    OAUTH_ROLES_CLAIM,
    OAUTH_SUB_CLAIM,
    OAUTH_USERNAME_CLAIM,
    OLLAMA_API_CONFIGS,
    OLLAMA_BASE_URLS,
    OLLAMA_CLOUD_WEB_SEARCH_API_KEY,
    ONEDRIVE_CLIENT_ID_BUSINESS,
    ONEDRIVE_CLIENT_ID_PERSONAL,
    ONEDRIVE_SHAREPOINT_TENANT_ID,
    ONEDRIVE_SHAREPOINT_URL,
    OPENAI_API_BASE_URLS,
    OPENAI_API_CONFIGS,
    OPENAI_API_KEYS,
    PADDLEOCR_VL_BASE_URL,
    PADDLEOCR_VL_TOKEN,
    PDF_EXTRACT_IMAGES,
    PDF_LOADER_MODE,
    PENDING_USER_OVERLAY_CONTENT,
    PENDING_USER_OVERLAY_TITLE,
    PERPLEXITY_API_KEY,
    PERPLEXITY_MODEL,
    PERPLEXITY_SEARCH_API_URL,
    PERPLEXITY_SEARCH_CONTEXT_USAGE,
    PLAYWRIGHT_TIMEOUT,
    PLAYWRIGHT_WS_URL,
    QUERY_GENERATION_PROMPT_TEMPLATE,
    RAG_ALLOWED_FILE_EXTENSIONS,
    RAG_AZURE_OPENAI_API_KEY,
    RAG_AZURE_OPENAI_API_VERSION,
    RAG_AZURE_OPENAI_BASE_URL,
    RAG_EMBEDDING_BATCH_SIZE,
    RAG_EMBEDDING_CONCURRENT_REQUESTS,
    RAG_EMBEDDING_ENGINE,
    RAG_EMBEDDING_MODEL,
    RAG_EMBEDDING_MODEL_AUTO_UPDATE,
    RAG_EMBEDDING_MODEL_TRUST_REMOTE_CODE,
    RAG_EXTERNAL_RERANKER_API_KEY,
    RAG_EXTERNAL_RERANKER_TIMEOUT,
    RAG_EXTERNAL_RERANKER_URL,
    RAG_FILE_MAX_COUNT,
    RAG_FILE_MAX_SIZE,
    RAG_FULL_CONTEXT,
    RAG_HYBRID_BM25_WEIGHT,
    RAG_OLLAMA_API_KEY,
    RAG_OLLAMA_BASE_URL,
    RAG_OPENAI_API_BASE_URL,
    RAG_OPENAI_API_KEY,
    RAG_RELEVANCE_THRESHOLD,
    RAG_RERANKING_BATCH_SIZE,
    RAG_RERANKING_ENGINE,
    RAG_RERANKING_MODEL,
    RAG_RERANKING_MODEL_AUTO_UPDATE,
    RAG_RERANKING_MODEL_TRUST_REMOTE_CODE,
    # Retrieval
    RAG_TEMPLATE,
    RAG_TEXT_SPLITTER,
    RAG_TOP_K,
    RAG_TOP_K_RERANKER,
    RESPONSE_WATERMARK,
    SEARCHAPI_API_KEY,
    SEARCHAPI_ENGINE,
    SEARXNG_LANGUAGE,
    SEARXNG_QUERY_URL,
    SERPAPI_API_KEY,
    SERPAPI_ENGINE,
    SERPER_API_KEY,
    SERPLY_API_KEY,
    SERPSTACK_API_KEY,
    SERPSTACK_HTTPS,
    SHOW_ADMIN_DETAILS,
    SOUGOU_API_SID,
    SOUGOU_API_SK,
    STATIC_DIR,
    TAGS_GENERATION_PROMPT_TEMPLATE,
    # Tasks
    TASK_MODEL,
    TASK_MODEL_EXTERNAL,
    TAVILY_API_KEY,
    TAVILY_EXTRACT_DEPTH,
    # Terminal Server
    TERMINAL_SERVER_CONNECTIONS,
    # Thread pool size for FastAPI/AnyIO
    THREAD_POOL_SIZE,
    TIKA_SERVER_URL,
    TIKTOKEN_ENCODING_NAME,
    TITLE_GENERATION_PROMPT_TEMPLATE,
    # Tool Server Configs
    TOOL_SERVER_CONNECTIONS,
    TOOLS_FUNCTION_CALLING_PROMPT_TEMPLATE,
    UPLOAD_DIR,
    USER_PERMISSIONS,
    VOICE_MODE_PROMPT_TEMPLATE,
    WEB_FETCH_MAX_CONTENT_LENGTH,
    WEB_LOADER_CONCURRENT_REQUESTS,
    WEB_LOADER_ENGINE,
    WEB_LOADER_TIMEOUT,
    WEB_SEARCH_CONCURRENT_REQUESTS,
    WEB_SEARCH_DOMAIN_FILTER_LIST,
    WEB_SEARCH_ENGINE,
    WEB_SEARCH_RESULT_COUNT,
    WEB_SEARCH_TRUST_ENV,
    WEBHOOK_URL,
    # WebUI
    WEBUI_AUTH,
    WEBUI_BANNERS,
    WEBUI_NAME,
    WEBUI_URL,
    WHISPER_LANGUAGE,
    WHISPER_MODEL,
    WHISPER_MODEL_AUTO_UPDATE,
    WHISPER_MODEL_DIR,
    WHISPER_VAD_FILTER,
    YACY_PASSWORD,
    YACY_QUERY_URL,
    YACY_USERNAME,
    YANDEX_WEB_SEARCH_API_KEY,
    YANDEX_WEB_SEARCH_CONFIG,
    YANDEX_WEB_SEARCH_URL,
    YOUCOM_API_KEY,
    LINKUP_API_KEY,
    LINKUP_SEARCH_PARAMS,
    YOUTUBE_LOADER_LANGUAGE,
    YOUTUBE_LOADER_PROXY_URL,
    AppConfig,
    async_reset_config,
    reset_config,
)
from open_webui.constants import ERROR_MESSAGES, TASKS
from open_webui.env import (
    AIOHTTP_CLIENT_SESSION_SSL,
    AUDIT_EXCLUDED_PATHS,
    AUDIT_INCLUDED_PATHS,
    AUDIT_LOG_LEVEL,
    BYPASS_MODEL_ACCESS_CONTROL,
    CHANGELOG,
    DEPLOYMENT_ID,
    ENABLE_AUDIT_GET_REQUESTS,
    ENABLE_COMPRESSION_MIDDLEWARE,
    ENABLE_CUSTOM_MODEL_FALLBACK,
    ENABLE_EASTER_EGGS,
    # OAuth Back-Channel Logout
    ENABLE_OAUTH_BACKCHANNEL_LOGOUT,
    ENABLE_OTEL,
    ENABLE_PUBLIC_ACTIVE_USERS_COUNT,
    # SCIM
    ENABLE_SCIM,
    ENABLE_SIGNUP_PASSWORD_CONFIRMATION,
    ENABLE_STAR_SESSIONS_MIDDLEWARE,
    ENABLE_VERSION_UPDATE_CHECK,
    ENABLE_WEBSOCKET_SUPPORT,
    EXTERNAL_PWA_MANIFEST_URL,
    GLOBAL_LOG_LEVEL,
    INSTANCE_ID,
    LICENSE_KEY,
    LOG_FORMAT,
    MAX_BODY_LOG_SIZE,
    # Redis
    REDIS_CLUSTER,
    REDIS_KEY_PREFIX,
    REDIS_URL,
    RESET_CONFIG_ON_START,
    SAFE_MODE,
    SCIM_TOKEN,
    VERSION,
    # Admin Account Runtime Creation
    WEBUI_ADMIN_EMAIL,
    WEBUI_ADMIN_NAME,
    WEBUI_ADMIN_PASSWORD,
    WEBUI_AUTH_SIGNOUT_REDIRECT_URL,
    WEBUI_AUTH_TRUSTED_EMAIL_HEADER,
    WEBUI_AUTH_TRUSTED_NAME_HEADER,
    WEBUI_BUILD_HASH,
    WEBUI_SECRET_KEY,
    WEBUI_SESSION_COOKIE_SAME_SITE,
    WEBUI_SESSION_COOKIE_SECURE,
)
from open_webui.internal.db import ScopedSession, engine, get_async_session
from open_webui.models.chats import ChatForm, Chats
from open_webui.models.functions import Functions
from open_webui.models.models import Models
from open_webui.models.users import UserModel, Users
from open_webui.routers import (
    analytics,
    audio,
    auths,
    automations,
    calendar,
    channels,
    chats,
    configs,
    evaluations,
    files,
    folders,
    functions,
    groups,
    images,
    knowledge,
    memories,
    models,
    notes,
    ollama,
    openai,
    pipelines,
    prompts,
    retrieval,
    scim,
    skills,
    tasks,
    terminals,
    tools,
    users,
    utils,
)
from open_webui.routers.retrieval import (
    get_ef,
    get_embedding_function,
    get_reranking_function,
    get_rf,
)
from open_webui.socket.main import (
    MODELS,
    get_event_emitter,
    get_models_in_use,
    get_user_id_from_session_pool,
    periodic_session_pool_cleanup,
    periodic_usage_pool_cleanup,
)
from open_webui.socket.main import (
    app as socket_app,
)
from open_webui.tasks import (
    cleanup_task,
    create_task,
    has_active_tasks,
    list_task_ids_by_item_id,
    list_tasks,
    redis_task_command_listener,
    stop_item_tasks,
    stop_task,
)  # Import from tasks.py
from open_webui.utils import logger
from open_webui.utils.actions import chat_action as chat_action_handler
from open_webui.utils.asgi_middleware import (
    AuthTokenMiddleware,
    CommitSessionMiddleware,
    RedirectMiddleware,
    WebsocketUpgradeGuardMiddleware,
)
from open_webui.utils.audit import AuditLevel, AuditLoggingMiddleware
from open_webui.utils.auth import (
    create_admin_user,
    decode_token,
    get_admin_user,
    get_http_authorization_cred,
    get_license_data,
    get_verified_user,
)
from open_webui.utils.chat import (
    chat_completed as chat_completed_handler,
)
from open_webui.utils.chat import (
    generate_chat_completion as chat_completion_handler,
)
from open_webui.utils.embeddings import generate_embeddings
from open_webui.utils.logger import start_logger
from open_webui.utils.middleware import (
    build_chat_response_context,
    process_chat_payload,
    process_chat_response,
)
from open_webui.utils.models import (
    check_model_access,
    get_all_base_models,
    get_all_models,
    get_filtered_models,
)
from open_webui.utils.oauth import (
    OAuthClientInformationFull,
    OAuthClientManager,
    OAuthManager,
    decrypt_data,
    encrypt_data,
    get_oauth_client_info_with_dynamic_client_registration,
    get_oauth_client_info_with_static_credentials,
    resolve_oauth_client_info,
)
from open_webui.utils.plugin import install_tool_and_function_dependencies
from open_webui.utils.redis import get_redis_client, get_redis_connection
from open_webui.utils.security_headers import SecurityHeadersMiddleware
from open_webui.utils.session_pool import get_session
from open_webui.utils.tools import set_terminal_servers, set_tool_servers

if SAFE_MODE:
    print('SAFE MODE ENABLED')
    # Functions.deactivate_all_functions() is awaited in lifespan below

logging.basicConfig(stream=sys.stdout, level=GLOBAL_LOG_LEVEL)
log = logging.getLogger(__name__)


class SPAStaticFiles(StaticFiles):
    async def get_response(self, path: str, scope):
        try:
            return await super().get_response(path, scope)
        except (HTTPException, StarletteHTTPException) as ex:
            if ex.status_code == 404:
                if path.endswith('.js'):
                    # Return 404 for javascript files
                    raise ex
                else:
                    return await super().get_response('index.html', scope)
            else:
                raise ex


if LOG_FORMAT != 'json':
    banner = rf"""
 ██████╗ ██████╗ ███████╗███╗   ██╗    ██╗    ██╗███████╗██████╗ ██╗   ██╗██╗
██╔═══██╗██╔══██╗██╔════╝████╗  ██║    ██║    ██║██╔════╝██╔══██╗██║   ██║██║
██║   ██║██████╔╝█████╗  ██╔██╗ ██║    ██║ █╗ ██║█████╗  ██████╔╝██║   ██║██║
██║   ██║██╔═══╝ ██╔══╝  ██║╚██╗██║    ██║███╗██║██╔══╝  ██╔══██╗██║   ██║██║
╚██████╔╝██║     ███████╗██║ ╚████║    ╚███╔███╔╝███████╗██████╔╝╚██████╔╝██║
 ╚═════╝ ╚═╝     ╚══════╝╚═╝  ╚═══╝     ╚══╝╚══╝ ╚══════╝╚═════╝  ╚═════╝ ╚═╝


v{VERSION} - building the best AI user interface.
{f'Commit: {WEBUI_BUILD_HASH}' if WEBUI_BUILD_HASH != 'dev-build' else ''}
https://github.com/open-webui/open-webui
"""
    try:
        print(banner)
    except UnicodeEncodeError:
        # Stdout can't encode the box-drawing banner (Windows cp1252, redirected/headless stdout); fall back to ASCII.
        print(f'Open WebUI v{VERSION} - building the best AI user interface.\nhttps://github.com/open-webui/open-webui')


@asynccontextmanager
async def lifespan(app: FastAPI):
    # Store reference to main event loop for sync->async calls (e.g., embedding generation)
    # This allows sync functions to schedule work on the main loop without blocking health checks
    app.state.main_loop = asyncio.get_running_loop()

    app.state.instance_id = INSTANCE_ID
    start_logger()

    if RESET_CONFIG_ON_START:
        await async_reset_config()

    if LICENSE_KEY:
        get_license_data(app, LICENSE_KEY)

    # Create admin account from env vars if specified and no users exist
    if WEBUI_ADMIN_EMAIL and WEBUI_ADMIN_PASSWORD:
        if await create_admin_user(WEBUI_ADMIN_EMAIL, WEBUI_ADMIN_PASSWORD, WEBUI_ADMIN_NAME):
            # Disable signup since we now have an admin
            app.state.config.ENABLE_SIGNUP = False

    if SAFE_MODE:
        await Functions.deactivate_all_functions()

    # This should be blocking (sync) so functions are not deactivated on first /get_models calls
    # when the first user lands on the / route.
    log.info('Installing external dependencies of functions and tools...')
    await install_tool_and_function_dependencies()

    app.state.redis = get_redis_client(async_mode=True)

    if app.state.redis is not None:
        app.state.redis_task_command_listener = asyncio.create_task(redis_task_command_listener(app))

    if THREAD_POOL_SIZE and THREAD_POOL_SIZE > 0:
        limiter = anyio.to_thread.current_default_thread_limiter()
        limiter.total_tokens = THREAD_POOL_SIZE

    asyncio.create_task(periodic_usage_pool_cleanup())
    asyncio.create_task(periodic_session_pool_cleanup())

    from open_webui.utils.automations import scheduler_worker_loop

    asyncio.create_task(scheduler_worker_loop(app))

    if app.state.config.ENABLE_BASE_MODELS_CACHE:
        try:
            await get_all_models(
                Request(
                    # Creating a mock request object to pass to get_all_models
                    {
                        'type': 'http',
                        'asgi.version': '3.0',
                        'asgi.spec_version': '2.0',
                        'method': 'GET',
                        'path': '/internal',
                        'query_string': b'',
                        'headers': Headers({}).raw,
                        'client': ('127.0.0.1', 12345),
                        'server': ('127.0.0.1', 80),
                        'scheme': 'http',
                        'app': app,
                    }
                ),
                None,
            )
        except Exception as e:
            log.warning(f'Failed to pre-fetch models at startup: {e}')

    # Pre-fetch tool server specs so the first request doesn't pay the latency cost
    if len(app.state.config.TOOL_SERVER_CONNECTIONS) > 0:
        mock_request = Request(
            {
                'type': 'http',
                'asgi.version': '3.0',
                'asgi.spec_version': '2.0',
                'method': 'GET',
                'path': '/internal',
                'query_string': b'',
                'headers': Headers({}).raw,
                'client': ('127.0.0.1', 12345),
                'server': ('127.0.0.1', 80),
                'scheme': 'http',
                'app': app,
            }
        )

        log.info('Initializing tool servers...')
        try:
            await set_tool_servers(mock_request)
            log.info(f'Initialized {len(app.state.TOOL_SERVERS)} tool server(s)')
        except Exception as e:
            log.warning(f'Failed to initialize tool servers at startup: {e}')

        try:
            await set_terminal_servers(mock_request)
            log.info(f'Initialized {len(app.state.TERMINAL_SERVERS)} terminal server(s)')
        except Exception as e:
            log.warning(f'Failed to initialize terminal servers at startup: {e}')

    # Mark application as ready to accept traffic from a startup perspective.
    app.state.startup_complete = True

    yield

    # Shutdown: clean up shared resources
    from open_webui.utils.session_pool import close_session

    await close_session()

    if hasattr(app.state, 'redis_task_command_listener'):
        app.state.redis_task_command_listener.cancel()


app = FastAPI(
    title='Open WebUI',
    docs_url='/docs' if ENV == 'dev' else None,
    openapi_url='/openapi.json' if ENV == 'dev' else None,
    redoc_url=None,
    lifespan=lifespan,
)

# Used by readiness checks to gate traffic until startup work is done.
app.state.startup_complete = False

# For Open WebUI OIDC/OAuth2
oauth_manager = OAuthManager(app)
app.state.oauth_manager = oauth_manager

# For Integrations
oauth_client_manager = OAuthClientManager(app)
app.state.oauth_client_manager = oauth_client_manager

app.state.instance_id = None
app.state.config = AppConfig(
    redis_url=REDIS_URL,
    redis_cluster=REDIS_CLUSTER,
    redis_key_prefix=REDIS_KEY_PREFIX,
)
app.state.redis = None

app.state.WEBUI_NAME = WEBUI_NAME
app.state.LICENSE_METADATA = None


########################################
#
# OPENTELEMETRY
#
########################################

if ENABLE_OTEL:
    from open_webui.utils.telemetry.setup import setup as setup_opentelemetry

    setup_opentelemetry(app=app, db_engine=engine)


########################################
#
# OLLAMA
#
########################################


app.state.config.ENABLE_OLLAMA_API = ENABLE_OLLAMA_API
app.state.config.OLLAMA_BASE_URLS = OLLAMA_BASE_URLS
app.state.config.OLLAMA_API_CONFIGS = OLLAMA_API_CONFIGS

app.state.OLLAMA_MODELS = {}

########################################
#
# OPENAI
#
########################################

app.state.config.ENABLE_OPENAI_API = ENABLE_OPENAI_API
app.state.config.OPENAI_API_BASE_URLS = OPENAI_API_BASE_URLS
app.state.config.OPENAI_API_KEYS = OPENAI_API_KEYS
app.state.config.OPENAI_API_CONFIGS = OPENAI_API_CONFIGS

app.state.OPENAI_MODELS = {}

########################################
#
# TOOL SERVERS
#
########################################

app.state.config.TOOL_SERVER_CONNECTIONS = TOOL_SERVER_CONNECTIONS
app.state.TOOL_SERVERS = []

########################################
#
# TERMINAL SERVER
#
########################################

app.state.config.TERMINAL_SERVER_CONNECTIONS = TERMINAL_SERVER_CONNECTIONS
app.state.TERMINAL_SERVERS = []

########################################
#
# DIRECT CONNECTIONS
#
########################################

app.state.config.ENABLE_DIRECT_CONNECTIONS = ENABLE_DIRECT_CONNECTIONS

########################################
#
# SCIM
#
########################################

app.state.ENABLE_SCIM = ENABLE_SCIM
app.state.SCIM_TOKEN = SCIM_TOKEN

########################################
#
# MODELS
#
########################################

app.state.config.ENABLE_BASE_MODELS_CACHE = ENABLE_BASE_MODELS_CACHE
app.state.BASE_MODELS = []

########################################
#
# WEBUI
#
########################################

app.state.config.WEBUI_URL = WEBUI_URL
app.state.config.ENABLE_SIGNUP = ENABLE_SIGNUP
app.state.config.ENABLE_LOGIN_FORM = ENABLE_LOGIN_FORM
app.state.config.OAUTH_AUTO_REDIRECT = OAUTH_AUTO_REDIRECT
app.state.config.ENABLE_PASSWORD_CHANGE_FORM = ENABLE_PASSWORD_CHANGE_FORM

app.state.config.ENABLE_API_KEYS = ENABLE_API_KEYS
app.state.config.ENABLE_API_KEYS_ENDPOINT_RESTRICTIONS = ENABLE_API_KEYS_ENDPOINT_RESTRICTIONS
app.state.config.API_KEYS_ALLOWED_ENDPOINTS = API_KEYS_ALLOWED_ENDPOINTS

app.state.config.JWT_EXPIRES_IN = JWT_EXPIRES_IN

app.state.config.SHOW_ADMIN_DETAILS = SHOW_ADMIN_DETAILS
app.state.config.ADMIN_EMAIL = ADMIN_EMAIL


app.state.config.DEFAULT_MODELS = DEFAULT_MODELS
app.state.config.DEFAULT_PINNED_MODELS = DEFAULT_PINNED_MODELS
app.state.config.MODEL_ORDER_LIST = MODEL_ORDER_LIST
app.state.config.DEFAULT_MODEL_METADATA = DEFAULT_MODEL_METADATA
app.state.config.DEFAULT_MODEL_PARAMS = DEFAULT_MODEL_PARAMS


app.state.config.DEFAULT_PROMPT_SUGGESTIONS = DEFAULT_PROMPT_SUGGESTIONS
app.state.config.DEFAULT_USER_ROLE = DEFAULT_USER_ROLE
app.state.config.DEFAULT_GROUP_ID = DEFAULT_GROUP_ID

app.state.config.PENDING_USER_OVERLAY_CONTENT = PENDING_USER_OVERLAY_CONTENT
app.state.config.PENDING_USER_OVERLAY_TITLE = PENDING_USER_OVERLAY_TITLE

app.state.config.RESPONSE_WATERMARK = RESPONSE_WATERMARK

app.state.config.USER_PERMISSIONS = USER_PERMISSIONS
app.state.config.WEBHOOK_URL = WEBHOOK_URL
app.state.config.BANNERS = WEBUI_BANNERS


app.state.config.ENABLE_FOLDERS = ENABLE_FOLDERS
app.state.config.FOLDER_MAX_FILE_COUNT = FOLDER_MAX_FILE_COUNT
app.state.config.ENABLE_AUTOMATIONS = ENABLE_AUTOMATIONS
app.state.config.AUTOMATION_MAX_COUNT = AUTOMATION_MAX_COUNT
app.state.config.AUTOMATION_MIN_INTERVAL = AUTOMATION_MIN_INTERVAL
app.state.config.ENABLE_CHANNELS = ENABLE_CHANNELS
app.state.config.ENABLE_CALENDAR = ENABLE_CALENDAR
app.state.config.ENABLE_NOTES = ENABLE_NOTES
app.state.config.ENABLE_COMMUNITY_SHARING = ENABLE_COMMUNITY_SHARING
app.state.config.ENABLE_MESSAGE_RATING = ENABLE_MESSAGE_RATING
app.state.config.ENABLE_USER_WEBHOOKS = ENABLE_USER_WEBHOOKS
app.state.config.ENABLE_USER_STATUS = ENABLE_USER_STATUS

app.state.config.ENABLE_EVALUATION_ARENA_MODELS = ENABLE_EVALUATION_ARENA_MODELS
app.state.config.EVALUATION_ARENA_MODELS = EVALUATION_ARENA_MODELS

# Migrate legacy access_control → access_grants on boot
from open_webui.utils.access_control import has_permission, migrate_access_control

connections = app.state.config.TOOL_SERVER_CONNECTIONS
if any('access_control' in c.get('config', {}) for c in connections):
    for connection in connections:
        migrate_access_control(connection.get('config', {}))
    app.state.config.TOOL_SERVER_CONNECTIONS = connections

arena_models = app.state.config.EVALUATION_ARENA_MODELS
if any('access_control' in m.get('meta', {}) for m in arena_models):
    for model in arena_models:
        migrate_access_control(model.get('meta', {}))
    app.state.config.EVALUATION_ARENA_MODELS = arena_models

app.state.config.OAUTH_SUB_CLAIM = OAUTH_SUB_CLAIM
app.state.config.OAUTH_USERNAME_CLAIM = OAUTH_USERNAME_CLAIM
app.state.config.OAUTH_PICTURE_CLAIM = OAUTH_PICTURE_CLAIM
app.state.config.OAUTH_EMAIL_CLAIM = OAUTH_EMAIL_CLAIM

app.state.config.ENABLE_OAUTH_ROLE_MANAGEMENT = ENABLE_OAUTH_ROLE_MANAGEMENT
app.state.config.OAUTH_ROLES_CLAIM = OAUTH_ROLES_CLAIM
app.state.config.OAUTH_ALLOWED_ROLES = OAUTH_ALLOWED_ROLES
app.state.config.OAUTH_ADMIN_ROLES = OAUTH_ADMIN_ROLES

app.state.config.ENABLE_LDAP = ENABLE_LDAP
app.state.config.LDAP_SERVER_LABEL = LDAP_SERVER_LABEL
app.state.config.LDAP_SERVER_HOST = LDAP_SERVER_HOST
app.state.config.LDAP_SERVER_PORT = LDAP_SERVER_PORT
app.state.config.LDAP_ATTRIBUTE_FOR_MAIL = LDAP_ATTRIBUTE_FOR_MAIL
app.state.config.LDAP_ATTRIBUTE_FOR_USERNAME = LDAP_ATTRIBUTE_FOR_USERNAME
app.state.config.LDAP_APP_DN = LDAP_APP_DN
app.state.config.LDAP_APP_PASSWORD = LDAP_APP_PASSWORD
app.state.config.LDAP_SEARCH_BASE = LDAP_SEARCH_BASE
app.state.config.LDAP_SEARCH_FILTERS = LDAP_SEARCH_FILTERS
app.state.config.LDAP_USE_TLS = LDAP_USE_TLS
app.state.config.LDAP_CA_CERT_FILE = LDAP_CA_CERT_FILE
app.state.config.LDAP_VALIDATE_CERT = LDAP_VALIDATE_CERT
app.state.config.LDAP_CIPHERS = LDAP_CIPHERS

# For LDAP Group Management
app.state.config.ENABLE_LDAP_GROUP_MANAGEMENT = ENABLE_LDAP_GROUP_MANAGEMENT
app.state.config.ENABLE_LDAP_GROUP_CREATION = ENABLE_LDAP_GROUP_CREATION
app.state.config.LDAP_ATTRIBUTE_FOR_GROUPS = LDAP_ATTRIBUTE_FOR_GROUPS


app.state.AUTH_TRUSTED_EMAIL_HEADER = WEBUI_AUTH_TRUSTED_EMAIL_HEADER
app.state.AUTH_TRUSTED_NAME_HEADER = WEBUI_AUTH_TRUSTED_NAME_HEADER
app.state.WEBUI_AUTH_SIGNOUT_REDIRECT_URL = WEBUI_AUTH_SIGNOUT_REDIRECT_URL
app.state.EXTERNAL_PWA_MANIFEST_URL = EXTERNAL_PWA_MANIFEST_URL

app.state.USER_COUNT = None

app.state.TOOLS = {}
app.state.TOOL_CONTENTS = {}

app.state.FUNCTIONS = {}
app.state.FUNCTION_CONTENTS = {}

########################################
#
# RETRIEVAL
#
########################################


app.state.config.TOP_K = RAG_TOP_K
app.state.config.TOP_K_RERANKER = RAG_TOP_K_RERANKER
app.state.config.RELEVANCE_THRESHOLD = RAG_RELEVANCE_THRESHOLD
app.state.config.HYBRID_BM25_WEIGHT = RAG_HYBRID_BM25_WEIGHT


app.state.config.ALLOWED_FILE_EXTENSIONS = RAG_ALLOWED_FILE_EXTENSIONS
app.state.config.FILE_MAX_SIZE = RAG_FILE_MAX_SIZE
app.state.config.FILE_MAX_COUNT = RAG_FILE_MAX_COUNT
app.state.config.FILE_IMAGE_COMPRESSION_WIDTH = FILE_IMAGE_COMPRESSION_WIDTH
app.state.config.FILE_IMAGE_COMPRESSION_HEIGHT = FILE_IMAGE_COMPRESSION_HEIGHT


app.state.config.RAG_FULL_CONTEXT = RAG_FULL_CONTEXT
app.state.config.BYPASS_EMBEDDING_AND_RETRIEVAL = BYPASS_EMBEDDING_AND_RETRIEVAL
app.state.config.ENABLE_RAG_HYBRID_SEARCH = ENABLE_RAG_HYBRID_SEARCH
app.state.config.ENABLE_RAG_HYBRID_SEARCH_ENRICHED_TEXTS = ENABLE_RAG_HYBRID_SEARCH_ENRICHED_TEXTS
app.state.config.ENABLE_WEB_LOADER_SSL_VERIFICATION = ENABLE_WEB_LOADER_SSL_VERIFICATION

app.state.config.CONTENT_EXTRACTION_ENGINE = CONTENT_EXTRACTION_ENGINE
app.state.config.DATALAB_MARKER_API_KEY = DATALAB_MARKER_API_KEY
app.state.config.DATALAB_MARKER_API_BASE_URL = DATALAB_MARKER_API_BASE_URL
app.state.config.DATALAB_MARKER_ADDITIONAL_CONFIG = DATALAB_MARKER_ADDITIONAL_CONFIG
app.state.config.DATALAB_MARKER_SKIP_CACHE = DATALAB_MARKER_SKIP_CACHE
app.state.config.DATALAB_MARKER_FORCE_OCR = DATALAB_MARKER_FORCE_OCR
app.state.config.DATALAB_MARKER_PAGINATE = DATALAB_MARKER_PAGINATE
app.state.config.DATALAB_MARKER_STRIP_EXISTING_OCR = DATALAB_MARKER_STRIP_EXISTING_OCR
app.state.config.DATALAB_MARKER_DISABLE_IMAGE_EXTRACTION = DATALAB_MARKER_DISABLE_IMAGE_EXTRACTION
app.state.config.DATALAB_MARKER_FORMAT_LINES = DATALAB_MARKER_FORMAT_LINES
app.state.config.DATALAB_MARKER_USE_LLM = DATALAB_MARKER_USE_LLM
app.state.config.DATALAB_MARKER_OUTPUT_FORMAT = DATALAB_MARKER_OUTPUT_FORMAT
app.state.config.EXTERNAL_DOCUMENT_LOADER_URL = EXTERNAL_DOCUMENT_LOADER_URL
app.state.config.EXTERNAL_DOCUMENT_LOADER_API_KEY = EXTERNAL_DOCUMENT_LOADER_API_KEY
app.state.config.TIKA_SERVER_URL = TIKA_SERVER_URL
app.state.config.DOCLING_SERVER_URL = DOCLING_SERVER_URL
app.state.config.DOCLING_API_KEY = DOCLING_API_KEY
app.state.config.DOCLING_PARAMS = DOCLING_PARAMS
app.state.config.DOCUMENT_INTELLIGENCE_ENDPOINT = DOCUMENT_INTELLIGENCE_ENDPOINT
app.state.config.DOCUMENT_INTELLIGENCE_KEY = DOCUMENT_INTELLIGENCE_KEY
app.state.config.DOCUMENT_INTELLIGENCE_MODEL = DOCUMENT_INTELLIGENCE_MODEL
app.state.config.MISTRAL_OCR_API_BASE_URL = MISTRAL_OCR_API_BASE_URL
app.state.config.MISTRAL_OCR_API_KEY = MISTRAL_OCR_API_KEY
app.state.config.PADDLEOCR_VL_BASE_URL = PADDLEOCR_VL_BASE_URL
app.state.config.PADDLEOCR_VL_TOKEN = PADDLEOCR_VL_TOKEN
app.state.config.MINERU_API_MODE = MINERU_API_MODE
app.state.config.MINERU_API_URL = MINERU_API_URL
app.state.config.MINERU_API_KEY = MINERU_API_KEY
app.state.config.MINERU_API_TIMEOUT = MINERU_API_TIMEOUT
app.state.config.MINERU_PARAMS = MINERU_PARAMS
app.state.config.MINERU_FILE_EXTENSIONS = MINERU_FILE_EXTENSIONS

app.state.config.TEXT_SPLITTER = RAG_TEXT_SPLITTER
app.state.config.ENABLE_MARKDOWN_HEADER_TEXT_SPLITTER = ENABLE_MARKDOWN_HEADER_TEXT_SPLITTER

app.state.config.TIKTOKEN_ENCODING_NAME = TIKTOKEN_ENCODING_NAME

app.state.config.CHUNK_SIZE = CHUNK_SIZE
app.state.config.CHUNK_MIN_SIZE_TARGET = CHUNK_MIN_SIZE_TARGET
app.state.config.CHUNK_OVERLAP = CHUNK_OVERLAP


app.state.config.RAG_EMBEDDING_ENGINE = RAG_EMBEDDING_ENGINE
app.state.config.RAG_EMBEDDING_MODEL = RAG_EMBEDDING_MODEL
app.state.config.RAG_EMBEDDING_BATCH_SIZE = RAG_EMBEDDING_BATCH_SIZE
app.state.config.ENABLE_ASYNC_EMBEDDING = ENABLE_ASYNC_EMBEDDING
app.state.config.RAG_EMBEDDING_CONCURRENT_REQUESTS = RAG_EMBEDDING_CONCURRENT_REQUESTS

app.state.config.RAG_RERANKING_ENGINE = RAG_RERANKING_ENGINE
app.state.config.RAG_RERANKING_MODEL = RAG_RERANKING_MODEL
app.state.config.RAG_EXTERNAL_RERANKER_URL = RAG_EXTERNAL_RERANKER_URL
app.state.config.RAG_EXTERNAL_RERANKER_API_KEY = RAG_EXTERNAL_RERANKER_API_KEY
app.state.config.RAG_EXTERNAL_RERANKER_TIMEOUT = RAG_EXTERNAL_RERANKER_TIMEOUT
app.state.config.RAG_RERANKING_BATCH_SIZE = RAG_RERANKING_BATCH_SIZE

app.state.config.RAG_TEMPLATE = RAG_TEMPLATE

app.state.config.RAG_OPENAI_API_BASE_URL = RAG_OPENAI_API_BASE_URL
app.state.config.RAG_OPENAI_API_KEY = RAG_OPENAI_API_KEY

app.state.config.RAG_AZURE_OPENAI_BASE_URL = RAG_AZURE_OPENAI_BASE_URL
app.state.config.RAG_AZURE_OPENAI_API_KEY = RAG_AZURE_OPENAI_API_KEY
app.state.config.RAG_AZURE_OPENAI_API_VERSION = RAG_AZURE_OPENAI_API_VERSION

app.state.config.RAG_OLLAMA_BASE_URL = RAG_OLLAMA_BASE_URL
app.state.config.RAG_OLLAMA_API_KEY = RAG_OLLAMA_API_KEY

app.state.config.PDF_EXTRACT_IMAGES = PDF_EXTRACT_IMAGES
app.state.config.PDF_LOADER_MODE = PDF_LOADER_MODE

app.state.config.YOUTUBE_LOADER_LANGUAGE = YOUTUBE_LOADER_LANGUAGE
app.state.config.YOUTUBE_LOADER_PROXY_URL = YOUTUBE_LOADER_PROXY_URL


app.state.config.ENABLE_WEB_SEARCH = ENABLE_WEB_SEARCH
app.state.config.WEB_SEARCH_ENGINE = WEB_SEARCH_ENGINE
app.state.config.WEB_SEARCH_DOMAIN_FILTER_LIST = WEB_SEARCH_DOMAIN_FILTER_LIST
app.state.config.WEB_SEARCH_RESULT_COUNT = WEB_SEARCH_RESULT_COUNT
app.state.config.WEB_SEARCH_CONCURRENT_REQUESTS = WEB_SEARCH_CONCURRENT_REQUESTS
app.state.config.WEB_FETCH_MAX_CONTENT_LENGTH = WEB_FETCH_MAX_CONTENT_LENGTH

app.state.config.WEB_LOADER_ENGINE = WEB_LOADER_ENGINE
app.state.config.WEB_LOADER_CONCURRENT_REQUESTS = WEB_LOADER_CONCURRENT_REQUESTS
app.state.config.WEB_LOADER_TIMEOUT = WEB_LOADER_TIMEOUT

app.state.config.WEB_SEARCH_TRUST_ENV = WEB_SEARCH_TRUST_ENV
app.state.config.BYPASS_WEB_SEARCH_EMBEDDING_AND_RETRIEVAL = BYPASS_WEB_SEARCH_EMBEDDING_AND_RETRIEVAL
app.state.config.BYPASS_WEB_SEARCH_WEB_LOADER = BYPASS_WEB_SEARCH_WEB_LOADER

app.state.config.ENABLE_GOOGLE_DRIVE_INTEGRATION = ENABLE_GOOGLE_DRIVE_INTEGRATION
app.state.config.ENABLE_ONEDRIVE_INTEGRATION = ENABLE_ONEDRIVE_INTEGRATION

app.state.config.OLLAMA_CLOUD_WEB_SEARCH_API_KEY = OLLAMA_CLOUD_WEB_SEARCH_API_KEY
app.state.config.SEARXNG_QUERY_URL = SEARXNG_QUERY_URL
app.state.config.SEARXNG_LANGUAGE = SEARXNG_LANGUAGE
app.state.config.YACY_QUERY_URL = YACY_QUERY_URL
app.state.config.YACY_USERNAME = YACY_USERNAME
app.state.config.YACY_PASSWORD = YACY_PASSWORD
app.state.config.GOOGLE_PSE_API_KEY = GOOGLE_PSE_API_KEY
app.state.config.GOOGLE_PSE_ENGINE_ID = GOOGLE_PSE_ENGINE_ID
app.state.config.BRAVE_SEARCH_API_KEY = BRAVE_SEARCH_API_KEY
app.state.config.BRAVE_SEARCH_CONTEXT_TOKENS = BRAVE_SEARCH_CONTEXT_TOKENS
app.state.config.KAGI_SEARCH_API_KEY = KAGI_SEARCH_API_KEY
app.state.config.MOJEEK_SEARCH_API_KEY = MOJEEK_SEARCH_API_KEY
app.state.config.BOCHA_SEARCH_API_KEY = BOCHA_SEARCH_API_KEY
app.state.config.SERPSTACK_API_KEY = SERPSTACK_API_KEY
app.state.config.SERPSTACK_HTTPS = SERPSTACK_HTTPS
app.state.config.SERPER_API_KEY = SERPER_API_KEY
app.state.config.SERPLY_API_KEY = SERPLY_API_KEY
app.state.config.DDGS_BACKEND = DDGS_BACKEND
app.state.config.TAVILY_API_KEY = TAVILY_API_KEY
app.state.config.SEARCHAPI_API_KEY = SEARCHAPI_API_KEY
app.state.config.SEARCHAPI_ENGINE = SEARCHAPI_ENGINE
app.state.config.SERPAPI_API_KEY = SERPAPI_API_KEY
app.state.config.SERPAPI_ENGINE = SERPAPI_ENGINE
app.state.config.JINA_API_KEY = JINA_API_KEY
app.state.config.JINA_API_BASE_URL = JINA_API_BASE_URL
app.state.config.BING_SEARCH_V7_ENDPOINT = BING_SEARCH_V7_ENDPOINT
app.state.config.BING_SEARCH_V7_SUBSCRIPTION_KEY = BING_SEARCH_V7_SUBSCRIPTION_KEY
app.state.config.EXA_API_KEY = EXA_API_KEY
app.state.config.PERPLEXITY_API_KEY = PERPLEXITY_API_KEY
app.state.config.PERPLEXITY_MODEL = PERPLEXITY_MODEL
app.state.config.PERPLEXITY_SEARCH_CONTEXT_USAGE = PERPLEXITY_SEARCH_CONTEXT_USAGE
app.state.config.PERPLEXITY_SEARCH_API_URL = PERPLEXITY_SEARCH_API_URL
app.state.config.SOUGOU_API_SID = SOUGOU_API_SID
app.state.config.SOUGOU_API_SK = SOUGOU_API_SK
app.state.config.EXTERNAL_WEB_SEARCH_URL = EXTERNAL_WEB_SEARCH_URL
app.state.config.EXTERNAL_WEB_SEARCH_API_KEY = EXTERNAL_WEB_SEARCH_API_KEY
app.state.config.EXTERNAL_WEB_LOADER_URL = EXTERNAL_WEB_LOADER_URL
app.state.config.EXTERNAL_WEB_LOADER_API_KEY = EXTERNAL_WEB_LOADER_API_KEY
app.state.config.YANDEX_WEB_SEARCH_URL = YANDEX_WEB_SEARCH_URL
app.state.config.YANDEX_WEB_SEARCH_API_KEY = YANDEX_WEB_SEARCH_API_KEY
app.state.config.YANDEX_WEB_SEARCH_CONFIG = YANDEX_WEB_SEARCH_CONFIG
app.state.config.YOUCOM_API_KEY = YOUCOM_API_KEY
app.state.config.LINKUP_API_KEY = LINKUP_API_KEY
app.state.config.LINKUP_SEARCH_PARAMS = LINKUP_SEARCH_PARAMS


app.state.config.PLAYWRIGHT_WS_URL = PLAYWRIGHT_WS_URL
app.state.config.PLAYWRIGHT_TIMEOUT = PLAYWRIGHT_TIMEOUT
app.state.config.FIRECRAWL_API_BASE_URL = FIRECRAWL_API_BASE_URL
app.state.config.FIRECRAWL_API_KEY = FIRECRAWL_API_KEY
app.state.config.FIRECRAWL_TIMEOUT = FIRECRAWL_TIMEOUT
app.state.config.TAVILY_EXTRACT_DEPTH = TAVILY_EXTRACT_DEPTH

app.state.EMBEDDING_FUNCTION = None
app.state.RERANKING_FUNCTION = None
app.state.ef = None
app.state.rf = None

app.state.YOUTUBE_LOADER_TRANSLATION = None


try:
    app.state.ef = get_ef(app.state.config.RAG_EMBEDDING_ENGINE, app.state.config.RAG_EMBEDDING_MODEL)
    if app.state.config.ENABLE_RAG_HYBRID_SEARCH and not app.state.config.BYPASS_EMBEDDING_AND_RETRIEVAL:
        app.state.rf = get_rf(
            app.state.config.RAG_RERANKING_ENGINE,
            app.state.config.RAG_RERANKING_MODEL,
            app.state.config.RAG_EXTERNAL_RERANKER_URL,
            app.state.config.RAG_EXTERNAL_RERANKER_API_KEY,
            app.state.config.RAG_EXTERNAL_RERANKER_TIMEOUT,
        )
    else:
        app.state.rf = None
except Exception as e:
    log.error(f'Error updating models: {e}')
    pass


app.state.EMBEDDING_FUNCTION = get_embedding_function(
    app.state.config.RAG_EMBEDDING_ENGINE,
    app.state.config.RAG_EMBEDDING_MODEL,
    embedding_function=app.state.ef,
    url=(
        app.state.config.RAG_OPENAI_API_BASE_URL
        if app.state.config.RAG_EMBEDDING_ENGINE == 'openai'
        else (
            app.state.config.RAG_OLLAMA_BASE_URL
            if app.state.config.RAG_EMBEDDING_ENGINE == 'ollama'
            else app.state.config.RAG_AZURE_OPENAI_BASE_URL
        )
    ),
    key=(
        app.state.config.RAG_OPENAI_API_KEY
        if app.state.config.RAG_EMBEDDING_ENGINE == 'openai'
        else (
            app.state.config.RAG_OLLAMA_API_KEY
            if app.state.config.RAG_EMBEDDING_ENGINE == 'ollama'
            else app.state.config.RAG_AZURE_OPENAI_API_KEY
        )
    ),
    embedding_batch_size=app.state.config.RAG_EMBEDDING_BATCH_SIZE,
    azure_api_version=(
        app.state.config.RAG_AZURE_OPENAI_API_VERSION
        if app.state.config.RAG_EMBEDDING_ENGINE == 'azure_openai'
        else None
    ),
    enable_async=app.state.config.ENABLE_ASYNC_EMBEDDING,
    concurrent_requests=app.state.config.RAG_EMBEDDING_CONCURRENT_REQUESTS,
)

app.state.RERANKING_FUNCTION = get_reranking_function(
    app.state.config.RAG_RERANKING_ENGINE,
    app.state.config.RAG_RERANKING_MODEL,
    reranking_function=app.state.rf,
    reranking_batch_size=app.state.config.RAG_RERANKING_BATCH_SIZE,
)

########################################
#
# CODE EXECUTION
#
########################################

app.state.config.ENABLE_CODE_EXECUTION = ENABLE_CODE_EXECUTION
app.state.config.CODE_EXECUTION_ENGINE = CODE_EXECUTION_ENGINE
app.state.config.CODE_EXECUTION_JUPYTER_URL = CODE_EXECUTION_JUPYTER_URL
app.state.config.CODE_EXECUTION_JUPYTER_AUTH = CODE_EXECUTION_JUPYTER_AUTH
app.state.config.CODE_EXECUTION_JUPYTER_AUTH_TOKEN = CODE_EXECUTION_JUPYTER_AUTH_TOKEN
app.state.config.CODE_EXECUTION_JUPYTER_AUTH_PASSWORD = CODE_EXECUTION_JUPYTER_AUTH_PASSWORD
app.state.config.CODE_EXECUTION_JUPYTER_TIMEOUT = CODE_EXECUTION_JUPYTER_TIMEOUT

app.state.config.ENABLE_CODE_INTERPRETER = ENABLE_CODE_INTERPRETER
app.state.config.CODE_INTERPRETER_ENGINE = CODE_INTERPRETER_ENGINE
app.state.config.CODE_INTERPRETER_PROMPT_TEMPLATE = CODE_INTERPRETER_PROMPT_TEMPLATE

app.state.config.CODE_INTERPRETER_JUPYTER_URL = CODE_INTERPRETER_JUPYTER_URL
app.state.config.CODE_INTERPRETER_JUPYTER_AUTH = CODE_INTERPRETER_JUPYTER_AUTH
app.state.config.CODE_INTERPRETER_JUPYTER_AUTH_TOKEN = CODE_INTERPRETER_JUPYTER_AUTH_TOKEN
app.state.config.CODE_INTERPRETER_JUPYTER_AUTH_PASSWORD = CODE_INTERPRETER_JUPYTER_AUTH_PASSWORD
app.state.config.CODE_INTERPRETER_JUPYTER_TIMEOUT = CODE_INTERPRETER_JUPYTER_TIMEOUT

########################################
#
# IMAGES
#
########################################

app.state.config.IMAGE_GENERATION_ENGINE = IMAGE_GENERATION_ENGINE
app.state.config.ENABLE_IMAGE_GENERATION = ENABLE_IMAGE_GENERATION
app.state.config.ENABLE_IMAGE_PROMPT_GENERATION = ENABLE_IMAGE_PROMPT_GENERATION
app.state.config.ENABLE_MEMORIES = ENABLE_MEMORIES

app.state.config.IMAGE_GENERATION_MODEL = IMAGE_GENERATION_MODEL
app.state.config.IMAGE_SIZE = IMAGE_SIZE
app.state.config.IMAGE_STEPS = IMAGE_STEPS

app.state.config.IMAGES_OPENAI_API_BASE_URL = IMAGES_OPENAI_API_BASE_URL
app.state.config.IMAGES_OPENAI_API_VERSION = IMAGES_OPENAI_API_VERSION
app.state.config.IMAGES_OPENAI_API_KEY = IMAGES_OPENAI_API_KEY
app.state.config.IMAGES_OPENAI_API_PARAMS = IMAGES_OPENAI_API_PARAMS

app.state.config.IMAGES_GEMINI_API_BASE_URL = IMAGES_GEMINI_API_BASE_URL
app.state.config.IMAGES_GEMINI_API_KEY = IMAGES_GEMINI_API_KEY
app.state.config.IMAGES_GEMINI_ENDPOINT_METHOD = IMAGES_GEMINI_ENDPOINT_METHOD

app.state.config.AUTOMATIC1111_BASE_URL = AUTOMATIC1111_BASE_URL
app.state.config.AUTOMATIC1111_API_AUTH = AUTOMATIC1111_API_AUTH
app.state.config.AUTOMATIC1111_PARAMS = AUTOMATIC1111_PARAMS

app.state.config.COMFYUI_BASE_URL = COMFYUI_BASE_URL
app.state.config.COMFYUI_API_KEY = COMFYUI_API_KEY
app.state.config.COMFYUI_WORKFLOW = COMFYUI_WORKFLOW
app.state.config.COMFYUI_WORKFLOW_NODES = COMFYUI_WORKFLOW_NODES


app.state.config.ENABLE_IMAGE_EDIT = ENABLE_IMAGE_EDIT
app.state.config.IMAGE_EDIT_ENGINE = IMAGE_EDIT_ENGINE
app.state.config.IMAGE_EDIT_MODEL = IMAGE_EDIT_MODEL
app.state.config.IMAGE_EDIT_SIZE = IMAGE_EDIT_SIZE
app.state.config.IMAGES_EDIT_OPENAI_API_BASE_URL = IMAGES_EDIT_OPENAI_API_BASE_URL
app.state.config.IMAGES_EDIT_OPENAI_API_KEY = IMAGES_EDIT_OPENAI_API_KEY
app.state.config.IMAGES_EDIT_OPENAI_API_VERSION = IMAGES_EDIT_OPENAI_API_VERSION
app.state.config.IMAGES_EDIT_GEMINI_API_BASE_URL = IMAGES_EDIT_GEMINI_API_BASE_URL
app.state.config.IMAGES_EDIT_GEMINI_API_KEY = IMAGES_EDIT_GEMINI_API_KEY
app.state.config.IMAGES_EDIT_COMFYUI_BASE_URL = IMAGES_EDIT_COMFYUI_BASE_URL
app.state.config.IMAGES_EDIT_COMFYUI_API_KEY = IMAGES_EDIT_COMFYUI_API_KEY
app.state.config.IMAGES_EDIT_COMFYUI_WORKFLOW = IMAGES_EDIT_COMFYUI_WORKFLOW
app.state.config.IMAGES_EDIT_COMFYUI_WORKFLOW_NODES = IMAGES_EDIT_COMFYUI_WORKFLOW_NODES


########################################
#
# AUDIO
#
########################################

app.state.config.STT_ENGINE = AUDIO_STT_ENGINE
app.state.config.STT_MODEL = AUDIO_STT_MODEL
app.state.config.STT_SUPPORTED_CONTENT_TYPES = AUDIO_STT_SUPPORTED_CONTENT_TYPES
app.state.config.STT_ALLOWED_EXTENSIONS = AUDIO_STT_ALLOWED_EXTENSIONS

app.state.config.STT_OPENAI_API_BASE_URL = AUDIO_STT_OPENAI_API_BASE_URL
app.state.config.STT_OPENAI_API_KEY = AUDIO_STT_OPENAI_API_KEY

app.state.config.WHISPER_MODEL = WHISPER_MODEL
app.state.config.DEEPGRAM_API_KEY = DEEPGRAM_API_KEY

app.state.config.AUDIO_STT_AZURE_API_KEY = AUDIO_STT_AZURE_API_KEY
app.state.config.AUDIO_STT_AZURE_REGION = AUDIO_STT_AZURE_REGION
app.state.config.AUDIO_STT_AZURE_LOCALES = AUDIO_STT_AZURE_LOCALES
app.state.config.AUDIO_STT_AZURE_BASE_URL = AUDIO_STT_AZURE_BASE_URL
app.state.config.AUDIO_STT_AZURE_MAX_SPEAKERS = AUDIO_STT_AZURE_MAX_SPEAKERS

app.state.config.AUDIO_STT_MISTRAL_API_KEY = AUDIO_STT_MISTRAL_API_KEY
app.state.config.AUDIO_STT_MISTRAL_API_BASE_URL = AUDIO_STT_MISTRAL_API_BASE_URL
app.state.config.AUDIO_STT_MISTRAL_USE_CHAT_COMPLETIONS = AUDIO_STT_MISTRAL_USE_CHAT_COMPLETIONS

app.state.config.TTS_ENGINE = AUDIO_TTS_ENGINE

app.state.config.TTS_MODEL = AUDIO_TTS_MODEL
app.state.config.TTS_VOICE = AUDIO_TTS_VOICE

app.state.config.TTS_OPENAI_API_BASE_URL = AUDIO_TTS_OPENAI_API_BASE_URL
app.state.config.TTS_OPENAI_API_KEY = AUDIO_TTS_OPENAI_API_KEY
app.state.config.TTS_OPENAI_PARAMS = AUDIO_TTS_OPENAI_PARAMS

app.state.config.TTS_API_KEY = AUDIO_TTS_API_KEY
app.state.config.TTS_SPLIT_ON = AUDIO_TTS_SPLIT_ON


app.state.config.TTS_AZURE_SPEECH_REGION = AUDIO_TTS_AZURE_SPEECH_REGION
app.state.config.TTS_AZURE_SPEECH_BASE_URL = AUDIO_TTS_AZURE_SPEECH_BASE_URL
app.state.config.TTS_AZURE_SPEECH_OUTPUT_FORMAT = AUDIO_TTS_AZURE_SPEECH_OUTPUT_FORMAT

app.state.config.TTS_MISTRAL_API_KEY = AUDIO_TTS_MISTRAL_API_KEY
app.state.config.TTS_MISTRAL_API_BASE_URL = AUDIO_TTS_MISTRAL_API_BASE_URL


app.state.faster_whisper_model = None
app.state.speech_synthesiser = None
app.state.speech_speaker_embeddings_dataset = None


########################################
#
# TASKS
#
########################################


app.state.config.TASK_MODEL = TASK_MODEL
app.state.config.TASK_MODEL_EXTERNAL = TASK_MODEL_EXTERNAL


app.state.config.ENABLE_SEARCH_QUERY_GENERATION = ENABLE_SEARCH_QUERY_GENERATION
app.state.config.ENABLE_RETRIEVAL_QUERY_GENERATION = ENABLE_RETRIEVAL_QUERY_GENERATION
app.state.config.ENABLE_AUTOCOMPLETE_GENERATION = ENABLE_AUTOCOMPLETE_GENERATION
app.state.config.ENABLE_TAGS_GENERATION = ENABLE_TAGS_GENERATION
app.state.config.ENABLE_TITLE_GENERATION = ENABLE_TITLE_GENERATION
app.state.config.ENABLE_FOLLOW_UP_GENERATION = ENABLE_FOLLOW_UP_GENERATION


app.state.config.TITLE_GENERATION_PROMPT_TEMPLATE = TITLE_GENERATION_PROMPT_TEMPLATE
app.state.config.TAGS_GENERATION_PROMPT_TEMPLATE = TAGS_GENERATION_PROMPT_TEMPLATE
app.state.config.IMAGE_PROMPT_GENERATION_PROMPT_TEMPLATE = IMAGE_PROMPT_GENERATION_PROMPT_TEMPLATE
app.state.config.FOLLOW_UP_GENERATION_PROMPT_TEMPLATE = FOLLOW_UP_GENERATION_PROMPT_TEMPLATE

app.state.config.TOOLS_FUNCTION_CALLING_PROMPT_TEMPLATE = TOOLS_FUNCTION_CALLING_PROMPT_TEMPLATE
app.state.config.QUERY_GENERATION_PROMPT_TEMPLATE = QUERY_GENERATION_PROMPT_TEMPLATE
app.state.config.AUTOCOMPLETE_GENERATION_PROMPT_TEMPLATE = AUTOCOMPLETE_GENERATION_PROMPT_TEMPLATE
app.state.config.AUTOCOMPLETE_GENERATION_INPUT_MAX_LENGTH = AUTOCOMPLETE_GENERATION_INPUT_MAX_LENGTH
app.state.config.VOICE_MODE_PROMPT_TEMPLATE = VOICE_MODE_PROMPT_TEMPLATE
app.state.config.ENABLE_VOICE_MODE_PROMPT = ENABLE_VOICE_MODE_PROMPT


########################################
#
# WEBUI
#
########################################

app.state.MODELS = MODELS

# Add the middleware to the app
if ENABLE_COMPRESSION_MIDDLEWARE:
    app.add_middleware(CompressMiddleware)


# All HTTP middlewares below are pure-ASGI implementations. The previous
# `BaseHTTPMiddleware` / `@app.middleware('http')` versions wrapped the
# downstream app in an anyio task group whose cancel scope cancelled
# in-flight DB calls (and any other awaits) on client disconnect /
# response completion — which surfaced as noisy SQLAlchemy
# `terminate_force_close` tracebacks under aiosqlite and as random
# CancelledError storms across the request path. See
# `open_webui.utils.asgi_middleware` for the rationale.
app.add_middleware(RedirectMiddleware)
app.add_middleware(SecurityHeadersMiddleware)
app.add_middleware(CommitSessionMiddleware)
app.add_middleware(AuthTokenMiddleware, fastapi_app=app)
app.add_middleware(WebsocketUpgradeGuardMiddleware)


app.add_middleware(
    CORSMiddleware,
    allow_origins=CORS_ALLOW_ORIGIN,
    allow_credentials=True,
    allow_methods=['*'],
    allow_headers=['*'],
)


app.mount('/ws', socket_app)


app.include_router(ollama.router, prefix='/ollama', tags=['ollama'])
app.include_router(openai.router, prefix='/openai', tags=['openai'])


app.include_router(pipelines.router, prefix='/api/v1/pipelines', tags=['pipelines'])
app.include_router(tasks.router, prefix='/api/v1/tasks', tags=['tasks'])
app.include_router(images.router, prefix='/api/v1/images', tags=['images'])

app.include_router(audio.router, prefix='/api/v1/audio', tags=['audio'])
app.include_router(retrieval.router, prefix='/api/v1/retrieval', tags=['retrieval'])

app.include_router(configs.router, prefix='/api/v1/configs', tags=['configs'])

app.include_router(auths.router, prefix='/api/v1/auths', tags=['auths'])
app.include_router(users.router, prefix='/api/v1/users', tags=['users'])


app.include_router(channels.router, prefix='/api/v1/channels', tags=['channels'])
app.include_router(chats.router, prefix='/api/v1/chats', tags=['chats'])
app.include_router(notes.router, prefix='/api/v1/notes', tags=['notes'])


app.include_router(models.router, prefix='/api/v1/models', tags=['models'])
app.include_router(knowledge.router, prefix='/api/v1/knowledge', tags=['knowledge'])
app.include_router(prompts.router, prefix='/api/v1/prompts', tags=['prompts'])
app.include_router(tools.router, prefix='/api/v1/tools', tags=['tools'])
app.include_router(skills.router, prefix='/api/v1/skills', tags=['skills'])

app.include_router(memories.router, prefix='/api/v1/memories', tags=['memories'])
app.include_router(folders.router, prefix='/api/v1/folders', tags=['folders'])
app.include_router(groups.router, prefix='/api/v1/groups', tags=['groups'])
app.include_router(files.router, prefix='/api/v1/files', tags=['files'])
app.include_router(functions.router, prefix='/api/v1/functions', tags=['functions'])
app.include_router(evaluations.router, prefix='/api/v1/evaluations', tags=['evaluations'])
if ENABLE_ADMIN_ANALYTICS:
    app.include_router(analytics.router, prefix='/api/v1/analytics', tags=['analytics'])
app.include_router(utils.router, prefix='/api/v1/utils', tags=['utils'])
app.include_router(terminals.router, prefix='/api/v1/terminals', tags=['terminals'])
app.include_router(automations.router, prefix='/api/v1/automations', tags=['automations'])
app.include_router(calendar.router, prefix='/api/v1/calendars', tags=['calendars'])

# SCIM 2.0 API for identity management
if ENABLE_SCIM:
    app.include_router(scim.router, prefix='/api/v1/scim/v2', tags=['scim'])


try:
    audit_level = AuditLevel(AUDIT_LOG_LEVEL)
except ValueError as e:
    logger.error(f'Invalid audit level: {AUDIT_LOG_LEVEL}. Error: {e}')
    audit_level = AuditLevel.NONE

if audit_level != AuditLevel.NONE:
    app.add_middleware(
        AuditLoggingMiddleware,
        audit_level=audit_level,
        excluded_paths=AUDIT_EXCLUDED_PATHS,
        included_paths=AUDIT_INCLUDED_PATHS,
        audit_get_requests=ENABLE_AUDIT_GET_REQUESTS,
        max_body_size=MAX_BODY_LOG_SIZE,
    )
##################################
#
# Chat Endpoints
#
##################################


@app.get('/api/models')
@app.get('/api/v1/models')  # Experimental: Compatibility with OpenAI API
async def get_models(request: Request, refresh: bool = False, user=Depends(get_verified_user)):
    all_models = await get_all_models(request, refresh=refresh, user=user)

    models = []
    for model in all_models:
        # Filter out filter pipelines
        if 'pipeline' in model and model['pipeline'].get('type', None) == 'filter':
            continue

        # Remove profile image URL to reduce payload size
        if model.get('info', {}).get('meta', {}).get('profile_image_url'):
            model['info']['meta'].pop('profile_image_url', None)

        try:
            model_tags = [tag.get('name') for tag in model.get('info', {}).get('meta', {}).get('tags', [])]
            tags = [tag.get('name') for tag in model.get('tags', [])]

            tags = list(set(model_tags + tags))
            model['tags'] = [{'name': tag} for tag in tags]
        except Exception as e:
            log.debug(f'Error processing model tags: {e}')
            model['tags'] = []
            pass

        models.append(model)

    model_order_list = request.app.state.config.MODEL_ORDER_LIST
    if model_order_list:
        model_order_dict = {model_id: i for i, model_id in enumerate(model_order_list)}
        # Sort models by order list priority, with fallback for those not in the list
        models.sort(
            key=lambda model: (
                model_order_dict.get(model.get('id', ''), float('inf')),
                (model.get('name', '') or ''),
            )
        )

    models = await get_filtered_models(models, user)

    log.debug(
        f'/api/models returned filtered models accessible to the user: {json.dumps([model.get("id") for model in models])}'
    )
    return {'data': models}


@app.get('/api/models/base')
async def get_base_models(request: Request, user=Depends(get_admin_user)):
    models = await get_all_base_models(request, user=user)
    return {'data': models}


class ModelUnloadForm(BaseModel):
    model: str


@app.post('/api/models/unload')
async def unload_model(request: Request, form_data: ModelUnloadForm, user=Depends(get_admin_user)):
    """
    Unified model unload endpoint.
    Resolves the provider that owns the model and calls its native unload mechanism.
    Supports: Ollama (keep_alive=0) and llama.cpp (/models/unload).
    """
    model_id = form_data.model

    # --- Ollama provider ---
    ollama_models = getattr(request.app.state, 'OLLAMA_MODELS', None) or {}
    if model_id in ollama_models:
        url_indices = ollama_models[model_id].get('urls', [])
        errors = []
        for idx in url_indices:
            url = request.app.state.config.OLLAMA_BASE_URLS[idx]
            api_config = request.app.state.config.OLLAMA_API_CONFIGS.get(
                str(idx),
                request.app.state.config.OLLAMA_API_CONFIGS.get(url, {}),
            )
            key = api_config.get('key', None)

            prefix_id = api_config.get('prefix_id', None)
            actual_model = model_id
            if prefix_id and actual_model.startswith(f'{prefix_id}.'):
                actual_model = actual_model[len(f'{prefix_id}.') :]

            payload = json.dumps({'model': actual_model, 'keep_alive': 0, 'prompt': ''})

            try:
                timeout = aiohttp.ClientTimeout(total=30)
                async with aiohttp.ClientSession(timeout=timeout, trust_env=True) as session:
                    headers = {
                        'Content-Type': 'application/json',
                        **({'Authorization': f'Bearer {key}'} if key else {}),
                    }
                    async with session.post(
                        f'{url}/api/generate',
                        data=payload,
                        headers=headers,
                    ) as r:
                        if not r.ok:
                            errors.append({'url_idx': idx, 'error': await r.text()})
            except Exception as e:
                log.exception(f'Failed to unload model on Ollama node {idx}: {e}')
                errors.append({'url_idx': idx, 'error': str(e)})

        if errors:
            raise HTTPException(
                status_code=500,
                detail=f'Failed to unload model on {len(errors)} node(s): {errors}',
            )
        return {'status': True}

    # --- OpenAI-compatible providers ---
    openai_models = getattr(request.app.state, 'OPENAI_MODELS', None) or {}
    if model_id in openai_models:
        model_info = openai_models[model_id]
        idx = model_info.get('urlIdx')
        api_config = request.app.state.config.OPENAI_API_CONFIGS.get(str(idx), {})
        provider = api_config.get('provider', '')
        base_url = request.app.state.config.OPENAI_API_BASE_URLS[idx]
        key = (
            request.app.state.config.OPENAI_API_KEYS[idx] if idx < len(request.app.state.config.OPENAI_API_KEYS) else ''
        )

        if provider == 'llama.cpp':
            root_url = base_url.rstrip('/').removesuffix('/v1')
            try:
                timeout = aiohttp.ClientTimeout(total=30)
                async with aiohttp.ClientSession(timeout=timeout, trust_env=True) as session:
                    headers = {
                        'Content-Type': 'application/json',
                        **({'Authorization': f'Bearer {key}'} if key else {}),
                    }
                    async with session.post(
                        f'{root_url}/models/unload',
                        json={'model': model_id},
                        headers=headers,
                    ) as r:
                        if not r.ok:
                            detail = await r.text()
                            raise HTTPException(status_code=r.status, detail=detail)
                        return await r.json()
            except HTTPException:
                raise
            except Exception as e:
                log.exception(f'Failed to unload model via llama.cpp: {e}')
                raise HTTPException(status_code=500, detail=str(e))
        else:
            raise HTTPException(
                status_code=400,
                detail=f'Provider "{provider or "default"}" does not support model unloading',
            )

    raise HTTPException(status_code=404, detail=f'Model "{model_id}" not found')


##################################
# Embeddings
##################################


@app.post('/api/embeddings')
@app.post('/api/v1/embeddings')  # Experimental: Compatibility with OpenAI API
async def embeddings(request: Request, form_data: dict, user=Depends(get_verified_user)):
    """
    OpenAI-compatible embeddings endpoint.

    This handler:
      - Performs user/model checks and dispatches to the correct backend.
      - Supports OpenAI, Ollama, arena models, pipelines, and any compatible provider.

    Args:
        request (Request): Request context.
        form_data (dict): OpenAI-like payload (e.g., {"model": "...", "input": [...]})
        user (UserModel): Authenticated user.

    Returns:
        dict: OpenAI-compatible embeddings response.
    """
    # Make sure models are loaded in app state
    if not request.app.state.MODELS:
        await get_all_models(request, user=user)
    # Use generic dispatcher in utils.embeddings
    return await generate_embeddings(request, form_data, user)


@app.post('/api/chat/completions')
@app.post('/api/v1/chat/completions')  # Experimental: Compatibility with OpenAI API
async def chat_completion(
    request: Request,
    form_data: dict,
    user=Depends(get_verified_user),
):
    if not request.app.state.MODELS:
        await get_all_models(request, user=user)

    model_id = form_data.get('model', None)
    model_item = form_data.pop('model_item', {})
    tasks = form_data.pop('background_tasks', None)

    metadata = {}
    try:
        model_info = None
        if not model_item.get('direct', False):
            if model_id not in request.app.state.MODELS:
                raise Exception('Model not found')

            model = request.app.state.MODELS[model_id]
            model_info = await Models.get_model_by_id(model_id)

            # Check if user has access to the model
            if not BYPASS_MODEL_ACCESS_CONTROL and (user.role != 'admin' or not BYPASS_ADMIN_ACCESS_CONTROL):
                try:
                    await check_model_access(user, model)
                except Exception as e:
                    raise e
        else:
            model = model_item

            request.state.direct = True
            request.state.model = model

        # Model params: global defaults as base, per-model overrides win
        default_model_params = getattr(request.app.state.config, 'DEFAULT_MODEL_PARAMS', None) or {}
        model_info_params = {
            **default_model_params,
            **(model_info.params.model_dump() if model_info and model_info.params else {}),
        }

        # Check base model existence for custom models
        if model_info and model_info.base_model_id:
            base_model_id = model_info.base_model_id
            if base_model_id not in request.app.state.MODELS:
                if ENABLE_CUSTOM_MODEL_FALLBACK:
                    default_models = (request.app.state.config.DEFAULT_MODELS or '').split(',')

                    fallback_model_id = default_models[0].strip() if default_models[0] else None

                    if fallback_model_id and fallback_model_id in request.app.state.MODELS:
                        # Update model and form_data so routing uses the fallback model's type
                        model = request.app.state.MODELS[fallback_model_id]
                        form_data['model'] = fallback_model_id
                    else:
                        raise Exception('Model not found')
                else:
                    raise Exception('Model not found')

        # Chat Params
        stream_delta_chunk_size = form_data.get('params', {}).get('stream_delta_chunk_size')
        reasoning_tags = form_data.get('params', {}).get('reasoning_tags')

        # Model Params
        if model_info_params.get('stream_response') is not None:
            form_data['stream'] = model_info_params.get('stream_response')

        if model_info_params.get('stream_delta_chunk_size'):
            stream_delta_chunk_size = model_info_params.get('stream_delta_chunk_size')

        if model_info_params.get('reasoning_tags') is not None:
            reasoning_tags = model_info_params.get('reasoning_tags')

        # parent_id signals intent:
        #   null   → new chat (root message, no parent)
        #   value  → follow-up (user message's parentId = prev assistant)
        #   absent → legacy caller, no chat management
        is_new_chat = 'parent_id' in form_data and form_data['parent_id'] is None and not form_data.get('chat_id')
        parent_id = form_data.pop('parent_id', None)
        form_data.pop('new_chat', None)  # Legacy field

        # Multi-model: {model_id: assistant_message_id}
        # Single-model fallback: built from 'model' + 'id'
        message_ids = form_data.pop('message_ids', None)
        if not message_ids:
            message_ids = {model_id: form_data.pop('id', None)}
        else:
            form_data.pop('id', None)

        user_message = form_data.pop('user_message', None) or form_data.pop('parent_message', None)

        # Drop tool_servers if caller lacks features.direct_tool_servers —
        # mirrors the storage-side strip in user/settings/update.
        tool_servers = form_data.pop('tool_servers', None)
        if (
            tool_servers
            and user.role != 'admin'
            and not await has_permission(
                user.id,
                'features.direct_tool_servers',
                request.app.state.config.USER_PERMISSIONS,
            )
        ):
            tool_servers = None

        metadata = {
            'user_id': user.id,
            'chat_id': form_data.pop('chat_id', None) or '',
            'user_message': user_message,
            'user_message_id': user_message.get('id') if user_message else None,
            'assistant_message_id': form_data.pop('assistant_message_id', None),
            'session_id': form_data.pop('session_id', None),
            'folder_id': form_data.pop('folder_id', None),
            'filter_ids': form_data.pop('filter_ids', []),
            'tool_ids': form_data.get('tool_ids', None),
            'tool_servers': tool_servers,
            'files': form_data.get('files', None),
            'features': form_data.get('features', {}),
            'variables': form_data.get('variables', {}),
            'model': model,
            'direct': model_item.get('direct', False),
            'params': {
                'stream_delta_chunk_size': stream_delta_chunk_size,
                'reasoning_tags': reasoning_tags,
                'function_calling': (
                    'native'
                    if (
                        form_data.get('params', {}).get('function_calling') == 'native'
                        or model_info_params.get('function_calling') == 'native'
                    )
                    else 'default'
                ),
            },
        }

        if is_new_chat:
            metadata['chat_id'] = str(uuid4())

        if metadata.get('chat_id') and user:
            chat_id = metadata['chat_id']
            if not chat_id.startswith('local:') and not chat_id.startswith(
                'channel:'
            ):  # temporary/channel chats are not stored
                if is_new_chat:
                    # Build the full history upfront with ALL assistant placeholders
                    user_message = metadata.get('user_message') or {}
                    user_message_id = user_message.get('id') if user_message else None

                    history_messages = {}
                    all_assistant_ids = [assistant_id for assistant_id in message_ids.values() if assistant_id]

                    if user_message_id and user_message:
                        user_message['childrenIds'] = all_assistant_ids
                        history_messages[user_message_id] = user_message

                    for target_model_id, assistant_message_id in message_ids.items():
                        if assistant_message_id:
                            history_messages[assistant_message_id] = {
                                'id': assistant_message_id,
                                'parentId': user_message_id,
                                'childrenIds': [],
                                'role': 'assistant',
                                'content': '',
                                'done': False,
                                'model': target_model_id,
                                'timestamp': int(time.time()),
                            }

                    await Chats.insert_new_chat(
                        chat_id,
                        user.id,
                        ChatForm(
                            chat={
                                'id': chat_id,
                                'title': 'New Chat',
                                'models': list(message_ids.keys()),
                                'history': {
                                    'currentId': all_assistant_ids[0] if all_assistant_ids else user_message_id,
                                    'messages': history_messages,
                                },
                                'messages': [
                                    {'role': 'user', 'content': user_message.get('content', '')},
                                ]
                                if user_message_id
                                else [],
                                'files': metadata.get('files') or [],
                                'tags': [],
                                'timestamp': int(time.time() * 1000),
                            },
                            folder_id=metadata.get('folder_id'),
                        ),
                    )

                    # Insert chat files from user message if any
                    user_message_files = user_message.get('files', [])
                    if user_message_files:
                        try:
                            await Chats.insert_chat_files(
                                chat_id,
                                user_message_id,
                                [
                                    file_item.get('id')
                                    for file_item in user_message_files
                                    if file_item.get('type') == 'file'
                                ],
                                user.id,
                            )
                        except Exception as e:
                            log.debug(f'Error inserting chat files: {e}')
                            pass
                else:
                    # Existing chat — verify ownership
                    if not await Chats.is_chat_owner(chat_id, user.id) and user.role != 'admin':
                        raise HTTPException(
                            status_code=status.HTTP_404_NOT_FOUND,
                            detail=ERROR_MESSAGES.DEFAULT(),
                        )

                    # Persist chat-level files (knowledge collections, docs, etc.)
                    # The old frontend saveChatHandler did this on every message;
                    # now the backend owns persistence.
                    chat_files = metadata.get('files')
                    if chat_files is not None:
                        existing_chat = await Chats.get_chat_by_id(chat_id)
                        if existing_chat:
                            updated = {**existing_chat.chat, 'files': chat_files}
                            await Chats.update_chat_by_id(chat_id, updated)

                    # Save user message to DB
                    user_message = metadata.get('user_message') or {}
                    if user_message and user_message.get('id'):
                        await Chats.upsert_message_to_chat_by_id_and_message_id(
                            chat_id,
                            user_message['id'],
                            user_message,
                        )

                        # Link grandparent → user message (childrenIds)
                        grandparent_id = user_message.get('parentId')
                        if grandparent_id:
                            grandparent = await Chats.get_message_by_id_and_message_id(chat_id, grandparent_id)
                            if grandparent:
                                child_ids = grandparent.get('childrenIds', [])
                                if user_message['id'] not in child_ids:
                                    child_ids.append(user_message['id'])
                                    await Chats.upsert_message_to_chat_by_id_and_message_id(
                                        chat_id, grandparent_id, {'childrenIds': child_ids}
                                    )

                    # Insert chat files from user message if any
                    user_message_files = user_message.get('files', [])
                    if user_message_files:
                        try:
                            await Chats.insert_chat_files(
                                chat_id,
                                user_message.get('id'),
                                [
                                    file_item.get('id')
                                    for file_item in user_message_files
                                    if file_item.get('type') == 'file'
                                ],
                                user.id,
                            )
                        except Exception as e:
                            log.debug(f'Error inserting chat files: {e}')
                            pass

                    # Save ALL assistant placeholders
                    user_message_id = metadata.get('user_message_id')
                    all_assistant_ids = [assistant_id for assistant_id in message_ids.values() if assistant_id]

                    # Link user message → all assistant messages (childrenIds)
                    if user_message_id and all_assistant_ids:
                        existing_user_message = await Chats.get_message_by_id_and_message_id(chat_id, user_message_id)
                        if existing_user_message:
                            child_ids = existing_user_message.get('childrenIds', [])
                            for assistant_id in all_assistant_ids:
                                if assistant_id not in child_ids:
                                    child_ids.append(assistant_id)
                            await Chats.upsert_message_to_chat_by_id_and_message_id(
                                chat_id,
                                user_message_id,
                                {'childrenIds': child_ids},
                            )

                    # Save each assistant placeholder
                    for target_model_id, assistant_message_id in message_ids.items():
                        if assistant_message_id:
                            await Chats.upsert_message_to_chat_by_id_and_message_id(
                                chat_id,
                                assistant_message_id,
                                {
                                    'id': assistant_message_id,
                                    'parentId': user_message_id,
                                    'childrenIds': [],
                                    'role': 'assistant',
                                    'content': '',
                                    'done': False,
                                    'model': target_model_id,
                                    'timestamp': int(time.time()),
                                },
                            )

        request.state.metadata = metadata
        form_data['metadata'] = metadata

    except HTTPException:
        raise
    except Exception as e:
        log.warning(f'Error processing chat metadata: {e}')
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=str(e),
        )

    async def process_chat(request, form_data, user, metadata, model, tasks=None):
        try:
            form_data, metadata, events = await process_chat_payload(request, form_data, user, metadata, model)

            response = await chat_completion_handler(request, form_data, user)

            # When the upstream provider returns an error (e.g. HTTP 400
            # content-filter, quota exceeded), generate_chat_completion
            # returns a JSONResponse instead of raising.  Detect this and
            # raise so the except-block below emits chat:message:error +
            # chat:tasks:cancel, unblocking the frontend.
            if isinstance(response, JSONResponse) and response.status_code >= 400:
                try:
                    error_body = json.loads(response.body.decode('utf-8', 'replace'))
                    detail = error_body.get('error', error_body) if isinstance(error_body, dict) else error_body
                    if isinstance(detail, dict):
                        detail = detail.get('message', detail.get('detail', str(detail)))
                except Exception:
                    detail = f'Provider returned HTTP {response.status_code}'
                raise Exception(detail)

            ctx = await build_chat_response_context(request, form_data, user, model, metadata, tasks, events)

            return await process_chat_response(response, ctx)
        except asyncio.CancelledError:
            log.info('Chat processing was cancelled')
            try:

                async def emit_cancel_event():
                    event_emitter = await get_event_emitter(metadata)
                    if event_emitter:
                        await event_emitter({'type': 'chat:tasks:cancel'})

                await asyncio.shield(emit_cancel_event())
            except Exception:
                pass
            raise  # re-raise to ensure proper task cancellation handling
        except Exception as e:
            error_detail = e.detail if isinstance(e, HTTPException) else str(e)
            log.error('Error processing chat payload: %s', error_detail)
            if metadata.get('chat_id') and metadata.get('message_id'):
                # Update the chat message with the error
                try:
                    if not metadata.get('chat_id', '').startswith('local:') and not metadata.get('chat_id', '').startswith('channel:'):
                        await Chats.upsert_message_to_chat_by_id_and_message_id(
                            metadata['chat_id'],
                            metadata['message_id'],
                            {
                                'parentId': metadata.get('user_message_id', None),
                                'error': {'content': error_detail},
                            },
                        )

                    event_emitter = await get_event_emitter(metadata)
                    if event_emitter:
                        await event_emitter(
                            {
                                'type': 'chat:message:error',
                                'data': {'error': {'content': error_detail}},
                            }
                        )
                        await event_emitter(
                            {'type': 'chat:tasks:cancel'},
                        )

                except Exception:
                    pass
            else:
                # No chat_id/message_id → legacy/direct API path with no
                # WebSocket error channel.  We must surface the error as
                # a proper HTTP response; without this the function would
                # return None which FastAPI serializes as null.  #23924
                raise HTTPException(
                    status_code=status.HTTP_400_BAD_REQUEST,
                    detail=error_detail,
                )
        finally:
            # Clean up MCP clients.  Each client is isolated so one
            # failure doesn't skip the rest.
            #
            # NOTE: asyncio.wait_for() / asyncio.shield() must NOT be used
            # here — they create new asyncio Tasks, which violate anyio
            # cancel-scope task-ownership rules when the MCPClient's
            # exit_stack contains anyio transport resources (streamable_http).
            # Exiting those cancel scopes from the wrong task raises
            # "Attempted to exit a cancel scope that isn't the current
            # task's current cancel scope", which propagates as a
            # BaseException through the finally block, discards the response
            # return value, and surfaces as a 500 "No response returned."
            # MCPClient.disconnect() already catches BaseException internally.
            try:
                if mcp_clients := metadata.get('mcp_clients'):
                    for client in reversed(list(mcp_clients.values())):
                        try:
                            await client.disconnect()
                        except BaseException as e:
                            log.debug(f'Error disconnecting MCP client: {e}')
            except BaseException as e:
                log.debug(f'Error cleaning up MCP clients: {e}')

            # Deregister this task, then emit chat:active=false if no others remain
            try:
                chat_id = metadata.get('chat_id')
                task_id = metadata.get('task_id')
                if chat_id and task_id:
                    await cleanup_task(request.app.state.redis, task_id, chat_id)
                    if not await has_active_tasks(request.app.state.redis, chat_id):
                        event_emitter = await get_event_emitter(metadata, update_db=False)
                        if event_emitter:
                            try:
                                await asyncio.shield(event_emitter({'type': 'chat:active', 'data': {'active': False}}))
                            except asyncio.CancelledError:
                                pass
            except Exception:
                pass

    # Fan out: one task per model
    if metadata.get('session_id') and metadata.get('chat_id'):
        task_ids = []
        chat_id = metadata['chat_id']

        for idx, (target_model_id, assistant_message_id) in enumerate(message_ids.items()):
            if not assistant_message_id:
                continue

            # Per-model metadata: own message_id + model
            per_model_metadata = {
                **metadata,
                'message_id': assistant_message_id,
            }

            # Per-model form_data: own model
            model_form_data = {
                **form_data,
                'model': target_model_id,
                'metadata': per_model_metadata,
            }

            # Resolve the model object for this specific model
            resolved_model = request.app.state.MODELS.get(target_model_id, model)

            # Only the first model runs title/tags generation;
            # subsequent models only run follow-ups.
            task_id, _ = await create_task(
                request.app.state.redis,
                process_chat(
                    request,
                    model_form_data,
                    user,
                    per_model_metadata,
                    resolved_model,
                    tasks
                    if idx == 0
                    else {
                        k: v
                        for k, v in (tasks or {}).items()
                        if k not in (TASKS.TITLE_GENERATION, TASKS.TAGS_GENERATION)
                    }
                    or None,
                ),
                id=chat_id,
            )
            per_model_metadata['task_id'] = task_id
            task_ids.append(task_id)

        # Emit chat:active=true
        if task_ids:
            event_emitter = await get_event_emitter(
                {**metadata, 'message_id': list(message_ids.values())[0]},
                update_db=False,
            )
            if event_emitter:
                await event_emitter({'type': 'chat:active', 'data': {'active': True}})

        return {
            'status': True,
            'task_ids': task_ids,
            'chat_id': chat_id,
        }
    else:
        # Legacy/direct: single model, synchronous
        metadata['message_id'] = list(message_ids.values())[0]
        return await process_chat(request, form_data, user, metadata, model, tasks)


# Alias for chat_completion (Legacy)
generate_chat_completions = chat_completion
generate_chat_completion = chat_completion

# Expose as app.state so internal callers (e.g. automations) can
# use the full pipeline without importing from main.py (avoids circular deps).
app.state.CHAT_COMPLETION_HANDLER = chat_completion


##################################
#
# Anthropic Messages API Compatible Endpoint
#
##################################


from open_webui.utils.anthropic import (
    convert_anthropic_to_openai_payload,
    convert_openai_to_anthropic_response,
    openai_stream_to_anthropic_stream,
)


@app.post('/api/message')
@app.post('/api/v1/messages')  # Anthropic Messages API compatible endpoint
async def generate_messages(
    request: Request,
    form_data: dict,
    user=Depends(get_verified_user),
):
    """
    Anthropic Messages API compatible endpoint.

    Accepts the Anthropic Messages API format, converts internally to OpenAI
    Chat Completions format, routes through the existing chat completion
    pipeline, then converts the response back to Anthropic Messages format.

    Supports both streaming and non-streaming requests.
    All models configured in Open WebUI are accessible via this endpoint.

    Authentication: Supports both standard Authorization header and
    Anthropic's x-api-key header (via middleware translation).
    """
    # Convert Anthropic payload to OpenAI format
    requested_model = form_data.get('model', '')

    openai_payload = convert_anthropic_to_openai_payload(form_data)

    # Route through the existing chat_completion handler
    response = await chat_completion(request, openai_payload, user)

    # Convert response back to Anthropic format
    if isinstance(response, StreamingResponse):
        # Streaming response: wrap the generator to convert SSE format
        return StreamingResponse(
            openai_stream_to_anthropic_stream(response.body_iterator, model=requested_model),
            media_type='text/event-stream',
            headers={
                'Cache-Control': 'no-cache',
                'Connection': 'keep-alive',
            },
        )
    elif isinstance(response, dict):
        return convert_openai_to_anthropic_response(response, model=requested_model)
    else:
        # Passthrough for error responses (JSONResponse, PlainTextResponse, etc.)
        return response


@app.post('/api/chat/completed')
async def chat_completed(request: Request, form_data: dict, user=Depends(get_verified_user)):
    """Deprecated: outlet filters now run inline during chat completion.
    Kept for backward compatibility with external integrations."""
    try:
        model_item = form_data.pop('model_item', {})

        if model_item.get('direct', False):
            request.state.direct = True
            request.state.model = model_item

        return await chat_completed_handler(request, form_data, user)
    except Exception as e:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=str(e),
        )


@app.post('/api/chat/actions/{action_id}')
async def chat_action(request: Request, action_id: str, form_data: dict, user=Depends(get_verified_user)):
    try:
        model_item = form_data.pop('model_item', {})

        if model_item.get('direct', False):
            request.state.direct = True
            request.state.model = model_item

        return await chat_action_handler(request, action_id, form_data, user)
    except Exception as e:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=str(e),
        )


@app.post('/api/tasks/stop/{task_id}')
async def stop_task_endpoint(request: Request, task_id: str, user=Depends(get_admin_user)):
    try:
        result = await stop_task(request.app.state.redis, task_id)
        return result
    except ValueError as e:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=str(e))


@app.get('/api/tasks')
async def list_tasks_endpoint(request: Request, user=Depends(get_admin_user)):
    return {'tasks': await list_tasks(request.app.state.redis)}


@app.get('/api/tasks/chat/{chat_id:path}')
async def list_tasks_by_chat_id_endpoint(request: Request, chat_id: str, user=Depends(get_verified_user)):
    if chat_id.startswith('local:') or chat_id.startswith('channel:'):
        socket_id = chat_id[len('local:') :]
        owner_id = get_user_id_from_session_pool(socket_id)
        if owner_id != user.id and user.role != 'admin':
            return {'task_ids': []}
    else:
        chat = await Chats.get_chat_by_id(chat_id)
        if chat is None or (chat.user_id != user.id and user.role != 'admin'):
            return {'task_ids': []}

    task_ids = await list_task_ids_by_item_id(request.app.state.redis, chat_id)

    log.debug(f'Task IDs for chat {chat_id}: {task_ids}')
    return {'task_ids': task_ids}


@app.post('/api/tasks/chat/{chat_id:path}/stop')
async def stop_tasks_by_chat_id_endpoint(request: Request, chat_id: str, user=Depends(get_verified_user)):
    if chat_id.startswith('local:') or chat_id.startswith('channel:'):
        socket_id = chat_id[len('local:') :]
        owner_id = get_user_id_from_session_pool(socket_id)
        if owner_id != user.id and user.role != 'admin':
            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=ERROR_MESSAGES.NOT_FOUND)
    else:
        chat = await Chats.get_chat_by_id(chat_id)
        if chat is None or (chat.user_id != user.id and user.role != 'admin'):
            raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=ERROR_MESSAGES.NOT_FOUND)
    result = await stop_item_tasks(request.app.state.redis, chat_id)
    return result


##################################
#
# Config Endpoints
#
##################################


@app.get('/api/config')
async def get_app_config(request: Request):
    user = None
    token = None

    auth_header = request.headers.get('Authorization')
    if auth_header:
        cred = get_http_authorization_cred(auth_header)
        if cred:
            token = cred.credentials

    if not token and 'token' in request.cookies:
        token = request.cookies.get('token')

    if token:
        try:
            data = decode_token(token)
        except Exception as e:
            log.debug(e)
            raise HTTPException(
                status_code=status.HTTP_401_UNAUTHORIZED,
                detail='Invalid token',
            )
        if data is not None and 'id' in data:
            user = await Users.get_user_by_id(data['id'])

    onboarding = False
    if user is None:
        onboarding = not await Users.has_users()

    user_count = await Users.get_num_users() if app.state.LICENSE_METADATA else None

    return {
        **({'onboarding': True} if onboarding else {}),
        'status': True,
        'name': app.state.WEBUI_NAME,
        'version': VERSION,
        'default_locale': str(DEFAULT_LOCALE),
        'oauth': {
            'providers': {name: config.get('name', name) for name, config in OAUTH_PROVIDERS.items()},
            'auto_redirect': app.state.config.OAUTH_AUTO_REDIRECT,
        },
        'features': {
            # --- Public: required by login/signup page pre-auth ---
            'auth': WEBUI_AUTH,
            'auth_trusted_header': bool(app.state.AUTH_TRUSTED_EMAIL_HEADER),
            'enable_signup_password_confirmation': ENABLE_SIGNUP_PASSWORD_CONFIRMATION,
            'enable_ldap': app.state.config.ENABLE_LDAP,
            'enable_signup': app.state.config.ENABLE_SIGNUP,
            'enable_login_form': app.state.config.ENABLE_LOGIN_FORM,
            'enable_websocket': ENABLE_WEBSOCKET_SUPPORT,
            # --- Authenticated: only consumed by logged-in frontend ---
            **(
                {
                    'enable_api_keys': app.state.config.ENABLE_API_KEYS,
                    'enable_password_change_form': app.state.config.ENABLE_PASSWORD_CHANGE_FORM,
                    'enable_version_update_check': ENABLE_VERSION_UPDATE_CHECK,
                    'enable_public_active_users_count': ENABLE_PUBLIC_ACTIVE_USERS_COUNT,
                    'enable_easter_eggs': ENABLE_EASTER_EGGS,
                    'enable_direct_connections': app.state.config.ENABLE_DIRECT_CONNECTIONS,
                    'enable_folders': app.state.config.ENABLE_FOLDERS,
                    'folder_max_file_count': app.state.config.FOLDER_MAX_FILE_COUNT,
                    'enable_channels': app.state.config.ENABLE_CHANNELS,
                    'enable_calendar': app.state.config.ENABLE_CALENDAR,
                    'enable_automations': app.state.config.ENABLE_AUTOMATIONS,
                    'enable_notes': app.state.config.ENABLE_NOTES,
                    'enable_web_search': app.state.config.ENABLE_WEB_SEARCH,
                    'enable_code_execution': app.state.config.ENABLE_CODE_EXECUTION,
                    'enable_code_interpreter': app.state.config.ENABLE_CODE_INTERPRETER,
                    'enable_image_generation': app.state.config.ENABLE_IMAGE_GENERATION,
                    'enable_autocomplete_generation': app.state.config.ENABLE_AUTOCOMPLETE_GENERATION,
                    'enable_community_sharing': app.state.config.ENABLE_COMMUNITY_SHARING,
                    'enable_message_rating': app.state.config.ENABLE_MESSAGE_RATING,
                    'enable_user_webhooks': app.state.config.ENABLE_USER_WEBHOOKS,
                    'enable_user_status': app.state.config.ENABLE_USER_STATUS,
                    'enable_admin_export': ENABLE_ADMIN_EXPORT,
                    'enable_admin_chat_access': ENABLE_ADMIN_CHAT_ACCESS,
                    'enable_admin_analytics': ENABLE_ADMIN_ANALYTICS,
                    'enable_google_drive_integration': app.state.config.ENABLE_GOOGLE_DRIVE_INTEGRATION,
                    'enable_onedrive_integration': app.state.config.ENABLE_ONEDRIVE_INTEGRATION,
                    'enable_memories': app.state.config.ENABLE_MEMORIES,
                    **(
                        {
                            'enable_onedrive_personal': ENABLE_ONEDRIVE_PERSONAL,
                            'enable_onedrive_business': ENABLE_ONEDRIVE_BUSINESS,
                        }
                        if app.state.config.ENABLE_ONEDRIVE_INTEGRATION
                        else {}
                    ),
                }
                if user is not None
                else {}
            ),
        },
        **(
            {
                'default_models': app.state.config.DEFAULT_MODELS,
                'default_pinned_models': app.state.config.DEFAULT_PINNED_MODELS,
                'default_prompt_suggestions': app.state.config.DEFAULT_PROMPT_SUGGESTIONS,
                **({'user_count': user_count} if user_count is not None else {}),
                'code': {
                    'engine': app.state.config.CODE_EXECUTION_ENGINE,
                    'interpreter_engine': app.state.config.CODE_INTERPRETER_ENGINE,
                },
                'audio': {
                    'tts': {
                        'engine': app.state.config.TTS_ENGINE,
                        'voice': app.state.config.TTS_VOICE,
                        'split_on': app.state.config.TTS_SPLIT_ON,
                    },
                    'stt': {
                        'engine': app.state.config.STT_ENGINE,
                    },
                },
                'file': {
                    'max_size': app.state.config.FILE_MAX_SIZE,
                    'max_count': app.state.config.FILE_MAX_COUNT,
                    'image_compression': {
                        'width': app.state.config.FILE_IMAGE_COMPRESSION_WIDTH,
                        'height': app.state.config.FILE_IMAGE_COMPRESSION_HEIGHT,
                    },
                },
                'permissions': {**app.state.config.USER_PERMISSIONS},
                'google_drive': {
                    'client_id': GOOGLE_DRIVE_CLIENT_ID.value,
                    'api_key': GOOGLE_DRIVE_API_KEY.value,
                },
                'onedrive': {
                    'client_id_personal': ONEDRIVE_CLIENT_ID_PERSONAL,
                    'client_id_business': ONEDRIVE_CLIENT_ID_BUSINESS,
                    'sharepoint_url': ONEDRIVE_SHAREPOINT_URL.value,
                    'sharepoint_tenant_id': ONEDRIVE_SHAREPOINT_TENANT_ID.value,
                },
                'ui': {
                    'pending_user_overlay_title': app.state.config.PENDING_USER_OVERLAY_TITLE,
                    'pending_user_overlay_content': app.state.config.PENDING_USER_OVERLAY_CONTENT,
                    'response_watermark': app.state.config.RESPONSE_WATERMARK,
                    'iframe_csp': IFRAME_CSP,
                },
                'license_metadata': app.state.LICENSE_METADATA,
                **(
                    {
                        'active_entries': app.state.USER_COUNT,
                    }
                    if user.role == 'admin'
                    else {}
                ),
            }
            if user is not None and (user.role in ['admin', 'user'])
            else {
                **(
                    {
                        'ui': {
                            'pending_user_overlay_title': app.state.config.PENDING_USER_OVERLAY_TITLE,
                            'pending_user_overlay_content': app.state.config.PENDING_USER_OVERLAY_CONTENT,
                        }
                    }
                    if user and user.role == 'pending'
                    else {}
                ),
                **(
                    {
                        'metadata': {
                            'login_footer': app.state.LICENSE_METADATA.get('login_footer', ''),
                            'auth_logo_position': app.state.LICENSE_METADATA.get('auth_logo_position', ''),
                        }
                    }
                    if app.state.LICENSE_METADATA
                    else {}
                ),
            }
        ),
    }


class UrlForm(BaseModel):
    url: str


@app.get('/api/webhook')
async def get_webhook_url(user=Depends(get_admin_user)):
    return {
        'url': app.state.config.WEBHOOK_URL,
    }


@app.post('/api/webhook')
async def update_webhook_url(form_data: UrlForm, user=Depends(get_admin_user)):
    app.state.config.WEBHOOK_URL = form_data.url
    app.state.WEBHOOK_URL = app.state.config.WEBHOOK_URL
    return {'url': app.state.config.WEBHOOK_URL}


@app.get('/api/version')
async def get_app_version():
    return {
        'version': VERSION,
        'deployment_id': DEPLOYMENT_ID,
    }


@app.get('/api/version/updates')
async def get_app_latest_release_version(user=Depends(get_verified_user)):
    if not ENABLE_VERSION_UPDATE_CHECK:
        log.debug(f'Version update check is disabled, returning current version as latest version')
        return {'current': VERSION, 'latest': VERSION}
    try:
        timeout = aiohttp.ClientTimeout(total=1)
        async with aiohttp.ClientSession(timeout=timeout, trust_env=True) as session:
            async with session.get(
                'https://api.github.com/repos/open-webui/open-webui/releases/latest',
                ssl=AIOHTTP_CLIENT_SESSION_SSL,
            ) as response:
                response.raise_for_status()
                data = await response.json()
                latest_version = data['tag_name']

                return {'current': VERSION, 'latest': latest_version[1:]}
    except Exception as e:
        log.debug(e)
        return {'current': VERSION, 'latest': VERSION}


@app.get('/api/changelog')
async def get_app_changelog():
    return {key: CHANGELOG[key] for idx, key in enumerate(CHANGELOG) if idx < 5}


@app.get('/api/usage')
async def get_current_usage(user=Depends(get_verified_user)):
    """
    Get current usage statistics for Open WebUI.
    This is an experimental endpoint and subject to change.
    """
    try:
        # If public visibility is disabled, only allow admins to access this endpoint
        if not ENABLE_PUBLIC_ACTIVE_USERS_COUNT and user.role != 'admin':
            raise HTTPException(
                status_code=status.HTTP_403_FORBIDDEN,
                detail='Access denied. Only administrators can view usage statistics.',
            )

        return {
            'model_ids': get_models_in_use(),
            'user_count': await Users.get_active_user_count(),
        }
    except HTTPException:
        raise
    except Exception as e:
        log.error(f'Error getting usage statistics: {e}')
        raise HTTPException(status_code=500, detail='Internal Server Error')


# --- OAuth Login & Callback ---


# Initialize OAuth client manager with any MCP tool servers using OAuth 2.1
if len(app.state.config.TOOL_SERVER_CONNECTIONS) > 0:
    for tool_server_connection in app.state.config.TOOL_SERVER_CONNECTIONS:
        if tool_server_connection.get('type', 'openapi') == 'mcp':
            server_id = tool_server_connection.get('info', {}).get('id')
            auth_type = tool_server_connection.get('auth_type', 'none')

            if server_id and auth_type in ('oauth_2.1', 'oauth_2.1_static'):
                try:
                    oauth_client_info = resolve_oauth_client_info(tool_server_connection)
                    app.state.oauth_client_manager.add_client(
                        f'mcp:{server_id}',
                        OAuthClientInformationFull(**oauth_client_info),
                    )
                except Exception as e:
                    log.error(f'Error adding OAuth client for MCP tool server {server_id}: {e}')
                    pass

try:
    if ENABLE_STAR_SESSIONS_MIDDLEWARE:
        redis_session_store = RedisStore(
            url=REDIS_URL,
            prefix=(f'{REDIS_KEY_PREFIX}:session:' if REDIS_KEY_PREFIX else 'session:'),
        )

        app.add_middleware(SessionAutoloadMiddleware)
        app.add_middleware(
            StarSessionsMiddleware,
            store=redis_session_store,
            cookie_name='owui-session',
            cookie_same_site=WEBUI_SESSION_COOKIE_SAME_SITE,
            cookie_https_only=WEBUI_SESSION_COOKIE_SECURE,
        )
        log.info('Using Redis for session')
    else:
        raise ValueError('No Redis URL provided')
except Exception as e:
    app.add_middleware(
        SessionMiddleware,
        secret_key=WEBUI_SECRET_KEY,
        session_cookie='owui-session',
        same_site=WEBUI_SESSION_COOKIE_SAME_SITE,
        https_only=WEBUI_SESSION_COOKIE_SECURE,
    )


async def register_client(request, client_id: str) -> bool:
    server_type, server_id = client_id.split(':', 1)

    connection = None
    connection_idx = None

    for idx, conn in enumerate(request.app.state.config.TOOL_SERVER_CONNECTIONS or []):
        if conn.get('type', 'openapi') == server_type:
            info = conn.get('info', {})
            if info.get('id') == server_id:
                connection = conn
                connection_idx = idx
                break

    if connection is None or connection_idx is None:
        log.warning(f'Unable to locate MCP tool server configuration for client {client_id} during re-registration')
        return False

    server_url = connection.get('url')
    auth_type = connection.get('auth_type', 'none')
    oauth_server_key = (connection.get('config') or {}).get('oauth_server_key')

    try:
        if auth_type == 'oauth_2.1_static':
            # Static credentials: rebuild from admin-provided credentials + fresh metadata
            info = connection.get('info', {})
            oauth_client_id = info.get('oauth_client_id') or ''
            oauth_client_secret = info.get('oauth_client_secret') or ''
            if not oauth_client_id or not oauth_client_secret:
                # Fall back to blob for backward compatibility
                existing_client_info = info.get('oauth_client_info', '')
                if not existing_client_info:
                    log.error(f'No stored OAuth client info for static client {client_id}')
                    return False
                existing_data = decrypt_data(existing_client_info)
                oauth_client_id = oauth_client_id or existing_data.get('client_id', '')
                oauth_client_secret = oauth_client_secret or existing_data.get('client_secret', '')
            oauth_client_info = await get_oauth_client_info_with_static_credentials(
                request,
                client_id,
                server_url,
                oauth_client_id=oauth_client_id,
                oauth_client_secret=oauth_client_secret,
            )
        else:
            oauth_client_info = await get_oauth_client_info_with_dynamic_client_registration(
                request,
                client_id,
                server_url,
                oauth_server_key,
            )
    except Exception as e:
        log.error(f'OAuth client re-registration failed for {client_id}: {e}')
        return False

    try:
        connections = request.app.state.config.TOOL_SERVER_CONNECTIONS
        connections[connection_idx] = {
            **connection,
            'info': {
                **connection.get('info', {}),
                'oauth_client_info': encrypt_data(oauth_client_info.model_dump(mode='json')),
            },
        }
        # Re-assign the full list to trigger AppConfig.__setattr__ → ConfigVar.save()
        # (in-place list mutation via list[idx] = ... does not trigger __setattr__)
        request.app.state.config.TOOL_SERVER_CONNECTIONS = connections
    except Exception as e:
        log.error(f'Failed to persist updated OAuth client info for tool server {client_id}: {e}')
        return False

    oauth_client_manager.remove_client(client_id)
    oauth_client_manager.add_client(client_id, oauth_client_info)
    log.info(f'Re-registered OAuth client {client_id} for tool server')
    return True


@app.get('/oauth/clients/{client_id}/authorize')
async def oauth_client_authorize(
    client_id: str,
    request: Request,
    response: Response,
    user=Depends(get_verified_user),
):
    # ensure_valid_client_registration
    client = oauth_client_manager.get_client(client_id)
    client_info = oauth_client_manager.get_client_info(client_id)
    if client is None or client_info is None:
        raise HTTPException(status.HTTP_404_NOT_FOUND)

    if not await oauth_client_manager._preflight_authorization_url(client, client_info):
        log.info(
            'Detected invalid OAuth client %s; attempting re-registration',
            client_id,
        )

        registered = await register_client(request, client_id)
        if not registered:
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail='Failed to re-register OAuth client',
            )

        client = oauth_client_manager.get_client(client_id)
        client_info = oauth_client_manager.get_client_info(client_id)
        if client is None or client_info is None:
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail='OAuth client unavailable after re-registration',
            )

        if not await oauth_client_manager._preflight_authorization_url(client, client_info):
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail='OAuth client registration is still invalid after re-registration',
            )

    return await oauth_client_manager.handle_authorize(request, client_id=client_id)


@app.get('/oauth/clients/{client_id}/callback')
async def oauth_client_callback(
    client_id: str,
    request: Request,
    response: Response,
    user=Depends(get_verified_user),
):
    return await oauth_client_manager.handle_callback(
        request,
        client_id=client_id,
        user_id=user.id if user else None,
        response=response,
    )


@app.get('/oauth/{provider}/login')
async def oauth_login(provider: str, request: Request):
    return await oauth_manager.handle_login(request, provider)


@app.get('/oauth/{provider}/login/callback')
@app.get('/oauth/{provider}/callback')  # Legacy endpoint
async def oauth_login_callback(
    provider: str,
    request: Request,
    response: Response,
    db: AsyncSession = Depends(get_async_session),
):
    """Handle the OAuth provider callback.

    Resolution order:
    1. Match by subject ID bound to the provider.
    2. If ``OAUTH_MERGE_ACCOUNTS_BY_EMAIL`` is enabled, match by email
       (note: some providers do not verify email addresses).
    3. If no match and ``ENABLE_OAUTH_SIGNUP`` is enabled, create a new user
       (fails if the email is already registered).
    """
    return await oauth_manager.handle_callback(request, provider, response, db=db)


############################
# OIDC Back-Channel Logout
############################


@app.post('/oauth/backchannel-logout')
async def oauth_backchannel_logout(
    request: Request,
    db: AsyncSession = Depends(get_async_session),
):
    if not ENABLE_OAUTH_BACKCHANNEL_LOGOUT:
        raise HTTPException(status_code=404)
    return await oauth_manager.handle_backchannel_logout(request, db=db)


@app.get('/manifest.json')
async def get_manifest_json():
    if app.state.EXTERNAL_PWA_MANIFEST_URL:
        session = await get_session()
        async with session.get(
            app.state.EXTERNAL_PWA_MANIFEST_URL,
            ssl=AIOHTTP_CLIENT_SESSION_SSL,
        ) as r:
            r.raise_for_status()
            return await r.json()
    else:
        return {
            'name': app.state.WEBUI_NAME,
            'short_name': app.state.WEBUI_NAME,
            'description': f'{app.state.WEBUI_NAME} is an open, extensible, user-friendly interface for AI that adapts to your workflow.',
            'start_url': '/',
            'display': 'standalone',
            'background_color': '#343541',
            'icons': [
                {
                    'src': '/static/logo.png',
                    'type': 'image/png',
                    'sizes': '500x500',
                    'purpose': 'any',
                },
                {
                    'src': '/static/logo.png',
                    'type': 'image/png',
                    'sizes': '500x500',
                    'purpose': 'maskable',
                },
            ],
            'share_target': {
                'action': '/',
                'method': 'GET',
                'params': {'text': 'shared'},
            },
        }


@app.get('/opensearch.xml')
async def get_opensearch_xml():
    xml_content = rf"""
    <OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/" xmlns:moz="http://www.mozilla.org/2006/browser/search/">
    <ShortName>{app.state.WEBUI_NAME}</ShortName>
    <Description>Search {app.state.WEBUI_NAME}</Description>
    <InputEncoding>UTF-8</InputEncoding>
    <Image width="16" height="16" type="image/x-icon">{app.state.config.WEBUI_URL}/static/favicon.png</Image>
    <Url type="text/html" method="get" template="{app.state.config.WEBUI_URL}/?q={'{searchTerms}'}"/>
    <moz:SearchForm>{app.state.config.WEBUI_URL}</moz:SearchForm>
    </OpenSearchDescription>
    """
    return Response(content=xml_content, media_type='application/xml')


def _sync_db_ping() -> None:
    """Verify the database is reachable with a simple SELECT 1.

    Uses a raw connection from the engine pool instead of the thread-local
    ScopedSession.  This is necessary because CommitSessionMiddleware
    deliberately skips healthcheck paths (/health, /ready, /health/db),
    so any ScopedSession opened on a healthcheck worker thread is never
    rolled back or removed.  If the session ever enters an invalid state
    (e.g. after a transient connection error), it stays broken on that
    thread permanently, causing PendingRollbackError on every subsequent
    probe — exactly the failure reported in #24605.

    A raw ``engine.connect()`` context manager obtains a fresh connection
    from the pool, executes the ping, and deterministically returns the
    connection regardless of success or failure.
    """
    with engine.connect() as conn:
        conn.execute(text('SELECT 1'))


async def async_db_ping() -> None:
    await asyncio.to_thread(_sync_db_ping)


@app.get('/health')
async def healthcheck():
    return {'status': True}


@app.get('/ready')
async def readiness_check():
    """
    Returns 200 only when the application is ready to accept traffic.
    """

    # Ensure application startup work has completed
    if not getattr(app.state, 'startup_complete', False):
        log.info('Readiness check failed: startup not complete')
        raise HTTPException(
            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
            detail='Startup not complete',
        )

    # Check database connectivity
    try:
        await async_db_ping()
    except Exception as e:
        log.warning(f'Readiness check DB ping failed: {e!r}')
        raise HTTPException(
            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
            detail='Database not ready',
        )

    # Check Redis connectivity if configured
    redis = app.state.redis
    if redis is not None:
        try:
            pong = await redis.ping()
            if pong is False:
                raise Exception('Redis PING returned False')
        except Exception as e:
            log.warning(f'Readiness check Redis ping failed: {e!r}')
            raise HTTPException(
                status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
                detail='Redis not ready',
            )

    return {'status': True}


@app.get('/health/db')
async def check_db_health():
    """Verify database connectivity by issuing a lightweight ping."""
    await async_db_ping()
    return {'status': True}
# --- static assets & files ---
# Serve build-time static assets (CSS, JS, images, favicon, etc.)
app.mount('/static', StaticFiles(directory=STATIC_DIR), name='static')


@app.get('/cache/{path:path}')
async def serve_cache_file(
    path: str,
    user=Depends(get_verified_user),
):
    """Serve cached files (e.g. tool outputs) with path-traversal protection.

    Only ``image/*``, ``audio/*``, and ``video/*`` MIME types are served inline;
    everything else gets a ``Content-Disposition: attachment`` header to prevent
    XSS from user-generated HTML stored in the cache directory.
    """
    file_path = os.path.abspath(os.path.join(CACHE_DIR, path))
    # trailing os.sep is required: without it, a path resolving to a sibling
    # whose name starts with the cache-dir basename (e.g. cache_backup) passes
    cache_root = os.path.abspath(CACHE_DIR) + os.sep
    if not file_path.startswith(cache_root):
        raise HTTPException(status_code=404, detail='File not found')
    if not os.path.isfile(file_path):
        raise HTTPException(status_code=404, detail='File not found')

    mime, _ = mimetypes.guess_type(file_path)
    inline_safe = mime and mime.split('/', 1)[0] in {'image', 'audio', 'video'}
    headers = {'X-Content-Type-Options': 'nosniff'}
    if not inline_safe:
        headers['Content-Disposition'] = f'attachment; filename="{os.path.basename(file_path)}"'
    return FileResponse(file_path, headers=headers)


def swagger_ui_html(*args, **kwargs):
    return get_swagger_ui_html(
        *args,
        **kwargs,
        swagger_js_url='/static/swagger-ui/swagger-ui-bundle.js',
        swagger_css_url='/static/swagger-ui/swagger-ui.css',
        swagger_favicon_url='/static/swagger-ui/favicon.png',
    )


applications.get_swagger_ui_html = swagger_ui_html

if os.path.exists(FRONTEND_BUILD_DIR):
    mimetypes.add_type('text/javascript', '.js')
    app.mount(
        '/',
        SPAStaticFiles(directory=FRONTEND_BUILD_DIR, html=True),
        name='spa-static-files',
    )
else:
    log.warning(f"Frontend build directory not found at '{FRONTEND_BUILD_DIR}'. Serving API only.")
