Keep database records so we can provide a structured export

To be removed in
https://community.openproject.org/work_packages/63114/activity

db/migrate/20210615150558_aggregate_journals.rb

@@ -34,7 +34,6 @@ class AggregateJournals < ActiveRecord::Migration[6.1]
 
   # Classes have been removed by now
   class WikiContent < ApplicationRecord; end
-  class MeetingContent < ApplicationRecord; end
 
   # Class has been changed in the meantime.
   # It received a status enum which's column does not yet exist when this migration runs.

modules/meeting/app/models/meeting.rb

@@ -41,6 +41,12 @@ class Meeting < ApplicationRecord
   belongs_to :recurring_meeting, optional: true
   has_one :scheduled_meeting, inverse_of: :meeting
 
+  # Legacy association to minutes, agendas, contents
+  # to be removed in 17.0
+  has_one :agenda, dependent: :destroy, class_name: "MeetingAgenda"
+  has_one :minutes, dependent: :destroy, class_name: "MeetingMinutes"
+  has_many :contents, -> { readonly }, class_name: "MeetingContent"
+
   has_many :participants,
            dependent: :destroy,
            class_name: "MeetingParticipant",

modules/meeting/app/models/meeting_agenda.rb

@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+#-- copyright
+# OpenProject is an open source project management software.
+# Copyright (C) the OpenProject GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See COPYRIGHT and LICENSE files for more details.
+#++
+
+class MeetingAgenda < MeetingContent
+  def lock!(user = User.current)
+    self.journal_notes = I18n.t("events.meeting_agenda_closed")
+    self.author = user
+    self.locked = true
+    save
+  end
+
+  def unlock!(user = User.current)
+    self.journal_notes = I18n.t("events.meeting_agenda_opened")
+    self.author = user
+    self.locked = false
+    save
+  end
+
+  def editable?
+    !locked?
+  end
+end

modules/meeting/app/models/meeting_content.rb

@@ -0,0 +1,81 @@
+# frozen_string_literal: true
+#-- copyright
+# OpenProject is an open source project management software.
+# Copyright (C) the OpenProject GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See COPYRIGHT and LICENSE files for more details.
+#++
+#
+
+class MeetingContent < ApplicationRecord
+  include OpenProject::Journal::AttachmentHelper
+
+  belongs_to :meeting
+  # Show the project on activity and search views
+  has_one :project, through: :meeting
+  belongs_to :author, class_name: "User"
+
+  acts_as_attachable(
+    after_remove: :attachments_changed,
+    order: "#{Attachment.table_name}.file",
+    add_on_new_permission: :create_meetings,
+    add_on_persisted_permission: :edit_meetings,
+    view_permission: :view_meetings,
+    delete_permission: :edit_meetings,
+    modification_blocked: ->(*) { false }
+  )
+
+  acts_as_journalized
+  acts_as_event type: Proc.new { |o| o.class.to_s.underscore.dasherize.to_s },
+                title: Proc.new { |o| "#{o.class.model_name.human}: #{o.meeting.title}" },
+                url: Proc.new { |o| { controller: "/meetings", action: "show", id: o.meeting } }
+
+  scope :visible, ->(*args) {
+    includes(meeting: :project)
+      .references(:projects)
+      .merge(Project.allowed_to(args.first || User.current, :view_meetings))
+  }
+
+  def editable?
+    true
+  end
+
+  def diff(version_to = nil, version_from = nil)
+    version_to = version_to ? version_to.to_i : version
+    version_from = version_from ? version_from.to_i : version_to - 1
+    version_to, version_from = version_from, version_to unless version_from < version_to
+
+    content_to = journals.find_by_version(version_to)
+    content_from = journals.find_by_version(version_from)
+
+    content_to && content_from ? Wikis::Diff.new(content_to, content_from) : nil
+  end
+
+  def at_version(version)
+    journals
+      .joins("JOIN meeting_contents ON meeting_contents.id = journals.journable_id AND meeting_contents.type='#{self.class}'")
+      .where(version:)
+      .first.data
+  end
+end

modules/meeting/app/models/meeting_minutes.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+#-- copyright
+# OpenProject is an open source project management software.
+# Copyright (C) the OpenProject GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See COPYRIGHT and LICENSE files for more details.
+#++
+
+class MeetingMinutes < MeetingContent
+  def editable?
+    meeting.agenda.present? && meeting.agenda.locked?
+  end
+end

modules/meeting/lib/open_project/meeting/engine.rb

@@ -190,6 +190,8 @@ module OpenProject::Meeting
     patch_with_namespace :BasicData, :SettingSeeder
 
     replace_principal_references "Meeting" => %i[author_id],
+                                 "MeetingAgenda" => %i[author_id],
+                                 "MeetingMinutes" => %i[author_id],
                                  "MeetingAgendaItem" => %i[author_id presenter_id],
                                  "MeetingParticipant" => :user_id,
                                  "MeetingOutcome" => :author_id