# frozen_string_literal: true

# Redmine plugin for Document Management System "Features"
#
# Karel Pičman <karel.picman@kontron.com>
#
# This file is part of Redmine DMSF plugin.
#
# Redmine DMSF plugin 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 3 of the License, or (at your option) any
# later version.
#
# Redmine DMSF plugin 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 Redmine DMSF plugin. If not, see
# <https://www.gnu.org/licenses/>.

require "#{File.dirname(__FILE__)}/../../lib/redmine_dmsf/preview"

# Context menu controller
class DmsfContextMenusController < ApplicationController
  helper :context_menus
  helper :watchers
  helper :dmsf

  before_action :find_folder
  before_action :find_dmsf_file
  before_action :find_dmsf_folder
  before_action :find_dmsf_project

  def dmsf
    if @dmsf_file
      @locked = @dmsf_file.locked?
      @project = @dmsf_file.project
      @allowed = User.current.allowed_to? :file_manipulation, @project
      @unlockable = @allowed && @dmsf_file.unlockable? && (!@dmsf_file.locked_for_user? ||
          User.current.allowed_to?(:force_file_unlock, @project))
      @email_allowed = User.current.allowed_to?(:email_documents, @project)
      @preview = RedmineDmsf.office_bin.present? && RedmineDmsf::Preview.office_available?
    elsif @dmsf_folder
      @locked = @dmsf_folder.locked?
      @project = @dmsf_folder.project
      @allowed = User.current.allowed_to?(:folder_manipulation, @project)
      @unlockable = @allowed && @dmsf_folder.unlockable? && (!@dmsf_folder.locked_for_user? ||
        User.current.allowed_to?(:force_file_unlock, @project))
      @email_allowed = User.current.allowed_to?(:email_documents, @project)
    elsif @dmsf_link # url link
      @locked = false
      @unlockable = false
      @project = @dmsf_link.project
      @allowed = User.current.allowed_to? :file_manipulation, @project
      @email_allowed = false
    elsif @dmsf_project # project
      @locked = false
      @unlockable = false
      @project = @dmsf_project
      @allowed = User.current.allowed_to? :view_project_watchers, @project
      @email_allowed = false
    else # multiple selection
      @project = project
      @locked = false
      @unlockable = false
      @allowed = User.current.allowed_to?(:file_manipulation, @project) &&
                 User.current.allowed_to?(:folder_manipulation, @project)
      @email_allowed = User.current.allowed_to?(:email_documents, @project)
    end
    @back_url = params['back_url'].presence || dmsf_folder_path(id: @project, folder_id: @folder)
    @notifications = Setting.notified_events.include?('dmsf_legacy_notifications')
    render layout: false
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  def trash
    if @dmsf_file
      @project = @dmsf_file.project
      @allowed_restore = User.current.allowed_to? :file_manipulation, @project
      @allowed_delete = User.current.allowed_to? :file_delete, @project
    elsif @dmsf_folder
      @project = @dmsf_folder.project
      @allowed_restore = User.current.allowed_to? :folder_manipulation, @project
      @allowed_delete = @allowed_restore
    elsif @dmsf_link # url link
      @project = @dmsf_link.project
      @allowed_restore = User.current.allowed_to? :file_manipulation, @project
      @allowed_delete = User.current.allowed_to? :file_delete, @project
    else # multiple selection
      @project = project
      @allowed_restore = User.current.allowed_to?(:file_manipulation, @project) &&
                         User.current.allowed_to?(:folder_manipulation, @project)
      @allowed_delete = User.current.allowed_to?(:file_delete, @project) &&
                        User.current.allowed_to?(:folder_manipulation, @project)
    end
    render layout: false
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  private

  def project
    prj = nil
    params[:ids].each do |id|
      item = case id
             when /file-(\d+)/
               DmsfFile.find_by(id: Regexp.last_match(1))
             when /(file|url)-link-(\d+)/
               DmsfLink.find_by(id: Regexp.last_match(2))
             when /folder-(\d+)/
               DmsfFolder.find_by(id: Regexp.last_match(1))
             when /folder-link-(\d+)/
               DmsfLink.find_by(id: Regexp.last_match(1))
             end
      prj ||= item&.project
      return nil if prj != item&.project
    end
    prj
  end

  def find_folder
    @folder = DmsfFolder.find params[:folder_id] if params[:folder_id].present?
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  def find_dmsf_file
    return unless params[:ids].present? && params[:ids].size == 1 && !@dmsf_folder

    case params[:ids][0]
    when /file-(\d+)/
      @dmsf_file = DmsfFile.find_by(id: Regexp.last_match(1))
    when /(file|url)-link-(\d+)/
      @dmsf_link = DmsfLink.find_by(id: Regexp.last_match(2))
      @dmsf_file = DmsfFile.find_by(id: @dmsf_link.target_id) if @dmsf_link && @dmsf_link.target_type != 'DmsfUrl'
    end
  end

  def find_dmsf_folder
    return unless params[:ids].present? && params[:ids].size == 1 && !@dmsf_file

    case params[:ids][0]
    when /folder-(\d+)/
      @dmsf_folder = DmsfFolder.find_by(id: Regexp.last_match(1))
    when /folder-link-(\d+)/
      @dmsf_link = DmsfLink.find_by(id: Regexp.last_match(1))
      @dmsf_folder = DmsfFolder.find_by(id: @dmsf_link.target_id) if @dmsf_link
    end
  end

  def find_dmsf_project
    return unless params[:ids].present? && params[:ids].size == 1 && !@dmsf_project &&
                  params[:ids][0] =~ /project-(\d+)/

    @dmsf_project = Project.find_by(id: Regexp.last_match(1))
  end
end