# Redmine plugin for Document Management System "Features"
#
# Copyright (C) 2011-15 Karel Pičman <karel.picman@kontron.com>
#
# 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.

class DmsfLinksController < ApplicationController
  unloadable

  model_object DmsfLink
  before_filter :find_model_object, :only => [:destroy, :restore]
  before_filter :find_link_project
  before_filter :authorize

  def new
    if (Redmine::VERSION::MAJOR >= 3)
      @dmsf_link = DmsfLink.new(l_params)
    else
      @dmsf_link = DmsfLink.new(:project_id => params[:project_id])
    end

    if params[:dmsf_link].present?
      # Reload
      @dmsf_link.dmsf_folder_id = params[:dmsf_link][:dmsf_folder_id]                       # TODO: Add stuff in here for external links so that if error occurs, repopulate the same
      @dmsf_file_id = params[:dmsf_link][:dmsf_file_id]
      @type = params[:dmsf_link][:type]
      @link_external = (params[:external_link] == 'true')
      @dmsf_link.target_project_id = params[:dmsf_link][:target_project_id]
      @target_folder_id = params[:dmsf_link][:target_folder_id].to_i if params[:reload].blank? && DmsfLinksHelper.is_a_number?(params[:dmsf_link][:target_folder_id])
      if @type == 'link_to'
        if params[:dmsf_link][:dmsf_file_id].present?
          file = DmsfFile.find_by_id params[:dmsf_link][:dmsf_file_id]
          @dmsf_link.name = file.title if file
        else
          folder = DmsfFolder.find_by_id params[:dmsf_link][:dmsf_folder_id]
          @dmsf_link.name = folder.title if folder
        end
      else
        if params[:dmsf_link][:target_file_id].present?
          @target_file_id = params[:dmsf_link][:target_file_id]
          file = DmsfFile.find_by_id @target_file_id

          if file
            folder = DmsfFolder.find_by_id params[:dmsf_link][:target_folder_id]
            if (folder && (folder.project_id == @dmsf_link.target_project_id) && folder.files.include?(file)) || folder.nil?
              @dmsf_link.name = file.title
            end
          end
        else
          folder = DmsfFolder.find_by_id params[:dmsf_link][:target_folder_id]

          if folder
            if folder.project_id == @dmsf_link.target_project_id
              @dmsf_link.name = folder.title if folder
            end
          end
        end
      end
    else
      # Link from/to
      @dmsf_link.dmsf_folder_id = params[:dmsf_folder_id]
      @dmsf_file_id = params[:dmsf_file_id]
      @type = params[:type]
      @link_external = false
      @dmsf_link.target_project_id = params[:project_id]
      @dmsf_link.project_id = params[:project_id]
      @target_folder_id = params[:dmsf_folder_id].to_i if params[:dmsf_folder_id].present?
      if @type == 'link_to'
        if @dmsf_file_id
          file = DmsfFile.find_by_id @dmsf_file_id
          @dmsf_link.name = file.title if file
        else
          folder = DmsfFolder.find_by_id @target_folder_id
          @dmsf_link.name = folder.title if folder
        end
      end
    end

    render :layout => !request.xhr?
  end

  def create
    @dmsf_link = DmsfLink.new
    @dmsf_link.user = User.current

    if params[:dmsf_link][:type] == 'link_from'
      # Link from
      @dmsf_link.project_id = params[:dmsf_link][:project_id]
      @dmsf_link.dmsf_folder_id = params[:dmsf_link][:dmsf_folder_id]
      @dmsf_link.target_project_id = params[:dmsf_link][:target_project_id]
      @link_external = (params[:external_link] == 'true')
      @dmsf_link.external_url = params[:dmsf_link][:external_url]
      if (@link_external)
        @dmsf_link.target_type = 'DmsfUrl'
      elsif params[:dmsf_link][:target_file_id].present?
        @dmsf_link.target_id = params[:dmsf_link][:target_file_id]
        @dmsf_link.target_type = DmsfFile.model_name
      else
        @dmsf_link.target_id = DmsfLinksHelper.is_a_number?(params[:dmsf_link][:target_folder_id]) ? params[:dmsf_link][:target_folder_id].to_i : nil
        @dmsf_link.target_type = DmsfFolder.model_name
      end
      @dmsf_link.name = params[:dmsf_link][:name]

      if @dmsf_link.save
        flash[:notice] = l(:notice_successful_create)
        redirect_to dmsf_folder_path(:id => @project.id, :folder_id => @dmsf_link.dmsf_folder_id)
      else
        @dmsf_file_id = params[:dmsf_link][:dmsf_file_id]
        @type = params[:dmsf_link][:type]
        @target_folder_id = params[:dmsf_link][:target_folder_id].to_i if DmsfLinksHelper.is_a_number?(params[:dmsf_link][:target_folder_id])
        @target_file_id = @dmsf_link.target_id if @dmsf_link.target_type == DmsfFile.model_name
        render :action => 'new'
      end
    else
      # Link to
      @dmsf_link.project_id = params[:dmsf_link][:target_project_id]
      @dmsf_link.dmsf_folder_id = DmsfLinksHelper.is_a_number?(params[:dmsf_link][:target_folder_id]) ? params[:dmsf_link][:target_folder_id].to_i : nil
      @dmsf_link.target_project_id = params[:dmsf_link][:project_id]
      @link_external = (params[:external_link] == 'true')
      @dmsf_link.external_url = params[:dmsf_link][:external_url]
      if (@link_external)
        @dmsf_link.target_type = 'DmsfUrl'
      elsif params[:dmsf_link][:dmsf_file_id].present?
        @dmsf_link.target_id = params[:dmsf_link][:dmsf_file_id]
        @dmsf_link.target_type = DmsfFile.model_name
      else
        @dmsf_link.target_id = params[:dmsf_link][:dmsf_folder_id]
        @dmsf_link.target_type = DmsfFolder.model_name
      end
      @dmsf_link.name = params[:dmsf_link][:name]

      if @dmsf_link.save
        flash[:notice] = l(:notice_successful_create)
        if params[:dmsf_link][:dmsf_file_id].present?
          redirect_to dmsf_file_path(@dmsf_link.target_file)
        else
          redirect_to edit_dmsf_path(:id => params[:dmsf_link][:project_id], :folder_id => params[:dmsf_link][:dmsf_folder_id])
        end
      else
        @dmsf_file_id = params[:dmsf_link][:dmsf_file_id]
        @type = params[:dmsf_link][:type]
        @target_folder_id = @dmsf_link.dmsf_folder_id
        @dmsf_link.target_project_id = @dmsf_link.project.id
        @dmsf_link.project_id = params[:dmsf_link][:project_id]
        @dmsf_link.dmsf_folder_id = params[:dmsf_link][:dmsf_folder_id]
        render :action => 'new'
      end
    end
  end

  def destroy
    begin
    if @dmsf_link
      commit = params[:commit] == 'yes'
      if @dmsf_link.delete(commit)
        flash[:notice] = l(:notice_successful_delete)
      else
        @dmsf_link.errors.each do |e, msg|
          flash[:error] = msg
        end
      end
    end
    rescue Exception => e
      errors[:base] << e.message
      return false
    end

    redirect_to :back
  end

  def restore
    if @dmsf_link.restore
      flash[:notice] = l(:notice_dmsf_link_restored)
    end

    redirect_to :back
  end

  private

  def l_params
    params.fetch(:dmsf_link, {}).permit(:project_id)
  end

  def find_link_project
    if @dmsf_link
      @project = @dmsf_link.project
    else
      if params[:dmsf_link].present?
        if params[:dmsf_link].fetch(:project_id, nil).blank?
          pid = params[:dmsf_link].fetch(:target_project_id, nil)
        else
          pid = params[:dmsf_link][:project_id]
        end
      else
        pid = params[:project_id]
      end
      Rails.logger.error("pid #{pid}")
      @project = Project.find(pid)
    end
  rescue ActiveRecord::RecordNotFound
    render_404
  end

end