# frozen_string_literal: true

# Redmine - project management software
# Copyright (C) 2006-  Jean-Philippe Lang
#
# 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 DocumentsController < ApplicationController
  self.model_object = Document

  default_search_scope :documents
  before_action :find_project_by_project_id, :only => [:index, :new, :create]
  before_action :find_model_object, :except => [:index, :new, :create]
  before_action :find_project_from_association, :except => [:index, :new, :create]
  before_action :authorize
  accept_api_auth :index, :show, :create, :update, :destroy

  helper :attachments
  helper :custom_fields

  def index
    respond_to do |format|
      format.html do
        @sort_by = %w(category date title author).include?(params[:sort_by]) ? params[:sort_by] : 'category'
        documents = @project.documents.includes(:attachments, :category).to_a
        case @sort_by
        when 'date'
          documents.sort!{|a, b| b.updated_on <=> a.updated_on}
          @grouped = documents.group_by {|d| d.updated_on.to_date}
        when 'title'
          @grouped = documents.group_by {|d| d.title.first.upcase}
        when 'author'
          @grouped = documents.select{|d| d.attachments.any?}.group_by {|d| d.attachments.last.author}
        else
          @grouped = documents.group_by(&:category)
        end
        @document = @project.documents.build
        render :layout => false if request.xhr?
      end
      format.api do
        @offset, @limit = api_offset_and_limit
        scope = @project.documents
        @document_count = scope.count
        @documents = scope.includes(:project, :category, :attachments).
                        preload(:custom_values => :custom_field).
                        order("#{Document.table_name}.created_on DESC, #{Document.table_name}.id DESC").
                        limit(@limit).
                        offset(@offset).
                        to_a
      end
    end
  end

  def show
    @attachments = @document.attachments.to_a
    respond_to do |format|
      format.html
      format.api
    end
  end

  def new
    @document = @project.documents.build
    @document.safe_attributes = params[:document]
  end

  def create
    @document = @project.documents.build
    @document.safe_attributes = params[:document]
    attachments = params[:attachments]
    attachments ||= params[:document] && params[:document][:uploads] if api_request?
    @document.save_attachments(attachments)
    if @document.save
      respond_to do |format|
        format.html do
          render_attachment_warning_if_needed(@document)
          flash[:notice] = l(:notice_successful_create)
          redirect_to project_documents_path(@project)
        end
        format.api do
          @attachments = @document.attachments.to_a
          render :action => 'show', :status => :created, :location => document_url(@document)
        end
      end
    else
      respond_to do |format|
        format.html {render :action => 'new'}
        format.api  {render_validation_errors(@document)}
      end
    end
  end

  def edit
  end

  def update
    @document.safe_attributes = params[:document]
    if api_request?
      @document.save_attachments(params[:attachments] || (params[:document] && params[:document][:uploads]))
    end
    if @document.save
      respond_to do |format|
        format.html do
          flash[:notice] = l(:notice_successful_update)
          redirect_to document_path(@document)
        end
        format.api  {render_api_ok}
      end
    else
      respond_to do |format|
        format.html {render :action => 'edit'}
        format.api  {render_validation_errors(@document)}
      end
    end
  end

  def destroy
    @document.destroy if request.delete?
    respond_to do |format|
      format.html do
        flash[:notice] = l(:notice_successful_delete)
        redirect_to project_documents_path(@project)
      end
      format.api  {render_api_ok}
    end
  end

  def add_attachment
    attachments = Attachment.attach_files(@document, params[:attachments])
    render_attachment_warning_if_needed(@document)

    if attachments.present? && attachments[:files].present? && Setting.notified_events.include?('document_added')
      Mailer.deliver_attachments_added(attachments[:files])
    end
    redirect_to document_path(@document)
  end
end