# -*- encoding : utf-8 -*-
# This file is part of Wiki UFC.
# Copyright (C) 2007-2015 by Álinson Xavier <isoron@gmail.com>
# Copyright (C) 2007-2008 by Adriano Freitas <adrianoblue@gmail.com>
# Copyright (C) 2007-2008 by André Castro <aisushin@gmail.com>
# Copyright (C) 2007-2008 by Rafael Barbosa <86.rafael@gmail.com>
# Copyright (C) 2007-2008 by Henrique Bustamante <bustamante.rique@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

class AttachmentsController < ApplicationController
  before_filter :find_attachment
  
  def show
    respond_to do |format|
      format.html
      format.xml { render xml: @attachment }
    end
  end

  def new
  end

  def create
    @attachment.course_id = @course.id
    @attachment.path = params[:attachment][:path]
    @attachment.front_page = params[:attachment][:front_page]
    @attachment.description = params[:attachment][:description]
    @attachment.file_name = "blank"
    unless params[:attachment][:file].nil?
      @attachment.file = params[:attachment][:file]
      @attachment.file_name = params[:attachment][:file].original_filename
      @attachment.content_type = params[:attachment][:file].content_type
    end
    @attachment.save!

    AttachmentCreateLogEntry.create!(target_id: @attachment.id, user: @current_user, course: @course)
    flash[:notice] = t(:attachment_created)

    respond_to do |format|
      format.html { redirect_to course_attachment_url(@course, @attachment) }
      format.xml { head :created, location: course_attachment_url(@course, @attachment, format: :xml) }
    end
  end

  def edit
  end

  def update
    @attachment.path = params[:attachment][:path]
    @attachment.front_page = params[:attachment][:front_page]
    @attachment.description = params[:attachment][:description]
    unless params[:attachment][:file].nil?
      @attachment.file = params[:attachment][:file]
      @attachment.file_name = params[:attachment][:file].original_filename
      @attachment.content_type = params[:attachment][:file].content_type
    end
    changed = @attachment.changed?

    if changed
      @attachment.last_modified = Time.now.utc
      @attachment.save!
      AttachmentEditLogEntry.create!(target_id: @attachment.id, user: @current_user, course: @course)
      flash[:notice] = t(:attachment_updated)
    end

    respond_to do |format|
      format.html { redirect_to course_attachment_url(@course, @attachment) }
      format.xml { head :created, location: course_attachment_url(@course, @attachment, format: :xml) }
    end
  end

  def destroy
    @attachment.destroy
    flash[:notice] = t(:attachment_removed)

    log = AttachmentDeleteLogEntry.create!(target_id: @attachment.id, user: @current_user, course: @course)
    flash[:undo] = undo_course_log_url(@course, log)

    respond_to do |format|
      format.html { redirect_to course_url(@course) }
      format.xml { head :ok }
    end
  end

  def download
    send_file("#{Rails.root}/public/upload/#{@course.id}/#{@attachment.id}",
              filename: @attachment.file_name,
              type: @attachment.content_type,
              disposition: 'inline',
              streaming: 'true')
  end

  protected

  def find_attachment
    params[:course_id] = Course.find(:first, conditions: ['short_name = ?', params[:course_id]], order: 'period desc').id if !params[:course_id].is_numeric? && !Course.find_by_short_name(params[:course_id]).nil?
    @course = Course.find(params[:course_id])
    @attachment = params[:id] ? @course.attachments.find(params[:id]) : Attachment.new
  end
end