# Copyright (C) 2012-2014 Zammad Foundation, http://zammad-foundation.org/

class TicketArticlesController < ApplicationController
  before_filter :authentication_check

  # GET /articles
  def index
    @articles = Ticket::Article.all

    render :json => @articles
  end

  # GET /articles/1
  def show
    @article = Ticket::Article.find( params[:id] )

    render :json => @article
  end

  # POST /articles
  def create
    form_id  = params[:ticket_article][:form_id]
    params[:ticket_article].delete(:form_id)
    @article = Ticket::Article.new( Ticket::Article.param_validation( params[:ticket_article] ) )

    # find attachments in upload cache
    if form_id
      @article.attachments = Store.list(
        :object => 'UploadCache',
        :o_id   => form_id,
      )
    end

    if @article.save

      # remove attachments from upload cache
      Store.remove(
        :object => 'UploadCache',
        :o_id   => form_id,
      )

      render :json => @article, :status => :created
    else
      render :json => @article.errors, :status => :unprocessable_entity
    end
  end

  # PUT /articles/1
  def update
    @article = Ticket::Article.find( params[:id] )

    if @article.update_attributes( Ticket::Article.param_validation( params[:ticket_article] ) )
      render :json => @article, :status => :ok
    else
      render :json => @article.errors, :status => :unprocessable_entity
    end
  end

  # DELETE /articles/1
  def destroy
    @article = Ticket::Article.find( params[:id] )
    @article.destroy

    head :ok
  end

  # DELETE /ticket_attachment_upload
  def ticket_attachment_upload_delete
    Store.remove_item( params[:store_id] )

    # return result
    render :json => {
      :success  => true,
    }
  end

  # POST /ticket_attachment_upload
  def ticket_attachment_upload_add

    # store file
    file = params[:File]
    content_type = file.content_type
    if !content_type || content_type == 'application/octet-stream'
      if MIME::Types.type_for(file.original_filename).first
        content_type = MIME::Types.type_for(file.original_filename).first.content_type
      else
        content_type = 'application/octet-stream'
      end
    end
    headers_store = {
      'Content-Type' => content_type
    }
    store = Store.add(
      :object      => 'UploadCache',
      :o_id        => params[:form_id],
      :data        => file.read,
      :filename    => file.original_filename,
      :preferences => headers_store
    )

    # return result
    render :json => {
      :success  => true,
      :data     => {
        :store_id => store.id,
        :filename => file.original_filename,
        :size     => store.size,
      }
    }
  end

  # GET /ticket_attachment/1
  def attachment

    # permissin check
    ticket = Ticket.find( params[:ticket_id] )
    if !ticket_permission(ticket)
      render( :json => 'No such ticket.', :status => :unauthorized )
      return
    end
    article = Ticket::Article.find( params[:article_id] )
    if ticket.id != article.ticket_id
      render( :json => 'No access, article_id/ticket_id is not matching.', :status => :unauthorized )
      return
    end

    list = article.attachments || []
    access = false
    list.each {|item|
      if item.id.to_i == params[:id].to_i
        access = true
      end
    }
    if !access
      render( :json => 'Requested file id is not linked with article_id.', :status => :unauthorized )
      return
    end

    # find file
    file = Store.find(params[:id])
    send_data(
      file.content,
      :filename    => file.filename,
      :type        => file.preferences['Content-Type'] || file.preferences['Mime-Type'],
      :disposition => 'inline'
    )
  end

  # GET /ticket_article_plain/1
  def article_plain

    # permissin check
    article = Ticket::Article.find( params[:id] )
    return if !ticket_permission( article.ticket )

    list = Store.list(
      :object => 'Ticket::Article::Mail',
      :o_id   => params[:id],
    )

    # find file
    if list
      file = Store.find(list.first)
      send_data(
        file.content,
        :filename    => file.filename,
        :type        => 'message/rfc822',
        :disposition => 'inline'
      )
    end
  end

end