class MessageController < ApplicationController
  layout 'site'

  before_filter :authorize_web
  before_filter :set_locale
  before_filter :require_user
  before_filter :lookup_this_user, :only => [:new]
  before_filter :check_database_readable
  before_filter :check_database_writable, :only => [:new, :reply, :mark]

  # Allow the user to write a new message to another user. This action also
  # deals with the sending of that message to the other user when the user
  # clicks send.
  # The display_name param is the display name of the user that the message is being sent to.
  def new
    if params[:message]
      if @user.sent_messages.where("sent_on >= ?", Time.now.getutc - 1.hour).count >= MAX_MESSAGES_PER_HOUR
        flash[:error] = t 'message.new.limit_exceeded'
      else
        @message = Message.new(params[:message])
        @message.to_user_id = @this_user.id
        @message.from_user_id = @user.id
        @message.sent_on = Time.now.getutc

        if @message.save
          flash[:notice] = t 'message.new.message_sent'
          Notifier.message_notification(@message).deliver
          redirect_to :controller => 'message', :action => 'inbox', :display_name => @user.display_name
        end
      end
    else
      @title = t 'message.new.title'
    end
  end

  # Allow the user to reply to another message.
  def reply
    message = Message.find(params[:message_id])

    if message.to_user_id == @user.id then
      message.update_attribute(:message_read, true)

      @body = "On #{message.sent_on} #{message.sender.display_name} wrote:\n\n#{message.body.gsub(/^/, '> ')}"
      @title = @subject = "Re: #{message.title.sub(/^Re:\s*/, '')}"
      @this_user = User.find(message.from_user_id)

      render :action => 'new'
    else
      flash[:notice] = t 'message.reply.wrong_user', :user => @user.display_name
      redirect_to :controller => "user", :action => "login", :referer => request.fullpath
    end
  rescue ActiveRecord::RecordNotFound
    @title = t'message.no_such_message.title'
    render :action => 'no_such_message', :status => :not_found
  end

  # Show a message
  def read
    @title = t 'message.read.title'
    @message = Message.find(params[:message_id])

    if @message.to_user_id == @user.id or @message.from_user_id == @user.id then
      @message.message_read = true if @message.to_user_id == @user.id
      @message.save
    else
      flash[:notice] = t 'message.read.wrong_user', :user => @user.display_name
      redirect_to :controller => "user", :action => "login", :referer => request.fullpath
    end
  rescue ActiveRecord::RecordNotFound
    @title = t'message.no_such_message.title'
    render :action => 'no_such_message', :status => :not_found
  end

  # Display the list of messages that have been sent to the user.
  def inbox
    @title = t 'message.inbox.title'
    if @user and params[:display_name] == @user.display_name
    else
      redirect_to :controller => 'message', :action => 'inbox', :display_name => @user.display_name
    end
  end

  # Display the list of messages that the user has sent to other users.
  def outbox
    @title = t 'message.outbox.title'
    if @user and params[:display_name] == @user.display_name
    else
      redirect_to :controller => 'message', :action => 'outbox', :display_name => @user.display_name
    end
  end

  # Set the message as being read or unread.
  def mark
    @message = Message.where("to_user_id = ? OR from_user_id = ?", @user.id, @user.id).find(params[:message_id])
    if params[:mark] == 'unread'
      message_read = false
      notice = t 'message.mark.as_unread'
    else
      message_read = true
      notice = t 'message.mark.as_read'
    end
    @message.message_read = message_read
    if @message.save
      if not request.xhr?
        flash[:notice] = notice
        redirect_to :controller => 'message', :action => 'inbox', :display_name => @user.display_name
      end
    end
  rescue ActiveRecord::RecordNotFound
    @title = t'message.no_such_message.title'
    render :action => 'no_such_message', :status => :not_found
  end

  # Delete the message.
  def delete
    message = Message.where("to_user_id = ? OR from_user_id = ?", @user.id, @user.id).find(params[:message_id])
    message.from_user_visible = false if message.sender == @user
    message.to_user_visible = false if message.recipient == @user
    if message.save
      flash[:notice] = t 'message.delete.deleted'

      if params[:referer]
        redirect_to params[:referer]
      else
        redirect_to :controller => 'message', :action => 'inbox', :display_name => @user.display_name
      end
    end
  rescue ActiveRecord::RecordNotFound
    @title = t'message.no_such_message.title'
    render :action => 'no_such_message', :status => :not_found
  end
end
