class UserController < ApplicationController
  before_filter :authorize
  
  def auth
    @res = {status: 'hello', newbie: false}
    user = User.find_by_vkid(params[:mid])
    if user.nil?
      user = User.new(vkid: params[:mid], lang: 'ru').save
      @res[:newbie] = true
    end
    
    session = Session.find_or_create_by_user_id(user.id)
    if session.key != session_key
      session.key = session_key
      session.save
      @res[:ok_reload] = true
      return render json: @res
    end
    
    @res[:user] = build_user_info(user)
    
    render json: @res
  end
  
  def settings
    @user = User.find_by_vkid(params[:mid])
    render partial: 'settings'
  end
  
  def update
    allowed_params = [:name, :email, :lang, :show]
    
    user = User.find_by_vkid(params[:mid])
    unless params[:params].nil?
      update_params = {}
      params[:params] = params[:params].each{ |k, v| update_params[k.to_sym] = v }
      if (update_params.keys - allowed_params).empty?
        if update_params.include? :show
          update_params[:show] = update_params[:show].map{ |k, v| k.to_sym }
        end
        params[:params].each do |k, v|
          user[k] = v
        end
        user.save
      end
    end
    
    render json: {user: build_user_info(user)}
  end
  
  def fav
    @res = {status: 'fail'}
    
    fav = Favorite.new
    if not params[:artist].nil?
      artist = Artist.find(params[:artist]);
      unless artist.nil?
        fav.artist_id = artist.id
        res[:status] = 'added'
      end
    elsif not params[:album].nil?
      album = Album.find(params[:album]);
      unless album.nil?
        fav.album_id = album.id
        res[:status] = 'added'
      end
    elsif not params[:track].nil?
      track = Track.find(params[:track]);
      unless track.nil?
        fav.track_id = track.id
        res[:status] = 'added'
      end
    end
    
    render json: @res
  end
  
private

  def build_user_info user
    {
      id: user.id,
      name: user.name,
      email: user.email,
      vkid: user.vkid,
      lang: user.lang,
      lastfm_username: user.lastfm_username,
      lastfm_login_url: ('http://www.last.fm/api/auth?api_key=' << LastFM.api_key <<
        '&cb=http://' << request.host << ':' << request.port.to_s << '/lastfm/connect/?sid=' <<
        user.session.key if user.lastfm_username.nil?)
    }
  end
end