class ApiUsersController < ApiController

  before_filter :api_signed_in_user, :except => [:create, :signup_confirm, :auth_session_create]

  respond_to :json

  def index
    # don't return users that aren't yet confirmed
    @users = User.where('email_confirmed=TRUE').paginate(page: params[:page])
    respond_with @users, responder: ApiResponder, :status => 200
  end

  def show
    # don't return users that aren't yet confirmed
    @user = User.where('email_confirmed=TRUE').find(params[:id])
    respond_with @user, responder: ApiResponder, :status => 200
  end

  # this API call is disabled by virtue of it being commented out in routes.rb
  # the reason is that it has no captcha, and is therefore a bit abuseable
  # if someone wants to use it, please add in captcha or some other bot-protector
  def create
    # sends email to email account for confirmation
    @user = UserManager.new.signup(params[:first_name],
                                params[:last_name],
                                params[:email],
                                params[:password],
                                params[:password_confirmation],
                                params[:city],
                                params[:state],
                                params[:country],
                                params[:instruments],
                                params[:photo_url],
                                ApplicationHelper.base_uri(request) + "/confirm")

    # check for errors
    unless @user.errors.any?
      render :json => {}, :status => :ok # an empty response, but 200 OK
    else
      response.status = :unprocessable_entity
      respond_with @user, responder: ApiResponder
    end
  end

  def signup_confirm
    @user = UserManager.new.signup_confirm(params[:signup_token])

    unless @user.errors.any?
      respond_with @user, responder: ApiResponder, :location => api_user_detail_url(@user)
    else
      response.status = :unprocessable_entity
      respond_with @user, responder: ApiResponder
    end
  end

  def update
    auth_user(params[:id])
    @user = User.save(params[:id],
                      current_user.id,
                      params[:first_name],
                      params[:last_name],
                      params[:email],
                      params[:password],
                      params[:password_confirmation],
                      params[:musician],
                      params[:gender],
                      params[:birth_date],
                      params[:internet_service_provider],
                      params[:city],
                      params[:state],
                      params[:country],
                      params[:instruments],
                      params[:photo_url])

    respond_with @user, responder: ApiResponder, :status => 200
  end

  def delete
    @user = User.find(params[:id])
  auth_user  @user.destroy # required to make 'tire' integration work
    respond_with responder: ApiResponder, :status => 204
  end

  ###################### FOLLOWERS ########################
  def follower_index
    # NOTE: follower_index.rabl template references the followers property
    @user = User.find(params[:id])
  end

  ###################### FOLLOWINGS #######################
  def following_index
    @user = User.find(params[:id])
  end

  def band_following_index
    @user = User.find(params[:id])
  end

  def following_create
    id = params[:id]
    auth_user(id)
    @user = User.find(id)
    if !params[:user_id].nil?
      User.create_user_following(params[:user_id], id)
      respond_with @user, responder: ApiResponder, :location => api_user_following_index_url(@user)

    elsif !params[:band_id].nil?
      User.create_band_following(params[:band_id], id)
      respond_with @user, responder: ApiResponder, :location => api_band_following_index_url(@user)
    end
  end

  def following_destroy
    auth_user(params[:id])
    User.delete_user_following(params[:user_id], params[:id])
    respond_with responder: ApiResponder, :status => 204
  end

  ###################### RECORDINGS #######################
  def recording_index

    hide_private = false

    # hide private recordings from anyone but the current user
    if current_user.id != params[:id]
      hide_private = true
    end

    select_list = "recordings.id, recordings.description, recordings.public, genres.id, genres.description"

    if hide_private
      @recordings = Recording.joins(:musician_recordings)
                             .where(:musicians_recordings => {:user_id => "#{params[:id]}"}, :public => true)

    else
      @recordings = Recording.joins(:musician_recordings)
                             .where(:musicians_recordings => {:user_id => "#{params[:id]}"})                                  
    end

    respond_with @recordings, responder: ApiResponder, :status => 200
  end

  def recording_show
    hide_private = false

    # hide private recordings from anyone but the current user
    if current_user.id != params[:id]
      hide_private = true
    end

    @recording = Recording.find(params[:recording_id])
    if !@recording.public && hide_private
      render :json => { :message => "You are not allowed to access this recording." }, :status => 403
      #respond_with "You are not allowed to access this recording.", responder: ApiResponder, :status => 403
    else
      respond_with @recording, responder: ApiResponder, :status => 200
    end
  end

  def recording_create
    @recording = Recording.save(params[:recording_id],
                                params[:public],
                                params[:description],
                                params[:genres],
                                current_user.id,
                                params[:id],
                                false)

    @user = current_user
    respond_with @recording, responder: ApiResponder, :status => 201, :location => api_recording_detail_url(@user, @recording)
  end

  def recording_update
    @recording = Recording.save(params[:recording_id],
                                params[:public],
                                params[:description],
                                params[:genres],
                                current_user.id,
                                params[:id],
                                false)

    respond_with @recording, responder: ApiResponder, :status => 200
  end

  def recording_destroy
    auth_user(params[:id])
    @recording = Recording.find(params[:recording_id])
    @recording.delete
    respond_with responder: ApiResponder, :status => 204
  end

  ###################### FAVORITES ########################
  def favorite_index
    @user = User.find(params[:id])

    # TODO: get band followings and merge (@user.band_followings)
  end

  def favorite_create
    auth_user(params[:id])
    @favorite = UserFavorite.new()
    User.create_favorite(params[:id], params[:recording_id])

    @user = User.find(params[:id])
    respond_with @user, responder: ApiResponder, :location => api_favorite_index_url(@user)
  end

  def favorite_destroy
    auth_user(params[:id])
    User.delete_favorite(params[:id], params[:recording_id])
    respond_with responder: ApiResponder, :status => 204
  end

  ###################### FRIENDS (TODO: refactor resource paths) ##########################
  def friend_request_index
    auth_user(params[:id])
    # get all outgoing and incoming friend requests
    @friend_requests = FriendRequest.where("(friend_id='#{params[:id]}' OR user_id='#{params[:id]}') AND accepted is null")
  end

  def friend_request_show
    auth_user(params[:id])
    @friend_request = FriendRequest.find(params[:id])
  end

  def friend_request_create
    auth_user(params[:user_id])
    @friend_request = FriendRequest.new()
    @friend_request.user_id = params[:user_id]
    @friend_request.friend_id = params[:friend_id]
    @friend_request.save
    respond_with @friend_request, responder: ApiResponder, :location => api_friend_request_detail_url(@friend_request)
  end

  def friend_request_update
    ActiveRecord::Base.transaction do
      @friend_request = FriendRequest.find(params[:id])
      @friend_request.accepted = params[:accepted]
      @friend_request.save

      # create both records for this friendship
      if @friend_request.accepted?     
        @friendship = Friendship.new()
        @friendship.user_id = @friend_request.user_id
        @friendship.friend_id = @friend_request.friend_id
        @friendship.save

        @friendship = Friendship.new()
        @friendship.user_id = @friend_request.friend_id
        @friendship.friend_id = @friend_request.user_id
        @friendship.save
      end
    end

    respond_with @friend_request, responder: ApiResponder
  end

  def friend_index
    # NOTE: friend_index.rabl template references the friends property
    @user = User.find(params[:id])
  end

  def friend_destroy
    auth_user(params[:id])
    # clean up both records representing this "friendship"
    JamRuby::Friendship.delete_all "(user_id = '#{params[:id]}' AND friend_id = '#{params[:friend_id]}') OR (user_id = '#{params[:friend_id]}' AND friend_id = '#{params[:id]}')"
    respond_with responder: ApiResponder, :status => 204
  end

  ##################### BAND INVITATIONS ##################
  def band_invitation_index
    auth_user(params[:id])
    @user = current_user
    @invitations = @user.received_band_invitations#.merge(@user.sent_band_invitations)
    respond_with @invitations, responder: ApiResponder, :status => 200
  end

  def band_invitation_show
    auth_user(params[:id])

    begin
      @invitation = BandInvitation.find(params[:invitation_id])
      respond_with @invitation, responder: ApiResponder, :status => 200

    rescue ActiveRecord::RecordNotFound
      render :json => { :message => ValidationMessages::BAND_INVITATION_NOT_FOUND }, :status => 404 
    end
  end

  def band_invitation_update
    auth_user(params[:id])

    begin
      @invitation = BandInvitation.save(params[:invitation_id],
                                        nil,
                                        nil,
                                        nil,
                                        params[:accepted])

      respond_with @invitation, responder: ApiResponder, :status => 200
      
    rescue ActiveRecord::RecordNotFound
      render :json => { :message => ValidationMessages::BAND_INVITATION_NOT_FOUND }, :status => 404 
    end
  end

  ###################### AUTHENTICATION ###################
  def auth_session_create
    @user = User.authenticate(params[:email], params[:password])

    if @user.nil?
      render :json => { :success => false }, :status => 404
    else
      sign_in @user
      render :json => { :success => true }, :status => 200
    end
  end

  def auth_session_delete
    sign_out
    render :json => { :success => true }, :status => 200
  end   
end