<?php
/**
 * REST API for the user.
 *
 * @package LearnPress/JWT/RESTAPI
 * @author Nhamdv <daonham95@gmail.com>
 */
class LP_Jwt_Users_V1_Controller extends LP_REST_Jwt_Controller {
	protected $namespace = 'learnpress/v1';

	protected $rest_base = 'users';

	protected $hierarchical = true;

	protected $meta;

	public function __construct() {
		$this->meta = new WP_REST_User_Meta_Fields();
	}

	public function register_routes() {
		register_rest_route(
			$this->namespace,
			'/' . $this->rest_base,
			array(
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_items' ),
					'permission_callback' => array( $this, 'get_items_permissions_check' ),
					'args'                => $this->get_collection_params(),
				),
				'schema' => array( $this, 'get_public_item_schema' ),
			)
		);

		register_rest_route(
			$this->namespace,
			'/' . $this->rest_base . '/(?P<id>[\d]+)',
			array(
				'args'   => array(
					'id' => array(
						'description' => esc_html__( 'A unique identifier for the resource.', 'learnpress' ),
						'type'        => 'integer',
					),
				),
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_item' ),
					'permission_callback' => array( $this, 'get_item_permissions_check' ),
					'args'                => array(
						'context' => $this->get_context_param(
							array(
								'default' => 'view',
							)
						),
					),
				),
				array(
					'methods'             => WP_REST_Server::EDITABLE,
					'callback'            => array( $this, 'update_item' ),
					'permission_callback' => array( $this, 'update_item_permissions_check' ),
					'args'                => $this->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
				),
				'schema' => array( $this, 'get_public_item_schema' ),
			)
		);

		register_rest_route(
			$this->namespace,
			'/' . $this->rest_base . '/reset-password',
			array(
				'methods'             => WP_REST_Server::EDITABLE,
				'callback'            => array( $this, 'reset_password' ),
				'permission_callback' => '__return_true',
				'args'                => array(
					'user_login' => array(
						'description' => esc_html__( 'User or Email login.', 'learnpress' ),
						'type'        => 'string',
						'required'    => true,
					),
				),
			)
		);

		register_rest_route(
			$this->namespace,
			'/' . $this->rest_base . '/change-password',
			array(
				'methods'             => WP_REST_Server::EDITABLE,
				'callback'            => array( $this, 'change_password' ),
				'permission_callback' => array( $this, 'update_item_password_permissions' ),
				'args'                => array(
					'old_password' => array(
						'description' => esc_html__( 'Old Password', 'learnpress' ),
						'type'        => 'string',
						'required'    => true,
					),
					'new_password' => array(
						'description' => esc_html__( 'New Password', 'learnpress' ),
						'type'        => 'string',
						'required'    => true,
					),
				),
			)
		);

		register_rest_route(
			$this->namespace,
			'/' . $this->rest_base . '/delete',
			array(
				'methods'             => WP_REST_Server::EDITABLE,
				'callback'            => array( $this, 'delete_account' ),
				'permission_callback' => array( $this, 'update_item_password_permissions' ),
				'args'                => array(
					'id'       => array(
						'description' => esc_html__( 'User ID', 'learnpress' ),
						'type'        => 'integer',
						'required'    => true,
					),
					'password' => array(
						'description' => esc_html__( 'Password', 'learnpress' ),
						'type'        => 'string',
						'required'    => true,
					),
				),
			)
		);
	}

	public function get_items_permissions_check( $request ) {
		if ( ! empty( $request['roles'] ) && ! ( in_array( 'lp_teacher', $request['roles'] ) || in_array( 'subscriber', $request['roles'] ) ) && ! current_user_can( 'list_users' ) ) {
			return new WP_Error(
				'rest_user_cannot_view',
				__( 'Sorry, you are not allowed to filter users by role.' ),
				array( 'status' => rest_authorization_required_code() )
			);
		}

		return true;
	}

	public function get_item_permissions_check( $request ) {
		$user = $this->get_user( $request['id'] );

		if ( is_wp_error( $user ) ) {
			return $user;
		}

		$types = get_post_types( array( 'show_in_rest' => true ), 'names' );

		if ( get_current_user_id() === $user->ID ) {
			return true;
		}

		if ( 'edit' === $request['context'] && ! current_user_can( 'list_users' ) ) {
			return new WP_Error(
				'rest_user_cannot_view',
				__( 'Sorry, you are not allowed to list users.' ),
				array( 'status' => rest_authorization_required_code() )
			);
		} elseif ( ! count_user_posts( $user->ID, $types ) && ! current_user_can( 'edit_user', $user->ID ) && ! current_user_can( 'list_users' ) ) {
			return new WP_Error(
				'rest_user_cannot_view',
				__( 'Sorry, you are not allowed to list users.' ),
				array( 'status' => rest_authorization_required_code() )
			);
		}

		return true;
	}

	/**
	 * Checks if a given request has access to update a user.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return true|WP_Error True if the request has access to update the item, WP_Error object otherwise.
	 */
	public function update_item_permissions_check( $request ) {
		$user = $this->get_user( $request['id'] );
		if ( is_wp_error( $user ) ) {
			return $user;
		}

		if ( ! empty( $request['roles'] ) ) {
			if ( ! current_user_can( 'promote_user', $user->ID ) ) {
				return new WP_Error(
					'rest_cannot_edit_roles',
					__( 'Sorry, you are not allowed to edit roles of this user.' ),
					array( 'status' => rest_authorization_required_code() )
				);
			}

			$request_params = array_keys( $request->get_params() );
			sort( $request_params );
			// If only 'id' and 'roles' are specified (we are only trying to
			// edit roles), then only the 'promote_user' cap is required.
			if ( array( 'id', 'roles' ) === $request_params ) {
				return true;
			}
		}

		if ( ! current_user_can( 'edit_user', $user->ID ) ) {
			return new WP_Error(
				'rest_cannot_edit',
				__( 'Sorry, you are not allowed to edit this user.' ),
				array( 'status' => rest_authorization_required_code() )
			);
		}

		return true;
	}

	public function update_item_password_permissions( $request ) {
		$user = wp_get_current_user();

		if ( ! $user ) {
			return new WP_Error(
				'rest_cannot_update',
				__( 'Sorry, you are not allowed to update this user.' ),
				array( 'status' => rest_authorization_required_code() )
			);
		}

		if ( ! current_user_can( 'edit_user', $user->ID ) ) {
			return new WP_Error(
				'rest_cannot_edit',
				__( 'Sorry, you are not allowed to edit this user.' ),
				array( 'status' => rest_authorization_required_code() )
			);
		}

		return true;
	}

	/**
	 * Determines if the current user is allowed to make the desired roles change.
	 *
	 * @since 4.7.0
	 *
	 * @param int   $user_id User ID.
	 * @param array $roles   New user roles.
	 * @return true|WP_Error True if the current user is allowed to make the role change,
	 *                       otherwise a WP_Error object.
	 */
	protected function check_role_update( $user_id, $roles ) {
		global $wp_roles;

		foreach ( $roles as $role ) {

			if ( ! isset( $wp_roles->role_objects[ $role ] ) ) {
				return new WP_Error(
					'rest_user_invalid_role',
					/* translators: %s: Role key. */
					sprintf( __( 'The role %s does not exist.' ), $role ),
					array( 'status' => 400 )
				);
			}

			$potential_role = $wp_roles->role_objects[ $role ];

			/*
			 * Don't let anyone with 'edit_users' (admins) edit their own role to something without it.
			 * Multisite super admins can freely edit their blog roles -- they possess all caps.
			 */
			if ( ! ( is_multisite()
				&& current_user_can( 'manage_sites' ) )
				&& get_current_user_id() === $user_id
				&& ! $potential_role->has_cap( 'edit_users' )
			) {
				return new WP_Error(
					'rest_user_invalid_role',
					__( 'Sorry, you are not allowed to give users that role.' ),
					array( 'status' => rest_authorization_required_code() )
				);
			}

			// Include user admin functions to get access to get_editable_roles().
			require_once ABSPATH . 'wp-admin/includes/user.php';

			// The new role must be editable by the logged-in user.
			$editable_roles = get_editable_roles();

			if ( empty( $editable_roles[ $role ] ) ) {
				return new WP_Error(
					'rest_user_invalid_role',
					__( 'Sorry, you are not allowed to give users that role.' ),
					array( 'status' => 403 )
				);
			}
		}

		return true;
	}

	public function reset_password( $request ) {
		$user_login = $request['user_login'];
		$reset      = LP_Forms_Handler::retrieve_password( $user_login );

		if ( is_wp_error( $reset ) ) {
			return $reset;
		} else {
			return rest_ensure_response(
				array(
					'code'    => 'success',
					'message' => esc_html__( 'A link to reset your password has been emailed to you.', 'learnpress' ),
				)
			);
		}
	}

	public function delete_account( $request ) {
		$user_id  = $request['id'];
		$password = $request['password'];

		$user = wp_get_current_user();

		if ( ! $user || $user_id !== $user->ID ) {
			return new WP_Error(
				'rest_user_invalid_id',
				__( 'Invalid user ID.', 'learnpress' ),
				array( 'status' => 400 )
			);
		}

		if ( ! wp_check_password( $password, $user->data->user_pass, $user->ID ) ) {
			return new WP_Error(
				'rest_user_invalid_password',
				__( 'Invalid password.', 'learnpress' ),
				array( 'status' => 400 )
			);
		}

		if ( ! function_exists( 'wp_delete_user' ) ) {
			require_once ABSPATH . 'wp-admin/includes/user.php';
		}

		$delete = wp_delete_user( $user_id );

		if ( is_wp_error( $delete ) ) {
			return $delete;
		} else {
			return rest_ensure_response(
				array(
					'code'    => 'success',
					'message' => esc_html__( 'Your account has been deleted.', 'learnpress' ),
				)
			);
		}
	}

	public function change_password( $request ) {
		$old_password = $request['old_password'];
		$new_password = $request['new_password'];

		$user = wp_get_current_user();

		if ( ! $user || ! $user->ID || ( empty( $old_password ) || empty( $new_password ) ) ) {
			return new WP_Error(
				'rest_user_cannot_change_password',
				__( 'Sorry, you are not allowed to change password.' ),
				array( 'status' => rest_authorization_required_code() )
			);
		}

		if ( ! wp_check_password( $old_password, $user->user_pass, $user->ID ) ) {
			return new WP_Error(
				'rest_user_incorrect_password',
				__( 'Your current password is incorrect.' ),
				array( 'status' => 403 )
			);
		}

		if ( apply_filters( 'learnpress_rest_api_user_change_password', true, $user ) ) {
			wp_set_password( $new_password, $user->ID );
		} else {
			return new WP_Error(
				'rest_user_cannot_change_password',
				__( 'Sorry, you are not allowed to change password.' ),
				array( 'status' => rest_authorization_required_code() )
			);
		}

		return rest_ensure_response(
			array(
				'code'    => 'success',
				'message' => esc_html__( 'Your password has been updated. Please log in again to continue!', 'learnpress' ),
			)
		);
	}

	protected function get_user( $id ) {
		$error = new WP_Error(
			'rest_user_invalid_id',
			__( 'Invalid user ID.' ),
			array( 'status' => 404 )
		);

		if ( (int) $id <= 0 ) {
			return $error;
		}

		$user = get_userdata( (int) $id );
		if ( empty( $user ) || ! $user->exists() ) {
			return $error;
		}

		if ( is_multisite() && ! is_user_member_of_blog( $user->ID ) ) {
			return $error;
		}

		return $user;
	}

	/**
	 * Updates a single user.
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
	 */
	public function update_item( $request ) {
		$user = $this->get_user( $request['id'] );
		if ( is_wp_error( $user ) ) {
			return $user;
		}

		$id = $user->ID;

		if ( ! $user ) {
			return new WP_Error(
				'rest_user_invalid_id',
				__( 'Invalid user ID.' ),
				array( 'status' => 404 )
			);
		}

		$owner_id = email_exists( $request['email'] );

		if ( $owner_id && $owner_id !== $id ) {
			return new WP_Error(
				'rest_user_invalid_email',
				__( 'Invalid email address.' ),
				array( 'status' => 400 )
			);
		}

		if ( ! empty( $request['username'] ) && $request['username'] !== $user->user_login ) {
			return new WP_Error(
				'rest_user_invalid_argument',
				__( "Username isn't editable." ),
				array( 'status' => 400 )
			);
		}

		if ( ! empty( $request['slug'] ) && $request['slug'] !== $user->user_nicename && get_user_by( 'slug', $request['slug'] ) ) {
			return new WP_Error(
				'rest_user_invalid_slug',
				__( 'Invalid slug.' ),
				array( 'status' => 400 )
			);
		}

		if ( ! empty( $request['roles'] ) ) {
			$check_permission = $this->check_role_update( $id, $request['roles'] );

			if ( is_wp_error( $check_permission ) ) {
				return $check_permission;
			}
		}

		$user = $this->prepare_item_for_database( $request );

		// Ensure we're operating on the same user we already checked.
		$user->ID = $id;

		$user_id = wp_update_user( wp_slash( (array) $user ) );

		if ( is_wp_error( $user_id ) ) {
			return $user_id;
		}

		$files = $request->get_file_params();

		if ( ! empty( $files['lp_avatar_file'] ) ) {
			$file = $files['lp_avatar_file'];

			if ( ! empty( $file['name'] ) ) {
				list($width, $height) = getimagesize( $file['tmp_name'] );

				$upload_size = learn_press_get_avatar_thumb_size();

				if ( $width != $upload_size['width'] || $height != $upload_size['height'] ) {
					return new WP_Error(
						'rest_user_invalid_avatar_dimensions',
						sprintf( __( 'Invalid avatar dimensions. Please upload a new avatar width size %1$1sx%2$2s' ), $upload_size['width'], $upload_size['height'] ),
						array( 'status' => 400 )
					);
				}

				$data   = LP_WP_Filesystem::instance()->file_get_contents( $file['tmp_name'] );
				$base64 = base64_encode( $data );

				$controller = new LP_REST_Profile_Controller();

				$request->set_param( 'file', $base64 );

				$uploaded_avatar = $controller->upload_avatar( $request );
			}
		}

		if ( ! empty( $request['avatar_url'] ) ) {
			$controller = new LP_REST_Profile_Controller();

			$request->set_param( 'file', $request['avatar_url'] );

			$uploaded_avatar = $controller->upload_avatar( $request );
		}

		$user = get_user_by( 'id', $user_id );

		do_action( 'lp_rest_insert_user', $user, $request, false );

		if ( ! empty( $request['roles'] ) ) {
			array_map( array( $user, 'add_role' ), $request['roles'] );
		}

		$schema = $this->get_item_schema();

		if ( ! empty( $schema['properties']['meta'] ) && isset( $request['meta'] ) ) {
			$meta_update = $this->meta->update_value( $request['meta'], $user_id );

			if ( is_wp_error( $meta_update ) ) {
				return $meta_update;
			}
		}

		$user          = get_user_by( 'id', $user_id );
		$fields_update = $this->update_additional_fields_for_object( $user, $request );

		if ( is_wp_error( $fields_update ) ) {
			return $fields_update;
		}

		$request->set_param( 'context', 'edit' );

		do_action( 'lp_rest_after_insert_user', $user, $request, false );

		$response = $this->prepare_item_for_response( $user, $request );
		$response = rest_ensure_response( $response );

		return $response;
	}

	/**
	 * Prepares a single user for creation or update.
	 *
	 * @param WP_REST_Request $request Request object.
	 * @return object User object.
	 */
	protected function prepare_item_for_database( $request ) {
		$prepared_user = new stdClass();

		$schema = $this->get_item_schema();

		// Required arguments.
		if ( isset( $request['email'] ) && ! empty( $schema['properties']['email'] ) ) {
			$prepared_user->user_email = $request['email'];
		}

		if ( isset( $request['username'] ) && ! empty( $schema['properties']['username'] ) ) {
			$prepared_user->user_login = $request['username'];
		}

		if ( isset( $request['password'] ) && ! empty( $schema['properties']['password'] ) ) {
			$prepared_user->user_pass = $request['password'];
		}

		// Optional arguments.
		if ( isset( $request['id'] ) ) {
			$prepared_user->ID = absint( $request['id'] );
		}

		if ( isset( $request['name'] ) && ! empty( $schema['properties']['name'] ) ) {
			$prepared_user->display_name = $request['name'];
		}

		if ( isset( $request['first_name'] ) && ! empty( $schema['properties']['first_name'] ) ) {
			$prepared_user->first_name = $request['first_name'];
		}

		if ( isset( $request['last_name'] ) && ! empty( $schema['properties']['last_name'] ) ) {
			$prepared_user->last_name = $request['last_name'];
		}

		if ( isset( $request['nickname'] ) && ! empty( $schema['properties']['nickname'] ) ) {
			$prepared_user->nickname = $request['nickname'];
		}

		if ( isset( $request['slug'] ) && ! empty( $schema['properties']['slug'] ) ) {
			$prepared_user->user_nicename = $request['slug'];
		}

		if ( isset( $request['description'] ) && ! empty( $schema['properties']['description'] ) ) {
			$prepared_user->description = $request['description'];
		}

		if ( isset( $request['url'] ) && ! empty( $schema['properties']['url'] ) ) {
			$prepared_user->user_url = $request['url'];
		}

		if ( isset( $request['locale'] ) && ! empty( $schema['properties']['locale'] ) ) {
			$prepared_user->locale = $request['locale'];
		}

		// Setting roles will be handled outside of this function.
		if ( isset( $request['roles'] ) ) {
			$prepared_user->role = false;
		}

		/**
		 * Filters user data before insertion via the REST API.
		 *
		 * @param object          $prepared_user User object.
		 * @param WP_REST_Request $request       Request object.
		 */
		return apply_filters( 'lp_rest_pre_insert_user', $prepared_user, $request );
	}

	public function get_overview_tab_contents( $user ) {
		$output    = array();
		$statistic = LP_Profile::instance( $user->get_id )->get_statistic_info();

		$output['statistic'] = array_map( 'absint', $statistic );

		$featured_query = new LP_Course_Query(
			array(
				'paginate' => false,
				'featured' => 'yes',
				'return'   => 'ids',
				'author'   => $user->ID,
			)
		);

		$output['featured'] = $featured_query->get_courses();

		$latest_query = new LP_Course_Query(
			array(
				'paginate' => false,
				'return'   => 'ids',
				'author'   => $user->get_id(),
				'limit'    => '-1',
			)
		);

		$output['latest'] = $latest_query->get_courses();

		return $output;
	}

	public function get_course_tab_contents( $request ) {
		$output = array(
			'enrolled' => array(),
			'created'  => array(),
		);

		$profile          = learn_press_get_profile( $request['id'] );
		$user             = learn_press_get_user( $request['id'] );
		$filters_enrolled = array(
			'all'         => 'all',
			'finished'    => 'finished',
			'passed'      => 'passed',
			'failed'      => 'failed',
			'in-progress' => 'in-progress',
		);

		if ( method_exists( $profile, 'query_courses' ) ) {
			foreach ( $filters_enrolled as $key => $filter ) {
				$query_enrolled = $profile->query_courses(
					'purchased',
					array(
						'status' => $filter,
						'limit'  => $request['per_page'] ?? '100',
						'paged'  => $request['paged'] ?? 1,
					)
				);

				if ( empty( $query_enrolled->get_items() ) ) {
					continue;
				}

				$items        = $query_enrolled->get_items();
				$enrolled_ids = array();
				foreach ( $items as $enrolled_item ) {
					$course_data = $user->get_course_data( $enrolled_item );

					if ( $course_data ) {
						$post = get_post( $enrolled_item );

						$enrolled_ids[] = array(
							'id'         => $enrolled_item ?? '',
							'title'      => $post->post_title,
							'graduation' => ! empty( $course_data->get_graduation() ) ? $course_data->get_graduation() : '',
							'status'     => ! empty( $course_data->get_status() ) ? $course_data->get_status() : '',
							'start_time' => lp_jwt_prepare_date_response( $course_data->get_start_time() ? $course_data->get_start_time()->toSql() : '' ),
							'end_time'   => lp_jwt_prepare_date_response( $course_data->get_end_time() ? $course_data->get_end_time()->toSql() : '' ),
							'expiration' => lp_jwt_prepare_date_response( $course_data->get_expiration_time() ? $course_data->get_expiration_time()->toSql() : '' ),
							'results'    => $course_data->calculate_course_results(),
						);
					}
				}

				$output['enrolled'][ $key ] = $enrolled_ids;
			}
		}

		$filters_created = array(
			'all'     => '',
			'publish' => 'publish',
			'pending' => 'pending',
		);

		if ( method_exists( $profile, 'query_courses' ) ) {
			foreach ( $filters_created as $created_key => $filter ) {
				$query_created = $profile->query_courses(
					'own',
					array(
						'status' => $filter,
						'limit'  => $request['per_page'] ?? '100',
						'paged'  => $request['paged'] ?? 1,
					)
				);

				$created_ids = array();
				if ( ! empty( $query_created->get_items() ) ) {
					foreach ( $query_created->get_items() as $created_item ) {
						$created_ids[] = $created_item;
					}
				}

				$output['created'][ $created_key ] = array_map( 'absint', $created_ids );
			}
		}

		return $output;
	}

	/**
	 * Get Profile Quiz Tab content
	 *
	 * @param [type] $request
	 * @return void
	 *
	 * @author Nhamdv <daonham@gmail.com>
	 */
	public function get_quiz_tab_contents( $request ) {
		$output = array();

		$user_profile = learn_press_get_user( $request['id'] );
		$filters      = array(
			'all'         => '',
			'finished'    => 'completed',
			'passed'      => 'passed',
			'failed'      => 'failed',
			'in-progress' => 'in-progress',
		);

		if ( method_exists( $user_profile, 'get_user_quizzes' ) ) {
			foreach ( $filters as $key => $quiz_filter ) {
				$filter             = new LP_User_Items_Filter();
				$filter->user_id    = $request['id'];
				$filter->limit      = 100;
				$filter->status     = $quiz_filter === 'complete' ? 'complete' : '';
				$filter->graduation = $quiz_filter !== 'complete' ? $quiz_filter : '';
				$query              = $user_profile->get_user_quizzes( $filter );

				$ids = array();
				if ( ! empty( $query->get_items() ) ) {
					foreach ( $query->get_items() as $item ) {
						$ids[] = array(
							'id'         => $item->get_id(),
							'result'     => $item->get_percent_result() ?? '',
							'graduation' => $item->get_graduation() ?? '',
							'start_time' => $item->get_start_time() ? lp_jwt_prepare_date_response( $item->get_start_time()->toSql( false ) ) : '',
							'end_time'   => $item->get_end_time() ? lp_jwt_prepare_date_response( $item->get_end_time()->toSql( false ) ) : '',
							'data'       => $filter !== 'in-progress' ? $item->calculate_quiz_result() : array(),
							'attempt'    => $filter !== 'in-progress' ? $item->get_attempts() : array(),
						);
					}
				}

				$output[ $key ] = $ids;
			}
		}

		return $output;
	}

	/**
	 * Get order by user id
	 *
	 * @param array $request [id: user ID]
	 * @return array
	 *
	 * @author Nhamdv <daonham95@gmail.com>
	 */
	public function get_order_content_tab( $request ) {
		$output = array();

		$profile = learn_press_get_profile( $request['id'] );

		if ( method_exists( $profile, 'query_orders' ) ) {
			$query_orders = $profile->query_orders( array( 'fields' => 'ids' ) );
			if ( ! empty( $query_orders->get_items() ) ) {
				foreach ( $query_orders->get_items() as $order_id ) {
					$order = learn_press_get_order( $order_id );

					$output[ $order_id ] = array(
						'order_key' => $order->get_order_number() ?? '',
						'total'     => $order->get_total(),
						'currency'  => $order->get_currency(),
						'status'    => $order->get_status(),
						'date'      => $order->get_order_date( 'timestamp' ) ? lp_jwt_prepare_date_response( get_date_from_gmt( gmdate( 'Y-m-d H:i:s', $order->get_order_date( 'timestamp' ) ), 'Y-m-d H:i:s' ) ) : '',
					);
				}
			}
		}

		return $output;
	}

	/**
	 * Retrieves a single user.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
	 */
	public function get_item( $request ) {
		$user = $this->get_user( $request['id'] );

		if ( is_wp_error( $user ) ) {
			return $user;
		}

		$user     = $this->prepare_item_for_response( $user, $request );
		$response = rest_ensure_response( $user );

		return $response;
	}

	/**
	 * Retrieves all users.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_REST_Request $request Full details about the request.
	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
	 */
	public function get_items( $request ) {

		// Retrieve the list of registered collection query parameters.
		$registered = $this->get_collection_params();

		/*
		 * This array defines mappings between public API query parameters whose
		 * values are accepted as-passed, and their internal WP_Query parameter
		 * name equivalents (some are the same). Only values which are also
		 * present in $registered will be set.
		 */
		$parameter_mappings = array(
			'exclude'  => 'exclude',
			'include'  => 'include',
			'order'    => 'order',
			'per_page' => 'number',
			'search'   => 'search',
			'roles'    => 'role__in',
			'slug'     => 'nicename__in',
		);

		$prepared_args = array();

		/*
		 * For each known parameter which is both registered and present in the request,
		 * set the parameter's value on the query $prepared_args.
		 */
		foreach ( $parameter_mappings as $api_param => $wp_param ) {
			if ( isset( $registered[ $api_param ], $request[ $api_param ] ) ) {
				$prepared_args[ $wp_param ] = $request[ $api_param ];
			}
		}

		if ( isset( $registered['offset'] ) && ! empty( $request['offset'] ) ) {
			$prepared_args['offset'] = $request['offset'];
		} else {
			$prepared_args['offset'] = ( $request['page'] - 1 ) * $prepared_args['number'];
		}

		if ( isset( $registered['orderby'] ) ) {
			$orderby_possibles        = array(
				'id'              => 'ID',
				'include'         => 'include',
				'name'            => 'display_name',
				'registered_date' => 'registered',
				'slug'            => 'user_nicename',
				'include_slugs'   => 'nicename__in',
				'email'           => 'user_email',
				'url'             => 'user_url',
			);
			$prepared_args['orderby'] = $orderby_possibles[ $request['orderby'] ];
		}

		if ( isset( $registered['who'] ) && ! empty( $request['who'] ) && 'authors' === $request['who'] ) {
			$prepared_args['who'] = 'authors';
		}

		if ( ! empty( $prepared_args['search'] ) ) {
			$prepared_args['search'] = '*' . $prepared_args['search'] . '*';
		}
		/**
		 * Filters WP_User_Query arguments when querying users via the REST API.
		 *
		 * @link https://developer.wordpress.org/reference/classes/wp_user_query/
		 *
		 * @since 4.7.0
		 *
		 * @param array           $prepared_args Array of arguments for WP_User_Query.
		 * @param WP_REST_Request $request       The REST API request.
		 */
		$prepared_args = apply_filters( 'rest_user_query', $prepared_args, $request );

		$query = new WP_User_Query( $prepared_args );

		$users = array();

		foreach ( $query->results as $user ) {
			$data    = $this->prepare_item_for_response( $user, $request );
			$users[] = $this->prepare_response_for_collection( $data );
		}

		$response = rest_ensure_response( $users );

		// Store pagination values for headers then unset for count query.
		$per_page = (int) $prepared_args['number'];
		$page     = ceil( ( ( (int) $prepared_args['offset'] ) / $per_page ) + 1 );

		$prepared_args['fields'] = 'ID';

		$total_users = $query->get_total();

		if ( $total_users < 1 ) {
			// Out-of-bounds, run the query again without LIMIT for total count.
			unset( $prepared_args['number'], $prepared_args['offset'] );
			$count_query = new WP_User_Query( $prepared_args );
			$total_users = $count_query->get_total();
		}

		$response->header( 'X-WP-Total', (int) $total_users );

		$max_pages = ceil( $total_users / $per_page );

		$response->header( 'X-WP-TotalPages', (int) $max_pages );

		$base = add_query_arg( urlencode_deep( $request->get_query_params() ), rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ) );
		if ( $page > 1 ) {
			$prev_page = $page - 1;

			if ( $prev_page > $max_pages ) {
				$prev_page = $max_pages;
			}

			$prev_link = add_query_arg( 'page', $prev_page, $base );
			$response->link_header( 'prev', $prev_link );
		}
		if ( $max_pages > $page ) {
			$next_page = $page + 1;
			$next_link = add_query_arg( 'page', $next_page, $base );

			$response->link_header( 'next', $next_link );
		}

		return $response;
	}

	/**
	 * Prepares a single user output for response.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_User         $user    User object.
	 * @param WP_REST_Request $request Request object.
	 * @return WP_REST_Response Response object.
	 */
	public function prepare_item_for_response( $user, $request ) {
		$context = ! empty( $request['context'] ) ? $request['context'] : 'embed';
		$data    = $this->get_users_data( $user, $context, $request );

		$data = $this->add_additional_fields_to_object( $data, $request );
		$data = $this->filter_response_by_context( $data, $context );

		// Wrap the data in a response object.
		$response = rest_ensure_response( $data );

		$response->add_links( $this->prepare_links( $user ) );

		return apply_filters( 'lp_rest_prepare_user', $response, $user, $request );
	}

	public function get_users_data( $user, $context = 'view' ) {
		$request = func_num_args() >= 2 ? func_get_arg( 2 ) : new WP_REST_Request( '', '', array( 'context' => $context ) );
		$fields  = $this->get_fields_for_response( $request );
		$data    = array();

		foreach ( $fields as $field ) {
			switch ( $field ) {
				case 'id':
					$data['id'] = $user->ID;
					break;
				case 'username':
					$data['username'] = $user->user_login;
					break;
				case 'name':
					$data['name'] = $user->display_name;
					break;
				case 'first_name':
					$data['first_name'] = $user->first_name;
					break;
				case 'last_name':
					$data['last_name'] = $user->last_name;
					break;
				case 'email':
					$data['email'] = $user->user_email;
					break;
				case 'url':
					$data['url'] = $user->user_url;
					break;
				case 'description':
					$data['description'] = $user->description;
					break;
				case 'link':
					$data['link'] = get_author_posts_url( $user->ID, $user->user_nicename );
					break;
				case 'locale':
					$data['locale'] = get_user_locale( $user );
					break;
				case 'nickname':
					$data['nickname'] = $user->nickname;
					break;
				case 'slug':
					$data['slug'] = $user->user_nicename;
					break;
				case 'roles':
					$data['roles'] = array_values( $user->roles );
					break;
				case 'registered_date':
					$data['registered_date'] = gmdate( 'c', strtotime( $user->user_registered ) );
					break;
				case 'capabilities':
					$data['capabilities'] = (object) $user->allcaps;
					break;
				case 'extra_capabilities':
					$data['extra_capabilities'] = (object) $user->caps;
					break;
				case 'avatar_url':
					$data['avatar_url'] = $this->get_profile_avatar( $user->ID );
					break;
				case 'avatar_size':
					$data['avatar_size']['width']  = learn_press_get_avatar_thumb_size()['width'];
					$data['avatar_size']['height'] = learn_press_get_avatar_thumb_size()['height'];
					break;
				case 'instructor_data':
					// $data['instructor_data'] = $this->get_instructor_data( $user->ID );
					$data['instructor_data'] = LP_Profile::instance( $user->ID )->get_statistic_info();
					break;
				case 'meta':
					$data['meta'] = $this->meta->get_value( $user->ID, $request );
					break;
				case 'tabs':
					$data['tabs'] = $this->get_lp_data_tabs( $user, $request );
					break;
				case 'custom_register':
					$data['custom_register'] = $this->custom_register( $user );
					break;
				case 'social':
					$data['social'] = $this->get_social_data( $user->ID );
					break;
			}
		}

		return $data;
	}

	public function get_social_data( $user_id ) {
		return learn_press_get_user_extra_profile_info( $user_id );
	}

	public function get_profile_avatar( $user_id ) {
		$user = learn_press_get_user( $user_id );

		$avatar = $user->get_upload_profile_src();

		return ! empty( $avatar ) ? $avatar : '';
	}

	/**
	 * @editor tungnx
	 * @deprecated 4.1.6
	 */
	/*
	public function get_instructor_data( $user_id ) {
		$profile = learn_press_get_profile( $user_id );

		$output = array();

		if ( is_wp_error( $profile ) ) {
			return $output;
		}

		$query  = $profile->query_courses( 'purchased' );
		$counts = $query['counts'];

		$output = array(
			'enrolled_courses'  => isset( $counts['all'] ) ? absint( $counts['all'] ) : 0,
			'completed_courses' => isset( $counts['finished'] ) ? absint( $counts['finished'] ) : 0,
			'courses'           => absint( count_user_posts( $user_id, LP_COURSE_CPT ) ),
			'students'          => absint( learn_press_count_instructor_users( $user_id ) ),
		);

		return $output;
	}*/

	/**
	 * Get data tabs.
	 *
	 * @param $user
	 * @param $request
	 *
	 * @return array
	 */
	public function get_lp_data_tabs( $user, $request ): array {
		$output = array();

		if ( get_current_user_id() === $user->ID || current_user_can( 'list_users' ) ) {
			if ( function_exists( 'learn_press_get_user_profile_tabs' ) ) {
				$tabs = learn_press_get_user_profile_tabs();

				$content = array(
					'overview' => $this->get_overview_tab_contents( $user ),
					'courses'  => $this->get_course_tab_contents( $request ),
					'quizzes'  => $this->get_quiz_tab_contents( $request ),
					'orders'   => $this->get_order_content_tab( $request ),
				);

				/**
				 * @var LP_Profile_Tab $tab
				 */
				foreach ( $tabs->get() as $key => $tab ) {
					$output[ $key ] = array(
						'title'    => $tab->get( 'title' ) ?? '',
						'slug'     => $tab->get( 'slug' ) ?? '',
						'priority' => $tab->get( 'priority' ) ?? '',
						'icon'     => $tab->get( 'icon' ) ?? '',
						'content'  => $content[ $key ] ?? '',
					);

					if ( ! empty( $tab->get( 'sections' ) ) ) {
						foreach ( $tab->get( 'sections' ) as $section_key => $section ) {
							$output[ $key ]['section'][ $section_key ] = array(
								'title'    => $section['title'] ?? '',
								'slug'     => $section['slug'] ?? '',
								'priority' => $section['priority'] ?? '',
							);
						}
					}
				}
			}
		}

		return $output;
	}

	/**
	 * Display register cutom form in LearnPress Setting
	 *
	 * @param object $user
	 * @return array
	 */
	public function custom_register( $user ) {
		$output = array();

		if ( function_exists( 'lp_get_user_custom_register_fields' ) ) {
			$custom_fields  = LP_Settings::instance()->get( 'register_profile_fields' );
			$custom_profile = lp_get_user_custom_register_fields( $user->ID );

			if ( $custom_fields ) {
				foreach ( $custom_fields as $field ) {
					$value            = $field['id'];
					$output[ $value ] = array(
						'title'    => $field['name'] ?? '',
						'type'     => $field['type'] ?? '',
						'required' => $field['required'] ?? 'no',
						'value'    => $custom_profile[ $value ] ?? '',
					);
				}
			}
		}

		return $output;
	}

	/**
	 * Prepares links for the user request.
	 *
	 * @since 4.7.0
	 *
	 * @param WP_User $user User object.
	 * @return array Links for the given user.
	 */
	protected function prepare_links( $user ) {
		$links = array(
			'self'       => array(
				'href' => rest_url( sprintf( '%s/%s/%d', $this->namespace, $this->rest_base, $user->ID ) ),
			),
			'collection' => array(
				'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ),
			),
		);

		return $links;
	}

	public function check_username( $value, $request, $param ) {
		$username = (string) $value;

		if ( ! validate_username( $username ) ) {
			return new WP_Error(
				'rest_user_invalid_username',
				__( 'This username is invalid because it uses illegal characters. Please enter a valid username.' ),
				array( 'status' => 400 )
			);
		}

		/** This filter is documented in wp-includes/user.php */
		$illegal_logins = (array) apply_filters( 'illegal_user_logins', array() );

		if ( in_array( strtolower( $username ), array_map( 'strtolower', $illegal_logins ), true ) ) {
			return new WP_Error(
				'rest_user_invalid_username',
				__( 'Sorry, that username is not allowed.' ),
				array( 'status' => 400 )
			);
		}

		return $username;
	}

	/**
	 * Check a user password for the REST API.
	 *
	 * Performs a couple of checks like edit_user() in wp-admin/includes/user.php.
	 *
	 * @since 4.7.0
	 *
	 * @param string          $value   The password submitted in the request.
	 * @param WP_REST_Request $request Full details about the request.
	 * @param string          $param   The parameter name.
	 * @return string|WP_Error The sanitized password, if valid, otherwise an error.
	 */
	public function check_user_password( $value, $request, $param ) {
		$password = (string) $value;

		if ( empty( $password ) ) {
			return new WP_Error(
				'rest_user_invalid_password',
				__( 'Passwords cannot be empty.' ),
				array( 'status' => 400 )
			);
		}

		if ( false !== strpos( $password, '\\' ) ) {
			return new WP_Error(
				'rest_user_invalid_password',
				sprintf(
					/* translators: %s: The '\' character. */
					__( 'Passwords cannot contain the "%s" character.' ),
					'\\'
				),
				array( 'status' => 400 )
			);
		}

		return $password;
	}

	public function get_item_schema() {
		$schema = array(
			'$schema'    => 'http://json-schema.org/draft-04/schema#',
			'title'      => 'user',
			'type'       => 'object',
			'properties' => array(
				'id'                 => array(
					'description' => __( 'Unique identifier for the user.' ),
					'type'        => 'integer',
					'context'     => array( 'embed', 'view', 'edit' ),
					'readonly'    => true,
				),
				'username'           => array(
					'description' => __( 'Login name for the user.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit' ),
					'required'    => true,
					'arg_options' => array(
						'sanitize_callback' => array( $this, 'check_username' ),
					),
				),
				'name'               => array(
					'description' => __( 'Display name for the user.' ),
					'type'        => 'string',
					'context'     => array( 'embed', 'view', 'edit' ),
					'arg_options' => array(
						'sanitize_callback' => 'sanitize_text_field',
					),
				),
				'first_name'         => array(
					'description' => __( 'First name for the user.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit' ),
					'arg_options' => array(
						'sanitize_callback' => 'sanitize_text_field',
					),
				),
				'last_name'          => array(
					'description' => __( 'Last name for the user.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit' ),
					'arg_options' => array(
						'sanitize_callback' => 'sanitize_text_field',
					),
				),
				'email'              => array(
					'description' => __( 'The email address for the user.' ),
					'type'        => 'string',
					'format'      => 'email',
					'context'     => array( 'view', 'edit' ),
					'required'    => true,
				),
				'url'                => array(
					'description' => __( 'URL of the user.' ),
					'type'        => 'string',
					'format'      => 'uri',
					'context'     => array( 'embed', 'view', 'edit' ),
				),
				'description'        => array(
					'description' => __( 'Description of the user.' ),
					'type'        => 'string',
					'context'     => array( 'embed', 'view', 'edit' ),
				),
				'link'               => array(
					'description' => __( 'Author URL of the user.' ),
					'type'        => 'string',
					'format'      => 'uri',
					'context'     => array( 'embed', 'view', 'edit' ),
					'readonly'    => true,
				),
				'locale'             => array(
					'description' => __( 'Locale for the user.' ),
					'type'        => 'string',
					'enum'        => array_merge( array( '', 'en_US' ), get_available_languages() ),
					'context'     => array( 'edit' ),
				),
				'nickname'           => array(
					'description' => __( 'The nickname for the user.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit' ),
					'arg_options' => array(
						'sanitize_callback' => 'sanitize_text_field',
					),
				),
				'slug'               => array(
					'description' => __( 'An alphanumeric identifier for the user.' ),
					'type'        => 'string',
					'context'     => array( 'embed', 'view', 'edit' ),
					'arg_options' => array(
						'sanitize_callback' => array( $this, 'sanitize_slug' ),
					),
				),
				'registered_date'    => array(
					'description' => __( 'Registration date for the user.' ),
					'type'        => 'string',
					'format'      => 'date-time',
					'context'     => array( 'edit' ),
					'readonly'    => true,
				),
				'roles'              => array(
					'description' => __( 'Roles assigned to the user.' ),
					'type'        => 'array',
					'items'       => array(
						'type' => 'string',
					),
					'context'     => array( 'edit' ),
				),
				'password'           => array(
					'description' => __( 'Password for the user (never included).' ),
					'type'        => 'string',
					'context'     => array(), // Password is never displayed.
					'required'    => true,
					'arg_options' => array(
						'sanitize_callback' => array( $this, 'check_user_password' ),
					),
				),
				'capabilities'       => array(
					'description' => __( 'All capabilities assigned to the user.' ),
					'type'        => 'object',
					'context'     => array( 'edit' ),
					'readonly'    => true,
				),
				'extra_capabilities' => array(
					'description' => __( 'Any extra capabilities assigned to the user.' ),
					'type'        => 'object',
					'context'     => array( 'edit' ),
					'readonly'    => true,
				),
				'tabs'               => array(
					'description' => __( 'Get all items in user like course, lesson, quiz...' ),
					'type'        => 'array',
					'context'     => array( 'view' ),
				),
				'avatar_url'         => array(
					'description' => __( 'URL avatar' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit' ),
				),
				'avatar_size'        => array(
					'description' => __( 'URL avatar size' ),
					'type'        => 'array',
					'context'     => array( 'view' ),
				),
				'instructor_data'    => array(
					'description' => __( 'Instructor data' ),
					'type'        => 'array',
					'context'     => array( 'view' ),
				),
				'custom_register'    => array(
					'description' => __( 'Get custom register fields.' ),
					'type'        => 'object',
					'context'     => array( 'view' ),
				),
				'social'             => array(
					'description' => __( 'Get social fields.' ),
					'type'        => 'object',
					'context'     => array( 'view' ),
				),
			),
		);

		$schema['properties']['meta'] = $this->meta->get_field_schema();

		return $this->add_additional_fields_schema( $schema );
	}

	public function get_collection_params() {
		$query_params = parent::get_collection_params();

		$query_params['context']['default'] = 'view';

		$query_params['exclude'] = array(
			'description' => __( 'Ensure the result set excludes specific IDs.' ),
			'type'        => 'array',
			'items'       => array(
				'type' => 'integer',
			),
			'default'     => array(),
		);

		$query_params['include'] = array(
			'description' => __( 'Limit the result set to specific IDs.' ),
			'type'        => 'array',
			'items'       => array(
				'type' => 'integer',
			),
			'default'     => array(),
		);

		$query_params['offset'] = array(
			'description' => __( 'Offset the result set by a specific number of items.' ),
			'type'        => 'integer',
		);

		$query_params['order'] = array(
			'default'     => 'asc',
			'description' => __( 'Sorting attributes in ascending or descending order.' ),
			'enum'        => array( 'asc', 'desc' ),
			'type'        => 'string',
		);

		$query_params['orderby'] = array(
			'default'     => 'name',
			'description' => __( 'Sort collections by the object attribute.' ),
			'enum'        => array(
				'id',
				'include',
				'name',
				'registered_date',
				'slug',
				'include_slugs',
				'email',
				'url',
			),
			'type'        => 'string',
		);

		$query_params['slug'] = array(
			'description' => __( 'Limit result set to users with one or more specific slugs.' ),
			'type'        => 'array',
			'items'       => array(
				'type' => 'string',
			),
		);

		$query_params['roles'] = array(
			'description' => __( 'Limit result set to users matching at least one specific role provided. Accepts csv list or single role.' ),
			'type'        => 'array',
			'items'       => array(
				'type' => 'string',
			),
		);

		$query_params['who'] = array(
			'description' => __( 'Limit result set to users who are considered authors.' ),
			'type'        => 'string',
			'enum'        => array(
				'authors',
			),
		);

		/**
		 * Filters REST API collection parameters for the users controller.
		 *
		 * This filter registers the collection parameter, but does not map the
		 * collection parameter to an internal WP_User_Query parameter.  Use the
		 * `rest_user_query` filter to set WP_User_Query arguments.
		 *
		 * @since 4.7.0
		 *
		 * @param array $query_params JSON Schema-formatted collection parameters.
		 */
		return apply_filters( 'rest_user_collection_params', $query_params );
	}
}
