<?php
/**
 * LearnDash Users Listing Class.
 *
 * @package LearnDash
 * @subpackage admin
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ( class_exists( 'Learndash_Admin_Posts_Listing' ) ) && ( ! class_exists( 'Learndash_Admin_Users_Listing' ) ) ) {
	/**
	 * Class for LearnDash Users Listing Pages.
	 */
	class Learndash_Admin_Users_Listing extends Learndash_Admin_Posts_Listing {

		/**
		 * Public constructor for class
		 */
		public function __construct() {
			$this->post_type = 'user';

			parent::__construct();
		}

		/**
		 * Called via the WordPress init action hook.
		 */
		public function listing_init() {
			$this->selectors = array(
				'group_id'  => array(
					'type'                     => 'post_type',
					'post_type'                => learndash_get_post_type_slug( 'group' ),
					'show_all_value'           => '',
					'show_all_label'           => sprintf(
						// translators: placeholder: Groups.
						esc_html_x( 'All %s', 'placeholder: Groups', 'learndash' ),
						LearnDash_Custom_Label::get_label( 'groups' )
					),
					'listing_query_function'   => array( $this, 'listing_filter_by_user_group' ),
					'selector_filter_function' => array( $this, 'selector_filter_for_user_group' ),
					'selector_value_function'  => array( $this, 'selector_value_for_group' ),
				),
				'course_id' => array(
					'type'                     => 'post_type',
					'post_type'                => learndash_get_post_type_slug( 'course' ),
					'show_all_value'           => '',
					'show_all_label'           => sprintf(
						// translators: placeholder: Courses.
						esc_html_x( 'All %s', 'placeholder: Courses', 'learndash' ),
						LearnDash_Custom_Label::get_label( 'courses' )
					),
					'selector_filters'         => array( 'group_id' ),
					'listing_query_function'   => array( $this, 'listing_filter_by_user_course' ),
					'selector_filter_function' => array( $this, 'selector_filter_for_user_course' ),
					'selector_value_function'  => array( $this, 'selector_value_for_course' ),
				),
			);

			$this->columns = array(
				'groups_courses' => array(
					'label'   => sprintf(
						// translators: placeholder: Groups, Courses.
						esc_html_x( 'Enrolled %1$s / %2$s', 'placeholder: Groups, Courses', 'learndash' ),
						LearnDash_Custom_Label::get_label( 'groups' ),
						LearnDash_Custom_Label::get_label( 'courses' )
					),
					'display' => array( $this, 'show_column_user_groups_courses' ),
				),
			);

			parent::listing_init();
		}

		/**
		 * Call via the WordPress load sequence for admin pages.
		 */
		public function on_load_listing() {
			if ( $this->post_type_check() ) {
				$this->listing_init();

				if ( 'user' === $this->post_type ) {
					// Add the top nav filter selectors.
					add_action( 'restrict_manage_users', array( $this, 'restrict_manage_users_selectors' ), 50 );

					// Add the columns headers and rows.
					add_filter( 'manage_users_columns', array( $this, 'manage_column_headers' ), 50, 1 );
					add_filter( 'manage_users_custom_column', array( $this, 'manage_user_column_rows' ), 50, 3 );

					// Filter the Users listing query args.
					add_filter( 'users_list_table_query_args', array( $this, 'users_list_table_query_args' ), 50, 1 );
				}
			}
		}

		/**
		 * Adds the user course filter in admin.
		 *
		 * Fires on `restrict_manage_users` hook.
		 *
		 * @param string $location Optional. The location of the extra table nav markup: 'top' or 'bottom'. Default empty.
		 */
		public function restrict_manage_users_selectors( $location = '' ) {
			if ( ! $this->post_type_check() ) {
				return;
			}

			if ( 'top' !== $location ) {
				return;
			}

			$this->show_nonce_field();
			$this->show_early_selectors();
			$this->show_post_type_selectors();
			$this->show_late_selectors();

			$button_id = 'bottom' === $location ? 'ld_submit' : 'ld_submit_bottom';
			submit_button( esc_html__( 'Filter', 'learndash' ), 'learndash', $button_id, false );
		}

		/**
		 * This function fill filter the table listing items based on filters selected.
		 * Called via 'parse_query' filter from WP.
		 *
		 * @since 3.2.3
		 *
		 * @param array $q_vars Query vars.
		 *
		 * @return array $q_vars Query vars.
		 */
		public function users_list_table_query_args( $q_vars = array() ) {
			if ( $this->post_type_check() ) {

				// First build a list of the filter values.
				$this->fill_selectors_values();

				if ( ! empty( $this->selectors ) ) {
					foreach ( $this->selectors as $post_type_key => &$selector ) {
						if ( ( isset( $selector['listing_query_function'] ) ) && ( ! empty( $selector['listing_query_function'] ) ) && ( is_callable( $selector['listing_query_function'] ) ) ) {
							$q_vars = call_user_func( $selector['listing_query_function'], $q_vars, $selector );
						}
					}
				}

				return $q_vars;
			}
		}

		/**
		 * Filter the main query listing by the group_id
		 *
		 * @since 3.2.3
		 *
		 * @param array $q_vars   Query vars for table listing
		 * @param array $selector Array of attributes used to display the filter selector.
		 *
		 * @return object $q_vars.
		 */
		protected function listing_filter_by_user_group( $q_vars = array(), $selector = array() ) {
			if ( ( isset( $selector['selected'] ) ) && ( ! empty( $selector['selected'] ) ) ) {
				if ( learndash_is_group_leader_user( get_current_user_id() ) ) {
					$group_ids = learndash_get_administrators_group_ids( get_current_user_id() );
					$group_ids = array_map( 'absint', $group_ids );

					// If the Group Leader doesn't have groups or not a managed group them clear our selected group_id
					if ( ( empty( $group_ids ) ) || ( in_array( absint( $selector['selected'] ), $group_ids, true ) === false ) ) {
						$selector['selected'] = 0;
					}
				}

				if ( ! empty( $selector['selected'] ) ) {
					$q_vars['meta_key']     = 'learndash_group_users_' . $selector['selected'];
					$q_vars['meta_value']   = $selector['selected'];
					$q_vars['meta_compare'] = '=';
				}
			}

			return $q_vars;
		}

		/**
		 * Filter the main query listing by the course_id
		 *
		 * @since 3.2.3
		 *
		 * @param  array $q_vars   Query vars used for the table listing
		 * @param  array $selector Array of attributes used to display the filter selector.
		 *
		 * @return array $q_vars.
		 */
		protected function listing_filter_by_user_course( $q_vars = array(), $selector = array() ) {
			if ( ( isset( $selector['selected'] ) ) && ( ! empty( $selector['selected'] ) ) ) {
				if ( learndash_is_group_leader_user( get_current_user_id() ) ) {
					$group_ids = learndash_get_administrators_group_ids( get_current_user_id() );
					if ( ! empty( $group_ids ) && is_array( $group_ids ) ) {
						$course_ids = array();
						foreach ( $group_ids as $group_id ) {
							$group_course_ids = learndash_group_enrolled_courses( $group_id );
							if ( ! empty( $group_course_ids ) && is_array( $group_course_ids ) ) {
								$course_ids = array_merge( $course_ids, $group_course_ids );
							}
						}
						if ( empty( $course_ids ) ) {
							$filter_course_id = 0;
						}
					}
				}

				if ( ! empty( $selector['selected'] ) ) {
					$course_users_query = learndash_get_users_for_course( $selector['selected'], array(), false );
					if ( ( is_a( $course_users_query, 'WP_User_Query' ) ) && ( property_exists( $course_users_query, 'results' ) ) && ( ! empty( $course_users_query->results ) ) ) {
						$user_ids = $course_users_query->get_results();
						if ( ! empty( $user_ids ) ) {
							$q_vars['include'] = $user_ids;
						}
					} else {
						$q_vars['include'] = array( 0 );
					}
				}
			}

			return $q_vars;
		}

		/**
		 * Group Selector Filter.
		 *
		 * @since 3.2.3
		 *
		 * @param array $q_vars   Array of query vars.
		 * @param array $selector Selector array.
		 *
		 * @return array $q_vars  Query Args array.
		 */
		protected function selector_filter_for_user_group( $q_vars = array(), $selector = array() ) {
			if ( ( learndash_is_group_leader_user( get_current_user_id() ) ) && ( 'advanced' !== learndash_get_group_leader_manage_groups() ) ) {
				$gl_group_ids = learndash_get_administrators_group_ids( get_current_user_id() );
				if ( ! empty( $gl_group_ids ) ) {
					$q_vars['post__in'] = $gl_group_ids;
				} else {
					$q_vars['post__in'] = array( 0 );
				}
			}

			if ( has_filter( 'learndash_user_groups_options_filter' ) ) {
				/**
				 * Filters user groups filter query arguments.
				 *
				 * @deprecated 3.2.3 No replacement.
				 *
				 * @param array  $query_options_group An array of user groups filter query arguments.
				 * @param string $post_type           Post type to check.
				 */
				apply_filters_deprecated( 'learndash_user_groups_options_filter', array(), learndash_get_post_type_slug( 'group' ), '3.2.3' );
			}

			return $q_vars;
		}

		/**
		 * Course Selector Filter.
		 *
		 * @since 3.2.3
		 *
		 * @param array $q_vars   Array of query vars.
		 * @param array $selector Selector array.
		 *
		 * @return array $q_vars   Query Args array.
		 */
		protected function selector_filter_for_user_course( $q_vars = array(), $selector = array() ) {
			$group_selector = $this->get_selector( 'group_id' );
			if ( ( $group_selector ) && ( isset( $group_selector['selected'] ) ) && ( ! empty( $group_selector['selected'] ) ) ) {
				$group_course_ids = learndash_group_enrolled_courses( absint( $group_selector['selected'] ) );
				$group_course_ids = array_map( 'absint', $group_course_ids );
				if ( ! empty( $group_course_ids ) ) {
					$q_vars['post__in'] = $group_course_ids;
				} else {
					$q_vars['post__in'] = array( 0 );
				}
			} else {
				if ( ( learndash_is_group_leader_user( get_current_user_id() ) ) && ( 'advanced' !== learndash_get_group_leader_manage_courses() ) ) {
					$gl_course_ids = learndash_get_groups_administrators_courses( get_current_user_id() );
					if ( ! empty( $gl_course_ids ) ) {
						$q_vars['post__in'] = $gl_course_ids;
					} else {
						$q_vars['post__in'] = array( 0 );
					}
				}
			}

			if ( has_filter( 'learndash_user_courses_options_filter' ) ) {
				/**
				 * Filters users filter query arguments.
				 *
				 * @deprecated 3.2.3 No replacement.
				 *
				 * @param array  $query_options_course An array of users filter query arguments.
				 * @param string $post_type            Post type to check.
				 */
				apply_filters_deprecated( 'learndash_user_courses_options_filter', array(), learndash_get_post_type_slug( 'course' ), '3.2.3' );
			}

			return $q_vars;
		}


		/**
		 * Output custom user column row data
		 *
		 * @since 3.2.3
		 *
		 * @param string  $column_content Optional. Column content. Default empty.
		 * @param string  $column_name Column slug or row being displayed.
		 * @param integer $post_id     Post ID of row being displayed.
		 */
		public function manage_user_column_rows( $column_content = '', $column_name = '', $user_id = 0 ) {
			if ( $this->post_type_check() ) {
				if ( ! empty( $this->columns ) ) {
					foreach ( $this->columns as $column_key => $column ) {
						if ( $column_key === $column_name ) {
							if ( ( isset( $column['display'] ) ) && ( ! empty( $column['display'] ) ) && ( is_callable( $column['display'] ) ) ) {
								$column_content .= call_user_func( $column['display'], $column_content, $column_name, $user_id );
							}
						}
					}
				}
			}

			return $column_content;
		}

		/**
		 * Show the User Courses column.
		 *
		 * @since 3.2.3
		 *
		 * @param string $column_content Optional. Column content. Default empty.
		 * @param string $column_name    Optional. Name of the column. Default empty.
		 * @param int    $user_id        Optional. User ID. Default 0.
		 *
		 * @return string Users custom column content.
		 */
		public function show_column_user_groups_courses( $column_content = '', $column_name = '', $user_id = 0 ) {
			$user_groups = learndash_get_users_group_ids( $user_id, true );
			if ( empty( $user_groups ) ) {
				$user_groups = array();
			}

			if ( ! empty( $user_groups ) ) {
				$filter_url = add_query_arg(
					array(
						'post_type' => learndash_get_post_type_slug( 'group' ),
						'user_id'   => $user_id,
					),
					admin_url( 'edit.php' )
				);

				if ( ! empty( $column_content ) ) {
					$column_content .= '<br />';
				}

				$link_aria_label = sprintf(
					// translators: placeholder: Groups, User Nicename.
					esc_html_x( 'Filter %1$s by user "%2$s"', 'placeholder: Groups, User Nicename', 'learndash' ),
					LearnDash_Custom_Label::get_label( 'groups' ),
					get_user_by( 'ID', $user_id )->display_name
				);

				$column_content .= sprintf(
					// translators: placeholder: Groups, filter Groups by user URL.
					esc_html_x( 'Total %1$s: %2$s', 'placeholder: Groups, filter Groups by user URL', 'learndash' ),
					LearnDash_Custom_Label::get_label( 'groups' ),
					'<a href="' . esc_url( $filter_url ) . '" aria-label="' . esc_attr( $link_aria_label ) . '">' . count( $user_groups ) . '</a>'
				);

				$row_actions     = array(
					'ld-post-filter' => '<a href="' . esc_url( $filter_url ) . '" aria-label="' . esc_attr( $link_aria_label ) . '">' . esc_html__( 'filter', 'learndash' ) . '</a>',
				);
				$column_content .= $this->list_table_row_actions( $row_actions );
			}

			$user_courses = learndash_user_get_enrolled_courses( $user_id );
			if ( empty( $user_courses ) ) {
				$user_courses = array();
			}

			if ( ! empty( $user_courses ) ) {
				$filter_url = add_query_arg(
					array(
						'post_type' => learndash_get_post_type_slug( 'course' ),
						'user_id'   => $user_id,
					),
					admin_url( 'edit.php' )
				);

				if ( ! empty( $column_content ) ) {
					$column_content .= '<br />';
				}

				$link_aria_label = sprintf(
					// translators: placeholder: Courses, User Nicename.
					esc_html_x( 'Filter %1$s by user "%2$s"', 'placeholder: Courses, User Nicename', 'learndash' ),
					LearnDash_Custom_Label::get_label( 'courses' ),
					get_user_by( 'ID', $user_id )->display_name
				);

				$column_content .= sprintf(
					// translators: placeholder: Courses, filter Courses by user URL.
					esc_html_x( 'Total %1$s: %2$s', 'placeholder: Courses, filter Courses by user URL', 'learndash' ),
					LearnDash_Custom_Label::get_label( 'courses' ),
					'<a href="' . esc_url( $filter_url ) . '" aria-label="' . esc_attr( $link_aria_label ) . '">' . count( $user_courses ) . '</a>'
				);

				$row_actions     = array(
					'ld-post-filter' => '<a href="' . esc_url( $filter_url ) . '" aria-label="' . esc_attr( $link_aria_label ) . '">' . esc_html__( 'filter', 'learndash' ) . '</a>',
				);
				$column_content .= $this->list_table_row_actions( $row_actions );
			}

			return $column_content;
		}

		// End of functions.
	}
}
new Learndash_Admin_Users_Listing();
