<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

//Announcement CLASS
class Fep_Announcement {
	private static $instance;
	public static function init() {
		if ( ! self::$instance instanceof self ) {
			self::$instance = new self;
		}
		return self::$instance;
	}

	function actions_filters() {
		add_action( 'transition_post_status', array( $this, 'recalculate_user_stats' ), 10, 3 );
		add_action( 'set_user_role', array( $this, 'set_user_role' ), 10, 3 );
		add_filter( 'fep_menu_buttons', array( $this, 'menu' ) );
		if ( fep_current_user_can( 'add_announcement' ) && fep_get_option( 'add_ann_frontend', 0 ) ) {
			add_filter( 'fep_menu_buttons', array( $this, 'menu_new_announcement' ) );
			add_filter( 'fep_filter_switch_new_announcement', array( $this, 'new_announcement' ) );
			add_action( 'fep_posted_action_new_announcement', array( $this, 'fep_posted_action_new_announcement' ) );
		}
		$menu = Fep_Menu::init()->get_menu();
		if ( ! empty( $menu['announcements'] ) ) {
			//add_filter( 'posts_where' , array( $this, 'posts_where' ), 99, 2 );
			add_filter( 'fep_filter_switch_announcements', array( $this, 'announcement_box' ) );
			add_filter( 'fep_filter_switch_view_announcement', array( $this, 'view_announcement' ) );
			add_action( 'fep_posted_bulk_announcement_bulk_action', array( $this, 'bulk_action' ) );
		}
	}

	function menu( $menu ) {
		$menu['announcements'] = array(
			'title'		=> sprintf( __( 'Announcement%s', 'front-end-pm' ), fep_get_new_announcement_button() ),
			'action'	=> 'announcements',
			'priority'	=> 20,
		);
		return $menu;
	}

	function menu_new_announcement( $menu ) {
		$menu['new_announcement'] = array(
			'title'		=> __( 'New Announcement', 'front-end-pm' ),
			'action'	=> 'new_announcement',
			'priority'	=> 22,
		);
		return $menu;
	}

	function new_announcement() {
		$template = fep_locate_template( 'new_announcement_form.php' );
		ob_start();
		include( $template );
		return ob_get_clean();
	}

	function fep_posted_action_new_announcement() {
		if ( ! fep_current_user_can( 'add_announcement' ) ) {
			fep_errors()->add( 'permission', __( 'You do not have permission to create announcement!', 'front-end-pm' ) );
			return;
		}

		Fep_Form::init()->validate_form_field( 'new_announcement' );
		if ( count( fep_errors()->get_error_messages() ) == 0 ) {
			if ( fep_add_announcement() ) {
				fep_success()->add( 'publish', __( 'Announcement successfully added.', 'front-end-pm' ) );
			} else {
				fep_errors()->add( 'undefined', __( 'Something wrong. Please try again.', 'front-end-pm' ) );
			}
		}
	}

	function posts_where( $where, $q ) {
		global $wpdb;
		if ( true === $q->get( 'fep_announcement_include_own' ) && apply_filters( 'fep_filter_announcement_include_own', true ) ) {
			$where .= $wpdb->prepare( " OR ( $wpdb->posts.post_author = %d AND $wpdb->posts.post_status = %s AND $wpdb->posts.post_type = %s )", get_current_user_id(), $q->get( 'post_status' ), $q->get( 'post_type' ) );
		}
		return $where;
	}

	function recalculate_user_stats( $new_status, $old_status, $post ) {
		global $wpdb;
		if ( 'fep_announcement' != $post->post_type || $old_status === $new_status ) {
			return;
		}
		if ( 'publish' == $new_status || 'publish' == $old_status ) {
			delete_metadata( 'user', 0, $wpdb->get_blog_prefix() . '_fep_user_announcement_count', '', true );
		}
		if ( 'publish' == $new_status ) {
			delete_metadata( 'user', 0, $wpdb->get_blog_prefix() . '_fep_notification_dismiss', '', true );
		}
	}

	function set_user_role( $user_id, $role, $old_roles ) {
		delete_user_option( $user_id, '_fep_user_announcement_count' );
	}

	function get_announcement( $id ) {
		$args = array(
			'post_type'		=> 'fep_announcement',
			'post_status'	=> 'publish',
			'post__in'		=> array( $id ),
		);
		return new WP_Query( $args );
	}

	function get_user_announcements() {
		$user_id = get_current_user_id();
		$filter = ! empty( $_GET['fep-filter'] ) ? $_GET['fep-filter'] : '';
		$args = array(
			'post_type'		=> 'fep_announcement',
			'post_status'	=> 'publish',
			'post_parent'	=> 0,
			'posts_per_page'=> fep_get_option( 'announcements_page', 15 ),
			'paged'			=> ! empty( $_GET['feppage'] ) ? absint( $_GET['feppage'] ): 1,
		);
		$args['meta_query'][] = array(
			'relation' => 'OR',
			array(
				'key'		=> '_fep_participant_roles',
				'value'		=> get_userdata( $user_id )->roles,
				'compare'	=> 'IN',
			),
			array(
				'key'		=> '_fep_author',
				'value'		=> $user_id,
				'compare'	=> '=',
			),
		);
		$args['meta_query'][] = array(
			'relation' => 'OR',
			array(
				'key'		=> '_fep_deleted_by',
				//'value'	=> serialize( $user_id),
				'compare'	=> 'NOT EXISTS',
			),
			array(
				'key'		=> '_fep_deleted_by',
				'value'		=> serialize( $user_id ),
				'compare'	=> 'NOT LIKE',
			),
		);
		if ( ! $user_id ) {
			$args['post__in'] = array(0);
		}
		if ( ! empty( $_GET['fep-search'] ) ) {
			$args['s'] = $_GET['fep-search'];
		}
		switch ( $filter ) {
			case 'after-i-registered':
				$args['date_query'] = array( 'after' => fep_get_userdata( $user_id, 'user_registered', 'id' ) );
				break;
			case 'read':
				$args['meta_query'][] = array(
					'key'		=> '_fep_read_by',
					'value'		=> serialize( $user_id ),
					'compare'	=> 'LIKE',
				);
				break;
			case 'unread':
				$args['meta_query'][] = array(
					'relation' => 'OR',
					array(
						'key'		=> '_fep_read_by',
						//'value'	=> serialize( $user_id),
						'compare'	=> 'NOT EXISTS',
					),
					array(
						'key'		=> '_fep_read_by',
						'value'		=> serialize( $user_id ),
						'compare'	=> 'NOT LIKE',
					),
				);
				break;
			default:
				$args = apply_filters( 'fep_announcement_query_args_' . $filter, $args );
				break;
		}
		$args = apply_filters( 'fep_announcement_query_args', $args );
		return new WP_Query( $args );
	}

	function get_user_announcement_count( $value = 'all', $force = false, $user_id = false ) {
		if ( ! $user_id ) {
			$user_id = get_current_user_id();
		}
		if ( 'show-all' == $value ) {
			$value = 'total';
		}
		if ( ! $user_id ) {
			if ( 'all' == $value ) {
				return array();
			} else {
				return 0;
			}
		}
		$user_meta = get_user_option( '_fep_user_announcement_count', $user_id );
		if ( false === $user_meta || $force || ! isset( $user_meta['unread'] ) ) {
			$args = array(
				'post_type'		=> 'fep_announcement',
				'post_status'	=> 'publish',
				'post_parent'	=> 0,
				'posts_per_page'=> -1,
				'fields'		=> 'ids',
			);
			$args['meta_query'][] = array(
				'relation' => 'OR',
				array(
					'key'		=> '_fep_participant_roles',
					'value'		=> get_userdata( $user_id )->roles,
					'compare'	=> 'IN',
				),
				array(
					'key'		=> '_fep_author',
					'value'		=> $user_id,
					'compare'	=> '=',
				),
			);
			$args['meta_query'][] = array(
				'relation' => 'OR',
				array(
					'key'		=> '_fep_deleted_by',
					//'value'	=> serialize( $user_id),
					'compare'	=> 'NOT EXISTS',
				),
				array(
					'key'		=> '_fep_deleted_by',
					'value'		=> serialize( $user_id ),
					'compare'	=> 'NOT LIKE',
				),
			);
			$args['meta_query'][] = array(
				'relation' => 'OR',
				array(
					'key'		=> '_fep_read_by',
					'compare'	=> 'NOT EXISTS',
				),
				array(
					'key'		=> '_fep_read_by',
					'value'		=> serialize( $user_id ),
					'compare'	=> 'NOT LIKE',
				),
			);
			$args = apply_filters( 'fep_announcement_count_query_args', $args );
			$announcements = get_posts( $args );
			$user_meta = array(
				'unread' => count( $announcements ),
			);
			update_user_option( $user_id, '_fep_user_announcement_count', $user_meta );
		}
		if ( isset( $user_meta[ $value ] ) ) {
			return $user_meta[ $value ];
		}
		if ( 'all' == $value ) {
				return $user_meta;
			} else {
				return 0;
			}
	}

	function bulk_action( $action, $ids = null ) {
		if ( null === $ids ) {
			$ids = ! empty( $_POST['fep-message-cb'] ) ? $_POST['fep-message-cb'] : array();
		}
		if ( ! $action || ! $ids || ! is_array( $ids ) ) {
			return '';
		}
		$count = 0;
		foreach ( $ids as $id ) {
			if ( $this->bulk_individual_action( $action, absint( $id ) ) ) {
				$count++;
			}
		}
		$message = '';
		if ( $count ) {
			delete_user_option( get_current_user_id(), '_fep_user_announcement_count' );
			if ( 'delete' == $action ) {
				$message = sprintf( _n( '%s announcement successfully deleted.', '%s announcements successfully deleted.', $count, 'front-end-pm' ), number_format_i18n( $count) );
			} 
			//$message = '<div class="fep-success">' .$message.'</div>';
		}
		$message = apply_filters( 'fep_bulk_action_message', $message, $count );
		if ( $message ) {
			fep_success()->add( 'success', $message );
		}
	}

	function bulk_individual_action( $action, $id ) {
		$return = false;
		switch ( $action ) {
			case 'delete':
				if ( fep_current_user_can( 'view_announcement', $id ) ) {
					$deleted = get_post_meta( $id, '_fep_deleted_by', true );
					if ( ! is_array( $deleted ) ) {
						$deleted = array();
					}
					if ( empty( $deleted[ get_current_user_id() ] ) ) {
						$deleted[ get_current_user_id() ] = time();
						$return = update_post_meta( $id, '_fep_deleted_by', $deleted );
					}
				}
				break;
			default:
				$return = apply_filters( 'fep_announcement_bulk_individual_action', false, $action, $id );
				break;
		}
		return $return;
	}

	function get_table_bulk_actions() {
		$actions = array(
			'delete' => __( 'Delete', 'front-end-pm' )
		);
		return apply_filters( 'fep_announcement_table_bulk_actions', $actions );
	}

	function get_table_filters() {
		$filters = array(
			'show-all'			=> __( 'Show all', 'front-end-pm' ),
			'read'				=> __( 'Read', 'front-end-pm' ),
			'unread'			=> __( 'Unread', 'front-end-pm' ),
			'after-i-registered'=> __( 'After I registered', 'front-end-pm' ),
		);
		return apply_filters( 'fep_announcementbox_table_filters', $filters );
	}

	function get_table_columns() {
		$columns = array(
			'fep-cb'=> __( 'Checkbox', 'front-end-pm' ),
			'date'	=> __( 'Date', 'front-end-pm' ),
			'title'	=> __( 'Title', 'front-end-pm' ),
		);
		return apply_filters( 'fep_announcement_table_columns', $columns );
	}

	function get_column_content( $column) {
		switch ( $column ) {
			case has_action( "fep_get_announcement_column_content_{$column}" ):
				do_action( "fep_get_announcement_column_content_{$column}" );
				break;
			case 'fep-cb':
				?><input type="checkbox" class="fep-cb" name="fep-message-cb[]" value="<?php echo get_the_ID(); ?>" /><?php
				break;
			case 'date':
				?><span class="fep-message-date"><?php the_time(); ?></span><?php
				break;
			case 'title':
				if ( ! fep_is_read() ) {
					$span = '<span class="fep-unread-classp"><span class="fep-unread-class">' .__( 'Unread', 'front-end-pm' ). '</span></span>';
					$class = ' fep-strong';
				} else {
					$span = '';
					$class = '';
				} 
				?><span class="<?php echo $class; ?>"><a href="<?php echo fep_query_url( 'view_announcement', array( 'fep_id'=> get_the_ID() )); ?>"><?php the_title(); ?></a></span><?php echo $span; ?><div class="fep-message-excerpt"><?php echo fep_get_the_excerpt(100); ?></div><?php
				break;
			default:
				do_action( 'fep_get_announcement_column_content', $column );
				break;
		}
	}

	function announcement_box() {		
		$g_filter = ! empty( $_GET['fep-filter'] ) ? $_GET['fep-filter'] : '';
		$announcements = $this->get_user_announcements();
		$total_announcements = $announcements->found_posts;
		$template = fep_locate_template( 'announcement_box.php' );
		ob_start();
		include( $template );
		return ob_get_clean();
	}

	function view_announcement() {
		global $shortcode_tags;
		if ( isset( $_GET['fep_id'] ) ) {
			$id = absint( $_GET['fep_id'] );
		} else {
			$id = ! empty( $_GET['id'] ) ? absint( $_GET['id'] ) : 0;
		}
		if ( ! $id || ! fep_current_user_can( 'view_announcement', $id ) ) {
			return '<div class="fep-error">' . __( 'You do not have permission to view this announcement!', 'front-end-pm' ) . '</div>';
		}
		$announcement = $this->get_announcement( $id );
		$template = fep_locate_template( 'view_announcement.php' );
		$parse_shortcode = apply_filters( 'fep_announcement_parse_shortcodes', false );
		if ( ! $parse_shortcode ) {
			$fep_shortcode_tags = $shortcode_tags;
			$shortcode_tags = array(); // We will not parse shortcode in our content
		}
		ob_start();
		include( $template );
		$return = ob_get_clean();
		if ( ! $parse_shortcode ) {
			$shortcode_tags = $fep_shortcode_tags; //reset shortcode tags
		}
		return apply_filters( 'fep_filter_view_announcement', $return, $id );
	}
} //END CLASS
add_action( 'wp_loaded', array( Fep_Announcement::init(), 'actions_filters' ) );