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Filename : uninstall.php
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<?php
/**
 * Uninstall UM
 *
 */

// Exit if accessed directly.
if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
	exit;
}

if ( ! defined( 'UM_PATH' ) ) {
	define( 'UM_PATH', plugin_dir_path( __FILE__ ) );
}

if ( ! defined( 'UM_URL' ) ) {
	define( 'UM_URL', plugin_dir_url( __FILE__ ) );
}

if ( ! defined( 'UM_PLUGIN' ) ) {
	define( 'UM_PLUGIN', plugin_basename( __FILE__ ) );
}

//for delete Email options only for Core email notifications
remove_all_filters( 'um_email_notifications' );
//for delete only Core Theme Link pages
remove_all_filters( 'um_core_pages' );

require_once plugin_dir_path( __FILE__ ) . 'includes/class-functions.php';
require_once plugin_dir_path( __FILE__ ) . 'includes/class-init.php';

$delete_options = UM()->options()->get( 'uninstall_on_delete' );
if ( ! empty( $delete_options ) ) {

	//remove uploads
	$upl_folder = UM()->files()->upload_basedir;
	UM()->files()->remove_dir( $upl_folder );

	//remove core settings
	$settings_defaults = UM()->config()->settings_defaults;
	foreach ( $settings_defaults as $k => $v ) {
		UM()->options()->remove( $k );
	}

	//delete UM Custom Post Types posts
	$um_posts = get_posts(
		array(
			'post_type'   => array(
				'um_form',
				'um_directory',
				'um_role',
				'um_private_content',
				'um_mailchimp',
				'um_profile_tabs',
				'um_social_login',
				'um_review',
				'um_frontend_posting',
				'um_notice',
			),
			'post_status' => array( 'publish', 'pending', 'draft', 'auto-draft', 'future', 'private', 'inherit', 'trash' ),
			'numberposts' => -1,
		)
	);

	foreach ( $um_posts as $um_post ) {
		delete_option( 'um_existing_rows_' . $um_post->ID );
		delete_option( 'um_form_rowdata_' . $um_post->ID );
		wp_delete_post( $um_post->ID, 1 );
	}

	global $wp_roles;

	$role_keys = get_option( 'um_roles', array() );

	if ( class_exists( '\WP_Roles' ) ) {
		if ( ! isset( $wp_roles ) ) {
			$wp_roles = new \WP_Roles();
		}

		if ( $role_keys ) {
			foreach ( $role_keys as $roleID ) {
				$role_meta = get_option( "um_role_{$roleID}_meta" );
				if ( ! empty( $role_meta ) && ! empty( $wp_roles->roles[ $roleID ] ) ) {
					$wp_roles->roles[ $roleID ] = array_diff( $wp_roles->roles[ $roleID ], $role_meta );
				}
			}
		}

		update_option( $wp_roles->role_key, $wp_roles->roles );
	}

	//remove user role meta
	if ( $role_keys ) {
		foreach ( $role_keys as $role_key ) {
			delete_option( 'um_role_' . $role_key . '_meta' );
		}

		$um_custom_role_users = get_users(
			array(
				'role__in' => $role_keys,
			)
		);

		if ( ! empty( $um_custom_role_users ) ) {
			foreach ( $um_custom_role_users as $custom_role_user ) {
				foreach ( $role_keys as $role_key ) {
					if ( user_can( $custom_role_user, $role_key ) ) {
						$custom_role_user->remove_role( $role_key );
					}
				}
			}
		}
	}

	delete_option( '__ultimatemember_sitekey' );
	delete_option( 'um_flush_rewrite_rules' );

	$statuses = array(
		'approved',
		'awaiting_admin_review',
		'awaiting_email_confirmation',
		'inactive',
		'rejected',
	);

	foreach ( $statuses as $status ) {
		delete_transient( "um_count_users_{$status}" );
	}
	delete_transient( 'um_count_users_pending_dot' );
	delete_transient( 'um_count_users_unassigned' ); // legacy but still need to delete while uninstall.

	//remove all users cache
	UM()->user()->remove_cache_all_users();

	global $wpdb;

	$wpdb->query(
		"DELETE
		FROM {$wpdb->usermeta}
		WHERE meta_key LIKE '_um%' OR
			  meta_key LIKE 'um%' OR
			  meta_key LIKE 'reviews%' OR
			  meta_key = 'submitted' OR
			  meta_key = 'account_status' OR
			  meta_key = 'password_rst_attempts' OR
			  meta_key = 'profile_photo' OR
			  meta_key = '_enable_new_follow' OR
			  meta_key = '_enable_new_friend' OR
			  meta_key = '_mylists' OR
			  meta_key = '_enable_new_pm' OR
			  meta_key = '_hidden_conversations' OR
			  meta_key = '_pm_blocked' OR
			  meta_key = '_notifications_prefs' OR
			  meta_key = '_profile_progress' OR
			  meta_key = '_completed' OR
			  meta_key = '_cannot_add_review' OR
			  meta_key = 'synced_profile_photo' OR
			  meta_key = 'full_name' OR
			  meta_key = '_reviews' OR
			  meta_key = '_reviews_compound' OR
			  meta_key = '_reviews_total' OR
			  meta_key = '_reviews_avg'"
	);

	$wpdb->query(
		"DELETE
		FROM {$wpdb->postmeta}
		WHERE meta_key LIKE '_um%' OR
			  meta_key LIKE 'um%'"
	);

	// Remove all tables from extensions
	$results = $wpdb->get_results( "SHOW TABLES LIKE '{$wpdb->prefix}um\_%'" );
	if ( $results ) {
		foreach ( $results as $index => $value ) {
			foreach ( $value as $table_name ) {
				$um_groups_members = $wpdb->prefix . 'um_groups_members';
				if ( $table_name === $um_groups_members ) {
					$wpdb->query(
						"DELETE posts, term_rel, pmeta, terms, tax, commetns
						FROM {$wpdb->posts} posts
						LEFT JOIN {$wpdb->term_relationships} term_rel ON (posts.ID = term_rel.object_id)
						LEFT JOIN {$wpdb->postmeta} pmeta ON (posts.ID = pmeta.post_id)
						LEFT JOIN {$wpdb->terms} terms ON (term_rel.term_taxonomy_id = terms.term_id)
						LEFT JOIN {$wpdb->term_taxonomy} tax ON (term_rel.term_taxonomy_id = tax.term_taxonomy_id)
						LEFT JOIN {$wpdb->comments} commetns ON (commetns.comment_post_ID = posts.ID)
						WHERE posts.post_type = 'um_groups' OR
							  posts.post_type = 'um_groups_discussion'"
					);
				}
				$wpdb->query( $wpdb->prepare( "DROP TABLE IF EXISTS %i", $table_name ) );
			}
		}
	}

	//remove options from extensions
	//user photos
	$um_user_photos = get_posts(
		array(
			'post_type'   => array(
				'um_user_photos',
			),
			'post_status' => array( 'publish', 'pending', 'draft', 'auto-draft', 'future', 'private', 'inherit', 'trash' ),
			'numberposts' => -1,
		)
	);
	if ( $um_user_photos ) {
		foreach ( $um_user_photos as $um_user_photo ) {
			$attachments = get_attached_media( 'image', $um_user_photo->ID );
			foreach ( $attachments as $attachment ) {
				wp_delete_attachment( $attachment->ID, 1 );
			}
			wp_delete_post( $um_user_photo->ID, 1 );
		}
	}

	//user notes
	$um_notes = get_posts(
		array(
			'post_type'   => array(
				'um_notes',
			),
			'post_status' => array( 'publish', 'pending', 'draft', 'auto-draft', 'future', 'private', 'inherit', 'trash' ),
			'numberposts' => -1,
		)
	);
	if ( $um_notes ) {
		foreach ( $um_notes as $um_note ) {
			$attachments = get_attached_media( 'image', $um_note->ID );
			foreach ( $attachments as $attachment ) {
				wp_delete_attachment( $attachment->ID, 1 );
			}
			wp_delete_post( $um_note->ID, 1 );
		}
	}

	// User tags
	$wpdb->query(
		"DELETE tax, terms
		FROM {$wpdb->term_taxonomy} tax
		LEFT JOIN {$wpdb->terms} terms ON (tax.term_taxonomy_id = terms.term_id)
		WHERE tax.taxonomy = 'um_user_tag'"
	);

	//mailchimp
	$mailchimp_log = UM()->files()->upload_basedir . 'mailchimp.log';
	if ( file_exists( $mailchimp_log ) ) {
		unlink( $mailchimp_log );
	}

	$um_options = $wpdb->get_results(
		"SELECT option_name
		FROM {$wpdb->options}
		WHERE option_name LIKE '_um%' OR
			  option_name LIKE 'um_%' OR
			  option_name LIKE 'widget_um%' OR
			  option_name LIKE 'ultimatemember_%'"
	);

	foreach ( $um_options as $um_option ) {
		delete_option( $um_option->option_name );
	}

	//social activity
	$um_activities = get_posts(
		array(
			'post_type'   => array(
				'um_activity',
			),
			'post_status' => array( 'publish', 'pending', 'draft', 'auto-draft', 'future', 'private', 'inherit', 'trash' ),
			'numberposts' => -1,
		)
	);
	foreach ( $um_activities as $um_activity ) {
		$image = get_post_meta( $um_activity->ID, '_photo', true );
		if ( $image ) {
			$user_id    = get_post_meta( $um_activity->ID, '_user_id', true );
			$upload_dir = wp_upload_dir();
			$image_path = $upload_dir['basedir'] . '/ultimatemember/' . $user_id . '/' . $image;
			if ( file_exists( $image_path ) ) {
				unlink( $image_path );
			}
		}
		wp_delete_post( $um_activity->ID, 1 );
	}
}