<?php
/**
 * WP Business Forum — Uninstaller
 * Wird automatisch aufgerufen wenn das Plugin über WP-Admin gelöscht wird.
 * Entfernt: alle DB-Tabellen, wp_options, Transients, Cron-Jobs, Upload-Verzeichnis.
 */

// Sicherheits-Check — nur via WordPress-Uninstall erlaubt
if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
    exit;
}

global $wpdb;

// ── 1. Alle Datenbank-Tabellen löschen ───────────────────────────────────────
// Reihenfolge beachten: abhängige Tabellen zuerst (Foreign Keys)
$tables = [
    'forum_poll_votes',
    'forum_polls',
    'forum_reactions',
    'forum_notifications',
    'forum_subscriptions',
    'forum_bookmarks',        // ← fehlte: Lesezeichen
    'forum_ignore_list',      // ← Ignore/Block-Liste
    'forum_invites',
    'forum_thread_tags',
    'forum_tags',
    'forum_prefixes',         // ← fehlte: Thread-Präfixe
    'forum_reports',
    'forum_likes',
    'forum_messages',
    'forum_remember_tokens',
    'forum_user_meta',
    'forum_posts',
    'forum_threads',
    'forum_categories',
    'forum_users',
];

foreach ( $tables as $table ) {
    $wpdb->query( "DROP TABLE IF EXISTS `{$wpdb->prefix}{$table}`" );
}

// ── 2. Alle wp_options löschen ───────────────────────────────────────────────
$options = [
    'wbf_settings',
    'wbf_custom_roles',
    'wbf_level_config',
    'wbf_levels_enabled',
    'wbf_profile_fields',
    'wbf_profile_field_cats',
    'wbf_reactions',
    'wbf_forum_page_id',
    'wbf_superadmin_email',
    'wbf_db_version',
    'wbf_word_filter',
];

foreach ( $options as $option ) {
    delete_option( $option );
}

// Multisite: Netzwerk-Optionen ebenfalls entfernen
if ( is_multisite() ) {
    foreach ( $options as $option ) {
        delete_site_option( $option );
    }
}

// ── 3. Transients löschen ────────────────────────────────────────────────────
delete_transient( 'wbf_activation_redirect' );
delete_transient( 'wbf_stats_cache' );
delete_transient( 'wbf_update_check' );

// Alle wbf_* Transients per LIKE-Query entfernen (inkl. Update-Dismissed-Transients)
$wpdb->query(
    "DELETE FROM `{$wpdb->options}`
     WHERE `option_name` LIKE '_transient_wbf_%'
        OR `option_name` LIKE '_transient_timeout_wbf_%'"
);

// ── 4. Geplante Cron-Jobs entfernen ──────────────────────────────────────────
wp_clear_scheduled_hook( 'wbf_check_expired_bans' );
wp_clear_scheduled_hook( 'wbf_check_for_updates' );

// ── 5. Forum-Seite löschen (vom Setup-Wizard erstellt) ───────────────────────
$forum_page_id = get_option( 'wbf_forum_page_id' );
if ( $forum_page_id ) {
    wp_delete_post( (int) $forum_page_id, true ); // true = dauerhaft löschen
}

// ── 6. Upload-Unterverzeichnis entfernen ─────────────────────────────────────
$upload_dir = wp_upload_dir();
$wbf_dir    = trailingslashit( $upload_dir['basedir'] ) . 'wbf-avatars';
if ( is_dir( $wbf_dir ) ) {
    wbf_uninstall_rmdir( $wbf_dir );
}

/**
 * Hilfsfunktion: Verzeichnis rekursiv löschen.
 * Nur innerhalb des WP-Upload-Verzeichnisses erlaubt.
 */
function wbf_uninstall_rmdir( $dir ) {
    $upload_base = wp_upload_dir()['basedir'];
    // Sicherheitscheck: nur Unterverzeichnisse von uploads/ löschen
    if ( strpos( realpath( $dir ), realpath( $upload_base ) ) !== 0 ) {
        return;
    }
    $files = array_diff( scandir( $dir ), [ '.', '..' ] );
    foreach ( $files as $file ) {
        $path = $dir . DIRECTORY_SEPARATOR . $file;
        is_dir( $path ) ? wbf_uninstall_rmdir( $path ) : unlink( $path );
    }
    rmdir( $dir );
}