<?php
/**
 * Plugin Name: WP Business Forum
 * Plugin URI:  https://git.viper.ipv64.net/M_Viper/WP-Business-Forum
 * Description: Professionelles Forum mit eigenem Login, Rollen, Signaturen, Hierarchie und Moderations-Tools.
 * Version:     1.0.2
 * Author:      M_Viper
 * Author URI:  https://m-viper.de
 * Text Domain: wp-business-forum
 */

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

define( 'WBF_PATH',    plugin_dir_path( __FILE__ ) );
define( 'WBF_URL',     plugin_dir_url( __FILE__ ) );
define( 'WBF_VERSION', '1.0.2' );

require_once WBF_PATH . 'includes/class-forum-db.php';
require_once WBF_PATH . 'includes/class-forum-roles.php';
require_once WBF_PATH . 'includes/class-forum-levels.php';
require_once WBF_PATH . 'includes/class-forum-bbcode.php';
require_once WBF_PATH . 'includes/class-forum-auth.php';
require_once WBF_PATH . 'includes/class-forum-shortcodes.php';
require_once WBF_PATH . 'includes/class-forum-ajax.php';
require_once WBF_PATH . 'includes/class-forum-export.php';
require_once WBF_PATH . 'admin/forum-admin.php';
require_once WBF_PATH . 'admin/forum-settings.php';
require_once WBF_PATH . 'admin/forum-setup.php';

// ── Aktivierung ────────────────────────────────────────────────────────────────
register_activation_hook( __FILE__, function() {
    WBF_DB::install();
    // Transient für einmalige Weiterleitung zum Setup-Wizard setzen
    set_transient( 'wbf_activation_redirect', true, 30 );
});

// ── Export / Import Hooks ─────────────────────────────────────────────────────
add_action( 'plugins_loaded', function() {
    WBF_Export::hooks();
}, 5 );

// ── Superadmin-Sync ───────────────────────────────────────────────────────────
add_action( 'wp_login', function() { WBF_Roles::sync_superadmin(); } );
add_action( 'init',     function() { WBF_Roles::sync_superadmin(); } );

// ── Body-Klasse ───────────────────────────────────────────────────────────────
add_filter( 'body_class', function( $classes ) {
    global $post;
    if ( $post && has_shortcode( $post->post_content, 'business_forum' ) ) {
        $classes[] = 'wbf-forum-page';
    }
    return $classes;
});

// ── Cron: Abgelaufene Sperren aufheben ────────────────────────────────────────
add_action( 'wbf_check_expired_bans', function() {
    WBF_DB::check_expired_bans();
} );

if ( ! wp_next_scheduled( 'wbf_check_expired_bans' ) ) {
    wp_schedule_event( time(), 'hourly', 'wbf_check_expired_bans' );
}

register_deactivation_hook( __FILE__, function() {
    wp_clear_scheduled_hook( 'wbf_check_expired_bans' );
    wp_clear_scheduled_hook( 'wbf_check_for_updates' );
} );


// ── Forum-URL Hilfsfunktion ───────────────────────────────────────────────────
function wbf_get_forum_url() {
    // 1. Gespeicherte Seite aus dem Setup-Wizard
    $page_id = get_option('wbf_forum_page_id');
    if ( $page_id ) {
        $url = get_permalink( $page_id );
        if ( $url ) return $url;
    }
    // 2. Fallback: Seite mit [business_forum] Shortcode suchen
    $pages = get_posts([
        'post_type'      => 'page',
        'post_status'    => 'publish',
        'posts_per_page' => 1,
        's'              => 'business_forum',
    ]);
    if ( $pages ) return get_permalink( $pages[0]->ID );
    // 3. Letzter Fallback: aktuelle Seite
    return home_url('/');
}

// ── Assets ────────────────────────────────────────────────────────────────────
add_action( 'wp_enqueue_scripts', function() {
    wp_enqueue_style(  'wbf-style',  WBF_URL . 'assets/css/forum-style.css',  [], WBF_VERSION );
    wp_enqueue_script( 'wbf-script', WBF_URL . 'assets/js/forum-script.js', ['jquery'], WBF_VERSION, true );
    $wbf_user = WBF_Auth::get_current_user();
    if ( $wbf_user ) {
        WBF_DB::touch_last_active( $wbf_user->id );
    }
    wp_localize_script( 'wbf-script', 'WBF', [
        'ajax_url'             => admin_url('admin-ajax.php'),
        'nonce'                => wp_create_nonce('wbf_nonce'),
        'logged_in'            => WBF_Auth::is_forum_logged_in() ? 'yes' : 'no',
        'auto_logout_minutes'  => (int)( wbf_get_settings()['auto_logout_minutes'] ?? 30 ),
        'my_id'                => $wbf_user ? (int)$wbf_user->id : 0,
        'unread_dm'            => $wbf_user ? WBF_DB::count_unread_messages($wbf_user->id) : 0,
        'forum_url'            => wbf_get_forum_url(),
        'reactions'            => WBF_DB::get_allowed_reactions(),
    ]);
});


// ══════════════════════════════════════════════════════════════════════════════
// ── Update-Checker ────────────────────────────────────────────────────────────
// Prüft täglich gegen die Gitea-Releases-API ob eine neue Version verfügbar ist.
// Releases-URL: https://git.viper.ipv64.net/M_Viper/WP-Business-Forum/releases
// ══════════════════════════════════════════════════════════════════════════════

define( 'WBF_UPDATE_API',      'https://git.viper.ipv64.net/api/v1/repos/M_Viper/WP-Business-Forum/releases?limit=1&page=1' );
define( 'WBF_RELEASES_PAGE',   'https://git.viper.ipv64.net/M_Viper/WP-Business-Forum/releases' );
define( 'WBF_UPDATE_TRANSIENT','wbf_update_check' );

/**
 * Holt die neueste Release-Info von Gitea (gecacht per Transient, 12h).
 * Gibt null zurück wenn kein Update verfügbar oder API nicht erreichbar.
 *
 * @return array|null  ['version'=>string, 'url'=>string, 'name'=>string, 'published'=>string, 'body'=>string]
 */
function wbf_get_latest_release() {
    $cached = get_transient( WBF_UPDATE_TRANSIENT );
    if ( $cached !== false ) {
        return $cached ?: null;  // false = noch nie gecacht, '' = kein Update
    }

    $response = wp_remote_get( WBF_UPDATE_API, [
        'timeout'    => 8,
        'user-agent' => 'WP-Business-Forum/' . WBF_VERSION . '; ' . get_bloginfo('url'),
        'sslverify'  => true,
    ] );

    if ( is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200 ) {
        // Bei Fehler 1h warten bevor erneut versucht
        set_transient( WBF_UPDATE_TRANSIENT, '', HOUR_IN_SECONDS );
        return null;
    }

    $body     = wp_remote_retrieve_body( $response );
    $releases = json_decode( $body, true );

    if ( empty($releases) || ! is_array($releases) || empty($releases[0]) ) {
        set_transient( WBF_UPDATE_TRANSIENT, '', 12 * HOUR_IN_SECONDS );
        return null;
    }

    $latest  = $releases[0];
    $version = ltrim( $latest['tag_name'] ?? '', 'v' );   // "v1.2.0" → "1.2.0"

    $info = [
        'version'   => $version,
        'url'       => $latest['html_url'] ?? WBF_RELEASES_PAGE,
        'name'      => $latest['name'] ?? $latest['tag_name'] ?? $version,
        'published' => $latest['published_at'] ?? '',
        'body'      => wp_strip_all_tags( $latest['body'] ?? '' ),
    ];

    // 12 Stunden cachen
    set_transient( WBF_UPDATE_TRANSIENT, $info, 12 * HOUR_IN_SECONDS );
    return $info;
}

/**
 * Prüft ob ein Update verfügbar ist.
 * Gibt die Release-Info zurück wenn Gitea-Version > installierte Version.
 */
function wbf_update_available() {
    $latest = wbf_get_latest_release();
    if ( ! $latest || empty($latest['version']) ) return null;
    if ( version_compare( $latest['version'], WBF_VERSION, '>' ) ) {
        return $latest;
    }
    return null;
}

// ── Cron: täglich Update prüfen (Cache warm halten) ──────────────────────────
add_action( 'wbf_check_for_updates', function() {
    delete_transient( WBF_UPDATE_TRANSIENT );
    wbf_get_latest_release();
} );

if ( ! wp_next_scheduled( 'wbf_check_for_updates' ) ) {
    wp_schedule_event( time(), 'twicedaily', 'wbf_check_for_updates' );
}

// ── Admin-Notice wenn Update verfügbar ───────────────────────────────────────
add_action( 'admin_notices', function() {
    if ( ! current_user_can('manage_options') ) return;

    $update = wbf_update_available();
    if ( ! $update ) return;

    // Notice ausblenden wenn der User sie weggeklickt hat (per GET-Parameter)
    if ( isset($_GET['wbf_dismiss_update']) && check_admin_referer('wbf_dismiss_update') ) {
        set_transient( 'wbf_update_dismissed_' . WBF_VERSION, $update['version'], 7 * DAY_IN_SECONDS );
        wp_safe_redirect( remove_query_arg(['wbf_dismiss_update','_wpnonce']) );
        exit;
    }

    $dismissed = get_transient( 'wbf_update_dismissed_' . WBF_VERSION );
    if ( $dismissed === $update['version'] ) return;

    $dismiss_url = wp_nonce_url(
        add_query_arg('wbf_dismiss_update', '1'),
        'wbf_dismiss_update'
    );
    $changelog_url = esc_url( $update['url'] );
    $new_ver       = esc_html( $update['version'] );
    $cur_ver       = esc_html( WBF_VERSION );

    echo "
    <div class=\"notice notice-warning is-dismissible\" style=\"border-left-color:#f59e0b;padding:12px 15px\">
        <div style=\"display:flex;align-items:center;gap:14px;flex-wrap:wrap\">
            <span style=\"font-size:1.6rem\">🔔</span>
            <div>
                <strong style=\"font-size:.95rem\">WP Business Forum — Update verfügbar!</strong>
                <p style=\"margin:.3rem 0 0;color:#374151\">
                    Version <strong>{$new_ver}</strong> ist verfügbar. Du verwendest <strong>{$cur_ver}</strong>.
                </p>
            </div>
            <div style=\"display:flex;gap:8px;margin-left:auto\">
                <a href=\"{$changelog_url}\" target=\"_blank\" rel=\"noopener\"
                   class=\"button button-primary\" style=\"background:#f59e0b;border-color:#d97706\">
                    📋 Changelog & Download
                </a>
                <a href=\"" . esc_url($dismiss_url) . "\" class=\"button\">Später erinnern</a>
            </div>
        </div>
    </div>";
} );

// ── Update-Badge im WP-Admin-Menü ─────────────────────────────────────────────
add_action( 'admin_menu', function() {
    $update = wbf_update_available();
    if ( ! $update ) return;
    global $menu;
    if ( ! is_array($menu) ) return;
    foreach ( $menu as &$item ) {
        if ( isset($item[2]) && $item[2] === 'wbf-admin' ) {
            $item[0] .= ' <span class="update-plugins"><span class="plugin-count">1</span></span>';
            break;
        }
    }
}, 999 );

// ── Manuellen Cache-Reset erlauben (für die Admin-UI) ─────────────────────────
add_action( 'admin_init', function() {
    if ( ! isset($_GET['wbf_refresh_update']) ) return;
    if ( ! current_user_can('manage_options') ) return;
    if ( ! check_admin_referer('wbf_refresh_update') ) return;
    delete_transient( WBF_UPDATE_TRANSIENT );
    wp_safe_redirect( remove_query_arg(['wbf_refresh_update','_wpnonce']) );
    exit;
} );