<?php
/**
 * User rewrite/routing/bootstrap flush + author redirects
 *
 * @package AKSRT
 */

defined('ABSPATH') || exit;

// ============================================================
// 三、URL 路由与模板加载
// ============================================================

// --- 3a. /user/{昵称} 自定义重写 ---
add_filter('query_vars', function ($vars) {
    $vars[] = 'aksrt_user_center';
    $vars[] = 'aksrt_user_center_tab';
    $vars[] = 'aksrt_author_identifier';
	$vars[] = 'aksrt_message_view';
    return $vars;
});

add_action('template_redirect', function () {
    if (is_admin() || wp_doing_ajax() || is_feed() || is_embed() || is_preview()) {
        return;
    }
	$request_path = trim((string) parse_url($_SERVER['REQUEST_URI'] ?? '', PHP_URL_PATH), '/');
	if ($request_path === 'profile' || str_starts_with($request_path, 'profile/')) {
		global $wp_query;
		if ($wp_query instanceof WP_Query) { $wp_query->set_404(); }
		status_header(404);
		nocache_headers();
		return;
	}
	if (!get_query_var('aksrt_message_view') && is_page() && get_page_template_slug(get_queried_object_id()) === 'templates/pages/page-messages.php') {
		global $wp_query;
		if ($wp_query instanceof WP_Query) { $wp_query->set_404(); }
		status_header(404);
		nocache_headers();
		return;
	}

    $resolved_path = aksrt_get_current_special_template_path();
    if ($resolved_path === '') {
        return;
    }

    status_header(200);
    load_template($resolved_path, true);
    exit;
}, 100);

// /user/{tab} only accepts registered user-center tabs; former public /user/{slug}
// addresses must not silently resolve to the user-center home.
add_action('template_redirect', function () {
    if (is_admin() || wp_doing_ajax()) {
        return;
    }
    $tab = (string) get_query_var('aksrt_user_center_tab');
    if ($tab === '') {
        return;
    }
    $tab = $tab === 'balance' ? 'credits' : sanitize_key($tab);
    $allowed = class_exists('\\AKSRT\\User\\Center')
        ? array_keys(\AKSRT\User\Center::get_instance()->get_dashboard_tabs())
        : ['profile', 'level', 'creator', 'posts', 'follow', 'comments', 'favorites', 'credits', 'vip', 'orders', 'auth', 'revenue', 'msg', 'settings'];
    if (!in_array($tab, $allowed, true)) {
        global $wp_query;
        if ($wp_query instanceof WP_Query) { $wp_query->set_404(); }
        status_header(404);
        nocache_headers();
    }
}, 1);

add_action('init', function () {
    add_rewrite_tag('%aksrt_user_center%', '([^&]+)');
    add_rewrite_tag('%aksrt_user_center_tab%', '([^/]+)');
    add_rewrite_tag('%aksrt_author_identifier%', '([^/]+)');
	add_rewrite_tag('%aksrt_message_view%', '(unread|posts|like|system)');
	add_rewrite_rule('^message/?$', 'index.php?aksrt_message_view=unread', 'top');
	add_rewrite_rule('^message/(posts|like|system)/?$', 'index.php?aksrt_message_view=$matches[1]', 'top');
    add_rewrite_rule('^user/([a-z0-9_-]+)/?$', 'index.php?aksrt_user_center=1&aksrt_user_center_tab=$matches[1]', 'top');
    add_rewrite_rule('^author/([^/]+)/?$', 'index.php?aksrt_author_identifier=$matches[1]', 'top');
});

// --- 3b. 统一模板拦截器（核心）---
// 拦截所有使用主题特殊模板的页面请求，确保正确加载
add_filter('template_include', function ($template) {
    $resolved_path = aksrt_get_current_special_template_path();
    if ($resolved_path !== '') {
        return $resolved_path;
    }

    // A) /user/{昵称} even if special-path helper returned empty (user missing → 404).
    $identifier = (string) get_query_var('aksrt_author_identifier');
    if ($identifier !== '') {
        $user = function_exists('aksrt_resolve_public_user') ? aksrt_resolve_public_user($identifier) : null;
        if ($user instanceof WP_User) {
            $tpl = aksrt_locate_template_file('templates/pages/page-user-home.php');
            if ($tpl) {
                global $aksrt_profile_user;
                $aksrt_profile_user = $user;
                return $tpl;
            }
        }
        // Unknown nicename: force 404 instead of blank page.
        global $wp_query;
        if ($wp_query instanceof WP_Query) {
            $wp_query->set_404();
            status_header(404);
            nocache_headers();
        }
        $four = get_query_template('404');
        return $four ?: $template;
    }

    // B) ordinary assigned page templates.
    if (is_page()) {
        $page_id = get_queried_object_id();
        if ($page_id) {
            $slug = (string) get_post_field('post_name', $page_id);
            $page_template = get_post_meta($page_id, '_wp_page_template', true);
            if (is_string($page_template) && strpos($page_template, 'templates/pages/') === 0) {
                $tpl = aksrt_locate_template_file($page_template);
                if ($tpl) {
                    return $tpl;
                }
            }
        }
    }

    return $template;
}, 99);

add_filter('template_include', function ($template) {
    $resolved_path = aksrt_get_current_special_template_path();
    if ($resolved_path !== '') {
        return $resolved_path;
    }

    if (get_query_var('aksrt_user_center')) {
        $profile_template = aksrt_locate_template_file('templates/pages/page-profile.php');
        if ($profile_template) {
            return $profile_template;
        }
    }

    if (is_page()) {
        $page_id = get_queried_object_id();
        if ($page_id > 0) {
            $page_template = get_post_meta($page_id, '_wp_page_template', true);
            $resolved_template = aksrt_resolve_page_template_file(
                is_string($page_template) ? $page_template : '',
                (string) get_post_field('post_name', $page_id)
            );

            if ($resolved_template !== '') {
                $resolved_path = aksrt_locate_template_file($resolved_template);
                if ($resolved_path) {
                    return $resolved_path;
                }
            }
        }
    }

    return $template;
}, 100);

// ============================================================
// 四、自动维护 + flush
// ============================================================
add_action('init', function () {
    global $_aksrt_special_templates;

    // 后台/AJAX：检查并创建缺失页面（含 profile 用户中心）
    $pages_bootstrapped = get_option('aksrt_template_pages_bootstrapped');
    $requested_template_key = (!is_admin() && !wp_doing_ajax()) ? aksrt_get_requested_template_key() : '';
    if (is_admin() || wp_doing_ajax() || $pages_bootstrapped !== AKSRT_VERSION) {
        foreach ($_aksrt_special_templates as $key => $cfg) {
            aksrt_ensure_template_page($key);
        }

        if ($pages_bootstrapped !== AKSRT_VERSION) {
            update_option('aksrt_template_pages_bootstrapped', AKSRT_VERSION);
        }
    } elseif ($requested_template_key !== '') {
        aksrt_ensure_template_page($requested_template_key);
    }

    // 统一 flush 检查 — bump when user-home rewrite / author override changes
    $rewrite_version = AKSRT_VERSION . ':message-routing-v1';
    $flushed = get_option('aksrt_user_rules_flushed');
    $rules   = get_option('rewrite_rules');
    $need_flush = ($flushed !== $rewrite_version)
        || !is_array($rules)
        || $rules === []
        || !get_option('permalink_structure');

    // Dev/plain installs often have empty permalink_structure → pretty /user/ 404s at Apache.
    // Force a usable structure so registered rewrite rules actually apply.
    if (!get_option('permalink_structure')) {
        update_option('permalink_structure', '/%postname%/');
        $need_flush = true;
    }

    if ($need_flush) {
        flush_rewrite_rules(true);
        update_option('aksrt_user_rules_flushed', $rewrite_version);
    }
});

// 页面变更时清缓存
add_action('save_post', function ($pid) { if (get_post_type($pid) === 'page') aksrt_clear_template_page_cache(); });
add_action('delete_post', function ($pid) { if (get_post_type($pid) === 'page') aksrt_clear_template_page_cache(); });

// ============================================================
// 六、作者链接改写 — 强制覆盖 WP 默认 /author/{slug}/
// ============================================================
add_filter('author_link', function ($link, $author_id) {
    $author_id = (int) $author_id;
    if ($author_id > 0 && function_exists('aksrt_get_user_home_url')) {
        return aksrt_get_user_home_url($author_id);
    }
    $user = get_userdata($author_id);
    $slug = $user ? $user->user_nicename : ('user-' . max(0, $author_id));
    if (!get_option('permalink_structure')) {
        return add_query_arg('aksrt_author', rawurlencode($slug), home_url('/'));
    }
    return home_url('/author/' . trailingslashit($slug));
}, 99, 2);

// Accept ?user_nicename= when pretty rewrites are unavailable.
add_filter('request', function ($query_vars) {
    if (empty($query_vars['aksrt_author_identifier']) && !empty($_GET['aksrt_author'])) {
        $query_vars['aksrt_author_identifier'] = sanitize_text_field(wp_unslash((string) $_GET['aksrt_author']));
    }
    if (empty($query_vars['aksrt_user_center']) && isset($_GET['aksrt_user_center'])) {
        $query_vars['aksrt_user_center'] = '1';
    }
    return $query_vars;
});

// Pretty-permalink author archives → public user home.
add_action('template_redirect', function () {
    if (is_admin() || wp_doing_ajax() || is_feed() || is_embed()) {
        return;
    }
    if (!is_author()) {
        return;
    }
    $author_id = (int) get_queried_object_id();
    if ($author_id <= 0) {
        $author_id = (int) get_query_var('author');
    }
    if ($author_id <= 0) {
        return;
    }
    $target = function_exists('aksrt_get_user_home_url')
        ? aksrt_get_user_home_url($author_id)
        : home_url('/user/');
    if ($target === '' || $target === home_url('/')) {
        return;
    }
    wp_safe_redirect($target, 301);
    exit;
}, 1);

// Catch bare ?author=ID when is_author() did not fire.
add_action('template_redirect', function () {
    if (is_admin() || wp_doing_ajax()) {
        return;
    }
    if (empty($_GET['author'])) {
        return;
    }
    if (get_query_var('aksrt_author_identifier') || get_query_var('aksrt_user_center')) {
        return;
    }
    if (is_author()) {
        return; // handled above
    }
    $author_id = (int) $_GET['author'];
    if ($author_id > 0 && function_exists('aksrt_get_user_home_url')) {
        wp_safe_redirect(aksrt_get_user_home_url($author_id), 301);
        exit;
    }
}, 2);

// ============================================================
// AJAX: 保存用户个人资料（显示名称、简介、联系方式）