<?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[] = 'user_nicename';
    return $vars;
});

add_action('template_redirect', function () {
    if (is_admin() || wp_doing_ajax() || is_feed() || is_embed() || is_preview()) {
        return;
    }

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

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

add_action('init', function () {
    add_rewrite_tag('%aksrt_user_center%', '([^&]+)');
    add_rewrite_tag('%user_nicename%', '([^/]+)');
    add_rewrite_rule('^profile/?$', 'index.php?aksrt_user_center=1', 'top');
    add_rewrite_rule('^user/([^/]+)/?$', 'index.php?user_nicename=$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;
    }

    return $template;

    global $_aksrt_special_templates;

    // A) /user/{昵称} 路由 → 加载公开主页模板
    $nicename = get_query_var('user_nicename');
    if (!empty($nicename)) {
        $user = get_user_by('slug', $nicename);
        if (!$user) return $template; // 不存在的用户 → 默认 404

        $tpl = aksrt_locate_template_file('templates/pages/page-user-home.php');
        if (!$tpl) {
            // 兜底：如果新模板不存在，回退到旧 profile 模板
            $tpl = aksrt_locate_template_file($_aksrt_special_templates['profile']['file']);
        }
        if (!$tpl) return $template;

        global $aksrt_profile_user;
        $aksrt_profile_user = $user;
        return $tpl;
    }

    // B) 普通页面 → 检测是否使用了我们的特殊模板，确保加载正确的模板文件
    // （防止 WP 在某些情况下未能正确解析自定义页面模板）
    if (is_page()) {
        $page_id = get_queried_object_id();
        if ($page_id) {
            $page_template = get_post_meta($page_id, '_wp_page_template', true);
            if ($page_template && strpos($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
    $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 => $cfg) {
            if ($key === 'profile') {
                continue;
            }
            aksrt_ensure_template_page($key);
        }

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

    // 统一 flush 检查
    $rewrite_version = AKSRT_VERSION . ':sign-profile-routing-v1';
    $flushed = get_option('aksrt_user_rules_flushed');
    if ($flushed !== $rewrite_version) {
        flush_rewrite_rules(false);
        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
// ============================================================
add_filter('author_link', function ($link, $author_id) {
    $user = get_userdata($author_id);
    $slug = $user ? $user->user_nicename : 'user-' . $author_id;
    return home_url('/user/' . trailingslashit($slug));
}, 10, 2);

add_action('template_redirect', function () {
    if (!is_author()) return;
    $author_id = get_queried_object_id();
    if ($author_id) {
        $user = get_userdata($author_id);
        $slug = $user ? $user->user_nicename : 'user-' . $author_id;
        wp_safe_redirect(home_url('/user/' . trailingslashit($slug)), 301);
        exit;
    }
});

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