<?php

namespace App\Support;

use Illuminate\Http\Request;

/**
 * 根据后台 API 路径与请求体生成简短中文「操作项」说明。
 */
final class AdminAuditOperationDescriber
{
    public static function describe(Request $request, array $payload, int $statusCode): string
    {
        $method = strtoupper($request->method());
        $path = self::normalizeApiPath($request);
        $fail = $statusCode >= 400 ? '（失败）' : '';

        $name = static fn (?string $s): ?string => $s !== null && trim($s) !== '' ? trim($s) : null;

        if ($path === 'auth/logout' && $method === 'POST') {
            return '退出登录'.$fail;
        }

        // --- 场馆 ---
        if ($path === 'venues' && $method === 'POST') {
            $t = $name($payload['name'] ?? null);

            return $t !== null ? '新增场馆「'.$t.'」'.$fail : '新增场馆'.$fail;
        }
        if (preg_match('#^venues/(\d+)$#', $path, $m)) {
            $id = $m[1];
            if ($method === 'PUT' || $method === 'PATCH') {
                $t = $name($payload['name'] ?? null);

                return $t !== null ? '编辑场馆「'.$t.'」'.$fail : '编辑场馆（ID:'.$id.'）'.$fail;
            }
            if ($method === 'DELETE') {
                return '删除场馆（ID:'.$id.'）'.$fail;
            }
        }
        if (preg_match('#^venues/(\d+)/audit/approve$#', $path, $m)) {
            return '审核通过场馆（ID:'.$m[1].'）'.$fail;
        }
        if (preg_match('#^venues/(\d+)/audit/reject$#', $path, $m)) {
            return '驳回场馆审核（ID:'.$m[1].'）'.$fail;
        }
        if ($path === 'venues/import/preview' && $method === 'POST') {
            return '导入场馆·预览'.$fail;
        }
        if ($path === 'venues/import/confirm' && $method === 'POST') {
            return '导入场馆·确认入库'.$fail;
        }

        // --- 活动 ---
        if ($path === 'activities' && $method === 'POST') {
            $t = $name($payload['title'] ?? null);

            return $t !== null ? '新增活动「'.$t.'」'.$fail : '新增活动'.$fail;
        }
        if (preg_match('#^activities/(\d+)$#', $path, $m)) {
            $id = $m[1];
            if ($method === 'PUT' || $method === 'PATCH') {
                $t = $name($payload['title'] ?? null);

                return $t !== null ? '编辑活动「'.$t.'」'.$fail : '编辑活动（ID:'.$id.'）'.$fail;
            }
            if ($method === 'DELETE') {
                return '删除活动（ID:'.$id.'）'.$fail;
            }
        }
        if (preg_match('#^activities/(\d+)/audit/approve$#', $path, $m)) {
            $hot = $payload['mark_hot'] ?? null;

            return '审核通过活动（ID:'.$m[1].'）'.($hot === true ? '·设为热门' : '').$fail;
        }
        if (preg_match('#^activities/(\d+)/behind-scenes$#', $path, $m) && ($method === 'PUT' || $method === 'PATCH')) {
            return '更新活动幕后花絮（ID:'.$m[1].'）'.$fail;
        }
        if (preg_match('#^activities/(\d+)/hot-flag$#', $path, $m) && $method === 'POST') {
            $on = $payload['is_hot'] ?? null;

            return '设置活动热门标记（ID:'.$m[1].'）'.($on === true ? '·是' : ($on === false ? '·否' : '')).$fail;
        }
        if (preg_match('#^activities/(\d+)/audit/reject$#', $path, $m)) {
            return '驳回活动审核（ID:'.$m[1].'）'.$fail;
        }
        if (preg_match('#^activities/(\d+)/toggle$#', $path, $m)) {
            return '切换活动启停（ID:'.$m[1].'）'.$fail;
        }
        if (preg_match('#^activities/(\d+)/restore$#', $path, $m)) {
            return '恢复活动（ID:'.$m[1].'）'.$fail;
        }

        // --- 抢票活动 ---
        if ($path === 'ticket-grab-events' && $method === 'POST') {
            $t = $name($payload['title'] ?? null);

            return $t !== null ? '新增抢票活动「'.$t.'」'.$fail : '新增抢票活动'.$fail;
        }
        if (preg_match('#^ticket-grab-events/(\d+)$#', $path, $m)) {
            $id = $m[1];
            if ($method === 'PUT' || $method === 'PATCH') {
                $t = $name($payload['title'] ?? null);

                return $t !== null ? '编辑抢票活动「'.$t.'」'.$fail : '编辑抢票活动（ID:'.$id.'）'.$fail;
            }
            if ($method === 'DELETE') {
                return '删除抢票活动（ID:'.$id.'）'.$fail;
            }
        }
        if (preg_match('#^ticket-grab-events/(\d+)/toggle$#', $path, $m)) {
            return '切换抢票活动启停（ID:'.$m[1].'）'.$fail;
        }

        // --- 管理员与权限 ---
        if ($path === 'admin-users' && $method === 'POST') {
            $u = $name($payload['username'] ?? null);

            return $u !== null ? '新增管理员「'.$u.'」'.$fail : '新增管理员'.$fail;
        }
        if (preg_match('#^admin-users/(\d+)$#', $path, $m) && ($method === 'PUT' || $method === 'PATCH')) {
            return '编辑管理员（ID:'.$m[1].'）'.$fail;
        }
        if ($path === 'admin-roles' && $method === 'POST') {
            $slug = $name($payload['slug'] ?? null);
            $rn = $name($payload['name'] ?? null);
            if ($slug !== null && $rn !== null) {
                return '新增角色「'.$rn.'」（'.$slug.'）'.$fail;
            }

            return '新增角色'.$fail;
        }
        if (preg_match('#^admin-roles/([a-z0-9_]+)$#', $path, $m) && ($method === 'PUT' || $method === 'PATCH')) {
            return '编辑角色（'.$m[1].'）'.$fail;
        }
        if (preg_match('#^admin-roles/([a-z0-9_]+)$#', $path, $m) && $method === 'DELETE') {
            return '删除角色（'.$m[1].'）'.$fail;
        }

        if ($path === 'admin-menus' && $method === 'POST') {
            $t = $name($payload['name'] ?? null);

            return $t !== null ? '新增菜单「'.$t.'」'.$fail : '新增菜单'.$fail;
        }
        if (preg_match('#^admin-menus/(\d+)$#', $path, $m)) {
            $id = $m[1];
            if ($method === 'PUT' || $method === 'PATCH') {
                $t = $name($payload['name'] ?? null);

                return $t !== null ? '编辑菜单「'.$t.'」'.$fail : '编辑菜单（ID:'.$id.'）'.$fail;
            }
            if ($method === 'DELETE') {
                return '删除菜单（ID:'.$id.'）'.$fail;
            }
        }

        if (preg_match('#^role-menu-permissions/(.+)$#', $path, $m) && ($method === 'PUT' || $method === 'PATCH')) {
            return '保存角色菜单权限（'.$m[1].'）'.$fail;
        }

        if ($path === 'role-permissions/batch-update' && $method === 'POST') {
            return '批量更新功能权限'.$fail;
        }
        if (preg_match('#^role-permissions/(\d+)$#', $path, $m) && ($method === 'PUT' || $method === 'PATCH')) {
            return '更新功能权限（ID:'.$m[1].'）'.$fail;
        }

        // --- 上传 ---
        if ($path === 'upload' && $method === 'POST') {
            return '上传文件'.$fail;
        }
        if ($path === 'upload/delete' && $method === 'POST') {
            return '删除已上传文件'.$fail;
        }

        // --- 核销 ---
        if ($path === 'reservations/verify' && $method === 'POST') {
            return '核销预约'.$fail;
        }
        if ($path === 'activity-registrations/quick-blacklist/batch' && $method === 'POST') {
            return '批量列入灰名单（报名）'.$fail;
        }
        if (preg_match('#^activity-registrations/(\d+)/quick-blacklist$#', $path, $m) && $method === 'POST') {
            return '一键列入灰名单（报名 ID:'.$m[1].'）'.$fail;
        }

        // --- 灰名单 ---
        if ($path === 'blacklists' && $method === 'POST') {
            return '新增灰名单记录'.$fail;
        }
        if (preg_match('#^blacklists/(\d+)$#', $path, $m)) {
            $id = $m[1];
            if ($method === 'PUT' || $method === 'PATCH') {
                return '编辑灰名单（ID:'.$id.'）'.$fail;
            }
            if ($method === 'DELETE') {
                return '删除灰名单（ID:'.$id.'）'.$fail;
            }
        }
        if ($path === 'blacklists/batch-import' && $method === 'POST') {
            return '批量导入灰名单'.$fail;
        }
        if ($path === 'user-management/blacklist' && $method === 'POST') {
            return '批量列入灰名单用户'.$fail;
        }
        if ($path === 'user-management/unblacklist' && $method === 'POST') {
            return '批量移出灰名单'.$fail;
        }

        // --- 研学 / 字典 ---
        if ($path === 'study-tours' && $method === 'POST') {
            $t = $name($payload['title'] ?? null);

            return $t !== null ? '新增研学路线「'.$t.'」'.$fail : '新增研学路线'.$fail;
        }
        if (preg_match('#^study-tours/(\d+)$#', $path, $m)) {
            $id = $m[1];
            if ($method === 'PUT' || $method === 'PATCH') {
                return '编辑研学路线（ID:'.$id.'）'.$fail;
            }
            if ($method === 'DELETE') {
                return '删除研学路线（ID:'.$id.'）'.$fail;
            }
        }

        if ($path === 'dict-items' && $method === 'POST') {
            return '新增字典项'.$fail;
        }
        if (preg_match('#^dict-items/(\d+)$#', $path, $m)) {
            $id = $m[1];
            if ($method === 'PUT' || $method === 'PATCH') {
                return '编辑字典项（ID:'.$id.'）'.$fail;
            }
            if ($method === 'DELETE') {
                return '删除字典项（ID:'.$id.'）'.$fail;
            }
        }

        // fallback
        return self::fallbackLabel($method, $path).$fail;
    }

    private static function normalizeApiPath(Request $request): string
    {
        $p = trim($request->path(), '/');
        if (str_starts_with($p, 'api/')) {
            return substr($p, strlen('api/'));
        }

        return $p;
    }

    private static function fallbackLabel(string $method, string $path): string
    {
        return $method.' '.$path;
    }
}