<?php

namespace App\Http\Controllers\System\Admin;

use Illuminate\Http\Request;
use Illuminate\Http\JsonResponse;
use App\Services\System\NotificationService;
use App\Http\Controllers\Controller;

class Notification extends Controller
{
    /**
     * @var NotificationService
     */
    protected $notificationService;

    /**
     * Notification constructor
     */
    public function __construct(NotificationService $notificationService)
    {
        $this->notificationService = $notificationService;
    }

    /**
     * 获取通知列表
     *
     * @param Request $request
     * @return JsonResponse
     */
    public function index(Request $request): JsonResponse
    {
        $params = $request->all();

        // 如果没有指定user_id，使用当前登录用户
        if (empty($params['user_id'])) {
            $params['user_id'] = auth('admin')->id();
        }

        $result = $this->notificationService->getList($params);

        return response()->json([
            'code' => 200,
            'message' => 'success',
            'data' => $result
        ]);
    }

    /**
     * 获取未读通知
     *
     * @param Request $request
     * @return JsonResponse
     */
    public function unread(Request $request): JsonResponse
    {
        $userId = auth('admin')->id();
        $limit = $request->input('limit', 10);

        $notifications = $this->notificationService->getUnreadNotifications($userId, $limit);

        return response()->json([
            'code' => 200,
            'message' => 'success',
            'data' => [
                'list' => $notifications
            ]
        ]);
    }

    /**
     * 获取未读通知数量
     *
     * @return JsonResponse
     */
    public function unreadCount(): JsonResponse
    {
        $userId = auth('admin')->id();
        $count = $this->notificationService->getUnreadCount($userId);

        return response()->json([
            'code' => 200,
            'message' => 'success',
            'data' => [
                'count' => $count
            ]
        ]);
    }

    /**
     * 获取通知详情
     *
     * @param int $id
     * @return JsonResponse
     */
    public function show(int $id): JsonResponse
    {
        $notification = $this->notificationService->getById($id);

        if (!$notification) {
            return response()->json([
                'code' => 404,
                'message' => 'Notification not found',
                'data' => null
            ], 404);
        }

        // 检查权限
        if ($notification->user_id !== auth('admin')->id()) {
            return response()->json([
                'code' => 403,
                'message' => 'Access denied',
                'data' => null
            ], 403);
        }

        return response()->json([
            'code' => 200,
            'message' => 'success',
            'data' => $notification
        ]);
    }

    /**
     * 标记通知为已读
     *
     * @param Request $request
     * @param int $id
     * @return JsonResponse
     */
    public function markAsRead(Request $request, int $id): JsonResponse
    {
        $userId = auth('admin')->id();
        $result = $this->notificationService->markAsRead($id, $userId);

        if (!$result) {
            return response()->json([
                'code' => 404,
                'message' => 'Notification not found or access denied',
                'data' => null
            ], 404);
        }

        return response()->json([
            'code' => 200,
            'message' => 'Notification marked as read',
            'data' => null
        ]);
    }

    /**
     * 批量标记通知为已读
     *
     * @param Request $request
     * @return JsonResponse
     */
    public function batchMarkAsRead(Request $request): JsonResponse
    {
        $request->validate([
            'ids' => 'required|array',
            'ids.*' => 'integer'
        ]);

        $userId = auth('admin')->id();
        $ids = $request->input('ids');

        $count = $this->notificationService->batchMarkAsRead($ids, $userId);

        return response()->json([
            'code' => 200,
            'message' => 'Notifications marked as read',
            'data' => [
                'count' => $count
            ]
        ]);
    }

    /**
     * 标记所有通知为已读
     *
     * @return JsonResponse
     */
    public function markAllAsRead(): JsonResponse
    {
        $userId = auth('admin')->id();
        $count = $this->notificationService->markAllAsRead($userId);

        return response()->json([
            'code' => 200,
            'message' => 'All notifications marked as read',
            'data' => [
                'count' => $count
            ]
        ]);
    }

    /**
     * 删除通知
     *
     * @param int $id
     * @return JsonResponse
     */
    public function destroy(int $id): JsonResponse
    {
        $userId = auth('admin')->id();
        $result = $this->notificationService->delete($id, $userId);

        if (!$result) {
            return response()->json([
                'code' => 404,
                'message' => 'Notification not found or access denied',
                'data' => null
            ], 404);
        }

        return response()->json([
            'code' => 200,
            'message' => 'Notification deleted',
            'data' => null
        ]);
    }

    /**
     * 批量删除通知
     *
     * @param Request $request
     * @return JsonResponse
     */
    public function batchDelete(Request $request): JsonResponse
    {
        $request->validate([
            'ids' => 'required|array',
            'ids.*' => 'integer'
        ]);

        $userId = auth('admin')->id();
        $ids = $request->input('ids');

        $count = $this->notificationService->batchDelete($ids, $userId);

        return response()->json([
            'code' => 200,
            'message' => 'Notifications deleted',
            'data' => [
                'count' => $count
            ]
        ]);
    }

    /**
     * 清空已读通知
     *
     * @return JsonResponse
     */
    public function clearRead(): JsonResponse
    {
        $userId = auth('admin')->id();
        $count = $this->notificationService->clearReadNotifications($userId);

        return response()->json([
            'code' => 200,
            'message' => 'Read notifications cleared',
            'data' => [
                'count' => $count
            ]
        ]);
    }

    /**
     * 获取通知统计
     *
     * @return JsonResponse
     */
    public function statistics(): JsonResponse
    {
        $userId = auth('admin')->id();
        $stats = $this->notificationService->getStatistics($userId);

        return response()->json([
            'code' => 200,
            'message' => 'success',
            'data' => $stats
        ]);
    }

    /**
     * 发送通知（管理员功能）
     *
     * @param Request $request
     * @return JsonResponse
     */
    public function send(Request $request): JsonResponse
    {
        $request->validate([
            'user_ids' => 'nullable|array',
            'user_ids.*' => 'integer',
            'title' => 'required|string|max:200',
            'content' => 'required|string',
            'type' => 'required|string|in:info,success,warning,error,task,system',
            'category' => 'nullable|string|in:system,task,message,reminder,announcement',
            'data' => 'nullable|array',
            'action_type' => 'nullable|string|in:link,modal,none',
            'action_data' => 'nullable|array',
        ]);

        $userIds = $request->input('user_ids');
        $title = $request->input('title');
        $content = $request->input('content');
        $type = $request->input('type', 'info');
        $category = $request->input('category', 'system');
        $extraData = $request->input('data', []);

        // 如果没有指定user_ids，则发送给所有用户
        if (empty($userIds)) {
            $result = $this->notificationService->broadcast(
                $title,
                $content,
                $type,
                $category,
                $extraData
            );
        } else {
            $result = $this->notificationService->sendToUsers(
                $userIds,
                $title,
                $content,
                $type,
                $category,
                $extraData
            );
        }

        return response()->json([
            'code' => 200,
            'message' => 'Notification sent successfully',
            'data' => [
                'count' => count($result)
            ]
        ]);
    }

    /**
     * 重试发送未发送的通知（管理员功能）
     *
     * @param Request $request
     * @return JsonResponse
     */
    public function retryUnsent(Request $request): JsonResponse
    {
        $limit = $request->input('limit', 100);
        $count = $this->notificationService->retryUnsentNotifications($limit);

        return response()->json([
            'code' => 200,
            'message' => 'Unsent notifications retried',
            'data' => [
                'count' => $count
            ]
        ]);
    }
}