<?php

namespace App\Http\Controllers\Mini;

use App\Exceptions\RepositoryException;
use App\Models\NoticeModel;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Modules\AnnoRoute\Attribute\GetRoute;
use Modules\AnnoRoute\Attribute\PutRoute;
use Modules\AnnoRoute\Attribute\RequestAttribute;

/**
 * 小程序通知（本人通知 + 全员广播）
 *
 * 广播已读处理：user_id=0 的广播是全局共享记录，直接改 is_read 会影响其他用户，
 * 因此标记已读时复制一条本人专属的已读记录（data.broadcast_from 记来源），
 * 列表查询时排除已有已读副本的广播。
 */
#[RequestAttribute('/mini', 'mini', authGuard: 'users')]
class NoticeController extends BaseMiniController
{
    /** 本人通知 + 全员广播（user_id in [0, 当前id]），分页 + unread_count */
    #[GetRoute('/notice', authorize: true)]
    public function index(Request $request): JsonResponse
    {
        $user = $this->currentUser($request);

        // 本人已读过的广播来源ID（已读副本记录）
        $readBroadcastIds = NoticeModel::query()
            ->where('user_id', $user->id)
            ->whereNotNull('data->broadcast_from')
            ->pluck('data->broadcast_from');

        $query = NoticeModel::query()->where(function ($q) use ($user, $readBroadcastIds) {
            $q->where('user_id', $user->id)
                ->orWhere(function ($broadcastQuery) use ($readBroadcastIds) {
                    $broadcastQuery->where('user_id', NoticeModel::BROADCAST_USER_ID);
                    if ($readBroadcastIds->isNotEmpty()) {
                        $broadcastQuery->whereNotIn('id', $readBroadcastIds->all());
                    }
                });
        });

        $unreadCount = (clone $query)->where('is_read', NoticeModel::UNREAD)->count();

        $data = $query->orderBy('id', 'desc')
            ->paginate((int) $request->input('pageSize', 10))
            ->toArray();
        $data['unread_count'] = $unreadCount;

        return $this->success($data);
    }

    /** 标记已读（广播 → 复制本人已读副本；个人通知 → 直接更新） */
    #[PutRoute('/notice/{id}/read', authorize: true, where: ['id' => '[0-9]+'])]
    public function read(int $id, Request $request): JsonResponse
    {
        $user = $this->currentUser($request);

        $notice = NoticeModel::whereIn('user_id', [NoticeModel::BROADCAST_USER_ID, $user->id])->find($id);
        if ($notice === null) {
            throw new RepositoryException('通知不存在');
        }

        if ($notice->user_id === NoticeModel::BROADCAST_USER_ID) {
            $exists = NoticeModel::where('user_id', $user->id)
                ->where('data->broadcast_from', $notice->id)
                ->exists();
            if (! $exists) {
                NoticeModel::create([
                    'user_id' => $user->id,
                    'type' => $notice->type,
                    'title' => $notice->title,
                    'content' => $notice->content,
                    'data' => ['broadcast_from' => $notice->id] + (array) $notice->data,
                    'is_read' => NoticeModel::READ,
                    'read_at' => now(),
                ]);
            }
        } elseif ($notice->is_read === NoticeModel::UNREAD) {
            $notice->is_read = NoticeModel::READ;
            $notice->read_at = now();
            $notice->save();
        }

        return $this->success();
    }
}