<?php

namespace app\common\service;

use app\common\logic\MessageNotificationsLogic;
use app\common\validate\MessageNotificationsValidate;
use app\common\traits\crud\CrudServiceTrait;
use app\common\model\MessageNotifications;
use app\common\model\User;
use support\Db;
use support\Request;

class MessageNotificationsService
{

    use CrudServiceTrait;

    /**
     * 指定当前要操作的模型
     */
    protected string $modelClass = MessageNotifications::class;

    /**
     * 验证器
     */
    protected $validator = MessageNotificationsValidate::class;

    /**
     * 获取验证器
     */
    public function getValidator()
    {
        return  new $this->validator;
    }

    protected function buildQueryConfig(Request $request, string $scene = 'default'): array
    {
        $p = $request->all();
        
        $config = [];
        $config['model'] = $this->modelClass;
        switch ($scene) {
            case 'index':
                $config['order']['id'] = 'desc';
                break;
            case 'show':
                $config['where']['id'] = $p['id'];
                break;
            case 'store':
                break;
            case 'update':
                $config['where']['id'] = $p['id'];
                break;
            case 'destroy':
                $config['where']['id'] = $p['id'];
                break;
        }
        
        return $config;
    }


    public function serviceDestroy(Request $request)
    {
        $config = $this->buildQueryConfig($request, 'destroy');
        $deleted = (new MessageNotificationsLogic())->logicDeleteBy($config);
        return $this->postProcess('Destroy', $deleted);
    }

    /**
     * 添加前置处理
     */
    public function servicePush(Request $request, $data)
    {
        $pushData = [
            'sender_id'     => $request->user->uid,
            'sender_type'   => 'admin',
            'title'         => $data['title'],
            'content'       => $data['content'],
            'scene'         => 1,
            'recipient'     => $data['recipient'],
            'push_method'   => 1
        ];
        $msgId = (new MessageNotificationsService())->pushNotice($pushData);
        return ['msg_id' => $msgId];
    }

    public function afterServiceList($data)
    {
        $data->each(function (&$item) {
            $temp = explode(',', $item->recipient);
            $item->recipient_list = User::whereIn('id', $temp)->pluck('name')->toArray();
            $item->scene_name = MessageNotifications::SCENE[$item->scene];
            $item->push_method_name = MessageNotifications::PUSH_METHOD[$item->push_method];
        });
        unset($item);
        return $data;
    }

    public function afterServiceShow($data)
    {
        $temp = explode(',', $data->recipient);
        $data->recipient_list = User::whereIn('id', $temp)->pluck('name')->toArray();
        $data->scene_name = MessageNotifications::SCENE[$data->scene];
        $data->push_method_name = MessageNotifications::PUSH_METHOD[$data->push_method];
        return $data;
    }

    /**
     * 创建一条消息
     */
    public function createMessage(array $data): int
    {
        $msgId = Db::table('message_notifications')->insertGetId([
            'msg_no'      => generateMsgId(),
            'sender_id'   => $data['sender_id'],
            'sender_type' => $data['sender_type'],
            'title'       => $data['title'],
            'content'     => $data['content'],
            'scene'       => $data['scene'],
            'recipient'   => $data['recipient'],
            'push_method' => $data['push_method'],
            'created_at'  => time(),
        ]);

        return $msgId;
    }

    /**
     * 批量插入用户消息状态
     */
    public function addUserStatus(int $msgId, array $uids)
    {
        $rows = [];
        foreach ($uids as $uid) {
            $rows[] = [
                'msg_id'  => $msgId,
                'uid'     => $uid,
                'status'  => 0,
                'read_at' => null
            ];
        }
        if ($rows) {
            Db::table('message_user_status')->insert($rows);
        }
    }

    /**
     * 标记消息已读
     */
    public function markAsRead(array|string $msgIds, int $uid)
    {
        $query = Db::table('message_user_status')->where('uid', $uid)->where('status', 0);
        if (is_array($msgIds)) {
            $query->whereIn('msg_id', $msgIds);
        }
        return $query->update([
            'status'  => 1,
            'read_at' => time()
        ]);
    }

    /**
     * 获取所有用户ID
     */
    public function getAllUserIds(): array
    {
        return User::where('status', 1)->pluck('id')->toArray();
    }

    /**
     * 批量推送消息
     */
    public function pushNotice(array $data): int
    {
        // 数据结构：
        // $data = [
        //     'sender_id'     => 0,
        //     'sender_type'   => 'system',
        //     'title'         => '测试消息 - 标题',
        //     'content'       => '测试消息 - 内容',
        //     'scene'         => 1,
        //     'recipient'     => [],
        // ];
        
        // 写消息
        $msgId = $this->createMessage([
            'sender_id'   => $data['sender_id'],
            'sender_type' => $data['sender_type'],
            'title'       => $data['title'],
            'content'     => $data['content'],
            'scene'       => $data['scene'],
            'recipient'   => $data['recipient'] ? implode(',', $data['recipient']) : '',
            'push_method' => $data['push_method'],
        ]);

        // 写用户状态
        $uids = count($data['recipient']) > 0 ? $data['recipient'] : $this->getAllUserIds();
        $this->addUserStatus($msgId, $uids);

        // 执行推送
        (new \app\common\utils\WsEvents())->pushNotice($msgId, $data['title'], $data['content'], $data['recipient']);

        return $msgId;
    }
}