<?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\MessageUserStatus;
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;
    }


    // ====== ====== ====== 通知操作的处理 ====== ====== ======
    /**
     * 推送消息
     */
    public function pushNotice(array $data = [], string $scene = "Default"): int
    {
        // 拼装数据（可能需要处理 消息标题、内容等等数据，可自行处理）
        $pushData = $this->assemblyProcess($scene, $data);
        // 写入消息
        $msgId = $this->insertMessage($pushData);
        // 推送
        $this->pushWs($msgId, $pushData);
        return $msgId;
    }

    /** 
     * 执行推送
     */
    public function pushWs(int $msgId, array $pushData)
    {
        foreach ($pushData['recipient'] as $userId) {
            // 查询消息数据
            $config['model'] = MessageUserStatus::class;
            $config['order']['id'] = 'desc';
            $config['with']['message'] = ['sender_id', 'sender_type', 'msg_no', 'title', 'content', 'scene', 'created_at'];
            $config['where']['uid'] = $userId;
            $config['where']['msg_id'] = $msgId;
            $config['where']['status'] = 0;
            $wsData = (new MessageUserStatusService())->logicShow($config)->toArray();
            
            // 组装数据
            if (isset($wsData['message']) && $wsData['message']) {
                $wsData['message']['sender_name'] = User::where('id', $wsData['message']['sender_id'])->value('name') ?: '系统';
                $wsData['message']['scene_name'] = MessageNotifications::SCENE[$wsData['message']['scene']];
                $wsData['message']['created_at'] = date('Y-m-d H:i:s', $wsData['message']['created_at']);
            }

            // 获取未读消息数
            $counts = MessageUserStatus::where('uid', $userId)->where('status', 0)->count('id');
            $data = [
                'notice_data'   => $wsData,
                'unread_counts' => $counts
            ];

            // 执行推送
            (new \app\common\utils\WsEvents())->pushWsNotice($data, $userId);
        }
        return true;
    }

    /**
     * 插入消息
     * @param array $data
     * @return int
     */
    public function insertMessage(array $data): int
    {
        // 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'   => implode(',', $data['recipient']),
            'push_method' => $data['push_method'],
        ]);
        // 写用户状态
        $this->addUserStatus($msgId, $data['recipient']);
        return $msgId;
    }
    
    /**
     * 数据拼装方法调用
     */
    protected function assemblyProcess(string $op, mixed $data): mixed
    {
        $hook = "assembly{$op}";
        return method_exists($this, $hook)
            ? $this->{$hook}($data)
            : $data;
    }

    /**
     * 默认数据拼装
     */
    public function assemblyDefault(array $data)
    {
        return [
            'sender_id'     => isset($data['sender_id']) && $data['sender_id'] ? $data['sender_id'] : 0,
            'sender_type'   => isset($data['sender_type']) && $data['sender_type'] ? $data['sender_type'] : 'system',
            'title'         => isset($data['title']) && $data['title'] ? $data['title'] : '系统通知',
            'content'       => isset($data['content']) && $data['content'] ? $data['content'] : '系统通知-默认',
            'scene'         => isset($data['scene']) && $data['scene'] ? $data['scene'] : 1,
            'recipient'     => isset($data['recipient']) && count($data['recipient']) > 0 ? $data['recipient'] : $this->getAllUserIds(),
            'push_method'   => isset($data['push_method']) && $data['push_method'] ? $data['push_method'] : 0,
        ];
    }

    //  *** *** 可以扩展数据组拼装方法 *** *** 

    // ====== ====== ====== 通知操作的基础方法 ====== ====== ======
    
    /**
     * 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();
    }
}