<?php
// +----------------------------------------------------------------------
// | YwxApp [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2026-2036 http://ywxapp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: ywxapp<admin@ywxapp.cn>
// +----------------------------------------------------------------------

declare(strict_types=1);

namespace addon\iot\service;

use think\facade\Db;

/**
 * 场景/自动化引擎（智慧生活核心）
 *
 * 触发三类：
 *   - device_state：设备状态/事件上报 → topic 匹配 + 条件求值（支持 ref 读其他设备影子）
 *   - schedule     ：定时（5 段 cron，Broker 进程内每分钟扫描）
 *   - manual       ：App/后台手动一键执行
 *
 * 执行原则：
 *   - 评估在 Broker 事件钩子内同步、纯内存判断，动作统一入 outbox 异步投递，不阻塞主循环
 *   - 场景配置内存缓存 TTL 30s（同 Auth::loadAclRules 模式，Broker 单进程安全）
 *   - 所有 DB 访问防御式 try/catch
 */
class SceneService
{
    /** 场景缓存 TTL（秒） */
    public const CACHE_TTL = 30;

    protected static array $sceneCache = [];
    protected static int $loadedAt = 0;

    /* ============================================================
     * 建表自愈
     * ========================================================== */

    public static function ensureTables(): bool
    {
        $prefix = Db::connect()->getConfig('prefix') ?: 'wxapp_';
        try {
            Db::execute("CREATE TABLE IF NOT EXISTS `{$prefix}iot_scene` (
                `id` int unsigned NOT NULL AUTO_INCREMENT,
                `member_id` int unsigned NOT NULL DEFAULT '0',
                `title` varchar(64) NOT NULL DEFAULT '', `icon` varchar(32) NOT NULL DEFAULT '',
                `enabled` tinyint(1) NOT NULL DEFAULT '1', `remark` varchar(255) DEFAULT NULL,
                `create_at` int DEFAULT NULL, `update_at` int DEFAULT NULL,
                PRIMARY KEY (`id`), KEY `idx_member` (`member_id`)
            ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4");
            Db::execute("CREATE TABLE IF NOT EXISTS `{$prefix}iot_scene_trigger` (
                `id` int unsigned NOT NULL AUTO_INCREMENT,
                `scene_id` int unsigned NOT NULL DEFAULT '0',
                `type` varchar(16) NOT NULL DEFAULT 'device_state',
                `topic` varchar(255) NOT NULL DEFAULT '', `condition_json` text,
                `cron` varchar(64) NOT NULL DEFAULT '', `enabled` tinyint(1) NOT NULL DEFAULT '1',
                `create_at` int DEFAULT NULL,
                PRIMARY KEY (`id`), KEY `idx_scene` (`scene_id`)
            ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4");
            Db::execute("CREATE TABLE IF NOT EXISTS `{$prefix}iot_scene_action` (
                `id` int unsigned NOT NULL AUTO_INCREMENT,
                `scene_id` int unsigned NOT NULL DEFAULT '0', `sort` int NOT NULL DEFAULT '0',
                `type` varchar(16) NOT NULL DEFAULT 'send_cmd',
                `device_uuid` varchar(64) NOT NULL DEFAULT '', `payload_json` text,
                `topic` varchar(255) NOT NULL DEFAULT '', `create_at` int DEFAULT NULL,
                PRIMARY KEY (`id`), KEY `idx_scene` (`scene_id`)
            ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4");
            Db::execute("CREATE TABLE IF NOT EXISTS `{$prefix}iot_scene_log` (
                `id` int unsigned NOT NULL AUTO_INCREMENT,
                `scene_id` int unsigned NOT NULL DEFAULT '0',
                `trigger_type` varchar(16) NOT NULL DEFAULT '',
                `matched` tinyint(1) NOT NULL DEFAULT '0', `message` text,
                `create_at` int DEFAULT NULL,
                PRIMARY KEY (`id`), KEY `idx_scene` (`scene_id`), KEY `idx_create_at` (`create_at`)
            ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4");
            return true;
        } catch (\Throwable $e) {
            return false;
        }
    }

    /* ============================================================
     * 事件钩子入口（Broker::handlePublish / handlePubRel 调用）
     * ========================================================== */

    /**
     * 消息发布 → 评估所有启用场景的 device_state 触发器
     */
    public static function onMessagePublished(string $topic, string $payload): void
    {
        foreach (self::loadScenes() as $scene) {
            foreach ($scene['triggers'] as $trg) {
                if ($trg['type'] !== 'device_state' || !$trg['enabled']) {
                    continue;
                }
                $matched = false;
                $reason  = '';
                try {
                    if (!self::topicMatch($trg['topic'], $topic)) {
                        continue; // 主题不匹配不记日志
                    }
                    $matched = self::matchConditions($trg['condition_json'], $payload, $topic);
                    $reason  = $matched ? '条件命中' : '条件未满足';
                } catch (\Throwable $e) {
                    $reason = '评估异常: ' . $e->getMessage();
                }
                if ($matched) {
                    self::runScene($scene['id'], 'device_state', 'topic=' . $topic);
                } else {
                    self::writeLog($scene['id'], 'device_state', false, $reason);
                }
            }
        }
    }

    /* ============================================================
     * 定时触发（Broker onWorkerStart Timer 每分钟调用）
     * ========================================================== */

    public static function onTick(): void
    {
        $now = time();
        foreach (self::loadScenes() as $scene) {
            foreach ($scene['triggers'] as $trg) {
                if ($trg['type'] !== 'schedule' || !$trg['enabled'] || $trg['cron'] === '') {
                    continue;
                }
                if (self::cronMatch($trg['cron'], $now)) {
                    self::runScene($scene['id'], 'schedule', 'cron=' . $trg['cron']);
                }
            }
        }
    }

    /* ============================================================
     * 场景执行
     * ========================================================== */

    /**
     * 执行场景（App/后台手动 + 引擎内部）
     */
    public static function runScene(int $sceneId, string $triggerType = 'manual', string $message = ''): bool
    {
        $scene = self::findScene($sceneId);
        if (!$scene || !$scene['enabled']) {
            return false;
        }
        $done = 0;
        foreach ($scene['actions'] as $act) {
            try {
                if (self::runAction($act)) {
                    $done++;
                }
            } catch (\Throwable $e) {
                // 单动作失败不中断后续
            }
        }
        self::writeLog($sceneId, $triggerType, $done > 0,
            $message !== '' ? $message : ($done > 0 ? "执行 {$done} 个动作" : '无动作'));
        return $done > 0;
    }

    protected static function runAction(array $act): bool
    {
        switch ($act['type']) {
            case 'send_cmd':
                if ($act['device_uuid'] === '' || $act['payload_json'] === '') {
                    return false;
                }
                return Store::enqueueManual(
                    sprintf(DeviceService::TOPIC_CMD, $act['device_uuid']),
                    $act['payload_json'], 1, 0, 'scene'
                );
            case 'http':
                if ($act['topic'] === '') {
                    return false;
                }
                return self::httpPost($act['topic'], $act['payload_json']);
            case 'notify':
                $dev = $act['device_uuid'] !== '' ? DeviceService::findByUuid($act['device_uuid']) : null;
                $memberId = $dev ? (int) $dev['member_id'] : (int) ($act['scene_member_id'] ?? 0);
                if ($memberId <= 0) {
                    return false;
                }
                $title = $act['topic'] !== '' ? $act['topic'] : '场景通知';
                AlertService::add($memberId, 'scene', 2, $title,
                    mb_substr($act['payload_json'] !== '' ? $act['payload_json'] : '场景联动已执行', 0, 512));
                return true;
            default:
                return false;
        }
    }

    /** HTTP POST 回调（短超时，失败不影响主流程） */
    protected static function httpPost(string $url, string $body): bool
    {
        if (function_exists('curl_init')) {
            $ch = curl_init($url);
            curl_setopt_array($ch, [
                CURLOPT_POST           => true,
                CURLOPT_POSTFIELDS     => $body,
                CURLOPT_RETURNTRANSFER => true,
                CURLOPT_CONNECTTIMEOUT => 2,
                CURLOPT_TIMEOUT        => 3,
                CURLOPT_HTTPHEADER     => ['Content-Type: application/json'],
            ]);
            curl_exec($ch);
            $err = curl_errno($ch);
            curl_close($ch);
            return $err === 0;
        }
        return false;
    }

    /* ============================================================
     * 条件求值
     * ========================================================== */

    /** MQTT 主题通配符匹配（+/#） */
    public static function topicMatch(string $filter, string $topic): bool
    {
        if ($filter === '') {
            $filter = '/devices/+/state';
        }
        // MQTT 通配符转正则：+ 单层，# 多层
        $regex = preg_quote($filter, '#');
        $regex = str_replace(['\\+', '\\#'], ['[^/]+', '.*'], $regex);
        return (bool) preg_match('#^' . $regex . '$#', $topic);
    }

    /**
     * 条件 JSON 求值（全部满足才 true；空条件视为 true）
     * 支持 ref：引用其他设备影子字段（/devices/{uuid}/state 的 retain payload）
     */
    protected static function matchConditions(string $conditionJson, string $payload, string $topic): bool
    {
        $conds = json_decode($conditionJson, true);
        if (!is_array($conds) || !$conds) {
            return true;
        }
        $data = json_decode($payload, true);
        if (!is_array($data)) {
            $data = ['value' => $payload]; // 非 JSON payload 视为裸 value
        }
        foreach ($conds as $cond) {
            if (!is_array($cond)) {
                continue;
            }
            $field = (string) ($cond['field'] ?? '');
            $op    = (string) ($cond['op'] ?? 'eq');
            $value = $cond['value'] ?? null;
            $ref   = (string) ($cond['ref'] ?? '');
            $src   = $data;
            if ($ref !== '') {
                $shadow = DeviceService::shadow($ref);
                $parsed = json_decode((string) ($shadow['payload'] ?? ''), true);
                if (!is_array($parsed)) {
                    return false; // 引用影子不可用 → 不触发
                }
                $src = $parsed;
            }
            $actual = $field === '' ? ($src['value'] ?? null) : self::dig($src, $field);
            if (!self::compare($op, $actual, $value)) {
                return false;
            }
        }
        return true;
    }

    /**
     * 点分路径取值：dig(['pos'=>[['t'=>26]]], 'pos.0.t') = 26
     *
     * 报文改过三轮键名，场景条件是用户手写在 condition_json 里的，不能在设备升级后悄悄失效：
     *   ≤1.4.0  data.N.t / df / v / iv / vs.M
     *   v1.5.0  positions.N.temp / temp_diff / probes.M.{id,temp}、interval
     *   v1.6.0  positions.N.t / df / probes.M.[id, temp]（下标即位置序号、探头变二元组）
     *   v1.7.0  pos.N.t / df / pr.M.<分量下标>（**只是键名压短**，结构与语义同 v1.6.0）
     * 这里按「payload 里有没有 pos / positions 键」判版式，是新格式就把路径自动改写
     * 成当前线上词汇（v1.7.0）。⚠️ 库里既存场景的条件路径可能写成任一历史词汇
     * （data. / positions. / interval. / probes.），全靠 $map 一趟收敛到 pos. / iv. / pr. ——
     * 漏一条就会出现「路径取不到值 → 条件恒不成立」这种**静默**故障，
     * 所以每次改报文键名都必须同步这里（这是全项目唯一靠字符串路径取报文的地方）。
     * 两个迁不了的（路径取不到值 → 条件恒不成立，得人工改）：
     *   · `v`  —— v1.5.0 起字段已删（等价于「t !== null」）→ 改用 pos.N.t 的 exists/gt
     *   · `i`  —— v1.6.0 起位置序号就是数组下标，报文里没有对应字段了
     */
    protected static function dig(array $arr, string $path)
    {
        /* 「新式」= 带 pos（v1.7.0）或 positions（≥1.5.0）且不是旧式 data。
           旧式（≤1.4.0）没有 null 语义、词汇也是另一套，绝不能改写路径 */
        if ((array_key_exists('pos', $arr) || array_key_exists('positions', $arr))
            && !array_key_exists('data', $arr)) {
            $path = self::upgradeStatePath($path);
        }
        $cur = $arr;
        foreach (explode('.', $path) as $seg) {
            if (!is_array($cur) || !array_key_exists($seg, $cur)) {
                return null;
            }
            $cur = $cur[$seg];
        }
        return $cur;
    }

    /**
     * 旧 state 路径 → v1.6.0 词汇（只改名字与探头取法，语义不变）
     *
     * 目标形态：positions[下标] = {pin, t, df, probes[[id, temp]]}
     * 关键点：probes 从「对象数组」变成「二元组」，所以 probes.N 后面那一段
     *   要从**字段名**（temp/id）改成**分量下标**（1/0）。
     * 两趟走，顺序不能反：先把分量名换成下标，再改名 —— 否则 `probes.0.temp`
     *   会先被改名成 `probes.0.t`，第二趟就认不出它是"温度"还是"位置温度"了。
     */
    protected static function upgradeStatePath(string $path): string
    {
        $segs = explode('.', $path);

        /* 第一趟：探头部份（vs.N / probes.N / ids.N / pr.N）→ pr.N.<分量下标> */
        for ($k = 0; $k + 1 < count($segs); $k++) {
            $head = $segs[$k];
            if (!in_array($head, ['vs', 'probes', 'ids', 'pr'], true) || !ctype_digit((string) $segs[$k + 1])) {
                continue;
            }
            $tail = $segs[$k + 2] ?? null;
            if ($head === 'ids') {
                /* 旧写法 ids.N 取的就是身份本身 */
                $segs[$k] = 'pr';
                if ($tail === null || !ctype_digit((string) $tail)) {
                    array_splice($segs, $k + 2, 0, ['0']);
                }
                continue;
            }
            $segs[$k] = 'pr';
            if ($tail === 'temp' || $tail === 'id' || $tail === 't') {
                $segs[$k + 2] = ($tail === 'id') ? '0' : '1';   // 二元组 [身份, 温度]
            } elseif ($tail === null || !ctype_digit((string) $tail)) {
                /* `vs.N` 这种只顾到探头号的旧写法：当时取到的是温度 → 补上分量下标 1 */
                array_splice($segs, $k + 2, 0, ['1']);
            }
        }

        /* 第二趟：段名映射 —— 把所有历史词汇收敛到 v1.7.0 线上词汇
           （`t` / `df` 各版同名，天然不用改）。
           ⚠️ `positions`→`pos`、`interval`→`iv` 这两条是给**库里已存**的场景路径用的：
              它们是按 v1.5.0/v1.6.0 词汇写进 iot_scene 的，不改写就取不到值。 */
        $map = [
            'data'      => 'pos',
            'positions' => 'pos',
            'probes'    => 'pr',
            'vs'        => 'pr',
            'ids'       => 'pr',
            'temp'      => 't',
            'temp_diff' => 'df',
            'interval'  => 'iv',
        ];
        foreach ($segs as $k => $seg) {
            if (isset($map[$seg])) {
                $segs[$k] = $map[$seg];
            }
        }
        return implode('.', $segs);
    }

    protected static function compare(string $op, $actual, $expected): bool
    {
        if (is_numeric($actual) && is_numeric($expected)) {
            $actual = (float) $actual;
            $expected = (float) $expected;
        }
        switch ($op) {
            case 'eq':       return $actual == $expected;
            case 'neq':      return $actual != $expected;
            case 'gt':       return $actual > $expected;
            case 'gte':      return $actual >= $expected;
            case 'lt':       return $actual < $expected;
            case 'lte':      return $actual <= $expected;
            case 'exists':   return $actual !== null && $actual !== '';
            case 'contains': return is_string($actual) && strpos($actual, (string) $expected) !== false;
            default:         return false;
        }
    }

    /* ============================================================
     * cron 匹配（最小 5 段实现：分 时 日 月 周，支持 * 与数字）
     * ========================================================== */

    public static function cronMatch(string $cron, ?int $ts = null): bool
    {
        $ts = $ts ?? time();
        $parts = preg_split('/\s+/', trim($cron));
        if (count($parts) !== 5) {
            return false;
        }
        $minute = (int) date('i', $ts);
        $hour   = (int) date('G', $ts);
        $day    = (int) date('j', $ts);
        $month  = (int) date('n', $ts);
        $week   = (int) date('w', $ts);
        $fields = [$minute, $hour, $day, $month, $week];
        foreach ($parts as $i => $part) {
            if ($part === '*') {
                continue;
            }
            $allowed = [];
            foreach (explode(',', $part) as $seg) {
                $allowed[] = (int) $seg;
            }
            if (!in_array($fields[$i], $allowed, true)) {
                return false;
            }
        }
        return true;
    }

    /* ============================================================
     * 数据访问（内存缓存）
     * ========================================================== */

    /** 加载启用场景（含触发器/动作），TTL 缓存 */
    protected static function loadScenes(): array
    {
        $now = time();
        if ($now - self::$loadedAt < self::CACHE_TTL && self::$sceneCache) {
            return self::$sceneCache;
        }
        try {
            $scenes = Db::name('iot_scene')
                ->where('enabled', 1)
                ->order('id', 'asc')
                ->select()->toArray();
            $sceneIds = array_column($scenes, 'id');
            $triggers = $actions = [];
            if ($sceneIds) {
                $triggers = Db::name('iot_scene_trigger')
                    ->whereIn('scene_id', $sceneIds)
                    ->where('enabled', 1)
                    ->order('id', 'asc')
                    ->select()->toArray();
                $actions = Db::name('iot_scene_action')
                    ->whereIn('scene_id', $sceneIds)
                    ->order('sort', 'asc')
                    ->select()->toArray();
            }
            $byId = [];
            foreach ($triggers as $t) {
                $byId[(int) $t['scene_id']]['triggers'][] = $t;
            }
            foreach ($actions as $a) {
                $byId[(int) $a['scene_id']]['actions'][] = $a;
            }
            foreach ($scenes as &$s) {
                $sid = (int) $s['id'];
                $s['triggers'] = $byId[$sid]['triggers'] ?? [];
                $s['actions']  = $byId[$sid]['actions'] ?? [];
                foreach ($s['actions'] as &$a) {
                    $a['scene_member_id'] = (int) $s['member_id'];
                }
            }
            self::$sceneCache = $scenes;
            self::$loadedAt = $now;
        } catch (\Throwable $e) {
            self::$sceneCache = [];
            self::$loadedAt = $now;
        }
        return self::$sceneCache;
    }

    /** 单场景完整查询（不过滤 enabled） */
    public static function findScene(int $sceneId): ?array
    {
        try {
            $scene = Db::name('iot_scene')->where('id', $sceneId)->find();
            if (!$scene) {
                return null;
            }
            $scene['triggers'] = Db::name('iot_scene_trigger')
                ->where('scene_id', $sceneId)->order('id', 'asc')->select()->toArray();
            $scene['actions'] = Db::name('iot_scene_action')
                ->where('scene_id', $sceneId)->order('sort', 'asc')->select()->toArray();
            foreach ($scene['actions'] as &$a) {
                $a['scene_member_id'] = (int) $scene['member_id'];
            }
            return $scene;
        } catch (\Throwable $e) {
            return null;
        }
    }

    /** 写执行日志（防爆：单场景保留最近 500 条） */
    protected static function writeLog(int $sceneId, string $type, bool $matched, string $message): void
    {
        try {
            Db::name('iot_scene_log')->insert([
                'scene_id'     => $sceneId,
                'trigger_type' => $type,
                'matched'      => $matched ? 1 : 0,
                'message'      => mb_substr($message, 0, 500),
                'create_at'    => time(),
            ]);
            // 防爆清理
            $cnt = (int) Db::name('iot_scene_log')->where('scene_id', $sceneId)->count();
            if ($cnt > 500) {
                $ids = Db::name('iot_scene_log')->where('scene_id', $sceneId)
                    ->order('id', 'asc')->limit($cnt - 500)->column('id');
                if ($ids) {
                    Db::name('iot_scene_log')->whereIn('id', $ids)->delete();
                }
            }
        } catch (\Throwable $e) {
        }
    }

    /* ============================================================
     * CRUD（App / 后台）
     * ========================================================== */

    public static function save(array $data): int
    {
        self::ensureTables();
        $id = (int) ($data['id'] ?? 0);
        $now = time();
        $sceneData = [
            'member_id' => (int) ($data['member_id'] ?? 0),
            'title'     => mb_substr(trim((string) ($data['title'] ?? '')), 0, 64),
            'icon'      => mb_substr(trim((string) ($data['icon'] ?? '')), 0, 32),
            'enabled'   => !empty($data['enabled']) ? 1 : 0,
            'remark'    => mb_substr(trim((string) ($data['remark'] ?? '')), 0, 255),
        ];
        if ($sceneData['title'] === '') {
            throw new \InvalidArgumentException('场景名不能为空');
        }
        if ($id > 0) {
            $sceneData['update_at'] = $now;
            Db::name('iot_scene')->where('id', $id)->update($sceneData);
        } else {
            $sceneData['create_at'] = $now;
            $sceneData['update_at'] = $now;
            $id = (int) Db::name('iot_scene')->insertGetId($sceneData);
        }
        // 替换触发器与动作
        Db::name('iot_scene_trigger')->where('scene_id', $id)->delete();
        Db::name('iot_scene_action')->where('scene_id', $id)->delete();
        $triggers = $data['triggers'] ?? [];
        foreach ($triggers as $t) {
            $type = (string) ($t['type'] ?? 'device_state');
            Db::name('iot_scene_trigger')->insert([
                'scene_id'      => $id,
                'type'          => in_array($type, ['device_state', 'schedule', 'manual'], true) ? $type : 'device_state',
                'topic'         => mb_substr((string) ($t['topic'] ?? ''), 0, 255),
                'condition_json' => is_array($t['condition_json'] ?? null)
                    ? (string) json_encode($t['condition_json'], JSON_UNESCAPED_UNICODE)
                    : (string) ($t['condition_json'] ?? ''),
                'cron'          => mb_substr((string) ($t['cron'] ?? ''), 0, 64),
                'enabled'       => !empty($t['enabled']) ? 1 : 0,
                'create_at'     => $now,
            ]);
        }
        $actions = $data['actions'] ?? [];
        $sort = 0;
        foreach ($actions as $a) {
            $type = (string) ($a['type'] ?? 'send_cmd');
            Db::name('iot_scene_action')->insert([
                'scene_id'     => $id,
                'sort'         => $sort++,
                'type'         => in_array($type, ['send_cmd', 'http', 'notify'], true) ? $type : 'send_cmd',
                'device_uuid'  => mb_substr((string) ($a['device_uuid'] ?? ''), 0, 64),
                'payload_json' => is_array($a['payload_json'] ?? null)
                    ? (string) json_encode($a['payload_json'], JSON_UNESCAPED_UNICODE)
                    : (string) ($a['payload_json'] ?? ''),
                'topic'        => mb_substr((string) ($a['topic'] ?? ''), 0, 255),
                'create_at'    => $now,
            ]);
        }
        return $id;
    }

    public static function remove(int $sceneId, int $memberId = 0): void
    {
        $q = Db::name('iot_scene')->where('id', $sceneId);
        if ($memberId > 0) {
            $q->where('member_id', $memberId);
        }
        $q->delete();
        Db::name('iot_scene_trigger')->where('scene_id', $sceneId)->delete();
        Db::name('iot_scene_action')->where('scene_id', $sceneId)->delete();
    }

    public static function toggle(int $sceneId, int $enabled, int $memberId = 0): void
    {
        $q = Db::name('iot_scene')->where('id', $sceneId);
        if ($memberId > 0) {
            $q->where('member_id', $memberId);
        }
        $q->update(['enabled' => $enabled ? 1 : 0, 'update_at' => time()]);
    }

    public static function list(int $memberId = 0): array
    {
        $q = Db::name('iot_scene');
        if ($memberId > 0) {
            $q->where('member_id', $memberId);
        }
        $rows = $q->order('id', 'desc')->select()->toArray();
        foreach ($rows as &$r) {
            $r['trigger_count'] = (int) Db::name('iot_scene_trigger')->where('scene_id', $r['id'])->count();
            $r['action_count']  = (int) Db::name('iot_scene_action')->where('scene_id', $r['id'])->count();
        }
        return $rows;
    }

    public static function logs(int $sceneId, int $page = 1, int $size = 20): array
    {
        $q = Db::name('iot_scene_log')->where('scene_id', $sceneId);
        $total = (int) $q->count();
        $list = (clone $q)->order('id', 'desc')
            ->page(max(1, $page), min(100, max(1, $size)))
            ->select()->toArray();
        return ['list' => $list, 'total' => $total];
    }
}