<?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\controller\api;

use think\facade\Db;
use addon\iot\service\Store;
use addon\iot\service\DeviceService;
use addon\iot\service\ShareService;
use addon\iot\service\TicketService;

/**
 * App 端设备域 API（需框架会员 JWT 登录）
 * 路由前缀：/iot/api/client/...
 *
 * 2026-09-18 按功能域拆分后本控制器只保留「接入层」：连接/设备绑定/共享/
 * 影子/命令 —— 全品类共用（品类无关）。传感器配置/曲线/日志/告警在 Monitor，
 * 场景/分组在 Scene，OTA 在 Ota。共用会员取数在 ClientBase。
 */
class Client extends ClientBase
{
    /** 免登录公开接口（设备侧调用，非会员） */
    protected $noNeedLogin = ['deviceActivate'];
    protected $noNeedVerify = ['deviceActivate'];

    /**
     * 我的设备 / 连接列表
     * GET /iot/api/client/devices
     */
    public function devices()
    {
        $account = $this->memberAccount();
        if ($account === '') {
            return $this->result->apiError('无法获取当前会员账号');
        }
        $list = Db::name('iot_connection')
            ->where('username', $account)
            ->order('update_at', 'desc')
            ->limit(200)
            ->field('client_id,username,ip,status,create_at,update_at')
            ->select()
            ->toArray();
        return $this->result->setCount(count($list))->apiSuccess($list);
    }

    /**
     * 我的订阅主题列表
     * GET /iot/api/client/subscriptions
     */
    public function subscriptions()
    {
        $account = $this->memberAccount();
        if ($account === '') {
            return $this->result->apiError('无法获取当前会员账号');
        }
        $clientIds = Db::name('iot_connection')
            ->where('username', $account)
            ->column('client_id');
        $list = [];
        if ($clientIds) {
            $list = Db::name('iot_topic')
                ->whereIn('client_id', $clientIds)
                ->order('id', 'desc')
                ->field('client_id,topic,qos,create_at')
                ->select()
                ->toArray();
        }
        return $this->result->apiSuccess(['list' => $list, 'total' => count($list)]);
    }

    /**
     * 发布消息（服务端代发，强制命名空间隔离）
     * POST /iot/api/client/publish
     * param: topic, payload, qos(0/1/2), retain(0/1)
     */
    public function publish()
    {
        $account = $this->memberAccount();
        if ($account === '') {
            return $this->result->apiError('无法获取当前会员账号');
        }
        $topic   = trim((string) $this->request->post('topic', ''));
        $payload = (string) $this->request->post('payload', '');
        $qos     = (int) $this->request->post('qos', 0);
        $retain  = (int) $this->request->post('retain', 0);

        if ($topic === '' || $topic[0] === '$') {
            return $this->result->apiError('主题不能为空，且禁止发布到 $SYS 等系统主题');
        }
        // 命名空间隔离：topic 必须以 {username}/ 开头，避免越权发到他人主题
        $prefix = $account . '/';
        if (strncmp($topic, $prefix, strlen($prefix)) !== 0) {
            return $this->result->apiError("主题必须以 {$prefix} 开头（命名空间隔离）");
        }
        if (!in_array($qos, [0, 1, 2], true)) {
            $qos = 0;
        }
        $ok = Store::enqueueManual($topic, $payload, $qos, $retain, 'app');
        if (!$ok) {
            return $this->result->apiError('发布失败，请稍后重试');
        }
        return $this->result->apiSuccess(['topic' => $topic]);
    }

    /* ============================================================
     * 智能设备绑定（华为式：激活与认领分离）
     * 绑定与激活分离：设备先入云激活领凭证（deviceActivate，设备侧调），
     *   用户再扫码 SN + 配对码绑定（bindDevice，认领归属）。
     * 连接约定：设备 MQTT username=clientId=uuid，密码=激活时下发的 secret
     * Topic：/devices/{uuid}/state（设备上报·影子） /devices/{uuid}/cmd（下发命令）
     * ========================================================== */

    /**
     * 绑定设备（用户认领：扫码 SN + 配对码，华为式）
     * 设备已激活（uuid+secret 已签发）→ 绑定仅建立归属，凭证不变；
     * 设备未激活（无配对码的老设备）→ 兼容米家式：绑定即激活
     * POST /iot/api/client/bindDevice
     * param: sn(必填), pair_code(设备设置了配对码则必填), title, model, room
     */
    public function bindDevice()
    {
        $uid = $this->memberId();
        if ($uid <= 0) {
            return $this->result->apiError('未登录');
        }
        $sn       = trim((string) $this->request->post('sn', ''));
        $pairCode = trim((string) $this->request->post('pair_code', ''));
        $title    = trim((string) $this->request->post('title', ''));
        $model    = trim((string) $this->request->post('model', ''));
        $room     = trim((string) $this->request->post('room', ''));
        try {
            $res = DeviceService::bind($sn, $uid, $title, $model, $room, $pairCode);
        } catch (\Throwable $e) {
            return $this->result->apiError($e->getMessage());
        }
        return $this->result->apiSuccess($res);
    }

    /**
     * 设备入云激活（华为式，设备侧调用，无需会员登录）
     * 设备出厂预置 sn + activate_token，首次联网调此接口领取正式连接凭证 uuid/secret（明文仅此一次返回）
     * POST /iot/api/deviceActivate
     * param: sn(必填), token(必填，后台预登记生成的激活令牌)
     * 幂等：已激活设备重复调用返回激活状态但不再次下发 secret（如需换凭证走 resetSecret）
     */
    public function deviceActivate()
    {
        $sn    = trim((string) $this->request->post('sn', ''));
        $token = trim((string) $this->request->post('token', ''));
        try {
            $res = DeviceService::activate($sn, $token);
        } catch (\Throwable $e) {
            return $this->result->apiError($e->getMessage());
        }
        return $this->result->apiSuccess($res);
    }

    /**
     * 我的设备列表（主人 + 共享给我，role 区分 owner/shared，含在线状态 + 影子，剔除密钥）
     * GET /iot/api/client/myDevices
     */
    public function myDevices()
    {
        $uid = $this->memberId();
        if ($uid <= 0) {
            return $this->result->apiError('未登录');
        }
        $list = DeviceService::visibleDevices($uid);

        return $this->result->setCount(count($list))->apiSuccess($list);
    }

    /**
     * 共享设备给其他会员（仅主人可操作，华为式家庭授权）
     * POST /iot/api/client/shareDevice
     * param: device_id(必填), account(被共享者会员账号/手机号), perm(1只读 2可控制，默认2)
     */
    public function shareDevice()
    {
        $uid = $this->memberId();
        if ($uid <= 0) {
            return $this->result->apiError('未登录');
        }
        $deviceId  = (int) $this->request->post('device_id', 0);
        $account   = trim((string) $this->request->post('account', ''));
        $perm      = (int) $this->request->post('perm', ShareService::PERM_CTRL);
        if ($deviceId <= 0 || $account === '') {
            return $this->result->apiError('设备与对方账号必填');
        }
        // 按账号查被共享会员（member_user 主键 uid）
        $target = Db::name('member_user')->where('account', $account)->find();
        if (!$target || empty($target['uid'])) {
            return $this->result->apiError('对方账号不存在');
        }
        try {
            $res = ShareService::share($deviceId, $uid, (int) $target['uid'], $perm);
        } catch (\Throwable $e) {
            return $this->result->apiError($e->getMessage());
        }
        return $this->result->apiSuccess($res);
    }

    /**
     * 撤销共享（仅主人可操作）
     * POST /iot/api/client/revokeShare
     * param: device_id, member_id
     */
    public function revokeShare()
    {
        $uid = $this->memberId();
        if ($uid <= 0) {
            return $this->result->apiError('未登录');
        }
        $deviceId = (int) $this->request->post('device_id', 0);
        $memberId = (int) $this->request->post('member_id', 0);
        if ($deviceId <= 0 || $memberId <= 0) {
            return $this->result->apiError('参数无效');
        }
        try {
            ShareService::revoke($deviceId, $uid, $memberId);
        } catch (\Throwable $e) {
            return $this->result->apiError($e->getMessage());
        }
        return $this->result->apiSuccess('已撤销共享');
    }

    /**
     * 某设备的共享成员列表（主人管理页）
     * GET /iot/api/client/shareList?device_id=1
     */
    public function shareList()
    {
        $uid = $this->memberId();
        if ($uid <= 0) {
            return $this->result->apiError('未登录');
        }
        $deviceId = (int) $this->request->get('device_id', 0);
        if ($deviceId <= 0) {
            return $this->result->apiError('参数无效');
        }
        $dev = DeviceService::findById($deviceId);
        if (!$dev || (int) $dev['member_id'] !== $uid) {
            return $this->result->apiError('设备不存在或无权操作');
        }
        $list = ShareService::shareList($deviceId, $uid);
        return $this->result->apiSuccess(['list' => $list, 'total' => count($list)]);
    }

    /**
     * 解绑设备
     * POST /iot/api/client/unbindDevice
     * param: uuid
     */
    public function unbindDevice()
    {
        $uid  = $this->memberId();
        $uuid = trim((string) $this->request->post('uuid', ''));
        if ($uid <= 0) {
            return $this->result->apiError('未登录');
        }
        try {
            DeviceService::unbind($uuid, $uid);
        } catch (\Throwable $e) {
            return $this->result->apiError($e->getMessage());
        }
        return $this->result->apiSuccess('解绑成功，设备可被重新绑定（密钥将重置）');
    }

    /**
     * 重置设备密钥（旧密钥立即作废，返回新明文一次）
     * POST /iot/api/client/resetSecret
     * param: uuid
     */
    public function resetSecret()
    {
        $uid  = $this->memberId();
        $uuid = trim((string) $this->request->post('uuid', ''));
        if ($uid <= 0) {
            return $this->result->apiError('未登录');
        }
        try {
            $res = DeviceService::resetSecret($uuid, $uid);
        } catch (\Throwable $e) {
            return $this->result->apiError($e->getMessage());
        }
        return $this->result->apiSuccess($res);
    }

    /**
     * 换取 MQTT 一次性连接凭证（ticket）
     * App 每次建立/重连 MQTT 前调用；连接时 username=会员账号（返回 account）、password=ticket。
     * 凭证默认 60s 有效，过期失效；不直接使用会员明文密码，防反编译泄露。
     * POST /iot/api/client/mqttTicket
     */
    public function mqttTicket()
    {
        $uid = $this->memberId();
        if ($uid <= 0) {
            return $this->result->apiError('未登录');
        }
        $account = $this->memberAccount();
        if ($account === '') {
            return $this->result->apiError('无法获取当前会员账号');
        }
        // ACL 自愈：ACL 是生成时快照，后来新增的自动规则（如 /status 在线态订阅）不会补到老设备上，
        // 老用户升级 App 后会订阅被拒。换 ticket 是每次连接必经之路，在此顺手重建，幂等且代价极小。
        try {
            DeviceService::resyncMemberAcl($uid);
            ShareService::resyncMember($uid);
        } catch (\Throwable $e) {
        }
        $ticket = TicketService::issue($uid, $account);
        return $this->result->apiSuccess([
            'ticket'     => $ticket,
            'account'    => $account,
            'expire_in'  => TicketService::TTL,
            'expires_at' => time() + TicketService::TTL,
        ]);
    }

    /**
     * 向绑定的设备下发命令
     * POST /iot/api/client/sendCommand
     * param: uuid, payload(JSON 字符串), qos(可选0/1/2)
     */
    public function sendCommand()
    {
        $uid = $this->memberId();
        if ($uid <= 0) {
            return $this->result->apiError('未登录');
        }
        $uuid    = trim((string) $this->request->post('uuid', ''));
        $payload = (string) $this->request->post('payload', '');
        $qos     = (int) $this->request->post('qos', 0);
        if ($uuid === '') {
            return $this->result->apiError('设备uuid不能为空');
        }
        if ($payload === '') {
            return $this->result->apiError('命令内容不能为空');
        }
        $dev = DeviceService::findByUuid($uuid);
        if (!$dev) {
            return $this->result->apiError('设备不存在');
        }
        if (!ShareService::canAccess($uuid, $uid, ShareService::PERM_CTRL)) {
            return $this->result->apiError('无权控制该设备');
        }
        if (!in_array($qos, [0, 1, 2], true)) {
            $qos = 0;
        }
        $ok = Store::enqueueManual(sprintf(DeviceService::TOPIC_CMD, $uuid), $payload, $qos, 0, 'app');
        if (!$ok) {
            return $this->result->apiError('命令下发失败，请稍后重试');
        }
        return $this->result->apiSuccess(['uuid' => $uuid, 'topic' => sprintf(DeviceService::TOPIC_CMD, $uuid)]);
    }

    /**
     * 读取设备状态（影子：最后上报的 retain 消息 + 在线状态）
     * GET /iot/api/client/deviceState?uuid=xxx
     */
    public function deviceState()
    {
        $uid  = $this->memberId();
        $uuid = trim((string) $this->request->get('uuid', ''));
        if ($uid <= 0) {
            return $this->result->apiError('未登录');
        }
        $dev = DeviceService::findByUuid($uuid);
        if (!$dev) {
            return $this->result->apiError('设备不存在');
        }
        if (!ShareService::canAccess($uuid, $uid, ShareService::PERM_VIEW)) {
            return $this->result->apiError('无权查看该设备');
        }
        return $this->result->apiSuccess([
            'uuid'   => $uuid,
            'online' => DeviceService::isOnline($uuid),
            'shadow' => DeviceService::shadow($uuid),
        ]);
    }
}