<?php
	
	namespace app\api\controller;
	
	use app\common\model\device\Device;
	use app\common\model\land\Land;
	use app\common\model\land\LandDevice;
	use think\facade\Db;
	use think\response\Json;
	
	class DeviceController extends BaseApiController
	{
		//绑定设备
		public function bind(): Json
		{
			$params = $this->request->post(['land_id','device_code']);
			if(empty($params['land_id']) || empty($params['device_code'])) {
				return $this->fail('缺少必要参数');
			}
			$land = Land::where('id',$params['land_id'])->findOrEmpty();
			if($land->isEmpty()){
				return $this->fail('土地信息错误');
			}
			$device = Device::where('code',$params['device_code'])->findOrEmpty();
			if($device->isEmpty()){
				return $this->fail('设备不存在');
			}
			if($device['is_bind'] == 2){
				return $this->fail('当前设备已被绑定');
			}
			$landDevice = LandDevice::where('land_id',$land['id'])->where('device_type',$device['type'])->findOrEmpty();
			if(!$landDevice->isEmpty()){
				$msg = $device['type'] == 1 ? '土壤监测设备' : ($device['type'] == 2 ? '环境监测设备' : '视频监控设备');
				return $this->fail('该土地已绑定'.$msg);
			}
			Db::transaction(function()use($land,$device) {
				Device::where('id',$device['id'])->update([
					'is_bind' => 2,
					'user_id' => $land['user_id'],
					'update_time' => time()
				]);
				LandDevice::create([
					'land_id' => $land['id'],
					'device_id' => $device['id'],
					'device_type' => $device['type'],
					'create_time' => time(),
					'update_time' => time()
				]);
			});
			return $this->success('设备绑定成功');
		}
	}