package controllers

import (
	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
	"goiot-cronapi/common"
	"goiot-cronapi/global/orm"
	"goiot-cronapi/global/redis"
	"goiot-cronapi/models"
	"goiot-cronapi/pkg/logger"
	"goiot-cronapi/services"
	"time"
)

// WeatherSample
// 每15分钟采样一次天气接口数据
// 从Redis中取出所有盒子对应的项目地区的天气信息
// 如果取到了直接存入数据库中
// 如果没取到则从接口拉取再同步到Redis, 最后再存到数据库中
func WeatherSample(c *gin.Context) {

	var err error

	// 获取所有在线的盒子列表
	areaList := services.GetAreaList(orm.Eloquent)
	logger.Info("采样城市数", zap.Int("NUM", len(areaList)))

	for _, area := range areaList {
		weather := services.GetWeatherFromRedis(redis.Cacher, area.CityId)
		if weather.CityId <= 0 || len(weather.Temp) <= 0 || len(weather.Humidity) <= 0 {
			go saveWeatherData(area)
			continue
		}
		// 直接存到数据库中
		if err = saveWeatherToDB(weather); err != nil {
			continue
		}
	}

	common.ReturnSuccess(c, nil)
}

// 请求天气数据并存入到Redis和数据库中
func saveWeatherData(area *models.AreaModel) {
	// 从墨迹接口拉取天气数据
	condition, err := services.RequestCondition(area.CityId)
	if err == nil {
		if aqi, aqiErr := services.RequestAqi(area.CityId); aqiErr == nil {
			weather := models.Weather{
				CityId:    area.CityId,
				Temp:      condition.Data.Condition.Temp,
				Humidity:  condition.Data.Condition.Humidity,
				Condition: condition.Data.Condition.Condition,
				Aqi:       aqi.Data.Aqi.Value,
				AqiLevel:  services.GetAirLevel(aqi.Data.Aqi.Value),
				PM25:      aqi.Data.Aqi.PM25,
				Province:  area.Province,
				City:      area.City,
				Area:      area.District,
				Icon:      services.GetWeatherIcon(condition.Data.Condition.Condition),
				Created:   time.Now().Format("2006-01-02 15:04:05"),
			}
			if len(weather.Area) <= 0 {
				weather.Area = area.Area
			}
			// 保存到Redis中
			if err = weather.SaveToRedis(redis.Cacher); err != nil {
				logger.Info("更新Redis失败", zap.String("Error", err.Error()))
			}
			// 同时保存到数据库中
			if err = saveWeatherToDB(weather); err != nil {
				logger.Info("更新DB失败", zap.String("Error", err.Error()))
			}
		}
	}
}

func saveWeatherToDB(w models.Weather) error {
	sql := "INSERT INTO btk_runstat_weather(cityId, temp, humidity, pm25) VALUES(?, ?, ?, ?)"
	return orm.Eloquent.Exec(sql, w.CityId, w.Temp, w.Humidity, w.PM25).Error
}