handler 추출

cmd/openweather/handler.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"log"
+	"time"
+
+	"github.com/neatflowcv/seven-skies/internal/pkg/broker"
+	"github.com/neatflowcv/seven-skies/internal/pkg/domain"
+	"github.com/neatflowcv/seven-skies/internal/pkg/openweather"
+)
+
+type Handler struct {
+	broker broker.Broker
+	key    string
+	lat    float64
+	lon    float64
+}
+
+func NewHandler(broker broker.Broker, key string, lat float64, lon float64) *Handler {
+	return &Handler{
+		broker: broker,
+		key:    key,
+		lat:    lat,
+		lon:    lon,
+	}
+}
+
+func (h *Handler) Handle(ctx context.Context) error {
+	log.Println("get forecast")
+
+	forecast, err := openweather.Forecast(ctx, h.key, h.lat, h.lon)
+	if err != nil {
+		log.Println("error in get forecast", err)
+
+		return err
+	}
+
+	log.Println("get forecast successfully", forecast)
+
+	for _, list := range forecast.List {
+		weatherEvent := domain.WeatherEvent{
+			Date:        time.Unix(int64(list.Dt), 0),
+			Condition:   decideCondition(list.Weather[0].Main),
+			Temperature: &domain.Temperature{Value: domain.Celsius(list.Main.Temp)},
+			High:        &domain.Temperature{Value: domain.Celsius(list.Main.TempMax)},
+			Low:         &domain.Temperature{Value: domain.Celsius(list.Main.TempMin)},
+		}
+
+		message, err := json.Marshal(weatherEvent)
+		if err != nil {
+			log.Println("error in marshal weather event", err)
+
+			continue
+		}
+
+		err = h.broker.Publish(ctx, "SEVEN_SKIES_SUBJECT.OPENWEATHER", message)
+		if err != nil {
+			log.Println("error in publish weather event", err)
+
+			continue
+		}
+	}
+
+	return nil
+}
+
+func decideCondition(main string) domain.WeatherCondition {
+	switch main {
+	case "Thunderstorm", "Drizzle", "Rain":
+		return domain.WeatherConditionRain
+
+	case "Snow":
+		return domain.WeatherConditionSnow
+
+	case "Mist", "Smoke", "Haze", "Dust", "Fog", "Sand", "Ash", "Squall", "Tornado", "Clouds":
+		return domain.WeatherConditionCloudy
+
+	case "Clear":
+		return domain.WeatherConditionClear
+
+	default:
+		return domain.WeatherConditionUnknown
+	}
+}