repository와 subscribe까지 잘 됨

internal/app/flow/errors.go

@@ -0,0 +1,7 @@
+package flow
+
+import "errors"
+
+var (
+	ErrWeatherAlreadyExists = errors.New("weather already exists")
+)

internal/app/flow/flow.go

@@ -0,0 +1,47 @@
+package flow
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/neatflowcv/seven-skies/internal/pkg/domain"
+	"github.com/neatflowcv/seven-skies/internal/pkg/repository"
+	"github.com/oklog/ulid/v2"
+)
+
+type Flow struct {
+	repo repository.Repository
+}
+
+func NewFlow(repo repository.Repository) *Flow {
+	return &Flow{
+		repo: repo,
+	}
+}
+
+func (f *Flow) CreateWeather(ctx context.Context, weather *Weather) error {
+	id := ulid.Make().String()
+
+	domainWeather := domain.NewWeather(
+		id,
+		domain.WeatherSource(weather.Source),
+		weather.TargetDate,
+		weather.ForecastDate,
+		domain.WeatherCondition(weather.Condition),
+		domain.Temperature{
+			Value: domain.Celsius(weather.Temperature),
+		},
+	)
+
+	err := f.repo.CreateWeather(ctx, domainWeather)
+	if err != nil {
+		if errors.Is(err, repository.ErrWeatherAlreadyExists) {
+			return ErrWeatherAlreadyExists
+		}
+
+		return fmt.Errorf("error in create weather: %w", err)
+	}
+
+	return nil
+}

internal/app/flow/service.go

@@ -1,7 +0,0 @@
-package flow
-
-type Service struct {}
-
-func NewService() *Service {
-	return &Service{}
-}

internal/app/flow/weather.go

@@ -0,0 +1,11 @@
+package flow
+
+import "time"
+
+type Weather struct {
+	Source       string
+	TargetDate   time.Time
+	ForecastDate time.Time
+	Condition    string
+	Temperature  float64 // Celsius
+}