Refactored the application structure to better separate concerns between files and packages

internal/app/service.go

@@ -0,0 +1,42 @@
+// service.go defines application read ports and use-case orchestration.
+// Layer: internal/app core business-facing API.
+package app
+
+import (
+	"context"
+
+	"gitea.maximumdirect.net/ejr/weatherfeeder/model"
+)
+
+// Repository defines outbound data access used by weatherapi use cases.
+type Repository interface {
+	LatestObservation(ctx context.Context) (*model.WeatherObservation, error)
+	LatestHourlyForecast(ctx context.Context) (*model.WeatherForecastRun, error)
+	LatestAlertRun(ctx context.Context) (*model.WeatherAlertRun, error)
+	CurrentConditions(ctx context.Context, observationWindowMinutes int) (*CurrentConditions, error)
+}
+
+// Service provides weather read use-cases.
+type Service struct {
+	repo Repository
+}
+
+func NewService(repo Repository) *Service {
+	return &Service{repo: repo}
+}
+
+func (s *Service) LatestObservation(ctx context.Context) (*model.WeatherObservation, error) {
+	return s.repo.LatestObservation(ctx)
+}
+
+func (s *Service) LatestHourlyForecast(ctx context.Context) (*model.WeatherForecastRun, error) {
+	return s.repo.LatestHourlyForecast(ctx)
+}
+
+func (s *Service) LatestAlertRun(ctx context.Context) (*model.WeatherAlertRun, error) {
+	return s.repo.LatestAlertRun(ctx)
+}
+
+func (s *Service) CurrentConditions(ctx context.Context) (*CurrentConditions, error) {
+	return s.repo.CurrentConditions(ctx, ObservationWindowMinutesDefault)
+}