add simple fetch to another service

service_b/internal/domains/meteo/handlers.go

@@ -33,8 +33,16 @@ func (h *Handler) GetMeteoData(w http.ResponseWriter, r *http.Request) {
 	if err := params.Validate(); err != nil {
 		slog.Error("error validating struct", "error", err)
 		h.ToJSON(w, http.StatusBadRequest, app.H{"error": err.Error()})
+		return
 	}
 
-	slog.Info("loc value", "value", params)
-	return
+	data, err := h.s.GetWeatherByCity(r.Context(), params)
+	if err != nil {
+		slog.Error("error", "err", err)
+		h.ToJSON(w, http.StatusInternalServerError, app.H{"error": err})
+		return
+	}
+
+	slog.Info("data retrieved", "location", params.Location)
+	h.ToJSON(w, http.StatusOK, data)
 }

service_b/internal/domains/meteo/service.go

@@ -2,12 +2,17 @@ package meteo
 
 import (
 	"context"
+	"fmt"
+	"log/slog"
+	"net/http"
 	"sync"
+	"time"
 )
 
 type inMemory struct {
-	data map[string]MeteoData
-	mu   *sync.RWMutex
+	data   any
+	mu     *sync.RWMutex
+	expiry time.Time
 }
 type Service struct {
 	inMemory
@@ -18,5 +23,25 @@ func NewService() *Service {
 }
 
 func (s *Service) GetWeatherByCity(ctx context.Context, params GetMeteoData) ([]MeteoData, error) {
+	fromDate, err := time.Parse("2006-01-02", params.Date)
+	if err != nil {
+		return nil, err
+	}
+	toDate := fromDate.AddDate(0, 0, params.Days-1)
+
+	url := fmt.Sprintf("http://localhost:8080/data?city=%s&from=%s&to=%s",
+		params.Location, params.Date, toDate.Format("2006-01-02"))
+
+	resp, err := http.Get(url)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	// TODO add backoff
+	// TODO add ristretto
+
+	slog.Info("fetched data", "data", resp)
+
 	return []MeteoData{}, nil
 }