add service b

service_b/go.mod

@@ -1,3 +1,7 @@
 module serviceb
 
 go 1.25.2
+
+replace pkg => ../pkg
+
+require pkg v0.0.0-00010101000000-000000000000

service_b/internal/app/app.go

@@ -0,0 +1,3 @@
+package app
+
+type H map[string]any

service_b/internal/domains/meteo/domain.go

@@ -0,0 +1,90 @@
+package meteo
+
+import (
+	"errors"
+	"time"
+)
+
+type MeteoDataPerDay struct {
+	MaxTemp    float32 `json:"max_temp"`
+	MinTemp    float32 `json:"min_temp"`
+	AvgTemp    float32 `json:"avg_temp"`
+	Rainfall   float32 `json:"rainfall"`
+	Cloudiness int     `json:"cloudiness"`
+}
+
+func (mtpd *MeteoDataPerDay) ConvertValue() {
+	mtpd.MaxTemp = mtpd.MaxTemp*9/5 + 32
+	mtpd.MinTemp = mtpd.MinTemp*9/5 + 32
+	mtpd.AvgTemp = mtpd.AvgTemp*9/5 + 32
+}
+
+type Rolling7Data struct {
+	AvgTemp       float32 `json:"avg_temp"`
+	AvgCloudiness int     `json:"avg_cloudiness"`
+	SumRainfall   float32 `json:"sum_rainfall"`
+}
+
+type MeteoData struct {
+	Location string             `json:"location"`
+	Unit     Unit               `json:"unit"`
+	From     string             `json:"from"`
+	Days     *[]MeteoDataPerDay `json:"days,omitempty"`
+	Rolling7 *Rolling7Data      `json:"rolling7,omitempty"`
+}
+
+type Unit string
+
+const (
+	UnitC Unit = "C"
+	UnitF Unit = "F"
+)
+
+type Agg string
+
+const (
+	AggDaily    Agg = "daily"
+	AggRolling7 Agg = "rolling7"
+)
+
+type GetMeteoData struct {
+	Location string
+	Date     string
+	Days     int
+	Unit     Unit
+	Agg      Agg
+}
+
+func (mt *GetMeteoData) Validate() error {
+	if mt.Date == "" {
+		mt.Date = time.Now().Format("2006-01-02")
+	}
+
+	if _, err := time.Parse("2006-01-02", mt.Date); err != nil {
+		return ErrMissingOrInvalidDate
+	}
+
+	if mt.Days == 0 {
+		mt.Days = 5
+	}
+	if mt.Days < 1 || mt.Days > 10 {
+		return ErrInvalidDays
+	}
+
+	if mt.Unit == "" {
+		mt.Unit = UnitC
+	}
+
+	if mt.Agg == "" {
+		mt.Agg = AggDaily
+	}
+
+	return nil
+}
+
+var (
+	ErrCityNotFound         = errors.New("city not found")
+	ErrReadingData          = errors.New("error reading data")
+	ErrMissingOrInvalidDate = errors.New("missing or invalid date")
+	ErrInvalidDays          = errors.New("days must be between 1 and 10")
+)

service_b/internal/domains/meteo/handlers.go

@@ -0,0 +1,40 @@
+package meteo
+
+import (
+	"log/slog"
+	"net/http"
+	"pkg"
+	"serviceb/internal/app"
+)
+
+type Handler struct {
+	pkg.BaseHandler
+	s *Service
+}
+
+func NewHandler(service *Service) *Handler {
+	return &Handler{
+		s: service,
+	}
+}
+
+func (h *Handler) GetMeteoData(w http.ResponseWriter, r *http.Request) {
+	locationValue := r.PathValue("city")
+	queryParams := r.URL.Query()
+
+	params := GetMeteoData{
+		Location: locationValue,
+		Date:     queryParams.Get("date"),
+		Days:     h.ParamToInt(queryParams.Get("days"), 5),
+		Unit:     Unit(queryParams.Get("unit")),
+		Agg:      Agg(queryParams.Get("agg")),
+	}
+
+	if err := params.Validate(); err != nil {
+		slog.Error("error validating struct", "error", err)
+		h.ToJSON(w, http.StatusBadRequest, app.H{"error": err.Error()})
+	}
+
+	slog.Info("loc value", "value", params)
+	return
+}

service_b/internal/domains/meteo/router.go

@@ -0,0 +1,7 @@
+package meteo
+
+import "net/http"
+
+func RegisterRoutes(mux *http.ServeMux, handler *Handler) {
+	mux.HandleFunc("GET /weather/{city}", handler.GetMeteoData)
+}

service_b/internal/domains/meteo/service.go

@@ -0,0 +1,22 @@
+package meteo
+
+import (
+	"context"
+	"sync"
+)
+
+type inMemory struct {
+	data map[string]MeteoData
+	mu   *sync.RWMutex
+}
+type Service struct {
+	inMemory
+}
+
+func NewService() *Service {
+	return &Service{}
+}
+
+func (s *Service) GetWeatherByCity(ctx context.Context, params GetMeteoData) ([]MeteoData, error) {
+	return []MeteoData{}, nil
+}

service_b/internal/router/router.go

@@ -0,0 +1,16 @@
+package router
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func SetupRoutes() *http.ServeMux {
+	mux := http.NewServeMux()
+
+	mux.HandleFunc("GET /", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "hello world")
+	})
+
+	return mux
+}

service_b/server/main.go

@@ -2,17 +2,31 @@ package main
 
 import (
 	"fmt"
-	"log"
+	"log/slog"
 	"net/http"
+	"serviceb/internal/domains/meteo"
+	"serviceb/internal/router"
+	"time"
 )
 
 func main() {
-	mux := http.NewServeMux()
+	mux := router.SetupRoutes()
 
-	mux.HandleFunc("GET /hello", func(w http.ResponseWriter, r *http.Request) {
-		log.Println("Received request on /hello endpoint")
-		fmt.Fprintf(w, "Hello world from service B")
-	})
+	meteoService := meteo.NewService()
+	meteoHandler := meteo.NewHandler(meteoService)
+	meteo.RegisterRoutes(mux, meteoHandler)
 
-	http.ListenAndServe(":8090", mux)
+	server := http.Server{
+		Addr:              ":8090",
+		Handler:           mux,
+		ReadTimeout:       15 * time.Second,
+		WriteTimeout:      15 * time.Second,
+		IdleTimeout:       60 * time.Second,
+		ReadHeaderTimeout: 5 * time.Second,
+	}
+
+	slog.Info("server starting on :8090")
+	if err := server.ListenAndServe(); err != nil {
+		panic(fmt.Sprintf("server failed, error %s", err))
+	}
 }