add service b

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")
+)