Add timezone support to /forecast/hourly endpoint

internal/adapters/inbound/httpapi/query_bind.go

@@ -5,6 +5,7 @@ package httpapi
 import (
 	"net/http"
 	"strings"
+	"time"
 
 	"gitea.maximumdirect.net/ejr/feedapi/bind"
 	"gitea.maximumdirect.net/ejr/weatherapi/internal/adapters/inbound/httpapi/presenter"
@@ -17,6 +18,7 @@ type queryRequest struct {
 type precisionQueryRequest struct {
 	Units     presenter.Units
 	Precision int
+	Timezone  *time.Location
 }
 
 func bindQuery(r *http.Request) (queryRequest, error) {
@@ -41,16 +43,29 @@ func bindQuery(r *http.Request) (queryRequest, error) {
 }
 
 func bindPrecisionQuery(r *http.Request) (precisionQueryRequest, error) {
+	return bindPrecisionQueryInternal(r, false)
+}
+
+func bindForecastPrecisionQuery(r *http.Request) (precisionQueryRequest, error) {
+	return bindPrecisionQueryInternal(r, true)
+}
+
+func bindPrecisionQueryInternal(r *http.Request, allowTimezone bool) (precisionQueryRequest, error) {
 	normalizeCommonQueryValue(r, "units")
 	normalizeCommonQueryValue(r, "format")
 	normalizeCommonQueryValue(r, "precision")
 
+	allowedExtra := []string{"precision"}
+	if allowTimezone {
+		allowedExtra = append(allowedExtra, "tz", "TZ")
+	}
+
 	common, err := bind.CommonQueryParams(r, bind.QueryPolicy{
 		AllowUnits:    true,
 		AllowFormat:   true,
 		DefaultUnits:  string(presenter.UnitsMetric),
 		RejectUnknown: true,
-	}, "precision")
+	}, allowedExtra...)
 	if err != nil {
 		return precisionQueryRequest{}, err
 	}
@@ -70,5 +85,18 @@ func bindPrecisionQuery(r *http.Request) (precisionQueryRequest, error) {
 	if units == "" {
 		units = presenter.UnitsMetric
 	}
-	return precisionQueryRequest{Units: units, Precision: precision}, nil
+
+	var tz *time.Location
+	if allowTimezone {
+		tz, err = parseTimezoneQuery(r)
+		if err != nil {
+			return precisionQueryRequest{}, err
+		}
+	}
+
+	return precisionQueryRequest{
+		Units:     units,
+		Precision: precision,
+		Timezone:  tz,
+	}, nil
 }