Added a location block to the data package

internal/briefing/package.go

@@ -31,6 +31,7 @@ type Metadata struct {
 	Units            string                   `json:"units"`
 	Timezone         string                   `json:"timezone"`
 	ValidPeriod      timeutil.Period          `json:"validPeriod"`
+	Location         *LocationContext         `json:"location,omitempty"`
 	SourceLocationID string                   `json:"sourceLocationId,omitempty"`
 	SourceLocation   string                   `json:"sourceLocation,omitempty"`
 	Sources          []SourceMetadata         `json:"sources,omitempty"`
@@ -38,6 +39,13 @@ type Metadata struct {
 	Alerts           *AlertStatus             `json:"alerts,omitempty"`
 }
 
+type LocationContext struct {
+	ID       string `json:"id,omitempty"`
+	Name     string `json:"name,omitempty"`
+	Region   string `json:"region,omitempty"`
+	Timezone string `json:"timezone,omitempty"`
+}
+
 type SourceMetadata struct {
 	Name       string                   `json:"name"`
 	Endpoint   string                   `json:"endpoint,omitempty"`
@@ -61,6 +69,7 @@ type BuildContext struct {
 	Bundle   *forecast.Bundle
 	Units    string
 	Timezone string
+	Location *LocationContext
 }
 
 func BuildMetadata(ctx BuildContext) Metadata {
@@ -76,6 +85,7 @@ func BuildMetadata(ctx BuildContext) Metadata {
 		Units:            ctx.Units,
 		Timezone:         ctx.Timezone,
 		ValidPeriod:      metadata.ValidPeriod,
+		Location:         copyLocation(ctx.Location),
 		SourceLocationID: sourceLocationID,
 		SourceLocation:   sourceLocation,
 		Sources:          sourceMetadata(ctx.Bundle),
@@ -84,6 +94,14 @@ func BuildMetadata(ctx BuildContext) Metadata {
 	}
 }
 
+func copyLocation(location *LocationContext) *LocationContext {
+	if location == nil {
+		return nil
+	}
+	copied := *location
+	return &copied
+}
+
 func Save(path string, pkg Package) error {
 	if err := fileutil.WriteJSONAtomic(path, pkg); err != nil {
 		return fmt.Errorf("save briefing package: %w", err)