Added support for Area Forecast Discussions issued by the NWS

internal/sinks/postgres/map.go

@@ -20,6 +20,8 @@ func mapPostgresEvent(_ context.Context, e fkevent.Event) ([]fksinks.PostgresWri
 		return mapObservationEvent(e)
 	case standards.SchemaWeatherForecastV1:
 		return mapForecastEvent(e)
+	case standards.SchemaWeatherForecastDiscussionV1:
+		return mapForecastDiscussionEvent(e)
 	case standards.SchemaWeatherAlertV1:
 		return mapAlertEvent(e)
 	default:
@@ -160,6 +162,62 @@ func mapForecastEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 	return writes, nil
 }
 
+func mapForecastDiscussionEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
+	run, err := decodePayload[model.WeatherForecastDiscussion](e.Payload)
+	if err != nil {
+		return nil, fmt.Errorf("decode forecast discussion payload: %w", err)
+	}
+	if run.IssuedAt.IsZero() {
+		return nil, fmt.Errorf("decode forecast discussion payload: issuedAt is required")
+	}
+	if strings.TrimSpace(string(run.Product)) == "" {
+		return nil, fmt.Errorf("decode forecast discussion payload: product is required")
+	}
+
+	issuedAt := run.IssuedAt.UTC()
+	shortTermQualifier, shortTermIssuedAt, shortTermText := nullableDiscussionSection(run.ShortTerm)
+	longTermQualifier, longTermIssuedAt, longTermText := nullableDiscussionSection(run.LongTerm)
+
+	writes := make([]fksinks.PostgresWrite, 0, 1+len(run.KeyMessages))
+	writes = append(writes, fksinks.PostgresWrite{
+		Table: tableForecastDiscussions,
+		Values: map[string]any{
+			"event_id":             e.ID,
+			"event_kind":           string(e.Kind),
+			"event_source":         e.Source,
+			"event_schema":         e.Schema,
+			"event_emitted_at":     e.EmittedAt.UTC(),
+			"event_effective_at":   nullableTime(e.EffectiveAt),
+			"office_id":            nullableString(run.OfficeID),
+			"office_name":          nullableString(run.OfficeName),
+			"issued_at":            issuedAt,
+			"updated_at":           nullableTime(run.UpdatedAt),
+			"product":              string(run.Product),
+			"short_term_qualifier": shortTermQualifier,
+			"short_term_issued_at": shortTermIssuedAt,
+			"short_term_text":      shortTermText,
+			"long_term_qualifier":  longTermQualifier,
+			"long_term_issued_at":  longTermIssuedAt,
+			"long_term_text":       longTermText,
+			"key_message_count":    len(run.KeyMessages),
+		},
+	})
+
+	for i, msg := range run.KeyMessages {
+		writes = append(writes, fksinks.PostgresWrite{
+			Table: tableForecastDiscussionKeyMessages,
+			Values: map[string]any{
+				"run_event_id":  e.ID,
+				"message_index": i,
+				"issued_at":     issuedAt,
+				"message_text":  nullableString(msg),
+			},
+		})
+	}
+
+	return writes, nil
+}
+
 func mapAlertEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 	run, err := decodePayload[model.WeatherAlertRun](e.Payload)
 	if err != nil {
@@ -269,6 +327,13 @@ func decodePayload[T any](payload any) (T, error) {
 	return out, nil
 }
 
+func nullableDiscussionSection(section *model.WeatherForecastDiscussionSection) (any, any, any) {
+	if section == nil {
+		return nil, nil, nil
+	}
+	return nullableString(section.Qualifier), nullableTime(section.IssuedAt), nullableString(section.Text)
+}
+
 func countAlertReferences(alerts []model.WeatherAlert) int {
 	total := 0
 	for _, a := range alerts {