Refactored the application structure to better separate concerns between files and packages

internal/adapters/outbound/postgres/alerts_mapper.go

@@ -0,0 +1,70 @@
+// alerts_mapper.go maps alert rows into weather model payloads.
+// Layer: adapters/outbound/postgres alerts feature.
+package postgres
+
+import "gitea.maximumdirect.net/ejr/weatherfeeder/model"
+
+func mapAlertRunParentRow(row alertRunParentRow) model.WeatherAlertRun {
+	return model.WeatherAlertRun{
+		LocationID:   stringValue(row.LocationID),
+		LocationName: stringValue(row.LocationName),
+		AsOf:         row.AsOf.UTC(),
+		Latitude:     float64Ptr(row.Latitude),
+		Longitude:    float64Ptr(row.Longitude),
+	}
+}
+
+func mapAlertRow(row alertRow) indexedAlert {
+	return indexedAlert{
+		Index: row.AlertIndex,
+		Alert: model.WeatherAlert{
+			ID:              row.AlertID,
+			Event:           stringValue(row.Event),
+			Headline:        stringValue(row.Headline),
+			Severity:        stringValue(row.Severity),
+			Urgency:         stringValue(row.Urgency),
+			Certainty:       stringValue(row.Certainty),
+			Status:          stringValue(row.Status),
+			MessageType:     stringValue(row.MessageType),
+			Category:        stringValue(row.Category),
+			Response:        stringValue(row.Response),
+			Description:     stringValue(row.Description),
+			Instruction:     stringValue(row.Instruction),
+			Sent:            timePtr(row.Sent),
+			Effective:       timePtr(row.Effective),
+			Onset:           timePtr(row.Onset),
+			Expires:         timePtr(row.Expires),
+			AreaDescription: stringValue(row.AreaDescription),
+			SenderName:      stringValue(row.SenderName),
+		},
+	}
+}
+
+func mapAlertReferenceRow(row alertReferenceRow) indexedAlertReference {
+	return indexedAlertReference{
+		AlertIndex: row.AlertIndex,
+		Reference: model.AlertReference{
+			ID:         stringValue(row.ID),
+			Identifier: stringValue(row.Identifier),
+			Sender:     stringValue(row.Sender),
+			Sent:       timePtr(row.Sent),
+		},
+	}
+}
+
+func attachAlertReferences(alerts []indexedAlert, references []indexedAlertReference) []model.WeatherAlert {
+	refsByAlertIndex := make(map[int][]model.AlertReference, len(alerts))
+	for _, ref := range references {
+		refsByAlertIndex[ref.AlertIndex] = append(refsByAlertIndex[ref.AlertIndex], ref.Reference)
+	}
+
+	out := make([]model.WeatherAlert, 0, len(alerts))
+	for _, alert := range alerts {
+		mapped := alert.Alert
+		if refs := refsByAlertIndex[alert.Index]; len(refs) > 0 {
+			mapped.References = refs
+		}
+		out = append(out, mapped)
+	}
+	return out
+}