Made forecast-period conditionCode optional

internal/adapters/outbound/postgres/forecast_mapper.go

@@ -2,7 +2,11 @@
 // Layer: adapters/outbound/postgres forecast feature.
 package postgres
 
-import "gitea.maximumdirect.net/ejr/weatherfeeder/model"
+import (
+	"database/sql"
+
+	"gitea.maximumdirect.net/ejr/weatherfeeder/model"
+)
 
 func mapForecastParentRow(row forecastParentRow) model.WeatherForecastRun {
 	return model.WeatherForecastRun{
@@ -23,7 +27,7 @@ func mapForecastPeriodRow(row forecastPeriodRow) model.WeatherForecastPeriod {
 		EndTime:                           row.EndTime.UTC(),
 		Name:                              stringValue(row.Name),
 		IsDay:                             boolPtr(row.IsDay),
-		ConditionCode:                     model.WMOCode(row.ConditionCode),
+		ConditionCode:                     wmoCodePtr(row.ConditionCode),
 		TextDescription:                   stringValue(row.TextDescription),
 		TemperatureC:                      float64Ptr(row.TemperatureC),
 		TemperatureCMin:                   float64Ptr(row.TemperatureCMin),
@@ -43,3 +47,11 @@ func mapForecastPeriodRow(row forecastPeriodRow) model.WeatherForecastPeriod {
 		UVIndex:                           float64Ptr(row.UVIndex),
 	}
 }
+
+func wmoCodePtr(v sql.NullInt64) *model.WMOCode {
+	if !v.Valid {
+		return nil
+	}
+	out := model.WMOCode(v.Int64)
+	return &out
+}

internal/adapters/outbound/postgres/forecast_rows.go

@@ -25,7 +25,7 @@ type forecastPeriodRow struct {
 	EndTime                           time.Time
 	Name                              sql.NullString
 	IsDay                             sql.NullBool
-	ConditionCode                     int
+	ConditionCode                     sql.NullInt64
 	TextDescription                   sql.NullString
 	TemperatureC                      sql.NullFloat64
 	TemperatureCMin                   sql.NullFloat64

internal/adapters/outbound/postgres/repository_test.go

@@ -66,7 +66,7 @@ func TestMapForecastPeriodRowNullables(t *testing.T) {
 	period := mapForecastPeriodRow(forecastPeriodRow{
 		StartTime:       start,
 		EndTime:         end,
-		ConditionCode:   80,
+		ConditionCode:   sql.NullInt64{Int64: 80, Valid: true},
 		Name:            sql.NullString{String: "Midnight", Valid: true},
 		TemperatureC:    sql.NullFloat64{Float64: 12.5, Valid: true},
 		TemperatureCMin: sql.NullFloat64{Valid: false},
@@ -84,6 +84,21 @@ func TestMapForecastPeriodRowNullables(t *testing.T) {
 	if !period.StartTime.Equal(start) || !period.EndTime.Equal(end) {
 		t.Fatalf("unexpected time range: %s - %s", period.StartTime, period.EndTime)
 	}
+	if period.ConditionCode == nil || *period.ConditionCode != 80 {
+		t.Fatalf("expected condition code pointer 80, got %v", period.ConditionCode)
+	}
+}
+
+func TestMapForecastPeriodRowConditionCodeNullable(t *testing.T) {
+	period := mapForecastPeriodRow(forecastPeriodRow{
+		StartTime:     time.Date(2026, 3, 20, 0, 0, 0, 0, time.UTC),
+		EndTime:       time.Date(2026, 3, 20, 1, 0, 0, 0, time.UTC),
+		ConditionCode: sql.NullInt64{Valid: false},
+	})
+
+	if period.ConditionCode != nil {
+		t.Fatalf("expected nil condition code, got %v", period.ConditionCode)
+	}
 }
 
 func TestMapDiscussionParentRowNullables(t *testing.T) {