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
+}

internal/adapters/outbound/postgres/alerts_queries.go

@@ -0,0 +1,53 @@
+// alerts_queries.go contains SQL text for alert-run reads.
+// Layer: adapters/outbound/postgres alerts feature.
+package postgres
+
+const (
+	queryLatestAlertRun = `
+SELECT
+  event_id,
+  location_id,
+  location_name,
+  as_of,
+  latitude,
+  longitude
+FROM alert_runs
+ORDER BY as_of DESC, event_emitted_at DESC
+LIMIT 1`
+
+	queryAlerts = `
+SELECT
+  alert_index,
+  alert_id,
+  event,
+  headline,
+  severity,
+  urgency,
+  certainty,
+  status,
+  message_type,
+  category,
+  response,
+  description,
+  instruction,
+  sent,
+  effective,
+  onset,
+  expires,
+  area_description,
+  sender_name
+FROM alerts
+WHERE run_event_id = $1
+ORDER BY alert_index ASC`
+
+	queryAlertReferences = `
+SELECT
+  alert_index,
+  id,
+  identifier,
+  sender,
+  sent
+FROM alert_references
+WHERE run_event_id = $1
+ORDER BY alert_index ASC, reference_index ASC`
+)

internal/adapters/outbound/postgres/alerts_read.go

@@ -0,0 +1,110 @@
+// alerts_read.go executes alert-run, alerts, and reference queries.
+// Layer: adapters/outbound/postgres alerts feature.
+package postgres
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+
+	"gitea.maximumdirect.net/ejr/weatherfeeder/model"
+)
+
+func (r *Repository) LatestAlertRun(ctx context.Context) (*model.WeatherAlertRun, error) {
+	if r == nil || r.db == nil {
+		return nil, fmt.Errorf("postgres repository is not configured")
+	}
+
+	var row alertRunParentRow
+	err := r.db.QueryRowContext(ctx, queryLatestAlertRun).Scan(
+		&row.EventID,
+		&row.LocationID,
+		&row.LocationName,
+		&row.AsOf,
+		&row.Latitude,
+		&row.Longitude,
+	)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("query latest alert run: %w", err)
+	}
+
+	run := mapAlertRunParentRow(row)
+
+	alerts, err := r.loadAlerts(ctx, row.EventID)
+	if err != nil {
+		return nil, err
+	}
+	run.Alerts = alerts
+
+	return &run, nil
+}
+
+func (r *Repository) loadAlerts(ctx context.Context, eventID string) ([]model.WeatherAlert, error) {
+	alertsRows, err := r.db.QueryContext(ctx, queryAlerts, eventID)
+	if err != nil {
+		return nil, fmt.Errorf("query alerts: %w", err)
+	}
+	defer alertsRows.Close()
+
+	indexedAlerts := make([]indexedAlert, 0)
+	for alertsRows.Next() {
+		var row alertRow
+		if err := alertsRows.Scan(
+			&row.AlertIndex,
+			&row.AlertID,
+			&row.Event,
+			&row.Headline,
+			&row.Severity,
+			&row.Urgency,
+			&row.Certainty,
+			&row.Status,
+			&row.MessageType,
+			&row.Category,
+			&row.Response,
+			&row.Description,
+			&row.Instruction,
+			&row.Sent,
+			&row.Effective,
+			&row.Onset,
+			&row.Expires,
+			&row.AreaDescription,
+			&row.SenderName,
+		); err != nil {
+			return nil, fmt.Errorf("scan alerts row: %w", err)
+		}
+		indexedAlerts = append(indexedAlerts, mapAlertRow(row))
+	}
+	if err := alertsRows.Err(); err != nil {
+		return nil, fmt.Errorf("iterate alerts rows: %w", err)
+	}
+
+	referenceRows, err := r.db.QueryContext(ctx, queryAlertReferences, eventID)
+	if err != nil {
+		return nil, fmt.Errorf("query alert references: %w", err)
+	}
+	defer referenceRows.Close()
+
+	indexedReferences := make([]indexedAlertReference, 0)
+	for referenceRows.Next() {
+		var row alertReferenceRow
+		if err := referenceRows.Scan(
+			&row.AlertIndex,
+			&row.ID,
+			&row.Identifier,
+			&row.Sender,
+			&row.Sent,
+		); err != nil {
+			return nil, fmt.Errorf("scan alert reference row: %w", err)
+		}
+		indexedReferences = append(indexedReferences, mapAlertReferenceRow(row))
+	}
+	if err := referenceRows.Err(); err != nil {
+		return nil, fmt.Errorf("iterate alert reference rows: %w", err)
+	}
+
+	return attachAlertReferences(indexedAlerts, indexedReferences), nil
+}

internal/adapters/outbound/postgres/alerts_rows.go

@@ -0,0 +1,59 @@
+// alerts_rows.go defines row DTOs for alert-run, alert, and reference reads.
+// Layer: adapters/outbound/postgres alerts feature.
+package postgres
+
+import (
+	"database/sql"
+	"time"
+
+	"gitea.maximumdirect.net/ejr/weatherfeeder/model"
+)
+
+type alertRunParentRow struct {
+	EventID      string
+	LocationID   sql.NullString
+	LocationName sql.NullString
+	AsOf         time.Time
+	Latitude     sql.NullFloat64
+	Longitude    sql.NullFloat64
+}
+
+type alertRow struct {
+	AlertIndex      int
+	AlertID         string
+	Event           sql.NullString
+	Headline        sql.NullString
+	Severity        sql.NullString
+	Urgency         sql.NullString
+	Certainty       sql.NullString
+	Status          sql.NullString
+	MessageType     sql.NullString
+	Category        sql.NullString
+	Response        sql.NullString
+	Description     sql.NullString
+	Instruction     sql.NullString
+	Sent            sql.NullTime
+	Effective       sql.NullTime
+	Onset           sql.NullTime
+	Expires         sql.NullTime
+	AreaDescription sql.NullString
+	SenderName      sql.NullString
+}
+
+type indexedAlert struct {
+	Index int
+	Alert model.WeatherAlert
+}
+
+type alertReferenceRow struct {
+	AlertIndex int
+	ID         sql.NullString
+	Identifier sql.NullString
+	Sender     sql.NullString
+	Sent       sql.NullTime
+}
+
+type indexedAlertReference struct {
+	AlertIndex int
+	Reference  model.AlertReference
+}

internal/adapters/outbound/postgres/conditions_mapper.go

@@ -0,0 +1,30 @@
+// conditions_mapper.go maps current-conditions DB rows into app models.
+// Layer: adapters/outbound/postgres conditions feature.
+package postgres
+
+import (
+	"gitea.maximumdirect.net/ejr/weatherapi/internal/app"
+	"gitea.maximumdirect.net/ejr/weatherfeeder/model"
+)
+
+func mapCurrentConditionsRow(row currentConditionsRow) *app.CurrentConditions {
+	if row.SampleCount == 0 {
+		return nil
+	}
+
+	conditionCode := model.WMOUnknown
+	if row.ConditionCode.Valid {
+		conditionCode = model.WMOCode(row.ConditionCode.Int64)
+	}
+
+	return &app.CurrentConditions{
+		TemperatureC:            float64Ptr(row.TemperatureC),
+		ApparentTemperatureC:    float64Ptr(row.ApparentTemperatureC),
+		DewpointC:               float64Ptr(row.DewpointC),
+		RelativeHumidityPercent: float64Ptr(row.RelativeHumidityPercent),
+		WindSpeedKmh:            float64Ptr(row.WindSpeedKmh),
+		WindDirectionDegrees:    float64Ptr(row.WindDirectionDegrees),
+		ConditionCode:           conditionCode,
+		IsDay:                   boolPtr(row.IsDay),
+	}
+}

internal/adapters/outbound/postgres/conditions_queries.go

@@ -0,0 +1,50 @@
+// conditions_queries.go contains SQL text for current-conditions reads.
+// Layer: adapters/outbound/postgres conditions feature.
+package postgres
+
+const (
+	queryCurrentConditions = `
+WITH windowed AS (
+  SELECT
+    temperature_c,
+    apparent_temperature_c,
+    dewpoint_c,
+    relative_humidity_percent,
+    wind_speed_kmh,
+    wind_direction_degrees,
+    condition_code,
+    is_day,
+    observed_at
+  FROM observations
+  WHERE observed_at > CURRENT_TIMESTAMP - make_interval(mins => $1)
+)
+SELECT
+  COUNT(*) AS sample_count,
+  AVG(temperature_c) AS temperature_c,
+  AVG(apparent_temperature_c) AS apparent_temperature_c,
+  AVG(dewpoint_c) AS dewpoint_c,
+  AVG(relative_humidity_percent) AS relative_humidity_percent,
+  AVG(wind_speed_kmh) AS wind_speed_kmh,
+  CASE
+    WHEN atan2d(
+      AVG(sind(wind_direction_degrees)),
+      AVG(cosd(wind_direction_degrees))
+    ) < 0
+    THEN atan2d(
+      AVG(sind(wind_direction_degrees)),
+      AVG(cosd(wind_direction_degrees))
+    ) + 360.0
+    ELSE atan2d(
+      AVG(sind(wind_direction_degrees)),
+      AVG(cosd(wind_direction_degrees))
+    )
+  END AS wind_direction_degrees,
+  MAX(condition_code) AS condition_code,
+  (
+    SELECT is_day
+    FROM windowed
+    ORDER BY observed_at DESC
+    LIMIT 1
+  ) AS is_day
+FROM windowed`
+)

internal/adapters/outbound/postgres/conditions_read.go

@@ -0,0 +1,39 @@
+// conditions_read.go executes current-conditions queries.
+// Layer: adapters/outbound/postgres conditions feature.
+package postgres
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+
+	"gitea.maximumdirect.net/ejr/weatherapi/internal/app"
+)
+
+func (r *Repository) CurrentConditions(ctx context.Context, observationWindowMinutes int) (*app.CurrentConditions, error) {
+	if r == nil || r.db == nil {
+		return nil, fmt.Errorf("postgres repository is not configured")
+	}
+
+	var row currentConditionsRow
+	err := r.db.QueryRowContext(ctx, queryCurrentConditions, observationWindowMinutes).Scan(
+		&row.SampleCount,
+		&row.TemperatureC,
+		&row.ApparentTemperatureC,
+		&row.DewpointC,
+		&row.RelativeHumidityPercent,
+		&row.WindSpeedKmh,
+		&row.WindDirectionDegrees,
+		&row.ConditionCode,
+		&row.IsDay,
+	)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("query current conditions: %w", err)
+	}
+
+	return mapCurrentConditionsRow(row), nil
+}

internal/adapters/outbound/postgres/conditions_rows.go

@@ -0,0 +1,17 @@
+// conditions_rows.go defines row DTOs for current-conditions reads.
+// Layer: adapters/outbound/postgres conditions feature.
+package postgres
+
+import "database/sql"
+
+type currentConditionsRow struct {
+	SampleCount             int64
+	TemperatureC            sql.NullFloat64
+	ApparentTemperatureC    sql.NullFloat64
+	DewpointC               sql.NullFloat64
+	RelativeHumidityPercent sql.NullFloat64
+	WindSpeedKmh            sql.NullFloat64
+	WindDirectionDegrees    sql.NullFloat64
+	ConditionCode           sql.NullInt64
+	IsDay                   sql.NullBool
+}

internal/adapters/outbound/postgres/forecast_mapper.go

@@ -0,0 +1,49 @@
+// forecast_mapper.go maps forecast rows into weather model payloads.
+// Layer: adapters/outbound/postgres forecast feature.
+package postgres
+
+import "gitea.maximumdirect.net/ejr/weatherfeeder/model"
+
+func mapForecastParentRow(row forecastParentRow) model.WeatherForecastRun {
+	return model.WeatherForecastRun{
+		LocationID:      stringValue(row.LocationID),
+		LocationName:    stringValue(row.LocationName),
+		IssuedAt:        row.IssuedAt.UTC(),
+		UpdatedAt:       timePtr(row.UpdatedAt),
+		Product:         model.ForecastProduct(row.Product),
+		Latitude:        float64Ptr(row.Latitude),
+		Longitude:       float64Ptr(row.Longitude),
+		ElevationMeters: float64Ptr(row.ElevationMeters),
+	}
+}
+
+func mapForecastPeriodRow(row forecastPeriodRow) model.WeatherForecastPeriod {
+	return model.WeatherForecastPeriod{
+		StartTime:                         row.StartTime.UTC(),
+		EndTime:                           row.EndTime.UTC(),
+		Name:                              stringValue(row.Name),
+		IsDay:                             boolPtr(row.IsDay),
+		ConditionCode:                     model.WMOCode(row.ConditionCode),
+		ConditionText:                     stringValue(row.ConditionText),
+		ProviderRawDescription:            stringValue(row.ProviderRawDescription),
+		TextDescription:                   stringValue(row.TextDescription),
+		DetailedText:                      stringValue(row.DetailedText),
+		IconURL:                           stringValue(row.IconURL),
+		TemperatureC:                      float64Ptr(row.TemperatureC),
+		TemperatureCMin:                   float64Ptr(row.TemperatureCMin),
+		TemperatureCMax:                   float64Ptr(row.TemperatureCMax),
+		DewpointC:                         float64Ptr(row.DewpointC),
+		RelativeHumidityPercent:           float64Ptr(row.RelativeHumidityPercent),
+		WindDirectionDegrees:              float64Ptr(row.WindDirectionDegrees),
+		WindSpeedKmh:                      float64Ptr(row.WindSpeedKmh),
+		WindGustKmh:                       float64Ptr(row.WindGustKmh),
+		BarometricPressurePa:              float64Ptr(row.BarometricPressurePa),
+		VisibilityMeters:                  float64Ptr(row.VisibilityMeters),
+		ApparentTemperatureC:              float64Ptr(row.ApparentTemperatureC),
+		CloudCoverPercent:                 float64Ptr(row.CloudCoverPercent),
+		ProbabilityOfPrecipitationPercent: float64Ptr(row.ProbabilityOfPrecipitationPercent),
+		PrecipitationAmountMm:             float64Ptr(row.PrecipitationAmountMM),
+		SnowfallDepthMM:                   float64Ptr(row.SnowfallDepthMM),
+		UVIndex:                           float64Ptr(row.UVIndex),
+	}
+}

internal/adapters/outbound/postgres/forecast_queries.go

@@ -0,0 +1,54 @@
+// forecast_queries.go contains SQL text for hourly forecast reads.
+// Layer: adapters/outbound/postgres forecast feature.
+package postgres
+
+const (
+	queryLatestHourlyForecast = `
+SELECT
+  event_id,
+  location_id,
+  location_name,
+  issued_at,
+  updated_at,
+  product,
+  latitude,
+  longitude,
+  elevation_meters
+FROM forecasts
+WHERE product = 'hourly'
+ORDER BY issued_at DESC, event_emitted_at DESC
+LIMIT 1`
+
+	queryForecastPeriods = `
+SELECT
+  period_index,
+  start_time,
+  end_time,
+  name,
+  is_day,
+  condition_code,
+  condition_text,
+  provider_raw_description,
+  text_description,
+  detailed_text,
+  icon_url,
+  temperature_c,
+  temperature_c_min,
+  temperature_c_max,
+  dewpoint_c,
+  relative_humidity_percent,
+  wind_direction_degrees,
+  wind_speed_kmh,
+  wind_gust_kmh,
+  barometric_pressure_pa,
+  visibility_meters,
+  apparent_temperature_c,
+  cloud_cover_percent,
+  probability_of_precipitation_percent,
+  precipitation_amount_mm,
+  snowfall_depth_mm,
+  uv_index
+FROM forecast_periods
+WHERE run_event_id = $1
+ORDER BY period_index ASC`
+)

internal/adapters/outbound/postgres/forecast_read.go

@@ -0,0 +1,96 @@
+// forecast_read.go executes hourly forecast and period queries.
+// Layer: adapters/outbound/postgres forecast feature.
+package postgres
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+
+	"gitea.maximumdirect.net/ejr/weatherfeeder/model"
+)
+
+func (r *Repository) LatestHourlyForecast(ctx context.Context) (*model.WeatherForecastRun, error) {
+	if r == nil || r.db == nil {
+		return nil, fmt.Errorf("postgres repository is not configured")
+	}
+
+	var row forecastParentRow
+	err := r.db.QueryRowContext(ctx, queryLatestHourlyForecast).Scan(
+		&row.EventID,
+		&row.LocationID,
+		&row.LocationName,
+		&row.IssuedAt,
+		&row.UpdatedAt,
+		&row.Product,
+		&row.Latitude,
+		&row.Longitude,
+		&row.ElevationMeters,
+	)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("query latest hourly forecast: %w", err)
+	}
+
+	run := mapForecastParentRow(row)
+
+	periods, err := r.loadForecastPeriods(ctx, row.EventID)
+	if err != nil {
+		return nil, err
+	}
+	run.Periods = periods
+
+	return &run, nil
+}
+
+func (r *Repository) loadForecastPeriods(ctx context.Context, eventID string) ([]model.WeatherForecastPeriod, error) {
+	rows, err := r.db.QueryContext(ctx, queryForecastPeriods, eventID)
+	if err != nil {
+		return nil, fmt.Errorf("query forecast periods: %w", err)
+	}
+	defer rows.Close()
+
+	out := make([]model.WeatherForecastPeriod, 0)
+	for rows.Next() {
+		var row forecastPeriodRow
+		if err := rows.Scan(
+			&row.PeriodIndex,
+			&row.StartTime,
+			&row.EndTime,
+			&row.Name,
+			&row.IsDay,
+			&row.ConditionCode,
+			&row.ConditionText,
+			&row.ProviderRawDescription,
+			&row.TextDescription,
+			&row.DetailedText,
+			&row.IconURL,
+			&row.TemperatureC,
+			&row.TemperatureCMin,
+			&row.TemperatureCMax,
+			&row.DewpointC,
+			&row.RelativeHumidityPercent,
+			&row.WindDirectionDegrees,
+			&row.WindSpeedKmh,
+			&row.WindGustKmh,
+			&row.BarometricPressurePa,
+			&row.VisibilityMeters,
+			&row.ApparentTemperatureC,
+			&row.CloudCoverPercent,
+			&row.ProbabilityOfPrecipitationPercent,
+			&row.PrecipitationAmountMM,
+			&row.SnowfallDepthMM,
+			&row.UVIndex,
+		); err != nil {
+			return nil, fmt.Errorf("scan forecast period row: %w", err)
+		}
+		out = append(out, mapForecastPeriodRow(row))
+	}
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("iterate forecast period rows: %w", err)
+	}
+	return out, nil
+}

internal/adapters/outbound/postgres/forecast_rows.go

@@ -0,0 +1,50 @@
+// forecast_rows.go defines row DTOs for forecast reads.
+// Layer: adapters/outbound/postgres forecast feature.
+package postgres
+
+import (
+	"database/sql"
+	"time"
+)
+
+type forecastParentRow struct {
+	EventID         string
+	LocationID      sql.NullString
+	LocationName    sql.NullString
+	IssuedAt        time.Time
+	UpdatedAt       sql.NullTime
+	Product         string
+	Latitude        sql.NullFloat64
+	Longitude       sql.NullFloat64
+	ElevationMeters sql.NullFloat64
+}
+
+type forecastPeriodRow struct {
+	PeriodIndex                       int
+	StartTime                         time.Time
+	EndTime                           time.Time
+	Name                              sql.NullString
+	IsDay                             sql.NullBool
+	ConditionCode                     int
+	ConditionText                     sql.NullString
+	ProviderRawDescription            sql.NullString
+	TextDescription                   sql.NullString
+	DetailedText                      sql.NullString
+	IconURL                           sql.NullString
+	TemperatureC                      sql.NullFloat64
+	TemperatureCMin                   sql.NullFloat64
+	TemperatureCMax                   sql.NullFloat64
+	DewpointC                         sql.NullFloat64
+	RelativeHumidityPercent           sql.NullFloat64
+	WindDirectionDegrees              sql.NullFloat64
+	WindSpeedKmh                      sql.NullFloat64
+	WindGustKmh                       sql.NullFloat64
+	BarometricPressurePa              sql.NullFloat64
+	VisibilityMeters                  sql.NullFloat64
+	ApparentTemperatureC              sql.NullFloat64
+	CloudCoverPercent                 sql.NullFloat64
+	ProbabilityOfPrecipitationPercent sql.NullFloat64
+	PrecipitationAmountMM             sql.NullFloat64
+	SnowfallDepthMM                   sql.NullFloat64
+	UVIndex                           sql.NullFloat64
+}

internal/adapters/outbound/postgres/observations_mapper.go

@@ -0,0 +1,42 @@
+// observations_mapper.go maps observation rows into weather model payloads.
+// Layer: adapters/outbound/postgres observations feature.
+package postgres
+
+import (
+	"encoding/json"
+	"strings"
+
+	"gitea.maximumdirect.net/ejr/weatherfeeder/model"
+)
+
+func mapObservationParentRow(row observationParentRow) model.WeatherObservation {
+	return model.WeatherObservation{
+		StationID:               stringValue(row.StationID),
+		StationName:             stringValue(row.StationName),
+		Timestamp:               row.ObservedAt.UTC(),
+		ConditionCode:           model.WMOCode(row.ConditionCode),
+		IsDay:                   boolPtr(row.IsDay),
+		TextDescription:         stringValue(row.TextDescription),
+		TemperatureC:            float64Ptr(row.TemperatureC),
+		DewpointC:               float64Ptr(row.DewpointC),
+		WindDirectionDegrees:    float64Ptr(row.WindDirectionDegrees),
+		WindSpeedKmh:            float64Ptr(row.WindSpeedKmh),
+		WindGustKmh:             float64Ptr(row.WindGustKmh),
+		BarometricPressurePa:    float64Ptr(row.BarometricPressurePa),
+		VisibilityMeters:        float64Ptr(row.VisibilityMeters),
+		RelativeHumidityPercent: float64Ptr(row.RelativeHumidityPercent),
+		ApparentTemperatureC:    float64Ptr(row.ApparentTemperatureC),
+	}
+}
+
+func mapObservationPresentWeatherRow(row observationPresentWeatherRow) (model.PresentWeather, error) {
+	if !row.RawText.Valid || strings.TrimSpace(row.RawText.String) == "" {
+		return model.PresentWeather{}, nil
+	}
+
+	var raw map[string]any
+	if err := json.Unmarshal([]byte(row.RawText.String), &raw); err != nil {
+		return model.PresentWeather{}, err
+	}
+	return model.PresentWeather{Raw: raw}, nil
+}

internal/adapters/outbound/postgres/observations_queries.go

@@ -0,0 +1,33 @@
+// observations_queries.go contains SQL text for observation reads.
+// Layer: adapters/outbound/postgres observations feature.
+package postgres
+
+const (
+	queryLatestObservation = `
+SELECT
+  event_id,
+  station_id,
+  station_name,
+  observed_at,
+  condition_code,
+  is_day,
+  text_description,
+  temperature_c,
+  dewpoint_c,
+  wind_direction_degrees,
+  wind_speed_kmh,
+  wind_gust_kmh,
+  barometric_pressure_pa,
+  visibility_meters,
+  relative_humidity_percent,
+  apparent_temperature_c
+FROM observations
+ORDER BY observed_at DESC, event_emitted_at DESC
+LIMIT 1`
+
+	queryObservationPresentWeather = `
+SELECT weather_index, raw_text
+FROM observation_present_weather
+WHERE event_id = $1
+ORDER BY weather_index ASC`
+)

internal/adapters/outbound/postgres/observations_read.go

@@ -0,0 +1,79 @@
+// observations_read.go executes observation and present-weather queries.
+// Layer: adapters/outbound/postgres observations feature.
+package postgres
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+
+	"gitea.maximumdirect.net/ejr/weatherfeeder/model"
+)
+
+func (r *Repository) LatestObservation(ctx context.Context) (*model.WeatherObservation, error) {
+	if r == nil || r.db == nil {
+		return nil, fmt.Errorf("postgres repository is not configured")
+	}
+
+	var row observationParentRow
+	err := r.db.QueryRowContext(ctx, queryLatestObservation).Scan(
+		&row.EventID,
+		&row.StationID,
+		&row.StationName,
+		&row.ObservedAt,
+		&row.ConditionCode,
+		&row.IsDay,
+		&row.TextDescription,
+		&row.TemperatureC,
+		&row.DewpointC,
+		&row.WindDirectionDegrees,
+		&row.WindSpeedKmh,
+		&row.WindGustKmh,
+		&row.BarometricPressurePa,
+		&row.VisibilityMeters,
+		&row.RelativeHumidityPercent,
+		&row.ApparentTemperatureC,
+	)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("query latest observation: %w", err)
+	}
+
+	obs := mapObservationParentRow(row)
+
+	presentWeather, err := r.loadObservationPresentWeather(ctx, row.EventID)
+	if err != nil {
+		return nil, err
+	}
+	obs.PresentWeather = presentWeather
+
+	return &obs, nil
+}
+
+func (r *Repository) loadObservationPresentWeather(ctx context.Context, eventID string) ([]model.PresentWeather, error) {
+	rows, err := r.db.QueryContext(ctx, queryObservationPresentWeather, eventID)
+	if err != nil {
+		return nil, fmt.Errorf("query observation present weather: %w", err)
+	}
+	defer rows.Close()
+
+	out := make([]model.PresentWeather, 0)
+	for rows.Next() {
+		var row observationPresentWeatherRow
+		if err := rows.Scan(&row.WeatherIndex, &row.RawText); err != nil {
+			return nil, fmt.Errorf("scan observation present weather row: %w", err)
+		}
+		pw, err := mapObservationPresentWeatherRow(row)
+		if err != nil {
+			return nil, fmt.Errorf("decode observation present weather row (index=%d): %w", row.WeatherIndex, err)
+		}
+		out = append(out, pw)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, fmt.Errorf("iterate observation present weather rows: %w", err)
+	}
+	return out, nil
+}

internal/adapters/outbound/postgres/observations_rows.go

@@ -0,0 +1,32 @@
+// observations_rows.go defines row DTOs for observation reads.
+// Layer: adapters/outbound/postgres observations feature.
+package postgres
+
+import (
+	"database/sql"
+	"time"
+)
+
+type observationParentRow struct {
+	EventID                 string
+	StationID               sql.NullString
+	StationName             sql.NullString
+	ObservedAt              time.Time
+	ConditionCode           int
+	IsDay                   sql.NullBool
+	TextDescription         sql.NullString
+	TemperatureC            sql.NullFloat64
+	DewpointC               sql.NullFloat64
+	WindDirectionDegrees    sql.NullFloat64
+	WindSpeedKmh            sql.NullFloat64
+	WindGustKmh             sql.NullFloat64
+	BarometricPressurePa    sql.NullFloat64
+	VisibilityMeters        sql.NullFloat64
+	RelativeHumidityPercent sql.NullFloat64
+	ApparentTemperatureC    sql.NullFloat64
+}
+
+type observationPresentWeatherRow struct {
+	WeatherIndex int
+	RawText      sql.NullString
+}

internal/adapters/outbound/postgres/repository.go

@@ -1,188 +1,11 @@
+// repository.go defines the Postgres repository shell and constructor.
+// Layer: adapters/outbound/postgres repository root.
 package postgres
 
 import (
-	"context"
 	"database/sql"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"strings"
-	"time"
 
-	"gitea.maximumdirect.net/ejr/weatherapi/internal/core"
-	"gitea.maximumdirect.net/ejr/weatherfeeder/model"
-)
-
-const (
-	queryLatestObservation = `
-SELECT
-  event_id,
-  station_id,
-  station_name,
-  observed_at,
-  condition_code,
-  is_day,
-  text_description,
-  temperature_c,
-  dewpoint_c,
-  wind_direction_degrees,
-  wind_speed_kmh,
-  wind_gust_kmh,
-  barometric_pressure_pa,
-  visibility_meters,
-  relative_humidity_percent,
-  apparent_temperature_c
-FROM observations
-ORDER BY observed_at DESC, event_emitted_at DESC
-LIMIT 1`
-
-	queryCurrentConditions = `
-WITH windowed AS (
-  SELECT
-    temperature_c,
-    apparent_temperature_c,
-    dewpoint_c,
-    relative_humidity_percent,
-    wind_speed_kmh,
-    wind_direction_degrees,
-    condition_code,
-    is_day,
-    observed_at
-  FROM observations
-  WHERE observed_at > CURRENT_TIMESTAMP - make_interval(mins => $1)
-)
-SELECT
-  COUNT(*) AS sample_count,
-  AVG(temperature_c) AS temperature_c,
-  AVG(apparent_temperature_c) AS apparent_temperature_c,
-  AVG(dewpoint_c) AS dewpoint_c,
-  AVG(relative_humidity_percent) AS relative_humidity_percent,
-  AVG(wind_speed_kmh) AS wind_speed_kmh,
-  CASE
-    WHEN atan2d(
-      AVG(sind(wind_direction_degrees)),
-      AVG(cosd(wind_direction_degrees))
-    ) < 0
-    THEN atan2d(
-      AVG(sind(wind_direction_degrees)),
-      AVG(cosd(wind_direction_degrees))
-    ) + 360.0
-    ELSE atan2d(
-      AVG(sind(wind_direction_degrees)),
-      AVG(cosd(wind_direction_degrees))
-    )
-  END AS wind_direction_degrees,
-  MAX(condition_code) AS condition_code,
-  (
-    SELECT is_day
-    FROM windowed
-    ORDER BY observed_at DESC
-    LIMIT 1
-  ) AS is_day
-FROM windowed`
-
-	queryObservationPresentWeather = `
-SELECT weather_index, raw_text
-FROM observation_present_weather
-WHERE event_id = $1
-ORDER BY weather_index ASC`
-
-	queryLatestHourlyForecast = `
-SELECT
-  event_id,
-  location_id,
-  location_name,
-  issued_at,
-  updated_at,
-  product,
-  latitude,
-  longitude,
-  elevation_meters
-FROM forecasts
-WHERE product = 'hourly'
-ORDER BY issued_at DESC, event_emitted_at DESC
-LIMIT 1`
-
-	queryForecastPeriods = `
-SELECT
-  period_index,
-  start_time,
-  end_time,
-  name,
-  is_day,
-  condition_code,
-  condition_text,
-  provider_raw_description,
-  text_description,
-  detailed_text,
-  icon_url,
-  temperature_c,
-  temperature_c_min,
-  temperature_c_max,
-  dewpoint_c,
-  relative_humidity_percent,
-  wind_direction_degrees,
-  wind_speed_kmh,
-  wind_gust_kmh,
-  barometric_pressure_pa,
-  visibility_meters,
-  apparent_temperature_c,
-  cloud_cover_percent,
-  probability_of_precipitation_percent,
-  precipitation_amount_mm,
-  snowfall_depth_mm,
-  uv_index
-FROM forecast_periods
-WHERE run_event_id = $1
-ORDER BY period_index ASC`
-
-	queryLatestAlertRun = `
-SELECT
-  event_id,
-  location_id,
-  location_name,
-  as_of,
-  latitude,
-  longitude
-FROM alert_runs
-ORDER BY as_of DESC, event_emitted_at DESC
-LIMIT 1`
-
-	queryAlerts = `
-SELECT
-  alert_index,
-  alert_id,
-  event,
-  headline,
-  severity,
-  urgency,
-  certainty,
-  status,
-  message_type,
-  category,
-  response,
-  description,
-  instruction,
-  sent,
-  effective,
-  onset,
-  expires,
-  area_description,
-  sender_name
-FROM alerts
-WHERE run_event_id = $1
-ORDER BY alert_index ASC`
-
-	queryAlertReferences = `
-SELECT
-  alert_index,
-  id,
-  identifier,
-  sender,
-  sent
-FROM alert_references
-WHERE run_event_id = $1
-ORDER BY alert_index ASC, reference_index ASC`
+	"gitea.maximumdirect.net/ejr/weatherapi/internal/app"
 )
 
 // Repository is a Postgres-backed implementation of weatherapi read ports.
@@ -190,605 +13,8 @@ type Repository struct {
 	db *sql.DB
 }
 
-var _ core.Repository = (*Repository)(nil)
+var _ app.Repository = (*Repository)(nil)
 
 func NewRepository(db *sql.DB) *Repository {
 	return &Repository{db: db}
 }
-
-func (r *Repository) LatestObservation(ctx context.Context) (*model.WeatherObservation, error) {
-	if r == nil || r.db == nil {
-		return nil, fmt.Errorf("postgres repository is not configured")
-	}
-
-	var row observationParentRow
-	err := r.db.QueryRowContext(ctx, queryLatestObservation).Scan(
-		&row.EventID,
-		&row.StationID,
-		&row.StationName,
-		&row.ObservedAt,
-		&row.ConditionCode,
-		&row.IsDay,
-		&row.TextDescription,
-		&row.TemperatureC,
-		&row.DewpointC,
-		&row.WindDirectionDegrees,
-		&row.WindSpeedKmh,
-		&row.WindGustKmh,
-		&row.BarometricPressurePa,
-		&row.VisibilityMeters,
-		&row.RelativeHumidityPercent,
-		&row.ApparentTemperatureC,
-	)
-	if errors.Is(err, sql.ErrNoRows) {
-		return nil, nil
-	}
-	if err != nil {
-		return nil, fmt.Errorf("query latest observation: %w", err)
-	}
-
-	obs := mapObservationParentRow(row)
-
-	presentWeather, err := r.loadObservationPresentWeather(ctx, row.EventID)
-	if err != nil {
-		return nil, err
-	}
-	obs.PresentWeather = presentWeather
-
-	return &obs, nil
-}
-
-func (r *Repository) CurrentConditions(ctx context.Context, observationWindowMinutes int) (*core.CurrentConditions, error) {
-	if r == nil || r.db == nil {
-		return nil, fmt.Errorf("postgres repository is not configured")
-	}
-
-	var row currentConditionsRow
-	err := r.db.QueryRowContext(ctx, queryCurrentConditions, observationWindowMinutes).Scan(
-		&row.SampleCount,
-		&row.TemperatureC,
-		&row.ApparentTemperatureC,
-		&row.DewpointC,
-		&row.RelativeHumidityPercent,
-		&row.WindSpeedKmh,
-		&row.WindDirectionDegrees,
-		&row.ConditionCode,
-		&row.IsDay,
-	)
-	if errors.Is(err, sql.ErrNoRows) {
-		return nil, nil
-	}
-	if err != nil {
-		return nil, fmt.Errorf("query current conditions: %w", err)
-	}
-
-	return mapCurrentConditionsRow(row), nil
-}
-
-func (r *Repository) LatestHourlyForecast(ctx context.Context) (*model.WeatherForecastRun, error) {
-	if r == nil || r.db == nil {
-		return nil, fmt.Errorf("postgres repository is not configured")
-	}
-
-	var row forecastParentRow
-	err := r.db.QueryRowContext(ctx, queryLatestHourlyForecast).Scan(
-		&row.EventID,
-		&row.LocationID,
-		&row.LocationName,
-		&row.IssuedAt,
-		&row.UpdatedAt,
-		&row.Product,
-		&row.Latitude,
-		&row.Longitude,
-		&row.ElevationMeters,
-	)
-	if errors.Is(err, sql.ErrNoRows) {
-		return nil, nil
-	}
-	if err != nil {
-		return nil, fmt.Errorf("query latest hourly forecast: %w", err)
-	}
-
-	run := mapForecastParentRow(row)
-
-	periods, err := r.loadForecastPeriods(ctx, row.EventID)
-	if err != nil {
-		return nil, err
-	}
-	run.Periods = periods
-
-	return &run, nil
-}
-
-func (r *Repository) LatestActiveAlerts(ctx context.Context) (*model.WeatherAlertRun, error) {
-	if r == nil || r.db == nil {
-		return nil, fmt.Errorf("postgres repository is not configured")
-	}
-
-	var row alertRunParentRow
-	err := r.db.QueryRowContext(ctx, queryLatestAlertRun).Scan(
-		&row.EventID,
-		&row.LocationID,
-		&row.LocationName,
-		&row.AsOf,
-		&row.Latitude,
-		&row.Longitude,
-	)
-	if errors.Is(err, sql.ErrNoRows) {
-		return nil, nil
-	}
-	if err != nil {
-		return nil, fmt.Errorf("query latest alert run: %w", err)
-	}
-
-	run := mapAlertRunParentRow(row)
-
-	alerts, err := r.loadAlerts(ctx, row.EventID)
-	if err != nil {
-		return nil, err
-	}
-	run.Alerts = alerts
-
-	return &run, nil
-}
-
-func (r *Repository) loadObservationPresentWeather(ctx context.Context, eventID string) ([]model.PresentWeather, error) {
-	rows, err := r.db.QueryContext(ctx, queryObservationPresentWeather, eventID)
-	if err != nil {
-		return nil, fmt.Errorf("query observation present weather: %w", err)
-	}
-	defer rows.Close()
-
-	out := make([]model.PresentWeather, 0)
-	for rows.Next() {
-		var row observationPresentWeatherRow
-		if err := rows.Scan(&row.WeatherIndex, &row.RawText); err != nil {
-			return nil, fmt.Errorf("scan observation present weather row: %w", err)
-		}
-		pw, err := mapObservationPresentWeatherRow(row)
-		if err != nil {
-			return nil, fmt.Errorf("decode observation present weather row (index=%d): %w", row.WeatherIndex, err)
-		}
-		out = append(out, pw)
-	}
-	if err := rows.Err(); err != nil {
-		return nil, fmt.Errorf("iterate observation present weather rows: %w", err)
-	}
-	return out, nil
-}
-
-func (r *Repository) loadForecastPeriods(ctx context.Context, eventID string) ([]model.WeatherForecastPeriod, error) {
-	rows, err := r.db.QueryContext(ctx, queryForecastPeriods, eventID)
-	if err != nil {
-		return nil, fmt.Errorf("query forecast periods: %w", err)
-	}
-	defer rows.Close()
-
-	out := make([]model.WeatherForecastPeriod, 0)
-	for rows.Next() {
-		var row forecastPeriodRow
-		if err := rows.Scan(
-			&row.PeriodIndex,
-			&row.StartTime,
-			&row.EndTime,
-			&row.Name,
-			&row.IsDay,
-			&row.ConditionCode,
-			&row.ConditionText,
-			&row.ProviderRawDescription,
-			&row.TextDescription,
-			&row.DetailedText,
-			&row.IconURL,
-			&row.TemperatureC,
-			&row.TemperatureCMin,
-			&row.TemperatureCMax,
-			&row.DewpointC,
-			&row.RelativeHumidityPercent,
-			&row.WindDirectionDegrees,
-			&row.WindSpeedKmh,
-			&row.WindGustKmh,
-			&row.BarometricPressurePa,
-			&row.VisibilityMeters,
-			&row.ApparentTemperatureC,
-			&row.CloudCoverPercent,
-			&row.ProbabilityOfPrecipitationPercent,
-			&row.PrecipitationAmountMM,
-			&row.SnowfallDepthMM,
-			&row.UVIndex,
-		); err != nil {
-			return nil, fmt.Errorf("scan forecast period row: %w", err)
-		}
-		out = append(out, mapForecastPeriodRow(row))
-	}
-	if err := rows.Err(); err != nil {
-		return nil, fmt.Errorf("iterate forecast period rows: %w", err)
-	}
-	return out, nil
-}
-
-func (r *Repository) loadAlerts(ctx context.Context, eventID string) ([]model.WeatherAlert, error) {
-	alertsRows, err := r.db.QueryContext(ctx, queryAlerts, eventID)
-	if err != nil {
-		return nil, fmt.Errorf("query alerts: %w", err)
-	}
-	defer alertsRows.Close()
-
-	indexedAlerts := make([]indexedAlert, 0)
-	for alertsRows.Next() {
-		var row alertRow
-		if err := alertsRows.Scan(
-			&row.AlertIndex,
-			&row.AlertID,
-			&row.Event,
-			&row.Headline,
-			&row.Severity,
-			&row.Urgency,
-			&row.Certainty,
-			&row.Status,
-			&row.MessageType,
-			&row.Category,
-			&row.Response,
-			&row.Description,
-			&row.Instruction,
-			&row.Sent,
-			&row.Effective,
-			&row.Onset,
-			&row.Expires,
-			&row.AreaDescription,
-			&row.SenderName,
-		); err != nil {
-			return nil, fmt.Errorf("scan alerts row: %w", err)
-		}
-		indexedAlerts = append(indexedAlerts, mapAlertRow(row))
-	}
-	if err := alertsRows.Err(); err != nil {
-		return nil, fmt.Errorf("iterate alerts rows: %w", err)
-	}
-
-	referenceRows, err := r.db.QueryContext(ctx, queryAlertReferences, eventID)
-	if err != nil {
-		return nil, fmt.Errorf("query alert references: %w", err)
-	}
-	defer referenceRows.Close()
-
-	indexedReferences := make([]indexedAlertReference, 0)
-	for referenceRows.Next() {
-		var row alertReferenceRow
-		if err := referenceRows.Scan(
-			&row.AlertIndex,
-			&row.ID,
-			&row.Identifier,
-			&row.Sender,
-			&row.Sent,
-		); err != nil {
-			return nil, fmt.Errorf("scan alert reference row: %w", err)
-		}
-		indexedReferences = append(indexedReferences, mapAlertReferenceRow(row))
-	}
-	if err := referenceRows.Err(); err != nil {
-		return nil, fmt.Errorf("iterate alert reference rows: %w", err)
-	}
-
-	return attachAlertReferences(indexedAlerts, indexedReferences), nil
-}
-
-type observationParentRow struct {
-	EventID                 string
-	StationID               sql.NullString
-	StationName             sql.NullString
-	ObservedAt              time.Time
-	ConditionCode           int
-	IsDay                   sql.NullBool
-	TextDescription         sql.NullString
-	TemperatureC            sql.NullFloat64
-	DewpointC               sql.NullFloat64
-	WindDirectionDegrees    sql.NullFloat64
-	WindSpeedKmh            sql.NullFloat64
-	WindGustKmh             sql.NullFloat64
-	BarometricPressurePa    sql.NullFloat64
-	VisibilityMeters        sql.NullFloat64
-	RelativeHumidityPercent sql.NullFloat64
-	ApparentTemperatureC    sql.NullFloat64
-}
-
-type currentConditionsRow struct {
-	SampleCount             int64
-	TemperatureC            sql.NullFloat64
-	ApparentTemperatureC    sql.NullFloat64
-	DewpointC               sql.NullFloat64
-	RelativeHumidityPercent sql.NullFloat64
-	WindSpeedKmh            sql.NullFloat64
-	WindDirectionDegrees    sql.NullFloat64
-	ConditionCode           sql.NullInt64
-	IsDay                   sql.NullBool
-}
-
-func mapCurrentConditionsRow(row currentConditionsRow) *core.CurrentConditions {
-	if row.SampleCount == 0 {
-		return nil
-	}
-
-	conditionCode := model.WMOUnknown
-	if row.ConditionCode.Valid {
-		conditionCode = model.WMOCode(row.ConditionCode.Int64)
-	}
-
-	return &core.CurrentConditions{
-		TemperatureC:            float64Ptr(row.TemperatureC),
-		ApparentTemperatureC:    float64Ptr(row.ApparentTemperatureC),
-		DewpointC:               float64Ptr(row.DewpointC),
-		RelativeHumidityPercent: float64Ptr(row.RelativeHumidityPercent),
-		WindSpeedKmh:            float64Ptr(row.WindSpeedKmh),
-		WindDirectionDegrees:    float64Ptr(row.WindDirectionDegrees),
-		ConditionCode:           conditionCode,
-		IsDay:                   boolPtr(row.IsDay),
-	}
-}
-
-func mapObservationParentRow(row observationParentRow) model.WeatherObservation {
-	return model.WeatherObservation{
-		StationID:               stringValue(row.StationID),
-		StationName:             stringValue(row.StationName),
-		Timestamp:               row.ObservedAt.UTC(),
-		ConditionCode:           model.WMOCode(row.ConditionCode),
-		IsDay:                   boolPtr(row.IsDay),
-		TextDescription:         stringValue(row.TextDescription),
-		TemperatureC:            float64Ptr(row.TemperatureC),
-		DewpointC:               float64Ptr(row.DewpointC),
-		WindDirectionDegrees:    float64Ptr(row.WindDirectionDegrees),
-		WindSpeedKmh:            float64Ptr(row.WindSpeedKmh),
-		WindGustKmh:             float64Ptr(row.WindGustKmh),
-		BarometricPressurePa:    float64Ptr(row.BarometricPressurePa),
-		VisibilityMeters:        float64Ptr(row.VisibilityMeters),
-		RelativeHumidityPercent: float64Ptr(row.RelativeHumidityPercent),
-		ApparentTemperatureC:    float64Ptr(row.ApparentTemperatureC),
-	}
-}
-
-type observationPresentWeatherRow struct {
-	WeatherIndex int
-	RawText      sql.NullString
-}
-
-func mapObservationPresentWeatherRow(row observationPresentWeatherRow) (model.PresentWeather, error) {
-	if !row.RawText.Valid || strings.TrimSpace(row.RawText.String) == "" {
-		return model.PresentWeather{}, nil
-	}
-
-	var raw map[string]any
-	if err := json.Unmarshal([]byte(row.RawText.String), &raw); err != nil {
-		return model.PresentWeather{}, err
-	}
-	return model.PresentWeather{Raw: raw}, nil
-}
-
-type forecastParentRow struct {
-	EventID         string
-	LocationID      sql.NullString
-	LocationName    sql.NullString
-	IssuedAt        time.Time
-	UpdatedAt       sql.NullTime
-	Product         string
-	Latitude        sql.NullFloat64
-	Longitude       sql.NullFloat64
-	ElevationMeters sql.NullFloat64
-}
-
-func mapForecastParentRow(row forecastParentRow) model.WeatherForecastRun {
-	return model.WeatherForecastRun{
-		LocationID:      stringValue(row.LocationID),
-		LocationName:    stringValue(row.LocationName),
-		IssuedAt:        row.IssuedAt.UTC(),
-		UpdatedAt:       timePtr(row.UpdatedAt),
-		Product:         model.ForecastProduct(row.Product),
-		Latitude:        float64Ptr(row.Latitude),
-		Longitude:       float64Ptr(row.Longitude),
-		ElevationMeters: float64Ptr(row.ElevationMeters),
-	}
-}
-
-type forecastPeriodRow struct {
-	PeriodIndex                       int
-	StartTime                         time.Time
-	EndTime                           time.Time
-	Name                              sql.NullString
-	IsDay                             sql.NullBool
-	ConditionCode                     int
-	ConditionText                     sql.NullString
-	ProviderRawDescription            sql.NullString
-	TextDescription                   sql.NullString
-	DetailedText                      sql.NullString
-	IconURL                           sql.NullString
-	TemperatureC                      sql.NullFloat64
-	TemperatureCMin                   sql.NullFloat64
-	TemperatureCMax                   sql.NullFloat64
-	DewpointC                         sql.NullFloat64
-	RelativeHumidityPercent           sql.NullFloat64
-	WindDirectionDegrees              sql.NullFloat64
-	WindSpeedKmh                      sql.NullFloat64
-	WindGustKmh                       sql.NullFloat64
-	BarometricPressurePa              sql.NullFloat64
-	VisibilityMeters                  sql.NullFloat64
-	ApparentTemperatureC              sql.NullFloat64
-	CloudCoverPercent                 sql.NullFloat64
-	ProbabilityOfPrecipitationPercent sql.NullFloat64
-	PrecipitationAmountMM             sql.NullFloat64
-	SnowfallDepthMM                   sql.NullFloat64
-	UVIndex                           sql.NullFloat64
-}
-
-func mapForecastPeriodRow(row forecastPeriodRow) model.WeatherForecastPeriod {
-	return model.WeatherForecastPeriod{
-		StartTime:                         row.StartTime.UTC(),
-		EndTime:                           row.EndTime.UTC(),
-		Name:                              stringValue(row.Name),
-		IsDay:                             boolPtr(row.IsDay),
-		ConditionCode:                     model.WMOCode(row.ConditionCode),
-		ConditionText:                     stringValue(row.ConditionText),
-		ProviderRawDescription:            stringValue(row.ProviderRawDescription),
-		TextDescription:                   stringValue(row.TextDescription),
-		DetailedText:                      stringValue(row.DetailedText),
-		IconURL:                           stringValue(row.IconURL),
-		TemperatureC:                      float64Ptr(row.TemperatureC),
-		TemperatureCMin:                   float64Ptr(row.TemperatureCMin),
-		TemperatureCMax:                   float64Ptr(row.TemperatureCMax),
-		DewpointC:                         float64Ptr(row.DewpointC),
-		RelativeHumidityPercent:           float64Ptr(row.RelativeHumidityPercent),
-		WindDirectionDegrees:              float64Ptr(row.WindDirectionDegrees),
-		WindSpeedKmh:                      float64Ptr(row.WindSpeedKmh),
-		WindGustKmh:                       float64Ptr(row.WindGustKmh),
-		BarometricPressurePa:              float64Ptr(row.BarometricPressurePa),
-		VisibilityMeters:                  float64Ptr(row.VisibilityMeters),
-		ApparentTemperatureC:              float64Ptr(row.ApparentTemperatureC),
-		CloudCoverPercent:                 float64Ptr(row.CloudCoverPercent),
-		ProbabilityOfPrecipitationPercent: float64Ptr(row.ProbabilityOfPrecipitationPercent),
-		PrecipitationAmountMm:             float64Ptr(row.PrecipitationAmountMM),
-		SnowfallDepthMM:                   float64Ptr(row.SnowfallDepthMM),
-		UVIndex:                           float64Ptr(row.UVIndex),
-	}
-}
-
-type alertRunParentRow struct {
-	EventID      string
-	LocationID   sql.NullString
-	LocationName sql.NullString
-	AsOf         time.Time
-	Latitude     sql.NullFloat64
-	Longitude    sql.NullFloat64
-}
-
-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),
-	}
-}
-
-type alertRow struct {
-	AlertIndex      int
-	AlertID         string
-	Event           sql.NullString
-	Headline        sql.NullString
-	Severity        sql.NullString
-	Urgency         sql.NullString
-	Certainty       sql.NullString
-	Status          sql.NullString
-	MessageType     sql.NullString
-	Category        sql.NullString
-	Response        sql.NullString
-	Description     sql.NullString
-	Instruction     sql.NullString
-	Sent            sql.NullTime
-	Effective       sql.NullTime
-	Onset           sql.NullTime
-	Expires         sql.NullTime
-	AreaDescription sql.NullString
-	SenderName      sql.NullString
-}
-
-type indexedAlert struct {
-	Index int
-	Alert model.WeatherAlert
-}
-
-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),
-		},
-	}
-}
-
-type alertReferenceRow struct {
-	AlertIndex int
-	ID         sql.NullString
-	Identifier sql.NullString
-	Sender     sql.NullString
-	Sent       sql.NullTime
-}
-
-type indexedAlertReference struct {
-	AlertIndex int
-	Reference  model.AlertReference
-}
-
-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
-}
-
-func stringValue(v sql.NullString) string {
-	if !v.Valid {
-		return ""
-	}
-	return v.String
-}
-
-func boolPtr(v sql.NullBool) *bool {
-	if !v.Valid {
-		return nil
-	}
-	b := v.Bool
-	return &b
-}
-
-func float64Ptr(v sql.NullFloat64) *float64 {
-	if !v.Valid {
-		return nil
-	}
-	f := v.Float64
-	return &f
-}
-
-func timePtr(v sql.NullTime) *time.Time {
-	if !v.Valid {
-		return nil
-	}
-	t := v.Time.UTC()
-	return &t
-}

internal/adapters/outbound/postgres/repository_test.go

@@ -1,3 +1,5 @@
+// repository_test.go validates Postgres row mapping and attachment helpers.
+// Layer: adapters/outbound/postgres mapper regression tests.
 package postgres
 
 import (

internal/adapters/outbound/postgres/scan_helpers.go

@@ -0,0 +1,39 @@
+// scan_helpers.go provides shared sql.Null* conversion helpers.
+// Layer: adapters/outbound/postgres helper utilities.
+package postgres
+
+import (
+	"database/sql"
+	"time"
+)
+
+func stringValue(v sql.NullString) string {
+	if !v.Valid {
+		return ""
+	}
+	return v.String
+}
+
+func boolPtr(v sql.NullBool) *bool {
+	if !v.Valid {
+		return nil
+	}
+	b := v.Bool
+	return &b
+}
+
+func float64Ptr(v sql.NullFloat64) *float64 {
+	if !v.Valid {
+		return nil
+	}
+	f := v.Float64
+	return &f
+}
+
+func timePtr(v sql.NullTime) *time.Time {
+	if !v.Valid {
+		return nil
+	}
+	t := v.Time.UTC()
+	return &t
+}