package notificationstore

import (
	"context"
	"database/sql"
	"time"

	pgtable "galaxy/notification/internal/adapters/postgres/jet/notification/table"
)

// deadLetterRow stores the column values written to one dead_letters row.
// Kept package-private because the public surface is the routestate
// CompleteRouteDeadLetterInput shape; this struct is only the on-disk
// projection.
type deadLetterRow struct {
	NotificationID        string
	RouteID               string
	Channel               string
	RecipientRef          string
	FinalAttemptCount     int
	MaxAttempts           int
	FailureClassification string
	FailureMessage        string
	RecoveryHint          string
	CreatedAt             time.Time
}

// insertDeadLetter writes one dead-letter audit row inside an open
// transaction. The composite PRIMARY KEY guards against duplicate inserts
// for the same `(notification_id, route_id)` pair.
func insertDeadLetter(ctx context.Context, tx *sql.Tx, row deadLetterRow) error {
	stmt := pgtable.DeadLetters.INSERT(
		pgtable.DeadLetters.NotificationID,
		pgtable.DeadLetters.RouteID,
		pgtable.DeadLetters.Channel,
		pgtable.DeadLetters.RecipientRef,
		pgtable.DeadLetters.FinalAttemptCount,
		pgtable.DeadLetters.MaxAttempts,
		pgtable.DeadLetters.FailureClassification,
		pgtable.DeadLetters.FailureMessage,
		pgtable.DeadLetters.RecoveryHint,
		pgtable.DeadLetters.CreatedAt,
	).VALUES(
		row.NotificationID,
		row.RouteID,
		row.Channel,
		row.RecipientRef,
		row.FinalAttemptCount,
		row.MaxAttempts,
		row.FailureClassification,
		row.FailureMessage,
		row.RecoveryHint,
		row.CreatedAt.UTC(),
	)

	query, args := stmt.Sql()
	if _, err := tx.ExecContext(ctx, query, args...); err != nil {
		return err
	}
	return nil
}