package example

import (
	"context"
	"fmt"

	"github.com/jackc/pgx/v5/pgxpool"
)

// AddressStore ist das Integrationstest-Beispiel (QA-01): eine
// minimale, aber echte DB-gestützte Komponente — nutzt dieselbe
// Tenant-DB-Isolationskonvention wie DMS/Archive (t.Cleanup, geteilte
// physische Postgres-Instanz auf dem Testhost).
type AddressStore struct {
	pool *pgxpool.Pool
}

func NewAddressStore(pool *pgxpool.Pool) *AddressStore {
	return &AddressStore{pool: pool}
}

func (s *AddressStore) SaveNormalized(ctx context.Context, addr string) (string, error) {
	normalized, err := NormalizeAddress(addr)
	if err != nil {
		return "", err
	}
	if _, err := s.pool.Exec(ctx, `
		INSERT INTO example_addresses (address) VALUES ($1)
		ON CONFLICT (address) DO NOTHING
	`, normalized); err != nil {
		return "", fmt.Errorf("example: adresse speichern: %w", err)
	}
	return normalized, nil
}

func (s *AddressStore) Exists(ctx context.Context, addr string) (bool, error) {
	var exists bool
	if err := s.pool.QueryRow(ctx, `SELECT EXISTS(SELECT 1 FROM example_addresses WHERE address = $1)`, addr).Scan(&exists); err != nil {
		return false, fmt.Errorf("example: existenz prüfen: %w", err)
	}
	return exists, nil
}