feat: sync login email verification support

internal/store/postgres/account_login_email_integration_test.go

@@ -0,0 +1,40 @@
+package postgres
+
+import (
+	"context"
+	"errors"
+	"testing"
+
+	"telesrv/internal/domain"
+)
+
+func TestPasswordStoreLoginEmailUniqueCaseInsensitivePostgres(t *testing.T) {
+	pool := testPool(t)
+	ctx := context.Background()
+	passwords := NewPasswordStore(pool)
+	users := NewUserStore(pool)
+	suffix := randomSuffix(t)
+	u1, err := users.Create(ctx, domain.User{AccessHash: 101, Phone: "+1665" + suffix + "01", FirstName: "EmailOne"})
+	if err != nil {
+		t.Fatalf("create user1: %v", err)
+	}
+	u2, err := users.Create(ctx, domain.User{AccessHash: 102, Phone: "+1665" + suffix + "02", FirstName: "EmailTwo"})
+	if err != nil {
+		t.Fatalf("create user2: %v", err)
+	}
+	t.Cleanup(func() {
+		_, _ = pool.Exec(ctx, "DELETE FROM account_passwords WHERE user_id = ANY($1::bigint[])", []int64{u1.ID, u2.ID})
+		_, _ = pool.Exec(ctx, "DELETE FROM users WHERE id = ANY($1::bigint[])", []int64{u1.ID, u2.ID})
+	})
+
+	if err := passwords.Save(ctx, u1.ID, domain.PasswordSettings{LoginEmail: "Owner@Example.Test"}); err != nil {
+		t.Fatalf("save user1 email: %v", err)
+	}
+	ownerID, found, err := passwords.LoginEmailOwner(ctx, "owner@example.test")
+	if err != nil || !found || ownerID != u1.ID {
+		t.Fatalf("LoginEmailOwner = id %d found %v err %v, want user1", ownerID, found, err)
+	}
+	if err := passwords.Save(ctx, u2.ID, domain.PasswordSettings{LoginEmail: "owner@example.test"}); !errors.Is(err, domain.ErrEmailOccupied) {
+		t.Fatalf("save duplicate email err = %v, want ErrEmailOccupied", err)
+	}
+}