feat: drive visible payment methods from enabled providers

backend/internal/service/payment_config_providers_test.go

@@ -3,8 +3,10 @@
 package service
 
 import (
+	"context"
 	"testing"
 
+	infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -185,3 +187,104 @@ func TestJoinTypes(t *testing.T) {
 		})
 	}
 }
+
+func TestCreateProviderInstanceRejectsConflictingVisibleMethodEnablement(t *testing.T) {
+	t.Parallel()
+
+	ctx := context.Background()
+	client := newPaymentConfigServiceTestClient(t)
+	svc := &PaymentConfigService{
+		entClient:     client,
+		encryptionKey: []byte("0123456789abcdef0123456789abcdef"),
+	}
+
+	_, err := svc.CreateProviderInstance(ctx, CreateProviderInstanceRequest{
+		ProviderKey:    "easypay",
+		Name:           "EasyPay Alipay",
+		Config:         map[string]string{"pid": "1001"},
+		SupportedTypes: []string{"alipay"},
+		Enabled:        true,
+	})
+	require.NoError(t, err)
+
+	_, err = svc.CreateProviderInstance(ctx, CreateProviderInstanceRequest{
+		ProviderKey:    "alipay",
+		Name:           "Official Alipay",
+		Config:         map[string]string{"appId": "app-1"},
+		SupportedTypes: []string{"alipay"},
+		Enabled:        true,
+	})
+	require.Error(t, err)
+	require.Equal(t, "PAYMENT_PROVIDER_CONFLICT", infraerrors.Reason(err))
+}
+
+func TestUpdateProviderInstanceRejectsEnablingConflictingVisibleMethodProvider(t *testing.T) {
+	t.Parallel()
+
+	ctx := context.Background()
+	client := newPaymentConfigServiceTestClient(t)
+	svc := &PaymentConfigService{
+		entClient:     client,
+		encryptionKey: []byte("0123456789abcdef0123456789abcdef"),
+	}
+
+	existing, err := svc.CreateProviderInstance(ctx, CreateProviderInstanceRequest{
+		ProviderKey:    "easypay",
+		Name:           "EasyPay WeChat",
+		Config:         map[string]string{"pid": "2001"},
+		SupportedTypes: []string{"wxpay"},
+		Enabled:        true,
+	})
+	require.NoError(t, err)
+	require.NotNil(t, existing)
+
+	candidate, err := svc.CreateProviderInstance(ctx, CreateProviderInstanceRequest{
+		ProviderKey:    "wxpay",
+		Name:           "Official WeChat",
+		Config:         map[string]string{"appId": "wx-app"},
+		SupportedTypes: []string{"wxpay"},
+		Enabled:        false,
+	})
+	require.NoError(t, err)
+
+	_, err = svc.UpdateProviderInstance(ctx, candidate.ID, UpdateProviderInstanceRequest{
+		Enabled: boolPtrValue(true),
+	})
+	require.Error(t, err)
+	require.Equal(t, "PAYMENT_PROVIDER_CONFLICT", infraerrors.Reason(err))
+}
+
+func TestUpdateProviderInstancePersistsEnabledAndSupportedTypes(t *testing.T) {
+	t.Parallel()
+
+	ctx := context.Background()
+	client := newPaymentConfigServiceTestClient(t)
+	svc := &PaymentConfigService{
+		entClient:     client,
+		encryptionKey: []byte("0123456789abcdef0123456789abcdef"),
+	}
+
+	instance, err := svc.CreateProviderInstance(ctx, CreateProviderInstanceRequest{
+		ProviderKey:    "easypay",
+		Name:           "EasyPay",
+		Config:         map[string]string{"pid": "3001"},
+		SupportedTypes: []string{"alipay"},
+		Enabled:        false,
+	})
+	require.NoError(t, err)
+
+	_, err = svc.UpdateProviderInstance(ctx, instance.ID, UpdateProviderInstanceRequest{
+		Enabled:        boolPtrValue(true),
+		SupportedTypes: []string{"alipay", "wxpay"},
+	})
+	require.NoError(t, err)
+
+	saved, err := client.PaymentProviderInstance.Get(ctx, instance.ID)
+	require.NoError(t, err)
+	require.True(t, saved.Enabled)
+	require.Equal(t, "alipay,wxpay", saved.SupportedTypes)
+}
+
+func boolPtrValue(v bool) *bool {
+	return &v
+}