Initial commit: Open sourcing all of the Maple Open Technologies code.

cloud/maplepress-backend/internal/usecase/tenant/delete.go

@@ -0,0 +1,60 @@
+package tenant
+
+import (
+	"context"
+	"fmt"
+
+	"go.uber.org/zap"
+
+	"codeberg.org/mapleopentech/monorepo/cloud/maplepress-backend/internal/domain/tenant"
+)
+
+// DeleteTenantUseCase handles tenant deletion operations
+// Used as compensating transaction in SAGA pattern
+type DeleteTenantUseCase struct {
+	repo   tenant.Repository
+	logger *zap.Logger
+}
+
+// ProvideDeleteTenantUseCase creates a new DeleteTenantUseCase for dependency injection
+func ProvideDeleteTenantUseCase(
+	repo tenant.Repository,
+	logger *zap.Logger,
+) *DeleteTenantUseCase {
+	return &DeleteTenantUseCase{
+		repo:   repo,
+		logger: logger.Named("delete-tenant-usecase"),
+	}
+}
+
+// Execute deletes a tenant by ID
+// This is used as a compensating transaction when registration fails
+//
+// IMPORTANT: This operation must be idempotent!
+// If called multiple times with the same ID, it should not error
+func (uc *DeleteTenantUseCase) Execute(ctx context.Context, tenantID string) error {
+	uc.logger.Info("deleting tenant",
+		zap.String("tenant_id", tenantID))
+
+	// Validate input
+	if tenantID == "" {
+		return fmt.Errorf("tenant ID cannot be empty")
+	}
+
+	// Execute deletion using existing repository method
+	// The repository handles deletion from all denormalized tables:
+	// - tenants_by_id
+	// - tenants_by_slug
+	// - tenants_by_status
+	if err := uc.repo.Delete(ctx, tenantID); err != nil {
+		uc.logger.Error("failed to delete tenant",
+			zap.String("tenant_id", tenantID),
+			zap.Error(err))
+		return fmt.Errorf("failed to delete tenant: %w", err)
+	}
+
+	uc.logger.Info("tenant deleted successfully",
+		zap.String("tenant_id", tenantID))
+
+	return nil
+}