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

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

@@ -0,0 +1,61 @@
+package user
+
+import (
+	"context"
+	"fmt"
+
+	"go.uber.org/zap"
+
+	"codeberg.org/mapleopentech/monorepo/cloud/maplepress-backend/internal/domain/user"
+)
+
+// DeleteUserUseCase handles user deletion operations
+// Used as compensating transaction in SAGA pattern
+type DeleteUserUseCase struct {
+	repo   user.Repository
+	logger *zap.Logger
+}
+
+// ProvideDeleteUserUseCase creates a new DeleteUserUseCase for dependency injection
+func ProvideDeleteUserUseCase(
+	repo user.Repository,
+	logger *zap.Logger,
+) *DeleteUserUseCase {
+	return &DeleteUserUseCase{
+		repo:   repo,
+		logger: logger.Named("delete-user-usecase"),
+	}
+}
+
+// Execute deletes a user by ID within a tenant
+// This is used as a compensating transaction
+//
+// IMPORTANT: This operation must be idempotent!
+func (uc *DeleteUserUseCase) Execute(ctx context.Context, tenantID, userID string) error {
+	uc.logger.Info("deleting user",
+		zap.String("tenant_id", tenantID),
+		zap.String("user_id", userID))
+
+	// Validate inputs
+	if tenantID == "" {
+		return fmt.Errorf("tenant ID cannot be empty")
+	}
+	if userID == "" {
+		return fmt.Errorf("user ID cannot be empty")
+	}
+
+	// Execute deletion using repository
+	if err := uc.repo.Delete(ctx, tenantID, userID); err != nil {
+		uc.logger.Error("failed to delete user",
+			zap.String("tenant_id", tenantID),
+			zap.String("user_id", userID),
+			zap.Error(err))
+		return fmt.Errorf("failed to delete user: %w", err)
+	}
+
+	uc.logger.Info("user deleted successfully",
+		zap.String("tenant_id", tenantID),
+		zap.String("user_id", userID))
+
+	return nil
+}