Add user delete process

services/recipes/app/services/tenant_deletion_service.py

@@ -0,0 +1,134 @@
+"""
+Recipes Service - Tenant Data Deletion
+Handles deletion of all recipe-related data for a tenant
+"""
+from typing import Dict
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select, delete, func
+import structlog
+
+from shared.services.tenant_deletion import BaseTenantDataDeletionService, TenantDataDeletionResult
+from app.models.recipes import Recipe, RecipeIngredient, ProductionBatch
+
+logger = structlog.get_logger()
+
+
+class RecipesTenantDeletionService(BaseTenantDataDeletionService):
+    """Service for deleting all recipe-related data for a tenant"""
+
+    def __init__(self, db_session: AsyncSession):
+        super().__init__("recipes-service")
+        self.db = db_session
+
+    async def get_tenant_data_preview(self, tenant_id: str) -> Dict[str, int]:
+        """Get counts of what would be deleted"""
+
+        try:
+            preview = {}
+
+            # Count recipes
+            recipe_count = await self.db.scalar(
+                select(func.count(Recipe.id)).where(Recipe.tenant_id == tenant_id)
+            )
+            preview["recipes"] = recipe_count or 0
+
+            # Count recipe ingredients (will be deleted via CASCADE)
+            ingredient_count = await self.db.scalar(
+                select(func.count(RecipeIngredient.id))
+                .where(RecipeIngredient.tenant_id == tenant_id)
+            )
+            preview["recipe_ingredients"] = ingredient_count or 0
+
+            # Count production batches (will be deleted via CASCADE)
+            batch_count = await self.db.scalar(
+                select(func.count(ProductionBatch.id))
+                .where(ProductionBatch.tenant_id == tenant_id)
+            )
+            preview["production_batches"] = batch_count or 0
+
+            return preview
+
+        except Exception as e:
+            logger.error("Error getting deletion preview",
+                        tenant_id=tenant_id,
+                        error=str(e))
+            return {}
+
+    async def delete_tenant_data(self, tenant_id: str) -> TenantDataDeletionResult:
+        """Delete all data for a tenant"""
+
+        result = TenantDataDeletionResult(tenant_id, self.service_name)
+
+        try:
+            # Get preview before deletion for reporting
+            preview = await self.get_tenant_data_preview(tenant_id)
+
+            # Delete production batches first (foreign key to recipes)
+            try:
+                batch_delete = await self.db.execute(
+                    delete(ProductionBatch).where(ProductionBatch.tenant_id == tenant_id)
+                )
+                deleted_batches = batch_delete.rowcount
+                result.add_deleted_items("production_batches", deleted_batches)
+
+                logger.info("Deleted production batches for tenant",
+                           tenant_id=tenant_id,
+                           count=deleted_batches)
+
+            except Exception as e:
+                logger.error("Error deleting production batches",
+                           tenant_id=tenant_id,
+                           error=str(e))
+                result.add_error(f"Production batch deletion: {str(e)}")
+
+            # Delete recipe ingredients (foreign key to recipes)
+            try:
+                ingredient_delete = await self.db.execute(
+                    delete(RecipeIngredient).where(RecipeIngredient.tenant_id == tenant_id)
+                )
+                deleted_ingredients = ingredient_delete.rowcount
+                result.add_deleted_items("recipe_ingredients", deleted_ingredients)
+
+                logger.info("Deleted recipe ingredients for tenant",
+                           tenant_id=tenant_id,
+                           count=deleted_ingredients)
+
+            except Exception as e:
+                logger.error("Error deleting recipe ingredients",
+                           tenant_id=tenant_id,
+                           error=str(e))
+                result.add_error(f"Recipe ingredient deletion: {str(e)}")
+
+            # Delete recipes (parent table)
+            try:
+                recipe_delete = await self.db.execute(
+                    delete(Recipe).where(Recipe.tenant_id == tenant_id)
+                )
+                deleted_recipes = recipe_delete.rowcount
+                result.add_deleted_items("recipes", deleted_recipes)
+
+                logger.info("Deleted recipes for tenant",
+                           tenant_id=tenant_id,
+                           count=deleted_recipes)
+
+            except Exception as e:
+                logger.error("Error deleting recipes",
+                           tenant_id=tenant_id,
+                           error=str(e))
+                result.add_error(f"Recipe deletion: {str(e)}")
+
+            # Commit all deletions
+            await self.db.commit()
+
+            logger.info("Tenant data deletion completed",
+                       tenant_id=tenant_id,
+                       deleted_counts=result.deleted_counts)
+
+        except Exception as e:
+            logger.error("Fatal error during tenant data deletion",
+                        tenant_id=tenant_id,
+                        error=str(e))
+            await self.db.rollback()
+            result.add_error(f"Fatal error: {str(e)}")
+
+        return result