Adding Parent Account validation

api/app/account/models.py

@@ -17,7 +17,7 @@ class AccountBaseId(AccountBase):
     id: UUID | None = Field(default_factory=uuid4, primary_key=True)
     family: str = Field(index=True)
     type: str = Field(index=True)
-    path: str = Field(index=True)
+    path: str = Field(index=True, unique=True)
 
 class Account(AccountBaseId, table=True):
     parent_account: Optional["Account"] = Relationship(
@@ -40,12 +40,19 @@ class Account(AccountBaseId, table=True):
     def is_category(self):
         return self.type in [v.value for v in CategoryType]
 
+    def get_parent(self, session):
+        if self.parent_account_id is None:
+            return None
+
+        self.parent_account = self.get(session, self.parent_account_id)
+        return self.parent_account
+
     def get_path(self, session):
         if self.parent_account_id is None:
             return self.get_root_path()
 
-        parent = self.get(session, self.parent_account_id)
+        self.parent_account = self.get(session, self.parent_account_id)
-        return parent.get_child_path()
+        return self.parent_account.get_child_path()
 
     def get_family(self):
         if self.type in Asset:
@@ -67,9 +74,27 @@ class Account(AccountBaseId, table=True):
             print(e)
 
         model.family = model.get_family()
+        cls.validate_parent(session, model)
         model.path = model.get_path(session)
         return model
 
+    @classmethod
+    def validate_parent(cls, session, model):
+        if model.parent_account_id is None:
+            return True
+
+        parent = model.get_parent(session)
+        if not parent:
+            raise ValueError("Parent account not found.")
+
+        if parent.family != model.family:
+            raise ValueError("Account family mismatch with parent account..")
+
+        if parent.path.startswith(model.path):
+            raise ValueError("Parent Account is descendant")
+
+        return True
+
     @classmethod
     def create(cls, account, session):
         account_db = cls.schema_to_model(session, account)