X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=plomtask%2Fconditions.py;h=d2559272cd876c5b071b59437998e3356409cd07;hb=77e9d9dfa5681bc32e8aec8558d0fa449805e3ac;hp=a45260092fdc6c75a94846eb0893b775eb9316dd;hpb=ee18435127ad396c24dbee2c7efcdbe6810d5a91;p=plomtask

diff --git a/plomtask/conditions.py b/plomtask/conditions.py
index a452600..d255927 100644
--- a/plomtask/conditions.py
+++ b/plomtask/conditions.py
@@ -3,13 +3,16 @@ from __future__ import annotations
 from typing import Any
 from sqlite3 import Row
 from plomtask.db import DatabaseConnection, BaseModel
-from plomtask.misc import VersionedAttribute
+from plomtask.versioned_attributes import VersionedAttribute
+from plomtask.exceptions import HandledException
 
 
 class Condition(BaseModel[int]):
     """Non-Process dependency for ProcessSteps and Todos."""
     table_name = 'conditions'
     to_save = ['is_active']
+    to_save_versioned = ['title', 'description']
+    to_search = ['title.newest', 'description.newest']
 
     def __init__(self, id_: int | None, is_active: bool = False) -> None:
         super().__init__(id_)
@@ -29,16 +32,31 @@ class Condition(BaseModel[int]):
                 getattr(condition, name).history_from_row(row_)
         return condition
 
-    def save(self, db_conn: DatabaseConnection) -> None:
-        """Save self and its VersionedAttributes to DB and cache."""
-        self.save_core(db_conn)
-        self.title.save(db_conn)
-        self.description.save(db_conn)
+    def remove(self, db_conn: DatabaseConnection) -> None:
+        """Remove from DB, with VersionedAttributes.
+
+        Checks for Todos and Processes that depend on Condition, prohibits
+        deletion if found.
+        """
+        if self.id_ is None:
+            raise HandledException('cannot remove unsaved item')
+        for item in ('process', 'todo'):
+            for attr in ('conditions', 'blockers', 'enables', 'disables'):
+                table_name = f'{item}_{attr}'
+                for _ in db_conn.row_where(table_name, 'condition', self.id_):
+                    raise HandledException('cannot remove Condition in use')
+        super().remove(db_conn)
 
 
 class ConditionsRelations:
     """Methods for handling relations to Conditions, for Todo and Process."""
 
+    def __init__(self) -> None:
+        self.conditions: list[Condition] = []
+        self.blockers: list[Condition] = []
+        self.enables: list[Condition] = []
+        self.disables: list[Condition] = []
+
     def set_conditions(self, db_conn: DatabaseConnection, ids: list[int],
                        target: str = 'conditions') -> None:
         """Set self.[target] to Conditions identified by ids."""
@@ -48,6 +66,11 @@ class ConditionsRelations:
         for id_ in ids:
             target_list += [Condition.by_id(db_conn, id_)]
 
+    def set_blockers(self, db_conn: DatabaseConnection,
+                     ids: list[int]) -> None:
+        """Set self.enables to Conditions identified by ids."""
+        self.set_conditions(db_conn, ids, 'blockers')
+
     def set_enables(self, db_conn: DatabaseConnection,
                     ids: list[int]) -> None:
         """Set self.enables to Conditions identified by ids."""