X-Git-Url: https://plomlompom.com/repos/%7B%7B%20web_path%20%7D%7D/decks/%7B%7Bdeck_id%7D%7D/cards/%7B%7Bcard_id%7D%7D/static/git-logo.png?a=blobdiff_plain;f=plomtask%2Fconditions.py;h=b60d0af53c534c4672241bb8f853c3f537d55ecb;hb=25b71c6f0b10db05907128daf50c6e543e514c35;hp=66961256e28ad2843ae9d72ba9babbbd552b6f60;hpb=8570f4ce4d44b813a1f02b72c5c45a57d2003bae;p=plomtask

diff --git a/plomtask/conditions.py b/plomtask/conditions.py
index 6696125..b60d0af 100644
--- a/plomtask/conditions.py
+++ b/plomtask/conditions.py
@@ -1,15 +1,17 @@
 """Non-doable elements of ProcessStep/Todo chains."""
 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."""
+    """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']
+    can_create_by_id = True
 
     def __init__(self, id_: int | None, is_active: bool = False) -> None:
         super().__init__(id_)
@@ -18,27 +20,32 @@ class Condition(BaseModel[int]):
         self.description = VersionedAttribute(self, 'condition_descriptions',
                                               '')
 
-    @classmethod
-    def from_table_row(cls, db_conn: DatabaseConnection,
-                       row: Row | list[Any]) -> Condition:
-        """Build condition from row, including VersionedAttributes."""
-        condition = super().from_table_row(db_conn, row)
-        for name in ('title', 'description'):
-            table_name = f'condition_{name}s'
-            for row_ in db_conn.row_where(table_name, 'parent', row[0]):
-                getattr(condition, name).history_from_row(row_)
-        return condition
+    def remove(self, db_conn: DatabaseConnection) -> None:
+        """Remove from DB, with VersionedAttributes.
 
-    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)
+        Checks for Todos and Processes that depend on Condition, prohibits
+        deletion if found.
+        """
+        if self.id_ is not None:
+            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_):
+                        msg = 'cannot remove Condition in use'
+                        raise HandledException(msg)
+        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 +55,11 @@ 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."""