Improve placement of Todos and Conditions in Day view.

[plomtask] / plomtask / todos.py

diff --git a/plomtask/todos.py b/plomtask/todos.py
index ebe35ac56bb78af42a10644c9209b34778527c0e..336ec0350830ce5dfbdf5e85a92b3945608835d9 100644 (file)
--- a/plomtask/todos.py
+++ b/plomtask/todos.py
@@ -1,15 +1,20 @@
 """Actionables."""
 from __future__ import annotations
+from collections import namedtuple
 from typing import Any
 from sqlite3 import Row
 from plomtask.db import DatabaseConnection, BaseModel
 from plomtask.processes import Process
-from plomtask.conditions import Condition
+from plomtask.conditions import Condition, ConditionsRelations
 from plomtask.exceptions import (NotFoundException, BadFormatException,
                                  HandledException)
 
 
-class Todo(BaseModel):
+TodoStepsNode = namedtuple('TodoStepsNode',
+                           ('item', 'is_todo', 'children', 'seen'))
+
+
+class Todo(BaseModel, ConditionsRelations):
     """Individual actionable."""
 
     # pylint: disable=too-many-instance-attributes
@@ -134,24 +139,35 @@ class Todo(BaseModel):
                 for condition in self.disables:
                     condition.is_active = False
 
-    def set_disables(self, db_conn: DatabaseConnection,
-                     ids: list[int]) -> None:
-        """Set self.disables to Conditions identified by ids."""
-        self.set_conditions(db_conn, ids, 'disables')
-
-    def set_enables(self, db_conn: DatabaseConnection,
-                    ids: list[int]) -> None:
-        """Set self.enables to Conditions identified by ids."""
-        self.set_conditions(db_conn, ids, 'enables')
-
-    def set_conditions(self, db_conn: DatabaseConnection, ids: list[int],
-                       target: str = 'conditions') -> None:
-        """Set self.[target] to Conditions identified by ids."""
-        target_list = getattr(self, target)
-        while len(target_list) > 0:
-            target_list.pop()
-        for id_ in ids:
-            target_list += [Condition.by_id(db_conn, id_)]
+    def get_step_tree(self, seen_todos: set[int],
+                      seen_conditions: set[int]) -> TodoStepsNode:
+        """Return tree of depended-on Todos and Conditions."""
+
+        def make_node(step: Todo | Condition) -> TodoStepsNode:
+            assert isinstance(step.id_, int)
+            is_todo = isinstance(step, Todo)
+            children = []
+            if is_todo:
+                assert isinstance(step, Todo)
+                seen = step.id_ in seen_todos
+                seen_todos.add(step.id_)
+                potentially_enabled = set()
+                for child in step.children:
+                    for condition in child.enables:
+                        potentially_enabled.add(condition)
+                    children += [make_node(child)]
+                for condition in [c for c in step.conditions
+                                  if (not c.is_active)
+                                  and (c not in potentially_enabled)]:
+                    children += [make_node(condition)]
+            else:
+                assert isinstance(step, Condition)
+                seen = step.id_ in seen_conditions
+                seen_conditions.add(step.id_)
+            return TodoStepsNode(step, is_todo, children, seen)
+
+        node = make_node(self)
+        return node
 
     def add_child(self, child: Todo) -> None:
         """Add child to self.children, guard against recursion"""