"""Actionables."""
from __future__ import annotations
+from dataclasses import dataclass
from typing import Any
from sqlite3 import Row
from plomtask.db import DatabaseConnection, BaseModel
HandledException)
+@dataclass
+class TodoStepsNode:
+ """Collects what's useful to know for Todo/Condition tree display."""
+ item: Todo | Condition
+ is_todo: bool
+ children: list[TodoStepsNode]
+ seen: bool
+
+
class Todo(BaseModel, ConditionsRelations):
"""Individual actionable."""
for condition in self.disables:
condition.is_active = False
+ 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"""
+ """Add child to self.children, avoid recursion, update parenthoods."""
+
def walk_steps(node: Todo) -> None:
if node.id_ == self.id_:
raise BadFormatException('bad child choice causes recursion')
for child in node.children:
walk_steps(child)
+
if self.id_ is None:
raise HandledException('Can only add children to saved Todos.')
if child.id_ is None:
self.children += [child]
child.parents += [self]
+ def remove_child(self, child: Todo) -> None:
+ """Remove child from self.children, update counter relations."""
+ if child not in self.children:
+ raise HandledException('Cannot remove un-parented child.')
+ self.children.remove(child)
+ child.parents.remove(self)
+
def save(self, db_conn: DatabaseConnection) -> None:
"""Write self and children to DB and its cache."""
if self.process.id_ is None: