2 from __future__ import annotations
3 from sqlite3 import Row
4 from plomtask.db import DatabaseConnection
5 from plomtask.days import Day
6 from plomtask.processes import Process
7 from plomtask.exceptions import (NotFoundException, BadFormatException,
12 """Individual actionable."""
14 def __init__(self, id_: int | None, process: Process,
15 is_done: bool, day: Day) -> None:
17 self.process = process
18 self._is_done = is_done
20 self.children: list[Todo] = []
21 self.parents: list[Todo] = []
24 def from_table_row(cls, db_conn: DatabaseConnection, row: Row) -> Todo:
25 """Make Todo from database row, write to DB cache."""
26 todo = cls(id_=row[0],
27 process=Process.by_id(db_conn, row[1]),
29 day=Day.by_date(db_conn, row[3]))
30 assert todo.id_ is not None
31 db_conn.cached_todos[todo.id_] = todo
35 def by_id(cls, db_conn: DatabaseConnection, id_: int | None) -> Todo:
36 """Get Todo of .id_=id_ and children (from DB cache if possible)."""
37 if id_ in db_conn.cached_todos.keys():
38 todo = db_conn.cached_todos[id_]
41 for row in db_conn.exec('SELECT * FROM todos WHERE id = ?',
43 todo = cls.from_table_row(db_conn, row)
46 raise NotFoundException(f'Todo of ID not found: {id_}')
47 for row in db_conn.exec('SELECT child FROM todo_children '
48 'WHERE parent = ?', (id_,)):
49 todo.children += [cls.by_id(db_conn, row[0])]
50 for row in db_conn.exec('SELECT parent FROM todo_children '
51 'WHERE child = ?', (id_,)):
52 todo.parents += [cls.by_id(db_conn, row[0])]
53 assert isinstance(todo, Todo)
57 def by_date(cls, db_conn: DatabaseConnection, date: str) -> list[Todo]:
58 """Collect all Todos for Day of date."""
60 for row in db_conn.exec('SELECT id FROM todos WHERE day = ?', (date,)):
61 todos += [cls.by_id(db_conn, row[0])]
65 def is_doable(self) -> bool:
66 """Decide whether .is_done can be set to True based on children's."""
67 for child in self.children:
73 def is_done(self) -> bool:
74 """Wrapper around self._is_done so we can control its setter."""
78 def is_done(self, value: bool) -> None:
79 if value != self.is_done and not self.is_doable:
80 raise BadFormatException('cannot change doneness of undoable Todo')
83 def add_child(self, child: Todo) -> None:
84 """Add child to self.children, guard against recursion"""
85 def walk_steps(node: Todo) -> None:
86 if node.id_ == self.id_:
87 raise BadFormatException('bad child choice causes recursion')
88 for child in node.children:
91 raise HandledException('Can only add children to saved Todos.')
93 raise HandledException('Can only add saved children to Todos.')
94 if child in self.children:
95 raise BadFormatException('cannot adopt same child twice')
97 self.children += [child]
98 child.parents += [self]
100 def save(self, db_conn: DatabaseConnection) -> None:
101 """Write self and children to DB and its cache."""
102 if self.process.id_ is None:
103 raise NotFoundException('Process of Todo without ID (not saved?)')
104 cursor = db_conn.exec('REPLACE INTO todos VALUES (?,?,?,?)',
105 (self.id_, self.process.id_,
106 self.is_done, self.day.date))
107 self.id_ = cursor.lastrowid
108 assert self.id_ is not None
109 db_conn.cached_todos[self.id_] = self
110 db_conn.exec('DELETE FROM todo_children WHERE parent = ?',
112 for child in self.children:
113 db_conn.exec('INSERT INTO todo_children VALUES (?, ?)',
114 (self.id_, child.id_))