+ table_name = 'days'
+ to_save = ['comment']
+ add_to_dict = ['todos']
+ can_create_by_id = True
+
+ def __init__(self, date: str, comment: str = '') -> None:
+ id_ = valid_date(date)
+ super().__init__(id_)
+ self.datetime = datetime.strptime(self.date, DATE_FORMAT)
+ self.comment = comment
+ self.todos: list[Todo] = []
+
+ def __lt__(self, other: Day) -> bool:
+ return self.date < other.date
+
+ @classmethod
+ def from_table_row(cls, db_conn: DatabaseConnection, row: Row | list[Any]
+ ) -> Day:
+ """Make from DB row, with linked Todos."""
+ day = super().from_table_row(db_conn, row)
+ assert isinstance(day.id_, str)
+ day.todos = Todo.by_date(db_conn, day.id_)
+ return day
+
+ @classmethod
+ def by_id(cls, db_conn: DatabaseConnection, id_: str) -> Day:
+ """Extend BaseModel.by_id checking for new/lost .todos."""
+ day = super().by_id(db_conn, id_)
+ if day.id_ in Todo.days_to_update:
+ Todo.days_to_update.remove(day.id_)
+ day.todos = Todo.by_date(db_conn, day.id_)
+ return day
+
+ @classmethod
+ def by_date_range_filled(cls, db_conn: DatabaseConnection,
+ start: str, end: str) -> list[Day]:
+ """Return days existing and non-existing between dates start/end."""
+ ret = cls.by_date_range_with_limits(db_conn, (start, end), 'id')
+ days, start_date, end_date = ret
+ return cls.with_filled_gaps(days, start_date, end_date)
+
+ @classmethod
+ def with_filled_gaps(cls, days: list[Day], start_date: str, end_date: str
+ ) -> list[Day]:
+ """In days, fill with (un-saved) Days gaps between start/end_date."""
+ if start_date > end_date:
+ return days
+ days.sort()
+ if start_date not in [d.date for d in days]:
+ days[:] = [Day(start_date)] + days
+ if end_date not in [d.date for d in days]:
+ days += [Day(end_date)]
+ if len(days) > 1:
+ gapless_days = []
+ for i, day in enumerate(days):
+ gapless_days += [day]
+ if i < len(days) - 1:
+ while day.next_date != days[i+1].date:
+ day = Day(day.next_date)
+ gapless_days += [day]
+ days[:] = gapless_days
+ return days
+
+ @property
+ def date(self) -> str:
+ """Return self.id_ under the assumption it's a date string."""
+ assert isinstance(self.id_, str)
+ return self.id_