1 """Collecting Day and date-related items."""
2 from datetime import datetime
3 from sqlite3 import Row
4 from plomtask.misc import HandledException
5 from plomtask.db import DatabaseConnection
7 DATE_FORMAT = '%Y-%m-%d'
10 def date_valid(date: str):
11 """Validate date against DATE_FORMAT, return Datetime or None."""
13 result = datetime.strptime(date, DATE_FORMAT)
14 except (ValueError, TypeError):
20 """Individual days defined by their dates."""
22 def __init__(self, date: str):
24 self.datetime = date_valid(self.date)
26 raise HandledException(f'Given date of wrong format: {self.date}')
28 def save(self, db_conn: DatabaseConnection):
29 """Add (or re-write) self to database."""
30 db_conn.exec('REPLACE INTO days VALUES (?)', (self.date,))
33 def from_table_row(cls, row: Row):
34 """Make new Day from database row."""
38 def all(cls, db_conn: DatabaseConnection):
39 """Return list of all Days in database."""
41 for row in db_conn.exec('SELECT * FROM days'):
42 days += [cls.from_table_row(row)]
47 """Return what weekday matches self.date."""
48 return self.datetime.strftime('%A')
50 def __eq__(self, other: object):
51 return isinstance(other, self.__class__) and self.date == other.date
53 def __lt__(self, other):
54 return self.date < other.date