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   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
   6
   7 DATE_FORMAT = '%Y-%m-%d'
   8
   9
  10 def date_valid(date: str):
  11     """Validate date against DATE_FORMAT, return Datetime or None."""
  12     try:
  13         result = datetime.strptime(date, DATE_FORMAT)
  14     except (ValueError, TypeError):
  15         return None
  16     return result
  17
  18
  19 class Day:
  20     """Individual days defined by their dates."""
  21
  22     def __init__(self, date: str):
  23         self.date = date
  24         self.datetime = date_valid(self.date)
  25         if not self.datetime:
  26             raise HandledException(f'Given date of wrong format: {self.date}')
  27
  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,))
  31
  32     @classmethod
  33     def from_table_row(cls, row: Row):
  34         """Make new Day from database row."""
  35         return cls(row[0])
  36
  37     @classmethod
  38     def all(cls, db_conn: DatabaseConnection,
  39             date_range: tuple[str, str] = ('', '')):
  40         """Return list of Days in database within date_range."""
  41         start_date = date_range[0] if date_range[0] else '2024-01-01'
  42         end_date = date_range[1] if date_range[1] else '2030-12-31'
  43         days = []
  44         sql = 'SELECT * FROM days WHERE date >= ? AND date <= ?'
  45         for row in db_conn.exec(sql, (start_date, end_date)):
  46             days += [cls.from_table_row(row)]
  47         days.sort()
  48         return days
  49
  50     @property
  51     def weekday(self):
  52         """Return what weekday matches self.date."""
  53         return self.datetime.strftime('%A')
  54
  55     def __eq__(self, other: object):
  56         return isinstance(other, self.__class__) and self.date == other.date
  57
  58     def __lt__(self, other):
  59         return self.date < other.date