X-Git-Url: https://plomlompom.com/repos/berlin_corona.txt?a=blobdiff_plain;f=plomtask%2Fdays.py;h=9f3aa697a831758d0635109446a35e73428b7181;hb=704c00a101fc1922158a3a71a043562d34b696ad;hp=8db9f15b7362ede61c70265e4d5eb8a4c2c0c626;hpb=4546631ed7cc59f3e66a1902b28930f955b2b03f;p=plomtask

diff --git a/plomtask/days.py b/plomtask/days.py
index 8db9f15..9f3aa69 100644
--- a/plomtask/days.py
+++ b/plomtask/days.py
@@ -1,24 +1,91 @@
-#!/usr/bin/env python3
 """Collecting Day and date-related items."""
-from datetime import datetime
+from __future__ import annotations
+from datetime import datetime, timedelta
+from plomtask.exceptions import BadFormatException
+from plomtask.db import DatabaseConnection, BaseModel
 
 DATE_FORMAT = '%Y-%m-%d'
 
 
-class Day:
+def valid_date(date_str: str) -> str:
+    """Validate date against DATE_FORMAT or 'today', return in DATE_FORMAT."""
+    if date_str == 'today':
+        date_str = todays_date()
+    try:
+        dt = datetime.strptime(date_str, DATE_FORMAT)
+    except (ValueError, TypeError) as e:
+        msg = f'Given date of wrong format: {date_str}'
+        raise BadFormatException(msg) from e
+    return dt.strftime(DATE_FORMAT)
+
+
+def todays_date() -> str:
+    """Return current date in DATE_FORMAT."""
+    return datetime.now().strftime(DATE_FORMAT)
+
+
+class Day(BaseModel[str]):
     """Individual days defined by their dates."""
+    table_name = 'days'
+    to_save = ['comment']
+
+    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
+
+    def __lt__(self, other: Day) -> bool:
+        return self.date < other.date
 
-    def __init__(self, date: str):
-        self.date = date
-        self.datetime = datetime.strptime(date, DATE_FORMAT)
+    @classmethod
+    def all(cls, db_conn: DatabaseConnection,
+            date_range: tuple[str, str] = ('', ''),
+            fill_gaps: bool = False) -> list[Day]:
+        """Return list of Days in database within date_range."""
+        min_date = '2024-01-01'
+        max_date = '2030-12-31'
+        start_date = valid_date(date_range[0] if date_range[0] else min_date)
+        end_date = valid_date(date_range[1] if date_range[1] else max_date)
+        days = []
+        sql = 'SELECT id FROM days WHERE id >= ? AND id <= ?'
+        for row in db_conn.exec(sql, (start_date, end_date)):
+            days += [cls.by_id(db_conn, row[0])]
+        days.sort()
+        if fill_gaps and 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 weekday(self):
+    def date(self) -> str:
+        """Return self.id_ under the assumption it's a date string."""
+        assert isinstance(self.id_, str)
+        return self.id_
+
+    @property
+    def weekday(self) -> str:
         """Return what weekday matches self.date."""
         return self.datetime.strftime('%A')
 
-    def __eq__(self, other: object):
-        return isinstance(other, self.__class__) and self.date == other.date
+    @property
+    def prev_date(self) -> str:
+        """Return date preceding date of this Day."""
+        prev_datetime = self.datetime - timedelta(days=1)
+        return prev_datetime.strftime(DATE_FORMAT)
+
+    @property
+    def next_date(self) -> str:
+        """Return date succeeding date of this Day."""
+        next_datetime = self.datetime + timedelta(days=1)
+        return next_datetime.strftime(DATE_FORMAT)
 
-    def __lt__(self, other):
-        return self.date < other.date
+    def save(self, db_conn: DatabaseConnection) -> None:
+        """Add (or re-write) self to DB and cache."""
+        self.save_core(db_conn)