X-Git-Url: https://plomlompom.com/repos/berlin_corona.txt?a=blobdiff_plain;f=plomtask%2Fdays.py;h=afdea33760b41df3149c857b306c6e2b447b7df8;hb=8aa3103f8e131b8925ac9daafadf2db77886c910;hp=4e0c4747809bc1e352e492cf619fafb41f3f0bbb;hpb=96b8f35df2ed6f7db0c7c8ffa8234e2925e8756c;p=plomtask

diff --git a/plomtask/days.py b/plomtask/days.py
index 4e0c474..afdea33 100644
--- a/plomtask/days.py
+++ b/plomtask/days.py
@@ -1,35 +1,102 @@
 """Collecting Day and date-related items."""
-from datetime import datetime
-from plomtask.misc import HandledException
+from __future__ import annotations
+from datetime import datetime, timedelta
+from sqlite3 import Row
+from plomtask.exceptions import BadFormatException, NotFoundException
+from plomtask.db import DatabaseConnection
 
 DATE_FORMAT = '%Y-%m-%d'
 
 
-def date_valid(date: str):
-    """Validate date against DATE_FORMAT, return Datetime or None."""
+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:
-        result = datetime.strptime(date, DATE_FORMAT)
-    except (ValueError, TypeError):
-        return None
-    return result
+        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:
     """Individual days defined by their dates."""
 
-    def __init__(self, date: str):
-        self.date = date
-        self.datetime = date_valid(self.date)
-        if not self.datetime:
-            raise HandledException(f'Given date of wrong format: {self.date}')
+    def __init__(self, date: str, comment: str = '') -> None:
+        self.date = valid_date(date)
+        self.datetime = datetime.strptime(self.date, DATE_FORMAT)
+        self.comment = comment
+
+    def __eq__(self, other: object) -> bool:
+        return isinstance(other, self.__class__) and self.date == other.date
+
+    def __lt__(self, other: Day) -> bool:
+        return self.date < other.date
+
+    @classmethod
+    def from_table_row(cls, row: Row) -> Day:
+        """Make Day from database row."""
+        return cls(row[0], row[1])
+
+    @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 * FROM days WHERE date >= ? AND date <= ?'
+        for row in db_conn.exec(sql, (start_date, end_date)):
+            days += [cls.from_table_row(row)]
+        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
+
+    @classmethod
+    def by_date(cls, db_conn: DatabaseConnection,
+                date: str, create: bool = False) -> Day:
+        """Retrieve Day by date if in DB, else return None."""
+        for row in db_conn.exec('SELECT * FROM days WHERE date = ?', (date,)):
+            return cls.from_table_row(row)
+        if not create:
+            raise NotFoundException(f'Day not found for date: {date}')
+        return cls(date)
 
     @property
-    def weekday(self):
+    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)
 
-    def __lt__(self, other):
-        return self.date < other.date
+    @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 save(self, db_conn: DatabaseConnection) -> None:
+        """Add (or re-write) self to database."""
+        db_conn.exec('REPLACE INTO days VALUES (?, ?)',
+                     (self.date, self.comment))