add daily todo printer

daily-todo.py

@@ -0,0 +1,168 @@
+import logging
+import os
+import sys
+from datetime import date, datetime, timedelta
+from random import randint
+
+from caldav import DAVClient
+from dotenv import find_dotenv, load_dotenv
+
+from printer import p
+
+logging.basicConfig(
+    format="{asctime} {levelname:8} {name}: {message}",
+    datefmt="%Y-%m-%d %H:%M:%S",
+    style="{",
+    stream=sys.stdout,
+    force=True,
+)
+
+log = logging.getLogger("todo-receipt")
+log.setLevel(logging.DEBUG)
+
+if load_dotenv(find_dotenv(usecwd=True)):
+    log.debug("Loaded .env")
+else:
+    log.debug("Didn't find .env")
+
+CALDAV_URL = os.getenv("CALDAV_URL")
+CALDAV_USERNAME = os.getenv("CALDAV_USERNAME")
+CALDAV_PASSWORD = os.getenv("CALDAV_PASSWORD")
+
+day = timedelta(days=1)
+week = timedelta(days=7)
+today = date.today()
+yesterday = today - day
+tomorrow = today + day
+next_week = today + week
+
+
+def coerce_date(datetime):
+    try:
+        return datetime.date()
+    except:
+        return datetime
+
+
+def shuffle_with_priority(tasks):
+    return sorted(
+        tasks,
+        key=lambda task: (
+            task.icalendar_component.get("priority", 5),
+            randint(0, 10),
+        ),
+    )
+
+
+with DAVClient(
+    url=CALDAV_URL, username=CALDAV_USERNAME, password=CALDAV_PASSWORD
+) as client:
+    log.debug("Loading calendars")
+    principal = client.principal()
+    calendars = principal.calendars()
+
+    events = []
+    todos = []
+
+    for c in calendars:
+        log.debug(f"Fetching from {c.name}")
+        if c.name not in ["Schedule"]:
+            log.debug("Fetching events and todos")
+            events.extend(c.events())
+            todos.extend(c.todos())
+        else:
+            log.debug("Finding cancelled classes")
+            for event in c.events():
+                if event.icalendar_component.get("status") == "CANCELED":
+                    log.debug(
+                        f"Found cancelled class {event.icalendar_component.get('summary')}"
+                    )
+                    events.append(event)
+
+    must_do = []
+    should_do = []
+    want_to_do = []
+
+    log.debug("Processing todos")
+    for task in todos:
+        due = task.get_due()
+        if due is None:
+            want_to_do.append(task)
+            continue
+
+        task.expand_rrule(yesterday, next_week)
+        due = coerce_date(due)
+
+        start = coerce_date(task.icalendar_component.get("dtstart").dt or yesterday)
+
+        if today < start:
+            continue
+
+        if due < tomorrow:
+            must_do.append(task)
+        elif due < next_week:
+            should_do.append(task)
+        else:
+            want_to_do.append(task)
+
+    scheduled = []
+
+    log.debug("Processing events")
+    for event in events:
+        event.expand_rrule(yesterday, next_week)
+        start_day = coerce_date(event.icalendar_component.get("dtstart").dt)
+        end_day = coerce_date(event.icalendar_component.get("dtend").dt)
+
+        if end_day < today or today < start_day:
+            continue
+        else:
+            scheduled.append(event)
+
+    should_do = shuffle_with_priority(should_do)
+    want_to_do = shuffle_with_priority(want_to_do)
+
+    while len(must_do) < 2:
+        if should_do:
+            must_do.append(should_do.pop(0))
+        elif want_to_do:
+            must_do.append(want_to_do.pop(0))
+        else:
+            break  # No remaining tasks
+
+    while len(should_do) < 3:
+        if want_to_do:
+            should_do.append(want_to_do.pop(0))
+        else:
+            break  # No remaining tasks
+
+    categories = {
+        "Must do": must_do,
+        "Should do": should_do[:3],
+        "Want to do": want_to_do[:3],
+    }
+
+with p:
+    log.debug("Printing output")
+    p.title(" TODO List ", size=4)
+    p.subtitle(datetime.today().strftime("%Y-%m-%d"))
+    p.ln()
+
+    if scheduled:
+        p.textln("Scheduled:")
+        for event in scheduled:
+            summary = event.icalendar_component["summary"]
+            if event.icalendar_component.get("status") == "CANCELED":
+                summary += " (CANCELED)"
+            start = event.icalendar_component.get("dtstart").dt
+            p.textln(f"[ ] {summary} @ {start.strftime('%H:%M')}")
+    else:
+        p.textln("Scheduled: (None)")
+
+    for k, v in categories.items():
+        p.ln()
+        if v:
+            p.textln(f"{k}:")
+            for task in v:
+                p.textln(f"[ ] {task.icalendar_component['summary']}")
+        else:
+            p.textln(f"{k}: (None)")

shell.nix

@@ -23,9 +23,13 @@ in
 # alias print="lp -d EPSON-TM-m30 -o lpi=10 -o cpi=15"
 devshell.mkShell {
   packages = with pkgs; [
-    (python3.withPackages (p: with p; [
+    (python3.withPackages (
+      p: with p; [
         python-escpos
         pycups
-    ]))
+        caldav
+        python-dotenv
+      ]
+    ))
   ];
 }