feat: add personal ics feeds for assigned tasks

app/routes/main.py

@@ -3,9 +3,11 @@ from __future__ import annotations
 from functools import lru_cache
 from pathlib import Path
 
-from flask import Blueprint, current_app, redirect, send_from_directory, url_for
+from flask import Blueprint, Response, current_app, redirect, send_from_directory, url_for
 from flask_login import current_user
 
+from ..models import User
+from ..services.calendar_feeds import build_calendar_feed
 
 bp = Blueprint("main", __name__)
 
@@ -39,6 +41,16 @@ def uploads(filename: str):
     return send_from_directory(current_app.config["UPLOAD_FOLDER"], filename)
 
 
+@bp.route("/calendar-feed/<token>.ics")
+def calendar_feed(token: str):
+    user = User.query.filter_by(calendar_feed_token=token).first_or_404()
+    body = build_calendar_feed(user, url_for("tasks.my_tasks", _external=True))
+    response = Response(body, content_type="text/calendar; charset=utf-8")
+    response.headers["Content-Disposition"] = 'inline; filename="putzliga.ics"'
+    response.headers["Cache-Control"] = "private, max-age=300"
+    return response
+
+
 @lru_cache(maxsize=64)
 def load_icon_svg(name: str, static_folder: str) -> str:
     path = Path(static_folder) / "icons" / f"{name}.svg"

app/routes/settings.py

@@ -45,6 +45,7 @@ def _save_avatar(file_storage) -> str:
 @bp.route("", methods=["GET", "POST"])
 @login_required
 def index():
+    current_user.ensure_calendar_feed_token()
     form = SettingsProfileForm(original_email=current_user.email, obj=current_user)
     admin_form = AdminUserForm(prefix="admin")
     quick_task_config_form = QuickTaskConfigForm(prefix="quickconfig")
@@ -80,6 +81,7 @@ def index():
         quick_task_config=quick_task_config,
         users=User.query.order_by(User.is_admin.desc(), User.name.asc()).all(),
         earned_badges=earned_badges_for_user(current_user.id),
+        calendar_feed_url=url_for("main.calendar_feed", token=current_user.calendar_feed_token, _external=True),
         push_ready=push_enabled(),
         has_subscription=bool(subscriptions),
         settings_tabs=_settings_tabs(),
@@ -87,6 +89,16 @@ def index():
     )
 
 
+@bp.route("/calendar-feed/regenerate", methods=["POST"])
+@login_required
+def regenerate_calendar_feed():
+    current_user.calendar_feed_token = None
+    current_user.ensure_calendar_feed_token()
+    db.session.commit()
+    flash("Dein persönlicher Kalender-Link wurde neu erzeugt.", "success")
+    return redirect(url_for("settings.index"))
+
+
 @bp.route("/badges")
 @login_required
 def badges():