[FEAT] Push notification integration into core (#1393)

* push notification integration into core

added missing component

fixed bell working on all pages
- made pubkey global template env var
- had to move `get_push_notification_pubkey` to `helpers.py` because of circular reference with `tasks.py`

formay

trying to fix mypy

added py-vapid to requirements

Trying to fix stub mypy issue

* removed key files

* webpush key pair is saved in db `webpush_settings`

* removed lnaddress extension changes

* support for multi user account subscriptions, subscriptions are stored user based

fixed syntax error

fixed syntax error

removed unused line

* fixed subscribed user storage with local storage, no get request required

* method is singular now

* cleanup unsubscribed or expired push subscriptions

fixed flake8 errors

fixed poetry errors

* updating to latest lnbits

formatting, rebase error

fix

* remove unused?

* revert

* relock

* remove

* do not create settings table use adminsettings

mypy

fix

* cleanup old code

* catch case when client tries to recreate existing webpush subscription e.g. on cleared local storage

* show notification bell on user related pages only

* use local storage with one key like array, some refactoring

* fixed crud import

* fixed too long line

* removed unused imports

* ruff

* make webpush editable

* fixed privkey encoding

* fix ruff

* fix migration

---------

Co-authored-by: schneimi <admin@schneimi.de>
Co-authored-by: schneimi <dev@schneimi.de>
Co-authored-by: dni ⚡ <office@dnilabs.com>

lnbits/core/crud.py

@@ -10,10 +10,23 @@ from lnbits import bolt11
 from lnbits.core.models import WalletType
 from lnbits.db import Connection, Database, Filters, Page
 from lnbits.extension_manager import InstallableExtension
-from lnbits.settings import AdminSettings, EditableSettings, SuperSettings, settings
+from lnbits.settings import (
+    AdminSettings,
+    SuperSettings,
+    WebPushSettings,
+    settings,
+)
 
 from . import db
-from .models import BalanceCheck, Payment, PaymentFilters, TinyURL, User, Wallet
+from .models import (
+    BalanceCheck,
+    Payment,
+    PaymentFilters,
+    TinyURL,
+    User,
+    Wallet,
+    WebPushSubscription,
+)
 
 # accounts
 # --------
@@ -788,8 +801,16 @@ async def delete_admin_settings():
     await db.execute("DELETE FROM settings")
 
 
-async def update_admin_settings(data: EditableSettings):
-    await db.execute("UPDATE settings SET editable_settings = ?", (json.dumps(data),))
+async def update_admin_settings(data: dict):
+    row = await db.fetchone("SELECT editable_settings FROM settings")
+    if not row:
+        return None
+    editable_settings = json.loads(row["editable_settings"])
+    for key, value in data.items():
+        editable_settings[key] = value
+    await db.execute(
+        "UPDATE settings SET editable_settings = ?", (json.dumps(editable_settings),)
+    )
 
 
 async def update_super_user(super_user: str) -> SuperSettings:
@@ -872,3 +893,82 @@ async def delete_tinyurl(tinyurl_id: str):
         "DELETE FROM tiny_url WHERE id = ?",
         (tinyurl_id,),
     )
+
+
+# push_notification
+# -----------------
+
+
+async def get_webpush_settings() -> Optional[WebPushSettings]:
+    row = await db.fetchone("SELECT * FROM webpush_settings")
+    if not row:
+        return None
+    vapid_keypair = json.loads(row["vapid_keypair"])
+    return WebPushSettings(**vapid_keypair)
+
+
+async def create_webpush_settings(webpush_settings: dict):
+    await db.execute(
+        "INSERT INTO webpush_settings (vapid_keypair) VALUES (?)",
+        (json.dumps(webpush_settings),),
+    )
+    return await get_webpush_settings()
+
+
+async def get_webpush_subscription(
+    endpoint: str, user: str
+) -> Optional[WebPushSubscription]:
+    row = await db.fetchone(
+        "SELECT * FROM webpush_subscriptions WHERE endpoint = ? AND user = ?",
+        (
+            endpoint,
+            user,
+        ),
+    )
+    return WebPushSubscription(**dict(row)) if row else None
+
+
+async def get_webpush_subscriptions_for_user(
+    user: str,
+) -> List[WebPushSubscription]:
+    rows = await db.fetchall(
+        "SELECT * FROM webpush_subscriptions WHERE user = ?",
+        (user,),
+    )
+    return [WebPushSubscription(**dict(row)) for row in rows]
+
+
+async def create_webpush_subscription(
+    endpoint: str, user: str, data: str, host: str
+) -> WebPushSubscription:
+    await db.execute(
+        """
+        INSERT INTO webpush_subscriptions (endpoint, user, data, host)
+        VALUES (?, ?, ?, ?)
+        """,
+        (
+            endpoint,
+            user,
+            data,
+            host,
+        ),
+    )
+    subscription = await get_webpush_subscription(endpoint, user)
+    assert subscription, "Newly created webpush subscription couldn't be retrieved"
+    return subscription
+
+
+async def delete_webpush_subscription(endpoint: str, user: str) -> None:
+    await db.execute(
+        "DELETE FROM webpush_subscriptions WHERE endpoint = ? AND user = ?",
+        (
+            endpoint,
+            user,
+        ),
+    )
+
+
+async def delete_webpush_subscriptions(endpoint: str) -> None:
+    await db.execute(
+        "DELETE FROM webpush_subscriptions WHERE endpoint = ?", (endpoint,)
+    )