From 6400ee985e04cf55d51910eeffc9edd7dc0501eb Mon Sep 17 00:00:00 2001
From: Vlad Stan <stan.v.vlad@gmail.com>
Date: Tue, 30 Jun 2026 14:52:07 +0300
Subject: [PATCH] refactor: move out `dispatch_wasm_invoice_paid ` from tasks

---
 lnbits/app.py                    |   1 +
 lnbits/core/extensions/events.py | 113 +++++++++++++++++++++++++++++++
 lnbits/core/extensions/wasm.py   |   1 -
 lnbits/core/tasks.py             |   2 -
 4 files changed, 114 insertions(+), 3 deletions(-)
 create mode 100644 lnbits/core/extensions/events.py

diff --git a/lnbits/app.py b/lnbits/app.py
index 2b2297b91..73e3d68ad 100644
--- a/lnbits/app.py
+++ b/lnbits/app.py
@@ -25,6 +25,7 @@ from lnbits.core.crud import (
 )
 from lnbits.core.crud.audit import delete_expired_audit_entries
 from lnbits.core.crud.extensions import create_installed_extension
+from lnbits.core.extensions.events import dispatch_wasm_invoice_paid
 from lnbits.core.extensions.loader import (
     is_wasm_extension_dir,
     is_wasm_extension_id,
diff --git a/lnbits/core/extensions/events.py b/lnbits/core/extensions/events.py
new file mode 100644
index 000000000..1dd103a7b
--- /dev/null
+++ b/lnbits/core/extensions/events.py
@@ -0,0 +1,113 @@
+import json
+from typing import Any
+
+from loguru import logger
+
+from lnbits.core.db import core_app_extra
+
+
+async def dispatch_wasm_invoice_paid(payment: Any) -> None:
+    extension_id = _payment_extension_id(payment)
+    if not extension_id:
+        return
+
+    extension = core_app_extra.wasm_extension_registry.get(extension_id)
+    if not extension:
+        return
+
+    export_name = _wasm_invoice_paid_export(extension.config)
+    if not export_name:
+        return
+
+    if not _is_wasm_event_export(extension, export_name):
+        logger.warning(
+            f"WASM extension '{extension.id}' declares invalid onInvoicePaid "
+            f"export '{export_name}'."
+        )
+        return
+
+    try:
+        from lnbits.core.extensions.wasm import invoke_wasm_extension_export
+
+        await invoke_wasm_extension_export(
+            extension.id,
+            export_name,
+            _wasm_invoice_paid_payload(payment),
+            context="event",
+            owner_id=await _wasm_invoice_paid_owner_id(extension, payment),
+        )
+    except Exception as exc:
+        logger.warning(
+            f"WASM extension '{extension.id}' failed to handle paid invoice "
+            f"'{payment.payment_hash}': {exc!s}"
+        )
+
+
+def _payment_extension_id(payment: Any) -> str | None:
+    if isinstance(payment.extension, str) and payment.extension:
+        return payment.extension
+
+    extra = payment.extra or {}
+    tag = extra.get("tag") or payment.tag
+    return tag if isinstance(tag, str) and tag else None
+
+
+async def _wasm_invoice_paid_owner_id(extension: Any, payment: Any) -> str | None:
+    source_id = _payment_source_id(payment)
+    source_table = _wasm_public_invoice_source_table(extension.config)
+    if not source_id or not source_table:
+        return None
+
+    from lnbits.core.extensions.storage import storage_get_row_owner_id
+
+    return await storage_get_row_owner_id(extension.id, source_table, source_id)
+
+
+def _payment_source_id(payment: Any) -> str | None:
+    extra = payment.extra or {}
+    source_id = extra.get("source_id")
+    return source_id if isinstance(source_id, str) and source_id else None
+
+
+def _wasm_public_invoice_source_table(config: dict[str, Any]) -> str | None:
+    permissions = config.get("permissions") or []
+    for permission in permissions:
+        if not isinstance(permission, dict):
+            continue
+        if permission.get("id") != "wallet.create_invoice_public":
+            continue
+        policy = permission.get("policy") or {}
+        table = policy.get("table")
+        return table if isinstance(table, str) and table else None
+    return None
+
+
+def _wasm_invoice_paid_export(config: dict[str, Any]) -> str | None:
+    events = config.get("events") or {}
+    export_name = events.get("onInvoicePaid")
+    return export_name if isinstance(export_name, str) and export_name else None
+
+
+def _is_wasm_event_export(extension: Any, export_name: str) -> bool:
+    for export in extension.exports:
+        if export.get("name") == export_name:
+            return export.get("visibility") == "event"
+    return False
+
+
+def _wasm_invoice_paid_payload(payment: Any) -> dict[str, Any]:
+    return {
+        "checkingId": payment.checking_id,
+        "paymentHash": payment.payment_hash,
+        "walletId": payment.wallet_id,
+        "amount": payment.amount,
+        "fee": payment.fee,
+        "bolt11": payment.bolt11,
+        "memo": payment.memo,
+        "pending": payment.pending,
+        "status": payment.status,
+        "tag": payment.tag,
+        "extension": payment.extension,
+        "extra": payment.extra or {},
+        "payment": json.loads(payment.json()),
+    }
diff --git a/lnbits/core/extensions/wasm.py b/lnbits/core/extensions/wasm.py
index 7a0b46bf7..6ec4f992a 100644
--- a/lnbits/core/extensions/wasm.py
+++ b/lnbits/core/extensions/wasm.py
@@ -33,7 +33,6 @@ async def invoke_wasm_extension_export(
         context=context,
         owner_id=owner_id,
     )
-    print("### api", api)
 
     return await asyncio.to_thread(
         _invoke_wasm_extension_export_sync,
diff --git a/lnbits/core/tasks.py b/lnbits/core/tasks.py
index 30bfd6444..f91d5ed0f 100644
--- a/lnbits/core/tasks.py
+++ b/lnbits/core/tasks.py
@@ -1,6 +1,4 @@
 import asyncio
-import json
-from typing import Any
 
 from loguru import logger