feat: on meta update, replace old meta

client_manager.py

@@ -4,7 +4,13 @@ from typing import Any, Callable, List
 from fastapi import WebSocket
 from loguru import logger
 
-from .crud import create_event, get_event, get_events, mark_events_deleted
+from .crud import (
+    create_event,
+    delete_events,
+    get_event,
+    get_events,
+    mark_events_deleted,
+)
 from .models import NostrEvent, NostrEventType, NostrFilter
 
 
@@ -36,7 +42,7 @@ class NostrClientConnection:
         await self.websocket.accept()
         while True:
             json_data = await self.websocket.receive_text()
-            print('### received: ', json_data)
+            print("### received: ", json_data)
             try:
                 data = json.loads(json_data)
 
@@ -54,7 +60,6 @@ class NostrClientConnection:
                 return True
         return False
 
-
     async def __handle_message(self, data: List) -> List:
         if len(data) < 2:
             return []
@@ -76,10 +81,12 @@ class NostrClientConnection:
         resp_nip20: List[Any] = ["OK", e.id]
         try:
             e.check_signature()
+            if e.is_meta_event():
+                await delete_events("111", NostrFilter(kinds=[0], authors=[e.pubkey]))
             await create_event("111", e)
             await self.broadcast_event(self, e)
             if e.is_delete_event():
-                await self.__delete_event(e)
+                await self.__handle_delete_event(e)
             resp_nip20 += [True, ""]
         except ValueError:
             resp_nip20 += [False, "invalid: wrong event `id` or `sig`"]
@@ -90,7 +97,7 @@ class NostrClientConnection:
 
         await self.websocket.send_text(json.dumps(resp_nip20))
 
-    async def __delete_event(self, event: NostrEvent):
+    async def __handle_delete_event(self, event: NostrEvent):
         # NIP 09
         filter = NostrFilter(authors=[event.pubkey])
         filter.ids = [t[1] for t in event.tags if t[0] == "e"]

crud.py

@@ -60,6 +60,14 @@ async def mark_events_deleted(relay_id: str,  filter: NostrFilter):
 
     await db.execute(f"""UPDATE nostrrelay.events SET deleted=true WHERE {" AND ".join(where)}""", tuple(values))
 
+async def delete_events(relay_id: str,  filter: NostrFilter):
+    if filter.is_empty():
+        return None
+    _, where, values = build_where_clause(relay_id, filter)
+
+    query = f"""DELETE from nostrrelay.events WHERE {" AND ".join(where)}"""
+    await db.execute(query, tuple(values))
+
 
 async def create_event_tags(
     relay_id: str, event_id: str, tag_name: str, tag_value: str, extra_values: Optional[str]
@@ -109,7 +117,7 @@ def build_select_events_query(relay_id:str, filter:NostrFilter):
         ORDER BY created_at DESC
         """
 
-    # todo: check range
+    # todo: check & enforce range
     if filter.limit and filter.limit > 0:
         query += f" LIMIT {filter.limit}"
 

models.py

@@ -59,6 +59,9 @@ class NostrEvent(BaseModel):
         id = hashlib.sha256(data.encode()).hexdigest()
         return id
 
+    def is_meta_event(self) -> bool:
+        return self.kind == 0
+    
     def is_delete_event(self) -> bool:
         return self.kind == 5
 

tests/fixture/clients.json

@@ -18,6 +18,24 @@
             true,
             ""
         ],
+        "meta_update": [
+            "EVENT",
+            {
+                "id": "2928f73760ac3a60affdf51d04169680472a8594b4584f087f497dcf6a28d12a",
+                "pubkey": "0b29ecc73ba400e5b4bd1e4cb0d8f524e9958345749197ca21c8da38d0622816",
+                "created_at": 1675673494,
+                "kind": 0,
+                "tags": [],
+                "content": "{\"name\":\"Alice\",\"about\":\"Uses Hamstr\"}",
+                "sig": "938313418d6d8b16b43213b3347c64925cbc1846e4447b4d878be9b865fe4b78f276ac399ea6b0aa81ed88fb18c992f2fae9e4f70c35c49202e576c54a0dc89c"
+            }
+        ],
+        "meta_update_response": [
+            "OK",
+            "2928f73760ac3a60affdf51d04169680472a8594b4584f087f497dcf6a28d12a",
+            true,
+            ""
+        ],
         "post01": [
             "EVENT",
             {

tests/test_clients.py

@@ -1,7 +1,8 @@
 import asyncio
-from json import dumps, loads
-
 import pytest
+
+from json import dumps, loads
+from copy import deepcopy
 from fastapi import WebSocket
 
 from lnbits.extensions.nostrrelay.client_manager import (
@@ -80,10 +81,11 @@ async def alice_wires_meta_and_post01(ws_alice: MockWebSocket):
     await ws_alice.wire_mock_data(alice["meta"])
     await ws_alice.wire_mock_data(alice["post01"])
     await ws_alice.wire_mock_data(alice["post01"])
+    await ws_alice.wire_mock_data(alice["meta_update"])
     await asyncio.sleep(0.5)
 
     assert (
-        len(ws_alice.sent_messages) == 3
+        len(ws_alice.sent_messages) == 4
     ), "Alice: Expected 3 confirmations to be sent"
     assert ws_alice.sent_messages[0] == dumps(
         alice["meta_response"]
@@ -94,6 +96,9 @@ async def alice_wires_meta_and_post01(ws_alice: MockWebSocket):
     assert ws_alice.sent_messages[2] == dumps(
         alice["post01_response_duplicate"]
     ), "Alice: Expected failure for double posting"
+    assert ws_alice.sent_messages[3] == dumps(
+        alice["meta_update_response"]
+    ), "Alice: Expected confirmation for meta update"
 
     await asyncio.sleep(0.1)
 
@@ -112,8 +117,8 @@ async def bob_wires_meta_and_folows_alice(ws_bob: MockWebSocket):
         bob["meta_response"]
     ), "Bob: Wrong confirmation for meta"
     assert ws_bob.sent_messages[1] == dumps(
-        ["EVENT", "profile", alice["meta"][1]]
-    ), "Bob: Wrong response for Alice's meta"
+        ["EVENT", "profile", alice["meta_update"][1]]
+    ), "Bob: Wrong response for Alice's meta (updated version)"
     assert ws_bob.sent_messages[2] == dumps(
         ["EOSE", "profile"]
     ), "Bob: Wrong End Of Streaming Event for profile"
@@ -266,7 +271,10 @@ async def alice_writes_to_bob(ws_alice: MockWebSocket, ws_bob: MockWebSocket):
         ["EOSE", "notifications:d685447c43c7c18dbbea61923cf0b63e1ab46bed"]
     ), "Bob: Received all stored events"
 
-async def alice_deletes_post01__bob_is_notified(ws_alice: MockWebSocket, ws_bob:MockWebSocket):
+
+async def alice_deletes_post01__bob_is_notified(
+    ws_alice: MockWebSocket, ws_bob: MockWebSocket
+):
     ws_bob.sent_messages.clear()
     await ws_bob.wire_mock_data(bob["request_posts_alice"])
     await asyncio.sleep(0.1)
@@ -305,6 +313,3 @@ async def alice_deletes_post01__bob_is_notified(ws_alice: MockWebSocket, ws_bob:
     assert (
         len(ws_bob.sent_messages) == 2
     ), "Bob: Expected one posts from Alice plus and EOSE"
-
-
-