feat: 1-to-1 message render + web data-lake backend

backend/src/utils/read/peers.py

@@ -2,13 +2,19 @@ import asyncpg
 
 from utils.read.models import Page, PeerHistoryView, PeerView, StoryView
 
+_PEER_COLS = (
+    "peer_id, first_name, last_name, username, phone, photo_unique_id, "
+    "is_deleted_account, updated_at, "
+    "EXISTS (SELECT 1 FROM avatars a WHERE a.account_id = peers.account_id "
+    "AND a.owner_id = peers.peer_id) AS has_avatar"
+)
+
 
 async def get_peer(
     pool: asyncpg.Pool, account_id: int, peer_id: int
 ) -> PeerView | None:
     row = await pool.fetchrow(
-        "SELECT peer_id, first_name, last_name, username, phone, "
-        "photo_unique_id, is_deleted_account, updated_at FROM peers "
+        f"SELECT {_PEER_COLS} FROM peers "  # noqa: S608
         "WHERE account_id = $1 AND peer_id = $2",
         account_id,
         peer_id,
@@ -16,6 +22,20 @@ async def get_peer(
     return PeerView(**dict(row)) if row else None
 
 
+async def get_peers(
+    pool: asyncpg.Pool, account_id: int, ids: list[int]
+) -> list[PeerView]:
+    if not ids:
+        return []
+    rows = await pool.fetch(
+        f"SELECT {_PEER_COLS} FROM peers "  # noqa: S608
+        "WHERE account_id = $1 AND peer_id = ANY($2)",
+        account_id,
+        ids,
+    )
+    return [PeerView(**dict(row)) for row in rows]
+
+
 async def get_peer_history(
     pool: asyncpg.Pool, account_id: int, peer_id: int
 ) -> list[PeerHistoryView]: