feat: ai letter + disabled fl

app/state.py

@@ -3,6 +3,8 @@ from __future__ import annotations
 import json
 from pathlib import Path
 
+from app.models import Offer
+
 
 class SentOffersStore:
     def __init__(self, file_path: Path) -> None:
@@ -29,3 +31,44 @@ class SentOffersStore:
     def _persist(self) -> None:
         with self._file_path.open("w", encoding="utf-8") as file:
             json.dump(sorted(self._sent_keys), file, ensure_ascii=False, indent=2)
+
+
+class PublishedOffersStore:
+    def __init__(self, file_path: Path) -> None:
+        self._file_path = file_path
+        self._file_path.parent.mkdir(parents=True, exist_ok=True)
+        self._offers_by_message_key = self._load()
+
+    def add(self, chat_id: int, message_id: int, offer: Offer) -> None:
+        self._offers_by_message_key[self._message_key(chat_id, message_id)] = offer.to_dict()
+        self._persist()
+
+    def get(self, chat_id: int, message_id: int) -> Offer | None:
+        data = self._offers_by_message_key.get(self._message_key(chat_id, message_id))
+        if data is None:
+            return None
+        return Offer.from_dict(data)
+
+    def remove(self, chat_id: int, message_id: int) -> None:
+        removed = self._offers_by_message_key.pop(self._message_key(chat_id, message_id), None)
+        if removed is not None:
+            self._persist()
+
+    def _load(self) -> dict[str, dict[str, str | int | None]]:
+        if not self._file_path.exists():
+            return {}
+
+        with self._file_path.open("r", encoding="utf-8") as file:
+            data = json.load(file)
+
+        if not isinstance(data, dict):
+            return {}
+        return data
+
+    def _persist(self) -> None:
+        with self._file_path.open("w", encoding="utf-8") as file:
+            json.dump(self._offers_by_message_key, file, ensure_ascii=False, indent=2)
+
+    @staticmethod
+    def _message_key(chat_id: int, message_id: int) -> str:
+        return f"{chat_id}:{message_id}"