feat(link_codes): linking method between telegram and website

config.py

@@ -7,19 +7,15 @@ from pydantic_settings import BaseSettings, SettingsConfigDict
 class Settings(BaseSettings):
     model_config = SettingsConfigDict(env_file=".env")
 
+    ### Internal settings ###
     postgres_user: str = Field()
     postgres_password: str = Field()
     postgres_host: str = Field()
     postgres_port: str = Field()
     postgres_db: str = Field()
 
-    private_key_fp: str = Field()
-    public_key_fp: str = Field()
-
-    access_token_ttl: int = Field(description="Access token TTL (minutes)")
-
-    pally_shop_id: str = Field()
-    pally_token: str = Field()
+    ### Telegram ###
+    bot_username: str = Field()
 
     ### Remnawave ###
     remnawave_base_url: str = Field()
@@ -27,12 +23,23 @@ class Settings(BaseSettings):
     remnawave_token: str = Field()
     remnawave_default_squads_raw: str = Field(alias="REMNAWAVE_DEFAULT_SQUADS_UUIDS")
 
-    ###
+    ### Finance ###
     minimal_deposit: int = Field()
     referal_bonus: int = Field(30)
 
+    #### Pally ####
+    pally_shop_id: str = Field()
+    pally_token: str = Field()
+
     ### Security related ###
+    private_key_fp: str = Field()
+    public_key_fp: str = Field()
+
+    access_token_ttl: int = Field(description="Access token TTL (minutes)")
+    link_code_ttl: int = Field(8, description="Link Code TTL (minutes)")
+
     min_password_length: int = Field(8)
+    link_code_length: int = Field(8)
     password_security_threshold: int = Field(2)
 
     @computed_field
@@ -61,5 +68,10 @@ class Settings(BaseSettings):
         with open(self.public_key_fp, "rb") as f:
             return f.read()
 
+    @computed_field
+    @property
+    def bot_url(self) -> str:
+        return "https://t.me/" + self.bot_username.lstrip("@")
+
 
 cfg = Settings()  # type: ignore