Stage 03.1 - mock exchange integration

app/src/core/config.py

@@ -1,17 +1,11 @@
 from __future__ import annotations
-
 import os
 from dataclasses import dataclass
 from pathlib import Path
-
 from dotenv import load_dotenv
-
-
 BASE_DIR = Path(__file__).resolve().parents[2]
 ENV_FILE = BASE_DIR / ".env"
 load_dotenv(ENV_FILE)
-
-
 @dataclass(slots=True)
 class Settings:
     bot_token: str
@@ -19,17 +13,40 @@ class Settings:
     app_env: str
     log_level: str
     tz: str
-
-
+    exchange_enabled: bool
+    exchange_name: str
+    exchange_base_url: str
+    exchange_api_key: str
+    exchange_api_secret: str
+    exchange_timeout_sec: int
+    exchange_testnet: bool
+    default_symbol: str
+def _parse_bool(raw_value: str, default: bool = False) -> bool:
+    value = (raw_value or "").strip().lower()
+    if not value:
+        return default
+    return value in {"1", "true", "yes", "on"}
+def _parse_int(raw_value: str, default: int) -> int:
+    value = (raw_value or "").strip()
+    if not value:
+        return default
+    return int(value)
 def load_settings() -> Settings:
     bot_token = os.getenv("BOT_TOKEN", "").strip()
     if not bot_token:
         raise RuntimeError("BOT_TOKEN is not set in app/.env")
-
     return Settings(
         bot_token=bot_token,
         bot_parse_mode=os.getenv("BOT_PARSE_MODE", "HTML").strip() or "HTML",
         app_env=os.getenv("APP_ENV", "dev").strip() or "dev",
         log_level=os.getenv("LOG_LEVEL", "INFO").strip().upper() or "INFO",
         tz=os.getenv("TZ", "Europe/Madrid").strip() or "Europe/Madrid",
-    )
+        exchange_enabled=_parse_bool(os.getenv("EXCHANGE_ENABLED", "false")),
+        exchange_name=os.getenv("EXCHANGE_NAME", "dzengi").strip() or "dzengi",
+        exchange_base_url=os.getenv("EXCHANGE_BASE_URL", "").strip(),
+        exchange_api_key=os.getenv("EXCHANGE_API_KEY", "").strip(),
+        exchange_api_secret=os.getenv("EXCHANGE_API_SECRET", "").strip(),
+        exchange_timeout_sec=_parse_int(os.getenv("EXCHANGE_TIMEOUT_SEC", "10"), 10),
+        exchange_testnet=_parse_bool(os.getenv("EXCHANGE_TESTNET", "false")),
+        default_symbol=os.getenv("DEFAULT_SYMBOL", "BTCUSDT").strip() or "BTCUSDT",
+    )