init commit

app/config.py

@@ -0,0 +1,23 @@
+import os
+from dataclasses import dataclass
+
+@dataclass
+class Config:
+    bot_token: str
+    database_url: str
+    log_level: str = os.getenv("LOG_LEVEL", "INFO")
+
+def load_config() -> "Config":
+    bot_token = os.getenv("BOT_TOKEN", "").strip()
+    if not bot_token:
+        raise RuntimeError("BOT_TOKEN is not set")
+    # DATABASE_URL takes precedence; else compose from parts
+    db_url = os.getenv("DATABASE_URL", "").strip()
+    if not db_url:
+        host = os.getenv("DB_HOST", "db")
+        port = os.getenv("DB_PORT", "5432")
+        name = os.getenv("DB_NAME", "tg_poster")
+        user = os.getenv("DB_USER", "postgres")
+        pwd  = os.getenv("DB_PASSWORD", "postgres")
+        db_url = f"postgresql+psycopg://{user}:{pwd}@{host}:{port}/{name}"
+    return Config(bot_token=bot_token, database_url=db_url)