Добавлены все базовые файлы для запуска проекта

config.py

@@ -0,0 +1,61 @@
+"""Server-side configuration for the n8n integration."""
+
+from __future__ import annotations
+
+import os
+from dataclasses import dataclass
+from pathlib import Path
+from urllib.parse import urlparse
+
+from dotenv import dotenv_values
+
+
+DEFAULT_MAX_FILE_BYTES = 10 * 1024 * 1024
+ENV_FILE = Path(__file__).resolve().parent / ".env"
+
+
+class ConfigurationError(ValueError):
+    """A required webhook setting is missing or invalid."""
+
+
+@dataclass(frozen=True)
+class Settings:
+    chat_webhook_url: str = ""
+    upload_webhook_url: str = ""
+    chat_timeout_seconds: float = 60.0
+    upload_timeout_seconds: float = 120.0
+    max_file_bytes: int = DEFAULT_MAX_FILE_BYTES
+
+    @classmethod
+    def from_env(cls) -> Settings:
+        # Resolve relative to the application, independently of the working directory.
+        values = {**dotenv_values(ENV_FILE, encoding="utf-8-sig"), **os.environ}
+
+        def setting(name: str, default: str) -> str:
+            value = values.get(name)
+            return default if value is None else value
+
+        try:
+            chat_timeout = float(setting("N8N_CHAT_TIMEOUT_SECONDS", "60"))
+            upload_timeout = float(setting("N8N_UPLOAD_TIMEOUT_SECONDS", "120"))
+            max_file_bytes = int(setting("N8N_MAX_FILE_BYTES", str(DEFAULT_MAX_FILE_BYTES)))
+        except ValueError as exc:
+            raise ConfigurationError("Некорректные числовые настройки n8n.") from exc
+
+        if chat_timeout <= 0 or upload_timeout <= 0 or max_file_bytes <= 0:
+            raise ConfigurationError("Таймауты и лимит файла должны быть положительными.")
+
+        return cls(
+            chat_webhook_url=setting("N8N_CHAT_WEBHOOK_URL", "").strip(),
+            upload_webhook_url=setting("N8N_UPLOAD_WEBHOOK_URL", "").strip(),
+            chat_timeout_seconds=chat_timeout,
+            upload_timeout_seconds=upload_timeout,
+            max_file_bytes=max_file_bytes,
+        )
+
+
+def require_webhook_url(value: str, label: str) -> str:
+    parsed = urlparse(value)
+    if parsed.scheme not in {"http", "https"} or not parsed.netloc:
+        raise ConfigurationError(f"Не задан корректный полный URL webhook для {label}.")
+    return value