"""Security middleware for VoIdeaAI.

Adds security headers to all HTTP responses.
"""

from starlette.middleware.base import BaseHTTPMiddleware
from starlette.requests import Request
from starlette.responses import Response


class SecurityHeadersMiddleware(BaseHTTPMiddleware):
    async def dispatch(self, request: Request, call_next):
        response: Response = await call_next(request)
        response.headers["X-Content-Type-Options"] = "nosniff"
        response.headers["X-Frame-Options"] = "DENY"
        response.headers["X-XSS-Protection"] = "1; mode=block"
        response.headers["Strict-Transport-Security"] = (
            "max-age=31536000; includeSubDomains"
        )
        response.headers["Content-Security-Policy"] = (
            "default-src 'self'; "
            "script-src 'self'; "
            "style-src 'self' 'unsafe-inline'; "
            "connect-src 'self' https://*.openai.com https://llm.api.cloud.yandex.net https://cloud-api.yandex.net; "
            "media-src 'self' blob:; "
            "img-src 'self' data: https://avatars.yandex.net"
        )
        return response