from urllib.parse import urlparse

from fastapi import Depends, HTTPException, Request

from app.appTypes import SiteConfig
from app.services.site_config_service import SiteConfigService


def _get_service() -> SiteConfigService:
    return SiteConfigService()


def get_current_site(
    request: Request,
    service: SiteConfigService = Depends(_get_service),
) -> SiteConfig:
    """Resolve the SiteConfig for the calling browser via the Origin (or
    Referer) header. Replaces the previous Bearer-hash auth pattern.
    """
    origin = request.headers.get("origin") or request.headers.get("referer")
    if not origin:
        raise HTTPException(status_code=400, detail="Missing Origin/Referer header")

    parsed = urlparse(origin)
    host = parsed.netloc or parsed.path or origin
    site = service.get_site_by_cb_host(host)
    if not site:
        raise HTTPException(status_code=400, detail=f"Unknown site origin: {host}")
    return site