"""Legacy beta signup endpoint — redirects to /register?from=beta.

Phase 2 (self-serve signup) makes the public register flow the canonical
front door. The old `/api/v1/beta-signup` POST endpoint is kept mounted to
preserve any external links that still hit it, but now responds with a
307 Temporary Redirect to `/register?from=beta` so the user lands in the
real signup flow. The `?from=beta` marker lets the frontend tag the
signup origin for analytics.

Note: there is no `beta_signup` database table — the original endpoint
only fired a notification email. There is therefore no waitlist to email
and no migration to run when retiring the endpoint.
"""

import logging

from fastapi import APIRouter
from fastapi.responses import RedirectResponse

from app.core.config import settings

logger = logging.getLogger(__name__)

router = APIRouter(prefix="/beta-signup", tags=["beta"])

# Local-dev fallback when FRONTEND_URL isn't configured. The redirect must
# be absolute — a relative URL would resolve against the API origin
# (api.resolutionflow.com), which has no /register page.
_DEFAULT_FRONTEND_URL = "http://localhost:5173"


@router.post("", include_in_schema=False)
async def beta_signup_redirect() -> RedirectResponse:
    """Redirect legacy beta-signup POST to the public register page.

    Returns 307 so any client following the redirect preserves the HTTP
    method; the frontend treats `/register?from=beta` as the canonical
    entry point and reads the `from` query param for analytics.
    """
    frontend_url = settings.FRONTEND_URL or _DEFAULT_FRONTEND_URL
    return RedirectResponse(
        url=f"{frontend_url}/register?from=beta",
        status_code=307,
    )