"""Public booking page blueprint (#17): the customer-facing /book/<slug> page,
embedded via iframe into a client's landing page. This route only resolves a
slug to a client and renders the slot-grid/booking-form page around it -- all
booking mutations still go through booking_api.py's JSON API (#16), which the
page's own JS calls via fetch.

IP rate limiting on these public routes is enforced at the Caddy layer (per
#17's acceptance criteria), not in Flask -- see deploy/booking/RATE_LIMIT.md
for the Caddy config to apply by hand on the homelab.
"""
from flask import Blueprint, abort, render_template, request

import booking_db as bdb

bp = Blueprint("public_booking", __name__)

DEFAULT_BRAND_COLOR = "#0f8a7e"


@bp.get("/book/<slug>")
def book_page(slug):
    client = bdb.get_client_by_slug(slug)
    if client is None:
        abort(404)
    client_id = client["client_id"]
    locations = bdb.list_active_locations(client_id)
    active_location_ids = {l["location_id"] for l in locations}
    # A resource whose Filiale was deactivated shouldn't stay bookable even if
    # the resource row itself is still active.
    resources = [r for r in bdb.list_active_resources(client_id)
                 if r["location_id"] in active_location_ids]
    services = bdb.list_active_services(client_id)
    if not locations or not resources or not services:
        # No bookable services/resources configured yet -- nothing to show a
        # customer rather than a broken/empty booking form.
        abort(404)
    return render_template(
        "book.html",
        client_id=client_id,
        business_name=client.get("business_name") or slug,
        locations=[{"location_id": l["location_id"], "name": l["name"]} for l in locations],
        resources=[{"resource_id": r["resource_id"], "name": r["name"],
                    "location_id": r["location_id"]} for r in resources],
        services=[{"service_id": s["service_id"], "name": s["name"],
                   "duration_minutes": s["duration_minutes"],
                   "price": float(s["price"]) if s["price"] is not None else None}
                  for s in services],
        brand_color=request.args.get("color") or DEFAULT_BRAND_COLOR,
    )