import re
from datetime import date, timedelta
from .base import BaseProfile

HEADERS = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36",
    "Accept": "application/json",
}


class GuestlineProfile(BaseProfile):
    name = "guestline"
    label = "Guestline"
    required_params = [
        {"key": "hotel_id",       "label": "Hotel ID",       "help": "e.g. THREEWAYS — from the booking URL ?hotel= parameter"},
        {"key": "collection_id",  "label": "Collection ID",  "help": "e.g. MT — the path segment before /availability in the booking URL"},
    ]

    @classmethod
    def detect(cls, url: str) -> dict | None:
        # Matches: https://booking.eu.guestline.app/MT/availability?hotel=THREEWAYS
        m = re.search(r'booking\.(?:eu\.)?guestline\.app/([^/?\s]+)/availability\?hotel=([^&\s]+)', url)
        if m:
            return {"collection_id": m.group(1), "hotel_id": m.group(2)}
        return None

    async def fetch_arrival_dates(self, client, params: dict) -> list[str]:
        hotel_id = params["hotel_id"]
        today = date.today()
        url = f"https://booking.eu.guestline.app/api/availabilities/{hotel_id}/arrivals"
        r = await client.get(url, params={
            "month": today.month, "year": today.year,
            "adults": 2, "children": 0, "count": 12,
        }, headers=HEADERS, timeout=20)
        r.raise_for_status()
        return [a["date"] for a in r.json().get("arrivals", [])]

    async def fetch_night_rates(self, client, params: dict, arrival: str, nights: int = 1) -> list[dict]:
        hotel_id = params["hotel_id"]
        collection_id = params.get("collection_id", "MT")
        dep = (date.fromisoformat(arrival) + timedelta(days=nights)).isoformat()
        url = f"https://booking.eu.guestline.app/api/availabilities/{collection_id}/{hotel_id}"
        r = await client.get(url, params={
            "arrival": arrival, "departure": dep, "adults": 2, "children": 0,
        }, headers=HEADERS, timeout=20)
        if r.status_code == 404:
            return []
        r.raise_for_status()
        return r.json().get("rooms", [])