import { getCityByName } from "./locations.js";

export async function fetchPrayerTimes(cityName = "Edremit", lat, lon) {
  try {
    let fetchLat = lat;
    let fetchLon = lon;

    // Eğer enlem/boylam verilmediyse şehir listemizden koordinatları çekiyoruz
    if (fetchLat === undefined || fetchLon === undefined) {
      const cityObj = getCityByName(cityName);
      if (cityObj) {
        fetchLat = cityObj.lat;
        fetchLon = cityObj.lon;
      }
    }

    let url;
    if (fetchLat !== undefined && fetchLon !== undefined) {
      // Diyanet İşleri Başkanlığı Metodu = 13
      url = `https://api.aladhan.com/v1/timings?latitude=${fetchLat}&longitude=${fetchLon}&method=13`;
    } else {
      url = `https://api.aladhan.com/v1/timingsByCity?city=Edremit&country=Turkey&method=13`;
    }

    const res = await fetch(url);
    if (!res.ok) {
      throw new Error("Namaz vakitleri alınamadı");
    }

    const data = await res.json();
    const t = data.data.timings;

    return {
      fajr: t.Fajr,
      sunrise: t.Sunrise,
      dhuhr: t.Dhuhr,
      asr: t.Asr,
      maghrib: t.Maghrib,
      isha: t.Isha,
      imsak: t.Imsak,
      currentPrayer: getCurrentPrayer(t),
    };
  } catch (err) {
    console.error("Namaz vakti hatası:", err);
    return null;
  }
}

function getCurrentPrayer(timings) {
  const now = new Date();
  const currentMinutes = now.getHours() * 60 + now.getMinutes();

  const parseTime = (timeStr) => {
    if (!timeStr) return 0;
    const [h, m] = timeStr.split(":").map(Number);
    return h * 60 + m;
  };

  const imsak = parseTime(timings.Imsak);
  const dhuhr = parseTime(timings.Dhuhr);
  const asr = parseTime(timings.Asr);
  const maghrib = parseTime(timings.Maghrib);
  const isha = parseTime(timings.Isha);

  if (currentMinutes >= imsak && currentMinutes < dhuhr)
    return { name: "Sabah", key: "fajr" };
  if (currentMinutes >= dhuhr && currentMinutes < asr)
    return { name: "Öğle", key: "dhuhr" };
  if (currentMinutes >= asr && currentMinutes < maghrib)
    return { name: "İkindi", key: "asr" };
  if (currentMinutes >= maghrib && currentMinutes < isha)
    return { name: "Akşam", key: "maghrib" };
  return { name: "Yatsı", key: "isha" };
}