// ===================================
// Supabase 設定
// ===================================
const SUPABASE_URL = "https://ogtlmtnjkpsxsqzqlacj.supabase.co";
const SUPABASE_KEY =
  "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6Im9ndGxtdG5qa3BzeHNxenFsYWNqIiwicm9sZSI6ImFub24iLCJpYXQiOjE3NjMyOTU3NjUsImV4cCI6MjA3ODg3MTc2NX0.JnCE7oUQwrSgGqiu-QRbwnaLBZrO8JX1_RUb37VIMFI";

const supa = window.supabase.createClient(SUPABASE_URL, SUPABASE_KEY);

// ===================================
// デバイスID
// ===================================
let deviceId = localStorage.getItem("deviceId");
if (!deviceId) {
  deviceId = crypto.randomUUID();
  localStorage.setItem("deviceId", deviceId);
}

let currentGroup = "";
let currentUser = "";
let map;
let selfMarker = null;
let otherMarkers = [];
let latestByDevice = {};

let lastLat = null;
let lastLng = null;

const DEFAULT_LAT = 35.685175;
const DEFAULT_LNG = 139.752799;

// ===================================
// URL パラメータ
// ===================================
function loadParams() {
  const p = new URLSearchParams(location.search);
  currentGroup = p.get("group");
  currentUser = p.get("user");

  document.getElementById("groupName").textContent = currentGroup;
  document.getElementById("userName").textContent = currentUser;
}

// ===================================
// ラベル付きカスタムアイコン
// ===================================
function createLabeledIcon(name, type) {
  let pinImg = "";

  if (type === "self") {
    pinImg = "https://maps.gstatic.com/mapfiles/kml/paddle/blu-stars.png";
  } else {
    pinImg =
      "https://raw.githubusercontent.com/pointhi/leaflet-color-markers/master/img/marker-icon-green.png";
  }

  return L.divIcon({
    className: "custom-pin",
    html: `
      <div class="pin-label">${name}</div>
      <img src="${pinImg}" class="pin-image">
    `,
    iconSize: [40, 55],
    iconAnchor: [20, 50],
  });
}

// ===================================
// 現在地取得
// ===================================
function getPosition() {
  return new Promise((res, rej) => {
    navigator.geolocation.getCurrentPosition(
      (pos) => res(pos.coords),
      rej,
      { enableHighAccuracy: true }
    );
  });
}

// ===================================
// 地図生成
// ===================================
function initMap(lat, lng) {
  map = L.map("map").setView([lat, lng], 15);

  L.tileLayer("https://tile.openstreetmap.org/{z}/{x}/{y}.png", {
    maxZoom: 19,
  }).addTo(map);
}

// ===================================
// 自分のピン（再描画方式）
// ===================================
function renderSelfMarker() {
  if (selfMarker) map.removeLayer(selfMarker);

  selfMarker = L.marker([lastLat, lastLng], {
    icon: createLabeledIcon(currentUser, "self"),
    interactive: true,
    bubblingMouseEvents: true,
  }).addTo(map);

  // ★ クリックで中央へ（アニメなし）
  selfMarker.on("click", () => {
    map.setView([lastLat, lastLng], 16, { animate: true });
  });
}

// ===================================
// 保存
// ===================================
async function saveMyLocation(lat, lng) {
  await supa
    .from("locations")
    .delete()
    .eq("group_name", currentGroup)
    .eq("device_id", deviceId);

  await supa.from("locations").insert({
    group_name: currentGroup,
    user_name: currentUser,
    device_id: deviceId,
    lat,
    lng,
  });
}

// ===================================
// メンバー一覧
// ===================================
function showMemberList(latestByDevice) {
  const list = document.getElementById("memberList");
  list.innerHTML = "";

  Object.values(latestByDevice).forEach((row) => {
    const li = document.createElement("li");

    const updated = new Date(row.updated_at);
    const diff = (Date.now() - updated) / 1000;
    li.classList.add(diff < 30 ? "online" : "offline");

    const icon = document.createElement("div");
    icon.className = "member-icon";
    li.appendChild(icon);

    li.append(row.user_name);

    li.addEventListener("click", () => {
      if (row.device_id === deviceId) {
        map.setView([lastLat, lastLng], 16, { animate: true });
        return;
      }

      const mk = otherMarkers.find((m) => m._myDeviceId === row.device_id);
      if (!mk) return;

      map.setView([row.lat, row.lng], 16, { animate: true });
    });

    list.appendChild(li);
  });
}

// ===================================
// 他ユーザー描画
// ===================================
async function showOtherUsers() {
  const { data } = await supa
    .from("locations")
    .select("*")
    .eq("group_name", currentGroup)
    .order("updated_at", { ascending: false });

  if (!Array.isArray(data)) return;

  latestByDevice = {};
  for (const row of data) {
    if (!latestByDevice[row.device_id]) latestByDevice[row.device_id] = row;
  }

  showMemberList(latestByDevice);

  otherMarkers.forEach((m) => map.removeLayer(m));
  otherMarkers = [];

  Object.values(latestByDevice).forEach((row) => {
    if (row.device_id === deviceId) return;

    const mk = L.marker([row.lat, row.lng], {
      icon: createLabeledIcon(row.user_name, "other"),
      interactive: true,
      bubblingMouseEvents: true,
    }).addTo(map);

    mk._myDeviceId = row.device_id;

    mk.on("click", () => {
      map.setView([row.lat, row.lng], 16, { animate: true });
    });

    otherMarkers.push(mk);
  });
}

// ===================================
// main
// ===================================
async function main() {
  loadParams();

  let lat = DEFAULT_LAT;
  let lng = DEFAULT_LNG;

  try {
    const pos = await getPosition();
    lat = pos.latitude;
    lng = pos.longitude;
  } catch {}

  lastLat = lat;
  lastLng = lng;

  initMap(lat, lng);
  renderSelfMarker();

  await saveMyLocation(lat, lng);
  await showOtherUsers();

  // 自分の位置更新
  setInterval(async () => {
    try {
      const pos = await getPosition();
      lastLat = pos.latitude;
      lastLng = pos.longitude;

      renderSelfMarker();
      await saveMyLocation(lastLat, lastLng);
    } catch {}
  }, 8000);

  // 他のユーザー位置更新
  setInterval(showOtherUsers, 2000);

  const exit = document.getElementById("exitBtn");
  if (exit) exit.onclick = () => (location.href = "index.html");
}

window.addEventListener("DOMContentLoaded", main);