// ===============================
// 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 userMarker;
let otherMarkers = [];
let latestByDevice = {};

let lastLat = null;
let lastLng = null;

// デフォルト
const DEFAULT_LAT = 35.685175;
const DEFAULT_LNG = 139.752799;

// ===============================
// URL 読み込み
// ===============================
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;
}

// ===============================
// Google Maps 風ラベルつきピン作成
// ===============================
function createLabeledIcon(name, isSelf) {
  const pinColor = isSelf ? "blue" : "red";
  const pinImg =
    pinColor === "blue"
      ? "https://raw.githubusercontent.com/pointhi/leaflet-color-markers/master/img/marker-icon-blue.png"
      : "https://raw.githubusercontent.com/pointhi/leaflet-color-markers/master/img/marker-icon-red.png";

  return L.divIcon({
    className: "custom-pin",
    html: `
      <div class="pin-label">${name}</div>
      <img src="${pinImg}" class="pin-image">
    `,
    iconSize: [30, 50],
    iconAnchor: [15, 45],
  });
}

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

// ===============================
// 地図初期化
// ===============================
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);

  // ★ 自分のラベルつきピン
  userMarker = L.marker([lat, lng], {
    icon: createLabeledIcon(currentUser, true)
  }).addTo(map);

  // ★ 自分のピン1回タップで中央へ
  userMarker.on("click", () => {
    map.setView([lastLat, lastLng], 16, { animate: true });
  });
}

// ===============================
// 自分の位置保存
// ===============================
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");

    // オンライン判定
    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);

    // メンバー一覧クリック → ピンへズーム
    li.addEventListener("click", () => {
      const mk = otherMarkers.find((m) => m._myDeviceId === row.device_id);
      if (!mk) return;

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

      const wrap = mk._icon.parentElement;
      wrap.classList.remove("pulse-marker");
      void wrap.offsetWidth;
      wrap.classList.add("pulse-marker");
    });

    list.appendChild(li);
  });
}

// ===============================
// 他ユーザーの描画
// ===============================
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;
  }

  // 自分の抜け落ち防止
  if (!latestByDevice[deviceId]) {
    latestByDevice[deviceId] = {
      user_name: currentUser,
      device_id: deviceId,
      lat: lastLat,
      lng: lastLng,
      updated_at: new Date().toISOString(),
    };
  }

  showMemberList(latestByDevice);

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

  // ★ 他人のラベルつきピン表示
  Object.values(latestByDevice).forEach((row) => {
    if (row.device_id === deviceId) return;

    const mk = L.marker([row.lat, row.lng], {
      icon: createLabeledIcon(row.user_name, false),
    }).addTo(map);

    mk._myDeviceId = row.device_id;

    // ★ ピンを1回タップで中央へ
    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);

  await saveMyLocation(lastLat, lastLng);
  await showOtherUsers();

  // 自分の位置更新
  setInterval(async () => {
    try {
      const pos = await getPosition();
      lastLat = pos.latitude;
      lastLng = pos.longitude;
      await saveMyLocation(lastLat, lastLng);
    } catch {}
  }, 10000);

  // 他人の位置更新
  setInterval(showOtherUsers, 2000);

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

window.addEventListener("DOMContentLoaded", main);