"use strict";
/* ================= 飞行员大厅（主页）：排行榜 + 图鉴展柜背景 ================= */
let LB_SORT = "endless";

/* 图鉴已收集数（只统计合法 key） */
function codexCount() {
  let n = 0;
  for (const k in SAVE.codex)
    if (SAVE.codex[k] && (WEAPONS[k] || SUBS[k] || DRONES[k] || PASSIVES[k])) n++;
  return n;
}

async function enterHome() {
  G = null;   // 触发主循环看门狗重建实战模拟背景
  UI = "home";
  show("o-home");
  /* 刷新账号数据（stats/codex），再渲染面板与排行榜 */
  const r = await NET.api("/api/me", "GET");
  if (r.ok && r.data.user) NET._apply(r.data);
  else if (r.ok) { NET.user = null; UI = "auth"; show("o-auth"); return; } // 会话失效
  /* status===0 网络抖动：沿用现有数据，不踢出 */
  buildHomeStats();
  buildLeaderboard(LB_SORT);
}

function buildHomeStats() {
  const s = NET.stats || { bossKills: 0, endlessHigh: 0 };
  const nm = NET.user ? NET.user.username : "--";
  $("home-stats").textContent =
    `${nm} · 击坠Boss ${s.bossKills} · 图鉴 ${codexCount()}/${NET.codexTotal} · 无尽最高 ${s.endlessHigh}`;
}

/* ---------- 排行榜 ---------- */
document.querySelectorAll(".lb-tabs button").forEach((b) => {
  b.onclick = () => {
    LB_SORT = b.dataset.s;
    document.querySelectorAll(".lb-tabs button").forEach((x) => x.classList.toggle("on", x === b));
    SFX.pick();
    buildLeaderboard(LB_SORT);
  };
});

async function buildLeaderboard(sort) {
  const list = $("lb-list");
  list.innerHTML = '<div class="lb-empty">载入中...</div>';
  const r = await NET.api("/api/leaderboard?sort=" + sort, "GET");
  if (!r.ok) { list.innerHTML = '<div class="lb-empty">载入失败</div>'; return; }
  const rows = r.data.rows || [];
  list.innerHTML = "";
  if (!rows.length) { list.innerHTML = '<div class="lb-empty">虚位以待</div>'; return; }
  const meName = NET.user && NET.user.username;
  rows.forEach((row, i) => {
    const d = document.createElement("div");
    d.className = "lb-row" + (meName && row.username === meName ? " me" : "");
    const cells = [String(i + 1), row.username, String(row.bossKills), row.codexN + "/" + r.data.codexTotal, String(row.endlessHigh)];
    for (const c of cells) {
      const s = document.createElement("span");
      s.textContent = c; // textContent 防注入
      d.appendChild(s);
    }
    list.appendChild(d);
  });
}

/* ---------- 大厅/基地背景：实战模拟 ----------
   复用真实战斗引擎：随机 3主武Lv3 + 3副武Lv3 + 2僚机Lv2，自动驾驶，随机刷怪。
   与图鉴演示同源（G.demoSim 真值→自动走位/无HUD/demoSpawn），G.homeSim 标记用于静音与渲染门控 */
function startHomeSim() {
  newRun("stage", "falcon", 0);
  const build = rollRushBuild(); // 与BOSS挑战同款随机武装
  G.weapons = {}; build.m.forEach((k) => (G.weapons[k] = 3)); G.loadout = build.m.slice();
  G.subs = {}; build.s.forEach((k) => (G.subs[k] = 3)); G.subLoadout = build.s.slice();
  G.drones = {}; build.d.forEach((k) => (G.drones[k] = 2)); G.droneLoadout = build.d.slice();
  G.xpNeed = 1e9;        // 不升级打断
  G.p.inv = 999999;      // 背景模拟：玩家无伤
  G.demoSim = { home: true };
  G.homeSim = true;
}