/* NBA球迷大全 前端逻辑（原生 JS，无构建） */
const $ = (s) => document.querySelector(s);
const $$ = (s) => [...document.querySelectorAll(s)];
const esc = (s) => String(s ?? "").replace(/[&<>"']/g, (c) => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;" }[c]));

const chatHistory = [];
let chatBusy = false;

/* ================= 标签页切换 ================= */
$$(".tab").forEach((t) => t.addEventListener("click", () => {
  $$(".tab").forEach((x) => x.classList.remove("active"));
  $$(".view").forEach((x) => x.classList.remove("active"));
  t.classList.add("active");
  $("#view-" + t.dataset.view).classList.add("active");
  loadView(t.dataset.view);
}));

function loadView(v) {
  if (v === "teams") loadTeams();
  else if (v === "players") loadPlayers("");
  else if (v === "games") loadGames("");
  else if (v === "news") loadNews("");
  else if (v === "persons") loadPersons("");
  else if (v === "standings") loadStandings("");
}

/* ================= 对话 ================= */
function addMsg(role, html) {
  const div = document.createElement("div");
  div.className = `msg ${role}`;
  div.innerHTML = `<div class="avatar">${role === "user" ? "🧑" : "🤖"}</div><div class="bubble">${html}</div>`;
  $("#chat-list").appendChild(div);
  $("#chat-list").scrollTop = $("#chat-list").scrollHeight;
  return div;
}
function showTyping() {
  const div = document.createElement("div");
  div.className = "msg bot";
  div.innerHTML = `<div class="avatar">🤖</div><div class="bubble"><span class="typing"><i></i><i></i><i></i></span></div>`;
  $("#chat-list").appendChild(div);
  $("#chat-list").scrollTop = $("#chat-list").scrollHeight;
  return div;
}
async function sendChat(text) {
  if (chatBusy) return;
  chatBusy = true;
  $("#send-btn").disabled = true;
  addMsg("user", esc(text));
  const typing = showTyping();
  try {
    const r = await fetch("/api/chat", { method: "POST", headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ message: text, history: chatHistory.slice(-8) }) });
    const d = await r.json();
    typing.remove();
    if (d.error) { addMsg("bot", `⚠️ ${esc(d.error)}`); return; }
    let html = esc(d.reply).replace(/\n/g, "<br>");
    if (d.sources && d.sources.length) {
      html += "<br>" + d.sources.map((s) => `<span class="src-tag">来源：${esc(s.tool)}</span>`).join("");
    }
    addMsg("bot", html);
    chatHistory.push({ user: text, assistant: d.reply });
    if (chatHistory.length > 20) chatHistory.splice(0, chatHistory.length - 20);
  } catch (e) {
    typing.remove();
    addMsg("bot", "⚠️ 网络异常，请稍后再试。");
  } finally {
    chatBusy = false;
    $("#send-btn").disabled = false;
  }
}
$("#send-btn").addEventListener("click", () => { const v = $("#chat-input").value.trim(); if (v) { $("#chat-input").value = ""; sendChat(v); } });
$("#chat-input").addEventListener("keydown", (e) => { if (e.key === "Enter") $("#send-btn").click(); });

/* 快捷问题 */
async function loadChips() {
  try {
    const qs = await (await fetch("/api/suggestions")).json();
    $("#chips").innerHTML = qs.map((q) => `<button>${esc(q)}</button>`).join("");
    $$("#chips button").forEach((b) => b.addEventListener("click", () => sendChat(b.textContent)));
  } catch (e) {}
}
loadChips();

/* ================= 通用请求 ================= */
async function getJSON(url) { const r = await fetch(url); if (!r.ok) throw new Error(r.status); return r.json(); }

/* ================= 球队 ================= */
async function loadTeams() {
  const teams = await getJSON("/api/teams?limit=50");
  $("#grid-teams").innerHTML = teams.map((t) => `
    <div class="card" onclick="openTeam(${t.id})">
      <h3>${esc(t.name)} <span class="en">${esc(t.name_en)}</span></h3>
      <div class="meta">🏙️ ${esc(t.city)} · ${esc(t.arena)}<br>🏆 总冠军 ×${t.champion_count} · 建队 ${t.founded} 年<br>🧑‍🏫 主帅：${esc(t.head_coach)}</div>
    </div>`).join("");
}
async function openTeam(id) {
  const d = await getJSON(`/api/teams/${id}`);
  const t = d.team;
  const roster = d.roster.map((p) => `<div>${esc(p.name)} <span class="en">${esc(p.position)} #${p.number}</span> — 场均 ${p.season.pts}分</div>`).join("");
  const games = d.recent_games.map((g) => `<div>${esc(g.game_time.slice(0, 10))} ${esc(g.away_team)} ${g.away_score ?? "?"} : ${g.home_score ?? "?"} ${esc(g.home_team)}（${g.status === "finished" ? "已结束" : "未开始"}）</div>`).join("");
  openModal(`
    <h2>${esc(t.name)} <span class="en">${esc(t.name_en)}</span></h2>
    <div class="en">${esc(t.city)} · ${esc(t.arena)} · 建队 ${t.founded} · 总冠军 ×${t.champion_count}</div>
    <p style="margin-top:8px;font-size:14px;color:#c9d4e0">${esc(t.intro)}</p>
    <div class="section-title">🧑‍🏫 主教练</div><div>${esc(t.head_coach)}</div>
    <div class="section-title">⭐ 主要球员（本赛季场均）</div>${roster || "暂无"}
    <div class="section-title">📅 近期比赛</div>${games || "暂无"}
  `);
}

/* ================= 球员 ================= */
async function loadPlayers(q) {
  const players = await getJSON(`/api/players?q=${encodeURIComponent(q)}&limit=60`);
  $("#grid-players").innerHTML = players.map((p) => `
    <div class="card" onclick="openPlayer(${p.id})">
      <h3>${esc(p.name)} <span class="en">${esc(p.position)} #${p.number}</span></h3>
      <div class="en">${esc(p.team || "")} · ${esc(p.country)}</div>
      <div class="meta">本季：<span class="big-num">${p.season.pts}</span> 分 / ${p.season.reb} 板 / ${p.season.ast} 助</div>
    </div>`).join("");
}
$("#btn-players").addEventListener("click", () => loadPlayers($("#search-players").value.trim()));
$("#search-players").addEventListener("keydown", (e) => { if (e.key === "Enter") $("#btn-players").click(); });
async function openPlayer(id) {
  const p = await getJSON(`/api/players/${id}`);
  openModal(`
    <h2>${esc(p.name)} <span class="en">${esc(p.name_en)}</span></h2>
    <div class="en">${esc(p.team || "自由球员")} · ${esc(p.position)} · #${p.number} · ${esc(p.country)}</div>
    <div class="kv">
      <div><span class="k">身高</span><span class="v">${p.height_cm} cm</span></div>
      <div><span class="k">体重</span><span class="v">${p.weight_kg} kg</span></div>
      <div><span class="k">选秀</span><span class="v">${esc(p.draft)}</span></div>
      <div><span class="k">年薪</span><span class="v">$${(p.salary_m / 100).toFixed(2)} 亿</span></div>
      <div><span class="k">本季场均</span><span class="v">${p.season.pts}分 ${p.season.reb}板 ${p.season.ast}助</span></div>
      <div><span class="k">本季防守</span><span class="v">${p.season.stl}断 ${p.season.blk}帽</span></div>
      <div><span class="k">生涯场均</span><span class="v">${p.career.pts}分 ${p.career.reb}板 ${p.career.ast}助</span></div>
      <div><span class="k">生涯场次</span><span class="v">${p.career.games} 场</span></div>
    </div>
    <div class="section-title">🏅 荣誉</div><div style="font-size:13.5px;color:#c9d4e0">${esc(p.awards || "暂无")}</div>
    <div class="section-title">📝 简介</div><div style="font-size:13.5px;color:#c9d4e0">${esc(p.bio || "暂无")}</div>
  `);
}

/* ================= 比赛 ================= */
let gameStatusFilter = "";
async function loadGames(q) {
  const url = `/api/games?q=${encodeURIComponent(q)}&limit=40`;
  const games = await getJSON(url);
  const list = games.filter((g) => !gameStatusFilter || g.status === gameStatusFilter);
  $("#list-games").innerHTML = list.map((g) => {
    const finished = g.status === "finished";
    const score = finished ? `<span class="score-big">${g.away_score}</span> : <span class="score-big">${g.home_score}</span>` : "VS";
    return `<div class="list-item" onclick="openGame(${g.id})">
      <div style="display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px">
        <span class="tag">${esc(g.round_name)}</span>
        <span class="status-pill status-${g.status}">${finished ? "已结束" : g.status === "scheduled" ? "未开始" : "进行中"}</span>
      </div>
      <div class="score-line" style="margin-top:8px">
        <span style="flex:1;text-align:right">${esc(g.away_team)}</span>
        <span class="vs">客</span>${score}<span class="vs">主</span>
        <span style="flex:1">${esc(g.home_team)}</span>
      </div>
      <div class="meta">🕐 ${esc(g.game_time)} · ${esc(g.venue)} · ${esc(g.broadcast)}</div>
    </div>`;
  }).join("") || '<div class="meta">没有符合条件的比赛</div>';
}
$$("#view-games .btn.small").forEach((b) => b.addEventListener("click", () => {
  $$("#view-games .btn.small").forEach((x) => x.classList.remove("active"));
  b.classList.add("active");
  gameStatusFilter = b.dataset.status;
  loadGames($("#search-games").value.trim());
}));
$("#btn-games").addEventListener("click", () => loadGames($("#search-games").value.trim()));
$("#search-games").addEventListener("keydown", (e) => { if (e.key === "Enter") $("#btn-games").click(); });
async function openGame(id) {
  const g = await getJSON(`/api/games/${id}`);
  const finished = g.status === "finished";
  const head = finished
    ? `<div class="score-line" style="font-size:22px;justify-content:center;margin:10px 0">
         <span>${esc(g.away_team)}</span> <span class="score-big">${g.away_score}</span> : <span class="score-big">${g.home_score}</span> <span>${esc(g.home_team)}</span></div>`
    : `<div class="score-line" style="font-size:20px;justify-content:center;margin:10px 0">${esc(g.away_team)} VS ${esc(g.home_team)}</div>`;
  const stats = (g.box_score || []).map((s) => `
    <tr><td>${esc(s.team_name)}</td><td>${esc(s.player_name)}</td>
    <td class="num">${s.points}</td><td class="num">${s.rebounds}</td><td class="num">${s.assists}</td>
    <td class="num">${s.steals}</td><td class="num">${s.blocks}</td><td class="num">${s.minutes}</td></tr>`).join("");
  openModal(`
    <h2 style="text-align:center">${esc(g.round_name)}</h2>
    ${head}
    <div style="text-align:center;color:var(--sub);font-size:13px">🕐 ${esc(g.game_time)} · ${esc(g.venue)} · ${esc(g.broadcast)}</div>
    ${stats ? `<div class="section-title">📊 球员技术统计</div>
    <table><tr><th>球队</th><th>球员</th><th>得分</th><th>篮板</th><th>助攻</th><th>抢断</th><th>盖帽</th><th>分钟</th></tr>${stats}</table>` : ""}
  `);
}

/* ================= 新闻 ================= */
async function loadNews(q) {
  const news = await getJSON(`/api/news?q=${encodeURIComponent(q)}&limit=30`);
  $("#list-news").innerHTML = news.map((n) => `
    <div class="list-item" onclick="openNews(${n.id})">
      <div style="display:flex;gap:8px;align-items:center;flex-wrap:wrap">
        <span class="tag">${n.kind === "wiki" ? "百科" : "新闻"}</span>
        <h3>${esc(n.title)}</h3>
      </div>
      <div class="meta">🕐 ${esc(n.publish_time)} · ${esc(n.source)}${n.author ? " · " + esc(n.author) : ""}</div>
      <div class="meta" style="margin-top:4px">${esc(n.summary || n.content || "")}…</div>
    </div>`).join("");
}
$("#btn-news").addEventListener("click", () => loadNews($("#search-news").value.trim()));
$("#search-news").addEventListener("keydown", (e) => { if (e.key === "Enter") $("#btn-news").click(); });
async function openNews(id) {
  const n = await getJSON(`/api/news/${id}`);
  openModal(`
    <h2>${esc(n.title)}</h2>
    <div class="en">🕐 ${esc(n.publish_time)} · ${esc(n.source)} · ${esc(n.author || "")} · ${n.kind === "wiki" ? "百科词条" : "新闻"}</div>
    <div class="news-body" style="margin-top:12px">${esc(n.content).replace(/\n/g, "<br>")}</div>
  `);
}

/* ================= 人物 ================= */
let personRoleFilter = "";
async function loadPersons(q) {
  const persons = await getJSON(`/api/persons?q=${encodeURIComponent(q)}&limit=60`);
  const list = persons.filter((p) => !personRoleFilter || p.role === personRoleFilter);
  $("#grid-persons").innerHTML = list.map((p) => `
    <div class="card" onclick="openPerson(${p.id})">
      <h3>${esc(p.name)} <span class="en">${esc(p.name_en || "")}</span></h3>
      <div class="meta"><span class="tag">${esc(p.role_cn)}</span>${esc(p.title || "")}${p.team ? " · " + esc(p.team) : ""}</div>
      <div class="meta">${esc((p.bio || "").slice(0, 60))}…</div>
    </div>`).join("");
}
$$("#view-persons .btn.small").forEach((b) => b.addEventListener("click", () => {
  $$("#view-persons .btn.small").forEach((x) => x.classList.remove("active"));
  b.classList.add("active");
  personRoleFilter = b.dataset.role;
  loadPersons($("#search-persons").value.trim());
}));
$("#btn-persons").addEventListener("click", () => loadPersons($("#search-persons").value.trim()));
$("#search-persons").addEventListener("keydown", (e) => { if (e.key === "Enter") $("#btn-persons").click(); });
async function openPerson(id) {
  const p = await getJSON(`/api/persons/${id}`);
  openModal(`
    <h2>${esc(p.name)} <span class="en">${esc(p.name_en || "")}</span></h2>
    <div class="en">${esc(p.role_cn)} · ${esc(p.title || "")}${p.team ? " · " + esc(p.team) : ""}</div>
    <div class="section-title">📝 简介</div><div style="font-size:14px;line-height:1.8;color:#c9d4e0">${esc(p.bio || "暂无")}</div>
    <div class="section-title">🏅 成就</div><div style="font-size:14px;line-height:1.8;color:#c9d4e0">${esc(p.achievements || "暂无")}</div>
  `);
}

/* ================= 排名 ================= */
let standingsConf = "";
async function loadStandings() {
  const rows = await getJSON(`/api/standings?conf=${encodeURIComponent(standingsConf)}`);
  const groups = {};
  rows.forEach((r) => { (groups[r.conference] = groups[r.conference] || []).push(r); });
  $("#wrap-standings").innerHTML = Object.entries(groups).map(([conf, list]) => `
    <h3 style="margin:14px 0 8px;color:var(--orange2)">${conf}赛区</h3>
    <table><tr><th>排名</th><th>球队</th><th>胜</th><th>负</th><th>胜率</th><th>战绩</th></tr>
    ${list.map((r) => `<tr><td class="num">${r.rank}</td><td>${esc(r.team)}</td>
      <td class="num">${r.wins}</td><td class="num">${r.losses}</td>
      <td class="num">${r.win_pct}%</td><td class="num">${r.wins}-${r.losses}</td></tr>`).join("")}
    </table>`).join("");
}
$$("#view-standings .btn.small").forEach((b) => b.addEventListener("click", () => {
  $$("#view-standings .btn.small").forEach((x) => x.classList.remove("active"));
  b.classList.add("active");
  standingsConf = b.dataset.conf;
  loadStandings();
}));

/* ================= 弹窗 ================= */
function openModal(html) {
  $("#modal-body").innerHTML = html;
  $("#modal").classList.remove("hidden");
}
$("#modal-close").addEventListener("click", () => $("#modal").classList.add("hidden"));
$("#modal").addEventListener("click", (e) => { if (e.target.id === "modal") $("#modal").classList.add("hidden"); });
document.addEventListener("keydown", (e) => { if (e.key === "Escape") $("#modal").classList.add("hidden"); });