"use strict";
/* ==========================================================================
   xiaobai-datahub 管理后台 · 第九版核心引擎（A/B/C 三方向唯一共用来源）
   —— 会话/主题/轮询/真实事件识别/危险操作/路由，三个布局文件只消费这里的
   state、Bus 事件与 API，禁止各自再写一套请求或业务判断。
   ========================================================================== */
window.Core = (function () {
  function $(id) { return document.getElementById(id); }
  function esc(value) {
    return String(value ?? "").replace(/[&<>"]/g, (ch) => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;" }[ch]));
  }
  function timeShort(value) {
    const s = String(value ?? "");
    const m = s.match(/(\d{2}:\d{2}:\d{2})/);
    return m ? m[1] : s.replace("T", " ").slice(0, 16);
  }
  function clamp(v, a, b) { return Math.max(a, Math.min(b, v)); }
  function table(headers, rows) {
    const thead = headers.map((h) => `<th>${esc(h)}</th>`).join("");
    const body = rows.length
      ? rows.map((cols) => `<tr>${cols.map((c) => `<td>${c}</td>`).join("")}</tr>`).join("")
      : `<tr><td colspan="${headers.length}">暂无数据</td></tr>`;
    return `<table class="grid"><thead><tr>${thead}</tr></thead><tbody>${body}</tbody></table>`;
  }

  const state = {
    csrf: "",
    layout: "flowline",
    releaseDate: "",
    reduced: matchMedia("(prefers-reduced-motion: reduce)").matches,
    visible: document.visibilityState === "visible",
    online: navigator.onLine,
    data: { overview: null, sources: null, jobs: null, batches: null, datasets: null, audit: null },
  };

  async function api(path, options = {}) {
    const headers = Object.assign({ "Content-Type": "application/json" }, options.headers || {});
    if (state.csrf && (options.method || "GET") !== "GET") headers["X-CSRF-Token"] = state.csrf;
    const res = await fetch(path, Object.assign({}, options, { headers, credentials: "same-origin" }));
    const body = await res.json();
    if (!res.ok) {
      const msg = (body.error && body.error.message) || body.error || res.statusText;
      throw new Error(msg);
    }
    return body;
  }

  /* ---------------------------------------------------------------- 事件总线
     'data'  → 任一真实拉取完成，payload = key（overview/sources/...），布局重绘用
     'event' → 已经发生的真实事件（供三方向各自演绎接力/推进/贯穿动效）
               payload = { channel, kind, n, meta }
               channel: tushare|eastmoney|tencent|ifind|junction|tx|audit
               kind: ok|error|unconfigured|rollback|pub
     'theme' → 主题切换，payload = 'day'|'night'
     'reduced' → 减弱动效状态变化，payload = boolean
  */
  const Bus = (() => {
    const listeners = {};
    return {
      on(type, fn) { (listeners[type] = listeners[type] || []).push(fn); return () => this.off(type, fn); },
      off(type, fn) { if (listeners[type]) listeners[type] = listeners[type].filter((f) => f !== fn); },
      emit(type, payload) { (listeners[type] || []).slice().forEach((fn) => { try { fn(payload); } catch (e) { console.error(e); } }); },
    };
  })();

  /* ---------------------------------------------------------------- 常量与标签 */
  const FLOW_PROVIDERS = ["tushare", "eastmoney", "tencent", "ifind"];
  const FLOW_LABEL = {
    tushare: "Tushare", eastmoney: "东方财富", tencent: "腾讯行情", ifind: "iFinD",
  };
  const FLOW_ROLE = {
    tushare: "官方盘后", eastmoney: "盘中观察", tencent: "盘中观察", ifind: "授权实时",
  };
  const EOD_LABELS = {
    pending_first_attempt: "等待首次尝试", waiting_upstream: "等待上游", done: "已成功",
    cutoff_failed: "已截止失败", closed_day: "休市",
  };
  const REV_LABELS = {
    waiting_review: "等待复核", review_failed: "复核失败", aligned: "已追平",
    cutoff: "已截止", pending_publish: "待发布", closed_day: "休市",
  };
  const PHASE_LABELS = { pre: "盘前", intraday: "盘中", lunch: "午间", eod: "盘后", closed: "休市" };
  function todayYmd() {
    const d = new Date(); const pad = (n) => String(n).padStart(2, "0");
    return `${d.getFullYear()}${pad(d.getMonth() + 1)}${pad(d.getDate())}`;
  }
  if (!state.releaseDate) state.releaseDate = todayYmd();

  function chipClass(s) {
    const map = {
      ok: "ok", error: "err", warn: "warn", unknown: "unknown", unconfigured: "unconfigured",
      published: "ok", pending: "warn", missing: "err", building: "warn", staged: "warn", failed: "err",
      running: "warn", queued: "info", idle: "", success: "ok",
    };
    return map[s] ?? "";
  }
  function chipHtml(s, textOverride) {
    return `<span class="chip ${chipClass(s)}">${esc(textOverride ?? s)}</span>`;
  }

  /* 真实健康态归一化：tushare 走断路器术语（closed=健康/half_open=试探/open=已跳闸），
     其余三路走 ok/empty/error/unconfigured；没有探测记录时是 unknown。
     四态必须原样区分显示，不得把 unknown 和 error 混为一谈，也不得把断路器
     "closed"(健康) 误读成红色错误。 */
  function linkState(health) {
    const s = (health && health.state) || "unknown";
    if (s === "ok" || s === "empty" || s === "closed") return "ok";
    if (s === "half_open") return "warn";
    if (s === "unconfigured" || s === "reserved") return "unconfigured";
    if (s === "unknown") return "unknown";
    return "error"; // open（断路器已跳闸）、error
  }
  function linkLampClass(link) {
    if (link === "ok") return "on";
    if (link === "error") return "err on";
    return "off"; // warn / unknown / unconfigured 灯位统一暗灭，状态文字由 chip 承载
  }

  /* ---------------------------------------------------------------- 真实事件识别
     只认已经发生的事实：recent_calls / probe 健康探测 / job runs / batch 状态变化 /
     publication 发布时间变化 / audit 新行。没有真实变化就不发事件，不臆造。 */
  const Seen = {
    callsMax: -1, jobRunsMax: -1, auditMax: -1,
    batchState: new Map(), pubPublishedAt: new Map(),
    firstOverview: true, firstJobs: true, firstAudit: true, firstBatches: true,
  };

  async function pollOverview() {
    const data = await api("/admin/api/overview");
    const wasFirst = Seen.firstOverview;
    const calls = data.recent_calls || [];
    let maxId = Seen.callsMax;
    const fresh = [];
    for (const c of calls) { if (c.id > Seen.callsMax) fresh.push(c); if (c.id > maxId) maxId = c.id; }
    Seen.callsMax = maxId;
    Seen.firstOverview = false;
    if (!wasFirst && fresh.length) Bus.emit("event", { channel: "tushare", kind: fresh.some((c) => !c.ok) ? "error" : "ok", n: fresh.length, meta: { fresh } });
    state.data.overview = data;
    Bus.emit("data", "overview");
  }

  async function pollSources() {
    const data = await api("/admin/api/sources");
    for (const item of data.items) {
      if (!FLOW_PROVIDERS.includes(item.provider)) continue;
      const health = item.health || {};
      const link = linkState(health);
      item._link = link;
      if (item.provider !== "tushare" && link !== "unconfigured" && link !== "unknown") {
        Bus.emit("event", { channel: item.provider, kind: link === "ok" ? "ok" : link === "warn" ? "warn" : "error", n: 1, meta: { item } });
      }
    }
    state.data.sources = data;
    Bus.emit("data", "sources");
  }

  async function pollJobs() {
    const data = await api("/admin/api/jobs");
    const wasFirst = Seen.firstJobs;
    let maxId = Seen.jobRunsMax;
    const fresh = [];
    for (const r of data.runs || []) { if (r.id > Seen.jobRunsMax) fresh.push(r); if (r.id > maxId) maxId = r.id; }
    Seen.jobRunsMax = maxId;
    Seen.firstJobs = false;
    if (!wasFirst && fresh.length) {
      const anyFail = fresh.some((r) => r.state === "failed");
      Bus.emit("event", { channel: "junction", kind: anyFail ? "error" : "ok", n: fresh.length, meta: { fresh } });
    }
    state.data.jobs = data;
    state.freshJobRuns = fresh;
    Bus.emit("data", "jobs");
  }

  async function pollBatches() {
    const date = state.releaseDate || "";
    const data = await api(`/admin/api/batches?date=${encodeURIComponent(date)}`);
    const wasFirst = Seen.firstBatches;
    let changed = false;
    for (const b of data.batches || []) {
      const prev = Seen.batchState.get(b.batch_id);
      if (prev !== b.state) { changed = true; Seen.batchState.set(b.batch_id, b.state); }
    }
    let published = false;
    for (const p of data.publications || []) {
      const key = `${p.dataset}:${p.trade_date}`;
      const prev = Seen.pubPublishedAt.get(key);
      if (prev !== p.published_at) { published = true; Seen.pubPublishedAt.set(key, p.published_at); }
    }
    Seen.firstBatches = false;
    if (!wasFirst && published) Bus.emit("event", { channel: "tx", kind: "pub", n: 1, meta: {} });
    else if (!wasFirst && changed) Bus.emit("event", { channel: "junction", kind: "ok", n: 1, meta: {} });
    state.data.batches = data;
    Bus.emit("data", "batches");
  }

  async function pollDatasets() {
    const data = await api(`/admin/api/datasets?date=${encodeURIComponent("")}`);
    state.data.datasets = data;
    Bus.emit("data", "datasets");
  }

  async function pollAudit() {
    const data = await api("/admin/api/audit");
    const wasFirst = Seen.firstAudit;
    let maxId = Seen.auditMax;
    const fresh = [];
    for (const a of data.items || []) { if (a.id > Seen.auditMax) fresh.push(a); if (a.id > maxId) maxId = a.id; }
    Seen.auditMax = maxId;
    Seen.firstAudit = false;
    if (!wasFirst && fresh.length) {
      const rollback = fresh.some((a) => String(a.action).includes("rollback"));
      Bus.emit("event", { channel: "audit", kind: rollback ? "rollback" : "ok", n: fresh.length, meta: { fresh } });
    }
    state.data.audit = data;
    Bus.emit("data", "audit");
  }

  const Poller = (() => {
    const specs = [
      { key: "overview", fn: pollOverview, every: 20000 },
      { key: "sources", fn: pollSources, every: 45000 },
      { key: "jobs", fn: pollJobs, every: 25000 },
      { key: "batches", fn: pollBatches, every: 25000 },
      { key: "datasets", fn: pollDatasets, every: 60000 },
      { key: "audit", fn: pollAudit, every: 20000 },
    ];
    const timers = new Map();
    function runtimeAvailable() { return state.visible && state.online; }
    function tickOne(spec) { spec.fn().catch((err) => console.error(`[hub] poll ${spec.key} failed`, err)); }
    function schedule(spec) {
      clearTimer(spec.key);
      const t = setInterval(() => { if (runtimeAvailable()) tickOne(spec); }, spec.every);
      timers.set(spec.key, t);
    }
    function clearTimer(key) { if (timers.has(key)) { clearInterval(timers.get(key)); timers.delete(key); } }
    function startAll() { specs.forEach((spec, i) => { setTimeout(() => { tickOne(spec); schedule(spec); }, i * 160); }); }
    function stopAll() { specs.forEach((s) => clearTimer(s.key)); }
    function pause() { stopAll(); }
    function resume() { specs.forEach((spec) => { tickOne(spec); schedule(spec); }); }
    return { startAll, stopAll, pause, resume, runtimeAvailable };
  })();

  function onRuntimeAvailabilityChange() {
    if (Poller.runtimeAvailable()) Poller.resume();
    else Poller.pause();
    Bus.emit("runtime", Poller.runtimeAvailable());
  }
  document.addEventListener("visibilitychange", () => { state.visible = document.visibilityState === "visible"; onRuntimeAvailabilityChange(); });
  window.addEventListener("online", () => { state.online = true; onRuntimeAvailabilityChange(); });
  window.addEventListener("offline", () => { state.online = false; onRuntimeAvailabilityChange(); });

  /* ---------------------------------------------------------------- 主题 */
  function applyTheme(theme) {
    const root = document.documentElement;
    if (theme === "night") root.setAttribute("data-theme", "night");
    else root.removeAttribute("data-theme");
    try { localStorage.setItem("hub_theme", theme); } catch { /* ignore */ }
    Bus.emit("theme", theme);
  }
  function currentTheme() { return document.documentElement.getAttribute("data-theme") === "night" ? "night" : "day"; }
  function toggleTheme() { applyTheme(currentTheme() === "night" ? "day" : "night"); }
  function bootTheme() {
    const saved = (() => { try { return localStorage.getItem("hub_theme"); } catch { return null; } })();
    applyTheme(saved === "night" ? "night" : "day");
  }

  /* ---------------------------------------------------------------- 减少动态效果 */
  const REDUCE_MQ = matchMedia("(prefers-reduced-motion: reduce)");
  function applyReduced(reduced) {
    state.reduced = reduced;
    document.documentElement.classList.toggle("reduced", reduced);
    Bus.emit("reduced", reduced);
  }
  REDUCE_MQ.addEventListener("change", (e) => applyReduced(e.matches));

  /* ---------------------------------------------------------------- 危险操作确认 */
  async function dangerous(kind, dataset, onDone) {
    const date = state.releaseDate || "";
    const ds = dataset || prompt("数据集（daily/valuation/moneyflow/auction/stocks→A组整批；index_daily→B组；或 reference）", "daily");
    if (!ds) return;
    const password = prompt("二次确认：输入管理密码");
    if (!password) return;
    const confirmWord = `${ds}:${date}`;
    const typed = prompt(`请输入确认词：${confirmWord}`);
    if (!typed) return;
    const path = kind === "rollback" ? "/admin/api/rollback" : "/admin/api/backfill";
    try {
      const result = await api(path, { method: "POST", body: JSON.stringify({ dataset: ds, trade_date: date, password, confirm: typed }) });
      if (kind === "rollback") Bus.emit("event", { channel: "tx", kind: "rollback", n: 1, meta: {} });
      await pollBatches();
      await pollAudit();
      if (onDone) onDone(result);
    } catch (err) {
      alert(err.message);
    }
  }

  async function probeSource(provider) {
    const result = await api(`/admin/api/sources/${provider}/probe`, { method: "POST", body: "{}" });
    if (FLOW_PROVIDERS.includes(provider)) {
      const link = linkState(result);
      Bus.emit("event", { channel: provider, kind: link === "ok" ? "ok" : link === "warn" ? "warn" : "error", n: 1, meta: { manual: true } });
    }
    await pollSources();
    return result;
  }

  async function runJob(jobId, tradeDate) {
    const result = await api(`/admin/api/jobs/${jobId}/run`, { method: "POST", body: JSON.stringify({ trade_date: tradeDate || "" }) });
    await pollJobs();
    return result;
  }

  /* ---------------------------------------------------------------- 路由：?layout=flowline|ledger|strata
     单一静态文件，只靠查询参数区分三页；不改后端路由。
     支持直接打开 / 刷新 / 浏览器前进后退。 */
  const LAYOUT_NAMES = ["flowline", "ledger", "strata"];
  const Router = (() => {
    let mounted = null;
    function parse() {
      const qs = new URLSearchParams(location.search);
      const l = qs.get("layout");
      return LAYOUT_NAMES.includes(l) ? l : "flowline";
    }
    function urlFor(name) {
      const qs = new URLSearchParams(location.search);
      qs.set("layout", name);
      return `${location.pathname}?${qs.toString()}${location.hash}`;
    }
    function navigate(name) {
      if (!LAYOUT_NAMES.includes(name)) return;
      if (parse() === name) return;
      history.pushState(null, "", urlFor(name));
      mount(name);
    }
    function mount(name) {
      if (mounted && window.HUB_LAYOUTS[mounted] && window.HUB_LAYOUTS[mounted].unmount) {
        try { window.HUB_LAYOUTS[mounted].unmount(); } catch (e) { console.error(e); }
      }
      state.layout = name;
      mounted = name;
      document.querySelectorAll("#layoutSwitch button[data-layout]").forEach((btn) => {
        const on = btn.dataset.layout === name;
        if (on) btn.setAttribute("aria-current", "page"); else btn.removeAttribute("aria-current");
      });
      const root = $("page-root");
      const impl = window.HUB_LAYOUTS[name];
      if (!impl) { root.innerHTML = `<div class="page-shell">布局未加载：${esc(name)}</div>`; return; }
      impl.mount(root);
    }
    function boot() {
      document.querySelectorAll("#layoutSwitch button[data-layout]").forEach((btn) => {
        btn.addEventListener("click", () => navigate(btn.dataset.layout));
      });
      window.addEventListener("popstate", () => mount(parse()));
      mount(parse());
    }
    return { boot, navigate, current: parse, urlFor };
  })();

  return {
    $, esc, timeShort, clamp, table,
    state, api, Bus, Poller, Router,
    FLOW_PROVIDERS, FLOW_LABEL, FLOW_ROLE, EOD_LABELS, REV_LABELS, PHASE_LABELS,
    todayYmd, chipClass, chipHtml, linkState, linkLampClass,
    applyTheme, currentTheme, toggleTheme, bootTheme,
    applyReduced, REDUCE_MQ,
    dangerous, probeSource, runJob,
    pollOverview, pollSources, pollJobs, pollBatches, pollDatasets, pollAudit,
  };
})();