/* ============================================================
 * AI Scheduler 前端核心库（零依赖，全局命名空间 Core）
 * - 统一 API 调用（管理后台 JWT / 微信代理 X-finder-TOKEN）
 * - 本地存储（登录态、微信 Token）
 * - 通用 UI：toast / modal / confirm / loading / 上传
 * ============================================================ */
(function (global) {
  "use strict";

  var ADMIN_BASE = "/api/v1/admin/advice/admin/";
  var WX_BASE = ADMIN_BASE + "wx/";
  var UPLOAD_URL = "/api/v1/admin/advice/admin/file/upload";

  var KEYS = {
    token: "as_admin_token",
    admin: "as_admin_info",
    wxToken: "as_wx_finder_token",
    wxApp: "as_wx_app_info",
    wxBrief: "as_wx_brief_cache",
    project: "as_active_project"
  };

  /* ---------------- 本地存储 ---------------- */
  function store(key, val) {
    if (val === undefined) {
      try { return JSON.parse(localStorage.getItem(key)); } catch (e) { return null; }
    }
    if (val === null) { localStorage.removeItem(key); return; }
    localStorage.setItem(key, JSON.stringify(val));
  }

  /* ---------------- 弹窗基础设施 ---------------- */
  function el(html) {
    var d = document.createElement("div");
    d.innerHTML = html.trim();
    return d.firstElementChild;
  }

  function esc(s) {
    if (s === undefined || s === null) return "";
    return String(s).replace(/[&<>"']/g, function (c) {
      return { "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;" }[c];
    });
  }

  var toastWrap = null;
  function toast(msg, type) {
    if (!toastWrap) {
      toastWrap = el('<div class="toast-wrap"></div>');
      document.body.appendChild(toastWrap);
    }
    var icons = { ok: "✓", err: "✕", info: "ℹ" };
    var t = el(
      '<div class="toast ' + (type || "info") + '">' +
      '<span class="ico">' + (icons[type] || icons.info) + "</span>" +
      "<span>" + esc(msg) + "</span></div>"
    );
    toastWrap.appendChild(t);
    setTimeout(function () {
      t.style.transition = "opacity .3s ease, transform .3s ease";
      t.style.opacity = "0";
      t.style.transform = "translateX(12px)";
      setTimeout(function () { t.remove(); }, 320);
    }, type === "err" ? 4200 : 2600);
  }

  var loadingMask = null;
  function loading(show, text) {
    if (show) {
      if (loadingMask) { loadingMask.querySelector(".lm-text").textContent = text || "处理中…"; return; }
      loadingMask = el(
        '<div class="loading-mask"><span class="spin lg"></span><span class="lm-text">' +
        esc(text || "处理中…") + "</span></div>"
      );
      document.body.appendChild(loadingMask);
    } else if (loadingMask) {
      loadingMask.remove();
      loadingMask = null;
    }
  }

  /**
   * modal({ title, body, footer, width(''|'wide'|'xwide'), onMount(el) })
   * 返回 { close, root }
   */
  function modal(opts) {
    opts = opts || {};
    var widthCls = opts.width ? " " + opts.width : "";
    var mask = el(
      '<div class="modal-mask"><div class="modal' + widthCls + '">' +
      '<div class="modal-head"><span>' + esc(opts.title || "") + '</span><span class="spacer"></span>' +
      '<span class="x" title="关闭">✕</span></div>' +
      '<div class="modal-body">' + (opts.body || "") + "</div>" +
      (opts.footer === null ? "" : '<div class="modal-foot">' + (opts.footer || '<button class="btn primary mf-ok">确定</button>') + "</div>") +
      "</div></div>"
    );
    document.body.appendChild(mask);
    var api = {
      root: mask.querySelector(".modal"),
      body: mask.querySelector(".modal-body"),
      close: function () { mask.remove(); }
    };
    mask.querySelector(".x").onclick = api.close;
    mask.addEventListener("mousedown", function (e) {
      if (e.target === mask) {
        // 不关闭：日期/时间选择器弹出层交互时 document.activeElement 仍为 date input
        var ae = document.activeElement;
        if (ae && (ae.type === "date" || ae.type === "datetime-local")) return;
        api.close();
      }
    });
    if (opts.onMount) opts.onMount(api);
    return api;
  }

  function confirm(msg, title) {
    return new Promise(function (resolve) {
      var m = modal({
        title: title || "操作确认",
        body: '<div style="font-size:13.5px;line-height:1.8">' + esc(msg) + "</div>",
        footer: '<button class="btn ghost cm-no">取消</button><button class="btn danger cm-yes">确认</button>'
      });
      m.root.querySelector(".cm-no").onclick = function () { m.close(); resolve(false); };
      m.root.querySelector(".cm-yes").onclick = function () { m.close(); resolve(true); };
      m.root.closest(".modal-mask").querySelector(".x").onclick = function () { m.close(); resolve(false); };
    });
  }

  /* ---------------- 请求封装 ---------------- */
  function buildError(msg, code) {
    var e = new Error(msg || "请求失败");
    e.code = code;
    return e;
  }

  function parseBody(res) {
    return res.text().then(function (txt) {
      if (!txt) return {};
      try { return JSON.parse(txt); } catch (e) { return { message: txt }; }
    });
  }

  /** 管理后台接口：POST JSON，自动携带 JWT，解包 {code,message,data} */
  function api(path, body) {
    var headers = { "Content-Type": "application/json" };
    var token = store(KEYS.token);
    if (token) headers["Authorization"] = "Bearer " + token;
    return fetch(ADMIN_BASE + path, {
      method: "POST", headers: headers, body: JSON.stringify(body || {})
    }).then(function (res) {
      return parseBody(res).then(function (json) {
        // 未登录/鉴权失败
        if (res.status === 401 || (json && (json.code === 401 || json.code === 1004))) {
          store(KEYS.token, null);
          store(KEYS.admin, null);
          if (typeof Core.onAuthFail === "function") Core.onAuthFail();
          throw buildError(json.message || "登录已过期，请重新登录", 401);
        }
        if (json && typeof json.code === "number" && json.code !== 0 && json.code !== 200) {
          throw buildError(json.message || "请求失败", json.code);
        }
        return json ? json.data : null;
      });
    });
  }

  /**
   * 微信代理接口（包装转发，标准 {code,message,data} 格式）
   * wxApi('login/getLoginQrCode', {appId:''}) → data 解包后返回
   */
  function wxApi(path, body, tokenOverride) {
    var payload = {};
    for (var k in (body || {})) payload[k] = body[k];
    // 自动注入 projectId（后端用于查询项目级 wx_token）
    if (!payload.projectId) {
      var proj = store(KEYS.project);
      if (proj && proj.projectId) payload.projectId = proj.projectId;
    }
    var headers = { "Content-Type": "application/json" };
    var token = store(KEYS.token);
    if (token) headers["Authorization"] = "Bearer " + token;
    return fetch(WX_BASE + path, {
      method: "POST", headers: headers, body: JSON.stringify(payload)
    }).then(function (res) {
      return parseBody(res).then(function (json) {
        if (res.status === 401 || (json && (json.code === 401 || json.code === 1004))) {
          store(KEYS.token, null);
          store(KEYS.admin, null);
          if (typeof Core.onAuthFail === "function") Core.onAuthFail();
          throw buildError(json.message || "登录已过期，请重新登录", 401);
        }
        if (json && typeof json.code === "number" && json.code !== 0 && json.code !== 200) {
          throw buildError(json.message || "请求失败", json.code);
        }
        return json ? json.data : null;
      });
    });
  }

  /** 上传文件（multipart）→ {path,url,name,size} */
  function upload(file, onProgress) {
    var fd = new FormData();
    fd.append("file", file);
    var token = store(KEYS.token);
    return fetch(UPLOAD_URL, {
      method: "POST",
      headers: token ? { "Authorization": "Bearer " + token } : {},
      body: fd
    }).then(function (res) {
      return parseBody(res).then(function (json) {
        if (json && typeof json.code === "number" && json.code !== 0 && json.code !== 200) {
          throw buildError(json.message || "上传失败", json.code);
        }
        return json ? json.data : null;
      });
    });
  }

  /* ---------------- 工具函数 ---------------- */
  function fmtTime(t, withSec) {
    if (!t) return "-";
    var d = new Date(t);
    if (isNaN(d.getTime())) {
      // Go 时间字符串如 2026-09-22T10:00:00+08:00 兼容
      d = new Date(String(t).replace(/-/g, "/").replace("T", " ").split("+")[0]);
      if (isNaN(d.getTime())) return String(t);
    }
    var p = function (n) { return n < 10 ? "0" + n : "" + n; };
    var s = d.getFullYear() + "-" + p(d.getMonth() + 1) + "-" + p(d.getDate()) + " " + p(d.getHours()) + ":" + p(d.getMinutes());
    if (withSec) s += ":" + p(d.getSeconds());
    return s;
  }

  function nowTime() { return fmtTime(new Date(), true); }

  function fmtSize(b) {
    if (!b && b !== 0) return "-";
    if (b < 1024) return b + " B";
    if (b < 1048576) return (b / 1024).toFixed(1) + " KB";
    return (b / 1048576).toFixed(2) + " MB";
  }

  function debounce(fn, ms) {
    var t;
    return function () {
      var args = arguments, self = this;
      clearTimeout(t);
      t = setTimeout(function () { fn.apply(self, args); }, ms || 300);
    };
  }

  function copyText(text) {
    if (navigator.clipboard && navigator.clipboard.writeText) {
      return navigator.clipboard.writeText(text).then(function () { toast("已复制到剪贴板", "ok"); });
    }
    var ta = document.createElement("textarea");
    ta.value = text;
    document.body.appendChild(ta);
    ta.select();
    document.execCommand("copy");
    ta.remove();
    toast("已复制到剪贴板", "ok");
    return Promise.resolve();
  }

  function qs(name) {
    var m = new URLSearchParams(location.search);
    return m.get(name);
  }

  /** JSON 美化输出（解析失败返回原文） */
  function prettyJson(v) {
    try {
      if (typeof v === "string") return JSON.stringify(JSON.parse(v), null, 2);
      return JSON.stringify(v, null, 2);
    } catch (e) { return typeof v === "string" ? v : JSON.stringify(v); }
  }

  /** 安全解析 JSON 字符串（失败抛出带说明错误） */
  function parseJsonField(text, label) {
    if (!text || !String(text).trim()) return null;
    try { return JSON.parse(text); }
    catch (e) { throw buildError((label || "JSON") + " 格式错误：" + e.message); }
  }

  /** 首字符头像（中文取首字） */
  function initial(name) {
    if (!name) return "?";
    return String(name).trim().charAt(0).toUpperCase();
  }

  function logout() {
    store(KEYS.token, null);
    store(KEYS.admin, null);
    location.reload();
  }

  /* ---------------- 多气泡工具 ---------------- */
  // splitBubbles 将文本按换行拆分为多条消息（模拟真人连发多条短消息）
  function splitBubbles(text) {
    if (!text) return [];
    return String(text).split(/\r?\n+/).map(function (s) { return s.trim(); }).filter(function (s) { return s.length > 0; });
  }

  // sleep 异步等待（发送节奏控制）
  function sleep(ms) {
    return new Promise(function (resolve) { setTimeout(resolve, ms); });
  }

  /* ---------------- 导出 ---------------- */
  var Core = {
    ADMIN_BASE: ADMIN_BASE,
    WX_BASE: WX_BASE,
    KEYS: KEYS,
    store: store,
    el: el,
    esc: esc,
    toast: toast,
    loading: loading,
    modal: modal,
    confirm: confirm,
    api: api,
    wxApi: wxApi,
    upload: upload,
    fmtTime: fmtTime,
    nowTime: nowTime,
    fmtSize: fmtSize,
    debounce: debounce,
    splitBubbles: splitBubbles,
    sleep: sleep,
    copyText: copyText,
    qs: qs,
    prettyJson: prettyJson,
    parseJsonField: parseJsonField,
    initial: initial,
    logout: logout,
    onAuthFail: null
  };
  global.Core = Core;
})(window);