(function (global) {

  var delegated = false;



  function queryInScope(scope, id) {

    if (scope && scope.querySelector) return scope.querySelector("#" + id);

    return document.getElementById(id);

  }



  function categoriesData() {

    return global.ORDER_ENTRY_MODEL_CATEGORIES || [];

  }



  function codeToCategoryMap() {

    return global.ORDER_ENTRY_MODEL_CODE_TO_CATEGORY || {};

  }



  function tradeStyleForCode(code, modelSel) {

    if (modelSel && code) {

      var opt = modelSel.querySelector('option[value="' + code.replace(/"/g, '\\"') + '"]');

      if (opt) {

        var ds = opt.getAttribute("data-trade-style");

        if (ds === "swing" || ds === "trend") return ds;

      }

    }

    var map = global.ORDER_ENTRY_MODEL_TRADE_STYLE || {};

    return map[code] || "trend";

  }



  function findOption(catKey, code) {

    var cats = categoriesData();

    for (var i = 0; i < cats.length; i++) {

      if (cats[i].key !== catKey) continue;

      var opts = cats[i].options || [];

      for (var j = 0; j < opts.length; j++) {

        if (opts[j].code === code) return opts[j];

      }

    }

    return null;

  }



  function filterDomSubOptions(modelSel, catKey, preserveCode) {

    var tagged = modelSel.querySelectorAll("option[data-entry-category]");

    if (!tagged.length) return false;



    var any = false;

    for (var i = 0; i < tagged.length; i++) {

      var opt = tagged[i];

      var show = !!catKey && opt.getAttribute("data-entry-category") === catKey;

      opt.hidden = !show;

      opt.disabled = !show;

      if (show) any = true;

    }



    modelSel.disabled = !any;

    if (!any) {

      modelSel.value = "";

      return true;

    }



    var pick = preserveCode || "";

    if (pick) {

      var picked = modelSel.querySelector('option[value="' + pick.replace(/"/g, '\\"') + '"]:not([disabled])');

      if (picked) {

        modelSel.value = pick;

        return true;

      }

    }



    var visible = [];

    for (var k = 0; k < tagged.length; k++) {

      if (!tagged[k].disabled) visible.push(tagged[k]);

    }

    if (visible.length === 1) modelSel.value = visible[0].value;

    else modelSel.value = "";

    return true;

  }



  function rebuildFromCategories(modelSel, catKey, preserveCode) {

    var cats = categoriesData();

    var cat = null;

    for (var i = 0; i < cats.length; i++) {

      if (cats[i].key === catKey) {

        cat = cats[i];

        break;

      }

    }



    modelSel.innerHTML = "";

    var placeholder = document.createElement("option");

    placeholder.value = "";

    placeholder.textContent = "类型";

    modelSel.appendChild(placeholder);



    if (!cat || !cat.options || !cat.options.length) {

      modelSel.disabled = true;

      modelSel.value = "";

      return;

    }



    modelSel.disabled = false;

    var pick = preserveCode || "";

    for (var k = 0; k < cat.options.length; k++) {

      var o = cat.options[k];

      var opt = document.createElement("option");

      opt.value = o.code;

      opt.textContent = o.label;

      if (o.trade_style) opt.setAttribute("data-trade-style", o.trade_style);

      if (o.help) opt.title = o.help;

      modelSel.appendChild(opt);

    }



    if (pick && findOption(catKey, pick)) {

      modelSel.value = pick;

    } else if (cat.options.length === 1) {

      modelSel.value = cat.options[0].code;

    } else {

      modelSel.value = "";

    }

  }



  function rebuildEntryModelSubSelect(preserveCode, scope) {

    var root = scope && scope.querySelector ? scope : document;

    var catSel = queryInScope(root, "order-entry-category");

    var modelSel = queryInScope(root, "order-entry-model");

    if (!catSel || !modelSel) return;



    var catKey = catSel.value;

    if (filterDomSubOptions(modelSel, catKey, preserveCode)) {

      syncOrderEntryModelTradeStyle(modelSel);

      return;

    }

    rebuildFromCategories(modelSel, catKey, preserveCode);

    syncOrderEntryModelTradeStyle(modelSel);

  }



  function syncOrderEntryModelTradeStyle(modelSel) {

    if (!modelSel) modelSel = document.getElementById("order-entry-model");

    var hidden = document.getElementById("order-trade-style-hidden");

    var hint = document.getElementById("order-trade-style-hint");

    if (!modelSel || !hidden) return;

    var labels = { trend: "趋势单", swing: "波段单" };

    var code = modelSel.value || "";

    var ts = tradeStyleForCode(code, modelSel);

    hidden.value = ts;

    if (hint) hint.textContent = labels[ts] || ts;

  }



  function wireDelegation() {

    if (delegated) return;

    delegated = true;

    document.addEventListener(

      "change",

      function (ev) {

        var t = ev.target;

        if (!t || !t.id) return;

        if (t.id === "order-entry-category") {

          rebuildEntryModelSubSelect("");

          return;

        }

        if (t.id === "order-entry-model") {

          syncOrderEntryModelTradeStyle(t);

        }

      },

      false

    );

  }



  function initOrderEntryModelSelect(root) {

    wireDelegation();

    var scope = root && root.querySelector ? root : document;

    var catSel = queryInScope(scope, "order-entry-category");

    var modelSel = queryInScope(scope, "order-entry-model");

    if (!catSel || !modelSel) return;



    var presetCode = modelSel.getAttribute("data-preset-code") || modelSel.value || "";

    if (presetCode) {

      var catMap = codeToCategoryMap();

      var catKey = catMap[presetCode];

      if (catKey) {

        catSel.value = catKey;

        rebuildEntryModelSubSelect(presetCode, scope);

        return;

      }

    }

    rebuildEntryModelSubSelect("", scope);

  }



  global.paintOrderLeverageHint = function (leverage) {

    var hidden = document.getElementById("order-leverage");

    var hint = document.getElementById("order-leverage-hint");

    if (!hidden && !hint) return;

    var lev = parseInt(leverage, 10);

    if (!Number.isFinite(lev) || lev <= 0) {

      if (hint) hint.textContent = "杠杆 —";

      if (hidden) hidden.value = "";

      return;

    }

    if (hidden) hidden.value = String(lev);

    if (hint) hint.textContent = "杠杆 " + lev + "x";

  };



  global.initOrderEntryModelSelect = initOrderEntryModelSelect;

  global.syncOrderEntryModelTradeStyle = syncOrderEntryModelTradeStyle;

  global.rebuildEntryModelSubSelect = rebuildEntryModelSubSelect;



  wireDelegation();

  if (document.readyState === "loading") {

    document.addEventListener("DOMContentLoaded", function () {

      initOrderEntryModelSelect();

    });

  } else {

    initOrderEntryModelSelect();

  }

})(typeof window !== "undefined" ? window : globalThis);