const TRACE = {
  "id": "customer-callback-draft",
  "name": "客户回访工单登记",
  "start_url": "http://127.0.0.1:4187/customer-callback.html",
  "expected_domain": "127.0.0.1",
  "default_mode": "execute",
  "actions": [
    {
      "type": "assertText",
      "text": "客户回访工单登记",
      "label": "确认进入客户回访工单页面"
    },
    {
      "type": "select",
      "selector": "[data-trace=\"callback-result\"]",
      "value": "satisfied",
      "label": "选择回访结果"
    },
    {
      "type": "fill",
      "selector": "[data-trace=\"callback-remark\"]",
      "value": "已电话回访客户，现场供电恢复正常，客户确认满意。",
      "label": "填写回访备注"
    },
    {
      "type": "click",
      "selector": "[data-action=\"save-draft\"]",
      "label": "点击保存草稿",
      "risk": "write"
    }
  ]
};
const input =
  (typeof args === "object" && args) ||
  (typeof tool_args === "object" && tool_args) ||
  (typeof sgclaw_args === "object" && sgclaw_args) ||
  {};

function normalizeMode(value) {
  const raw = String(value || TRACE.default_mode || "dry-run").trim().toLowerCase();
  return raw === "execute" ? "execute" : "dry-run";
}

function normalizeType(value) {
  return String(value || "").replace(/[\s_-]+/g, "").toLowerCase();
}

function cleanText(value) {
  return String(value || "").replace(/\s+/g, " ").trim();
}

function selectorList(action) {
  const selectors = [];
  if (action.selector) {
    selectors.push(action.selector);
  }
  if (Array.isArray(action.selectors)) {
    for (const selector of action.selectors) {
      if (selector) {
        selectors.push(selector);
      }
    }
  }
  return selectors;
}

function findByXPath(xpath) {
  try {
    return document.evaluate(xpath, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
  } catch (_) {
    return null;
  }
}

function findByText(text) {
  const needle = cleanText(text);
  if (!needle) {
    return null;
  }
  const candidates = Array.from(document.querySelectorAll("button,a,input,textarea,select,[role='button'],[role='link'],label"));
  return candidates.find((node) => cleanText(node.innerText || node.value || node.getAttribute("aria-label") || node.textContent).includes(needle)) || null;
}

function findElement(action) {
  for (const rawSelector of selectorList(action)) {
    const selector = String(rawSelector).trim();
    if (!selector) {
      continue;
    }
    if (selector.startsWith("xpath=")) {
      const node = findByXPath(selector.slice("xpath=".length));
      if (node) {
        return node;
      }
      continue;
    }
    if (selector.startsWith("//") || selector.startsWith("(//")) {
      const node = findByXPath(selector);
      if (node) {
        return node;
      }
      continue;
    }
    try {
      const node = document.querySelector(selector);
      if (node) {
        return node;
      }
    } catch (_) {
      continue;
    }
  }
  return findByText(action.text || action.label);
}

function describeElement(node) {
  if (!node) {
    return null;
  }
  return {
    tag: String(node.tagName || "").toLowerCase(),
    id: node.id || "",
    name: node.getAttribute ? node.getAttribute("name") || "" : "",
    text: cleanText(node.innerText || node.value || node.textContent).slice(0, 120),
  };
}

function dispatchFieldEvents(node) {
  node.dispatchEvent(new Event("input", { bubbles: true }));
  node.dispatchEvent(new Event("change", { bubbles: true }));
}

function runAction(action, index, shouldExecute) {
  const type = normalizeType(action.type);
  const result = {
    index,
    type: action.type,
    label: action.label || "",
    mode: shouldExecute ? "execute" : "dry-run",
    ok: true,
  };

  if (type === "asserttext" || type === "waitfortext") {
    const needle = cleanText(action.text || action.value);
    const haystack = cleanText(document.body ? document.body.innerText : document.documentElement.textContent);
    result.ok = needle ? haystack.includes(needle) : false;
    result.expected_text = needle;
    return result;
  }

  if (type === "extracttext") {
    const target = findElement(action) || document.body || document.documentElement;
    result.text = cleanText(target.innerText || target.textContent).slice(0, Number(action.max_chars || 2000));
    result.element = describeElement(target);
    return result;
  }

  const element = findElement(action);
  result.element = describeElement(element);
  if (!element) {
    result.ok = false;
    result.error = "target element not found";
    return result;
  }

  if (type === "click" || type === "submit") {
    if (shouldExecute) {
      element.scrollIntoView({ block: "center", inline: "center" });
      if (typeof element.focus === "function") {
        element.focus();
      }
      if (type === "submit" && element.form) {
        element.form.requestSubmit ? element.form.requestSubmit() : element.form.submit();
      } else {
        element.click();
      }
    }
    return result;
  }

  if (type === "fill" || type === "input" || type === "type") {
    result.value = action.value;
    if (shouldExecute) {
      element.focus && element.focus();
      element.value = String(action.value);
      dispatchFieldEvents(element);
    }
    return result;
  }

  if (type === "select") {
    result.value = action.value;
    if (shouldExecute) {
      element.value = String(action.value);
      dispatchFieldEvents(element);
    }
    return result;
  }

  if (type === "check" || type === "uncheck") {
    result.checked = type === "check";
    if (shouldExecute) {
      element.checked = type === "check";
      dispatchFieldEvents(element);
    }
    return result;
  }

  result.ok = false;
  result.error = "unsupported action type";
  return result;
}

const mode = normalizeMode(input.mode || input.execution_mode || input.executionMode);
const shouldExecute = mode === "execute";
const actionResults = [];
let ok = true;

for (let index = 0; index < TRACE.actions.length; index += 1) {
  const actionResult = runAction(TRACE.actions[index], index, shouldExecute);
  actionResults.push(actionResult);
  if (!actionResult.ok) {
    ok = false;
    break;
  }
}

return JSON.stringify({
  ok,
  trace_id: TRACE.id,
  trace_name: TRACE.name,
  mode,
  executed: shouldExecute,
  expected_domain: TRACE.expected_domain,
  url: window.location.href,
  title: document.title || "",
  action_count: TRACE.actions.length,
  action_results: actionResults,
  finished_at: new Date().toISOString(),
});