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# GHCS v0.2 · terminal/page-v2.tsx · 修复版 · 直接import xterm

覆盖文件：`~/guanghu-dev/ghcs-mono/frontend/src/app/console/terminal/page.tsx`

**在 VS Code 里全选（⌘+A）旧代码 → 粘贴下面代码 → ⌘+S**

```tsx
"use client";

import { useEffect, useRef, useState, useCallback } from "react";
import { Terminal } from "@xterm/xterm";
import { FitAddon } from "@xterm/addon-fit";
import "@xterm/xterm/css/xterm.css";
import {
  CommandLineIcon,
  ComputerDesktopIcon,
  ArrowPathIcon,
  SignalIcon,
  SignalSlashIcon,
} from "@heroicons/react/24/outline";

type ServerInfo = {
  key: string;
  name: string;
  host: string;
};

export default function TerminalPage() {
  const termRef = useRef<HTMLDivElement>(null);
  const term = useRef<Terminal | null>(null);
  const fitAddon = useRef<FitAddon | null>(null);
  const wsRef = useRef<WebSocket | null>(null);

  const [servers, setServers] = useState<ServerInfo[]>([]);
  const [selectedServer, setSelectedServer] = useState<string>("");
  const [connected, setConnected] = useState(false);
  const [connecting, setConnecting] = useState(false);
  const [error, setError] = useState("");
  const [termReady, setTermReady] = useState(false);

  const API_BASE = process.env.NEXT_PUBLIC_CONSOLE_API || "";

  // 加载服务器列表
  useEffect(() => {
    fetch(`${API_BASE}/ws/terminal/servers`)
      .then((r) => r.json())
      .then((data) => {
        setServers(data.servers || []);
        if (data.servers?.length > 0 && !selectedServer) {
          setSelectedServer(data.servers[0].key);
        }
      })
      .catch(() => setError("无法加载服务器列表"));
  }, [API_BASE]);

  // 初始化终端（页面加载时）
  useEffect(() => {
    if (!termRef.current) return;

    const t = new Terminal({
      cursorBlink: true,
      cursorStyle: "bar",
      fontSize: 14,
      fontFamily: '"JetBrains Mono", "Fira Code", Menlo, Monaco, monospace',
      theme: {
        background: "#0d1117",
        foreground: "#c9d1d9",
        cursor: "#58a6ff",
        selectionBackground: "#264f78",
        black: "#484f58",
        red: "#ff7b72",
        green: "#3fb950",
        yellow: "#d29922",
        blue: "#58a6ff",
        magenta: "#bc8cff",
        cyan: "#39c5cf",
        white: "#b1bac4",
        brightBlack: "#6e7681",
        brightRed: "#ffa198",
        brightGreen: "#56d364",
        brightYellow: "#e3b341",
        brightBlue: "#79c0ff",
        brightMagenta: "#d2a8ff",
        brightCyan: "#56d4dd",
        brightWhite: "#f0f6fc",
      },
    });

    const fit = new FitAddon();
    t.loadAddon(fit);
    t.open(termRef.current);
    fit.fit();

    term.current = t;
    fitAddon.current = fit;
    setTermReady(true);

    return () => {
      t.dispose();
    };
  }, []);

  // 连接
  const connect = useCallback(() => {
    if (!selectedServer || !term.current) return;

    setConnecting(true);
    setError("");

    // 先清理旧连接
    if (wsRef.current) {
      wsRef.current.close();
      wsRef.current = null;
    }

    // 清屏
    term.current.clear();
    term.current.writeln("\x1b[32m正在连接到 " + selectedServer + "...\x1b[0m");

    const wsProtocol = window.location.protocol === "https:" ? "wss:" : "ws:";
    const apiHost = API_BASE
      ? API_BASE.replace(/^https?:/, "")
      : `//${window.location.host}`;
    const wsUrl = `${wsProtocol}${apiHost}/ws/terminal/${selectedServer}`;

    const ws = new WebSocket(wsUrl);
    ws.binaryType = "arraybuffer";
    wsRef.current = ws;

    ws.onopen = () => {
      setConnected(true);
      setConnecting(false);
      term.current?.focus();
    };

    ws.onmessage = (event) => {
      if (event.data instanceof ArrayBuffer) {
        term.current?.write(new Uint8Array(event.data));
      } else {
        try {
          const msg = JSON.parse(event.data);
          if (msg.type === "error") {
            setError(msg.message);
            term.current?.writeln("\r\n\x1b[31m[错误] " + msg.message + "\x1b[0m");
          }
        } catch {
          term.current?.write(event.data);
        }
      }
    };

    ws.onclose = () => {
      setConnected(false);
      term.current?.writeln("\r\n\x1b[33m[连接已断开]\x1b[0m");
    };

    ws.onerror = () => {
      setError("WebSocket 连接失败");
      setConnecting(false);
    };

    // 键盘输入
    term.current.onData((data) => {
      if (ws.readyState === WebSocket.OPEN) {
        ws.send(data);
      }
    });

    // 窗口大小调整
    const observer = new ResizeObserver(() => {
      fitAddon.current?.fit();
      if (term.current && ws.readyState === WebSocket.OPEN) {
        ws.send(JSON.stringify({
          type: "resize",
          cols: term.current.cols,
          rows: term.current.rows,
        }));
      }
    });
    if (termRef.current) observer.observe(termRef.current);
  }, [selectedServer, API_BASE]);

  // 断开
  const disconnect = useCallback(() => {
    if (wsRef.current) {
      wsRef.current.close();
      wsRef.current = null;
    }
    setConnected(false);
    term.current?.writeln("\r\n\x1b[33m已断开连接\x1b[0m");
  }, []);

  return (
    <div className="space-y-4 h-[calc(100vh-8rem)] flex flex-col">
      <div className="flex items-center justify-between flex-shrink-0">
        <h1 className="text-2xl font-bold text-gray-100 flex items-center gap-3">
          <CommandLineIcon className="w-7 h-7 text-green-400" />
          SSH Web 终端
        </h1>
      </div>

      <div className="flex items-center gap-4 flex-shrink-0">
        <div className="flex items-center gap-2">
          <ComputerDesktopIcon className="w-5 h-5 text-gray-400" />
          <select
            value={selectedServer}
            onChange={(e) => setSelectedServer(e.target.value)}
            disabled={connected}
            className="bg-gray-700 border border-gray-600 rounded-lg px-3 py-2 text-gray-100 text-sm focus:outline-none focus:border-green-500 disabled:opacity-50"
          >
            {servers.map((s) => (
              <option key={s.key} value={s.key}>
                {s.name} ({s.host})
              </option>
            ))}
          </select>
        </div>

        <div className="flex items-center gap-2">
          {connected ? (
            <>
              <span className="flex items-center gap-1.5 text-green-400 text-sm">
                <SignalIcon className="w-4 h-4" />
                已连接
              </span>
              <button
                onClick={disconnect}
                className="px-3 py-1.5 bg-red-600/20 hover:bg-red-600/30 text-red-400 border border-red-600/30 rounded-lg text-sm transition flex items-center gap-1.5"
              >
                <SignalSlashIcon className="w-4 h-4" />
                断开
              </button>
            </>
          ) : (
            <>
              <span className="text-gray-500 text-sm flex items-center gap-1.5">
                <SignalSlashIcon className="w-4 h-4" />
                未连接
              </span>
              <button
                onClick={connect}
                disabled={connecting || !termReady}
                className="px-4 py-1.5 bg-green-600 hover:bg-green-500 text-white rounded-lg text-sm transition flex items-center gap-1.5 disabled:opacity-50"
              >
                {connecting ? (
                  <>
                    <ArrowPathIcon className="w-4 h-4 animate-spin" />
                    连接中...
                  </>
                ) : (
                  <>
                    <SignalIcon className="w-4 h-4" />
                    连接
                  </>
                )}
              </button>
            </>
          )}
        </div>
      </div>

      {error && (
        <div className="p-3 bg-red-900/30 border border-red-700/50 rounded-lg text-red-300 text-sm flex-shrink-0">
          {error}
        </div>
      )}

      <div className="flex-1 bg-[#0d1117] rounded-xl border border-gray-700/50 overflow-hidden min-h-0">
        <div ref={termRef} className="w-full h-full" />
      </div>

      <div className="text-xs text-gray-600 flex-shrink-0">
        💡 提示：点一下黑色终端区域，然后就可以输入命令了。这是一个真实的 SSH 会话。
      </div>
    </div>
  );
}
```

---

## 🔑 与上一版的区别

- 用 `import { Terminal } from "@xterm/xterm"` 直接导入，不再动态加载
- 用 `import "@xterm/xterm/css/xterm.css"` 直接导入 CSS，不再加载 CDN
- 终端在页面一打开就初始化好，不需要等"加载中"
- 去掉了 `display: none/block` 切换，更简单稳定
- 去掉了 `(window as any)` 全局变量存储

---

## 部署

1. VS Code 打开 `page.tsx`（terminal 文件夹下的）
2. ⌘+A 全选 → 粘贴上面代码 → ⌘+S
3. 浏览器刷新 `http://localhost:3000/console/terminal`
4. 点连接 → 终端变黑 → 点一下黑框 → 敲 `whoami`