#include "stdafx.h"
#include "McpSettingsDlg.h"
#include "LangManager.h"     // _TR / MessageBoxL
#include "McpServer.h"       // GenerateRandomToken
#include "2015Remote.h"      // THIS_CFG (GetThisCfg)
#include <atlconv.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

namespace {

// 构造一个无控件的 DLGTEMPLATE：cdit=0，控件由 OnInitDialog 动态创建。
// （与 ZstaPickerDlg.cpp 内同名函数一致）
void BuildDialogTemplate(std::vector<BYTE>& out, LPCWSTR caption, short cx, short cy)
{
    out.clear();
    auto append = [&](const void* p, size_t n) {
        const BYTE* b = (const BYTE*)p;
        out.insert(out.end(), b, b + n);
    };
    auto appendW = [&](WORD v) {
        out.push_back((BYTE)(v & 0xFF));
        out.push_back((BYTE)((v >> 8) & 0xFF));
    };
    auto appendWStr = [&](LPCWSTR s) {
        size_t n = wcslen(s);
        append(s, (n + 1) * sizeof(WCHAR));
    };

    DLGTEMPLATE dt = { 0 };
    dt.style = DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER |
               WS_POPUP | WS_CAPTION | WS_SYSMENU;
    dt.dwExtendedStyle = 0;
    dt.cdit = 0;
    dt.x = 0; dt.y = 0;
    dt.cx = cx; dt.cy = cy;
    append(&dt, sizeof(dt));
    appendW(0);                          // no menu
    appendW(0);                          // default dialog class
    appendWStr(caption);                 // caption
    appendW(8);                          // font point size
    appendWStr(L"MS Shell Dlg");         // typeface

    while (out.size() % 4) out.push_back(0); // DWORD align
}

// 把白名单文本规范化为「逗号分隔、逐项去首尾空白、去空项」的存储格式。
// 换行视作分隔符（与逗号等价），便于多行输入。
std::string NormalizeWhitelist(const std::string& raw)
{
    std::string norm;
    norm.reserve(raw.size());
    for (char ch : raw)
        norm += (ch == '\r' || ch == '\n') ? ',' : ch;

    std::vector<std::string> items;
    size_t start = 0;
    while (start < norm.size()) {
        size_t comma = norm.find(',', start);
        std::string item = norm.substr(start, comma == std::string::npos ? std::string::npos : comma - start);
        size_t b = item.find_first_not_of(" \t\r\n");
        if (b != std::string::npos) {
            size_t e = item.find_last_not_of(" \t\r\n");
            item = item.substr(b, e - b + 1);
        } else {
            item.clear();
        }
        if (!item.empty()) items.push_back(item);
        if (comma == std::string::npos) break;
        start = comma + 1;
    }

    std::string out;
    for (size_t i = 0; i < items.size(); ++i) {
        if (i) out += ",";
        out += items[i];
    }
    return out;
}

// 存储格式（逗号分隔）→ 多行展示（每行一条）。
std::string WhitelistForDisplay(const std::string& stored)
{
    std::string disp;
    disp.reserve(stored.size());
    for (char ch : stored) {
        if (ch == ',') disp += "\r\n";
        else disp += ch;
    }
    return disp;
}

} // namespace

BEGIN_MESSAGE_MAP(CMcpSettingsDlg, CDialog)
END_MESSAGE_MAP()

CMcpSettingsDlg::CMcpSettingsDlg(CWnd* parent)
    : CDialog((LPCTSTR)NULL, parent)
{
}

INT_PTR CMcpSettingsDlg::DoModal()
{
    USES_CONVERSION;
    CString title = _TR("MCP设置");
    BuildDialogTemplate(m_Template, T2CW(title), 320, 360);
    InitModalIndirect((LPCDLGTEMPLATE)m_Template.data());
    return CDialog::DoModal();
}

BOOL CMcpSettingsDlg::OnInitDialog()
{
    CDialog::OnInitDialog();

    CRect cli;
    GetClientRect(&cli);

    // 占位 rect，真正布局在 LayoutControls 里
    CRect r0(0, 0, 10, 10);

    m_btnEnable.Create(_TR("启用 MCP"),
                       WS_CHILD | WS_VISIBLE | WS_TABSTOP | BS_AUTOCHECKBOX,
                       r0, this, IDC_MCP_ENABLE);
    m_lblPort.Create(_TR("端口"), WS_CHILD | WS_VISIBLE, r0, this, (UINT)-1);
    m_editPort.Create(WS_CHILD | WS_VISIBLE | WS_BORDER | WS_TABSTOP | ES_AUTOHSCROLL,
                      r0, this, IDC_MCP_PORT);
    m_lblBind.Create(_TR("绑定地址"), WS_CHILD | WS_VISIBLE, r0, this, (UINT)-1);
    m_editBind.Create(WS_CHILD | WS_VISIBLE | WS_BORDER | WS_TABSTOP | ES_AUTOHSCROLL,
                      r0, this, IDC_MCP_BIND);
    m_lblToken.Create(_TR("Token"), WS_CHILD | WS_VISIBLE, r0, this, (UINT)-1);
    m_editToken.Create(WS_CHILD | WS_VISIBLE | WS_BORDER | WS_TABSTOP | ES_AUTOHSCROLL,
                       r0, this, IDC_MCP_TOKEN);
    m_btnReadonly.Create(_TR("只读模式（禁命令执行）"),
                         WS_CHILD | WS_VISIBLE | WS_TABSTOP | BS_AUTOCHECKBOX,
                         r0, this, IDC_MCP_READONLY);
    m_btnTerminal.Create(_TR("启用持久终端（全命令，无白名单）"),
                         WS_CHILD | WS_VISIBLE | WS_TABSTOP | BS_AUTOCHECKBOX,
                         r0, this, IDC_MCP_TERMINAL);
    m_lblWhitelist.Create(_TR("命令白名单"), WS_CHILD | WS_VISIBLE, r0, this, (UINT)-1);
    m_editWhitelist.Create(WS_CHILD | WS_VISIBLE | WS_BORDER | WS_TABSTOP |
                           ES_MULTILINE | ES_AUTOVSCROLL | ES_WANTRETURN | WS_VSCROLL,
                           r0, this, IDC_MCP_WHITELIST);
    m_btnOK.Create(_TR("确定"), WS_CHILD | WS_VISIBLE | WS_TABSTOP | BS_DEFPUSHBUTTON,
                   r0, this, IDOK);
    m_btnCancel.Create(_TR("取消"), WS_CHILD | WS_VISIBLE | WS_TABSTOP | BS_PUSHBUTTON,
                       r0, this, IDCANCEL);

    // 子控件继承对话框字体 (DS_SETFONT)
    HFONT hFont = (HFONT)::SendMessage(GetSafeHwnd(), WM_GETFONT, 0, 0);
    if (hFont) {
        m_btnEnable.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_lblPort.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_editPort.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_lblBind.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_editBind.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_lblToken.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_editToken.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_btnReadonly.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_btnTerminal.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_lblWhitelist.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_editWhitelist.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_btnOK.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
        m_btnCancel.SendMessage(WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
    }

    // 回填配置（首次打开且 token 为空时预填随机值，随保存持久化）
    int enabled = THIS_CFG.GetInt("settings", "McpEnabled", 0);
    int port = THIS_CFG.GetInt("settings", "McpPort", 6544);
    std::string bind = THIS_CFG.GetStr("settings", "McpBind", "127.0.0.1");
    std::string tok = THIS_CFG.GetStr("settings", "McpToken", "");
    if (tok.empty()) tok = GenerateRandomToken();
    int readonly = THIS_CFG.GetInt("settings", "McpReadonly", 1);
    int terminal = THIS_CFG.GetInt("settings", "McpTerminal", 0);
    std::string whitelist = THIS_CFG.GetStr("settings", "McpCmdWhitelist", "");

    m_btnEnable.SetCheck(enabled ? BST_CHECKED : BST_UNCHECKED);
    m_editPort.SetWindowText(CString(std::to_string(port).c_str()));
    m_editBind.SetWindowText(CString(bind.c_str()));
    m_editToken.SetWindowText(CString(tok.c_str()));
    m_btnReadonly.SetCheck(readonly ? BST_CHECKED : BST_UNCHECKED);
    m_btnTerminal.SetCheck(terminal ? BST_CHECKED : BST_UNCHECKED);
    // 白名单存储为逗号分隔，展示为每行一条。
    m_editWhitelist.SetWindowText(CString(WhitelistForDisplay(whitelist).c_str()));

    LayoutControls(cli.Width(), cli.Height());
    return TRUE;
}

void CMcpSettingsDlg::OnOK()
{
    CString sPort, sBind, sToken, sWhitelist;
    m_editPort.GetWindowText(sPort);
    m_editBind.GetWindowText(sBind);
    m_editToken.GetWindowText(sToken);
    m_editWhitelist.GetWindowText(sWhitelist);
    bool enabled = (m_btnEnable.GetCheck() == BST_CHECKED);
    bool readonly = (m_btnReadonly.GetCheck() == BST_CHECKED);
    bool terminal = (m_btnTerminal.GetCheck() == BST_CHECKED);

    // 端口校验：1-65535
    int port = atoi(CT2A(sPort));
    if (port < 1 || port > 65535) {
        MessageBoxL(_TR("端口需为 1-65535 的数字"), _TR("提示"), MB_ICONWARNING);
        return;
    }

    std::string bind = CT2A(sBind);
    if (bind.empty()) bind = "127.0.0.1";

    std::string token = CT2A(sToken);
    if (enabled && token.empty()) {
        MessageBoxL(_TR("Token 不能为空"), _TR("提示"), MB_ICONWARNING);
        return;
    }

    // 落盘
    THIS_CFG.SetInt("settings", "McpEnabled", enabled ? 1 : 0);
    THIS_CFG.SetInt("settings", "McpPort", port);
    THIS_CFG.SetStr("settings", "McpBind", bind);
    THIS_CFG.SetStr("settings", "McpToken", token);
    THIS_CFG.SetInt("settings", "McpReadonly", readonly ? 1 : 0);
    THIS_CFG.SetInt("settings", "McpTerminal", terminal ? 1 : 0);
    std::string whitelist = CT2A(sWhitelist);
    whitelist = NormalizeWhitelist(whitelist);
    THIS_CFG.SetStr("settings", "McpCmdWhitelist", whitelist);

    // 拆成两段可翻译的单行键，中间用 \r\n 连接（多行键无法在 INI 中表示）
    MessageBox(_TR("MCP 设置已保存。") + _T("\r\n") +
               _TR("启用/端口/绑定地址/Token/只读/白名单/持久终端的改动需重启程序生效。") + _T("\r\n") +
               _TR("持久终端仅在只读模式关闭时生效。"),
               _TR("提示"), MB_ICONINFORMATION);

    CDialog::OnOK();
}

void CMcpSettingsDlg::LayoutControls(int cx, int cy)
{
    const int margin = 14;
    const int labelW = 72;
    const int rowH = 24;
    const int gap = 10;
    const int btnW = 88;
    const int btnH = 26;

    int y = margin;
    m_btnEnable.MoveWindow(margin, y, cx - margin * 2, 22);
    y += 30;

    m_lblPort.MoveWindow(margin, y, labelW, rowH);
    m_editPort.MoveWindow(margin + labelW, y - 2, 100, rowH);
    y += rowH + gap;

    m_lblBind.MoveWindow(margin, y, labelW, rowH);
    m_editBind.MoveWindow(margin + labelW, y - 2, cx - margin * 2 - labelW, rowH);
    y += rowH + gap;

    m_lblToken.MoveWindow(margin, y, labelW, rowH);
    m_editToken.MoveWindow(margin + labelW, y - 2, cx - margin * 2 - labelW, rowH);
    y += rowH + gap;

    m_btnReadonly.MoveWindow(margin, y, cx - margin * 2, 22);
    y += 30;

    m_btnTerminal.MoveWindow(margin, y, cx - margin * 2, 22);
    y += 30;

    const int whitelistH = 90;
    m_lblWhitelist.MoveWindow(margin, y, labelW, rowH);
    m_editWhitelist.MoveWindow(margin + labelW, y - 2, cx - margin * 2 - labelW, whitelistH);
    y += whitelistH + gap;

    int bottomY = cy - margin - btnH;
    m_btnCancel.MoveWindow(cx - margin - btnW, bottomY, btnW, btnH);
    m_btnOK.MoveWindow(cx - margin - btnW * 2 - gap, bottomY, btnW, btnH);
}