#include "desktop_service.h"

namespace vdi {

void DesktopService::login(const QString& username, const QString& password, AuthCallback callback) {
    // 本地演示认证：账号与密码非空即通过。
    // 正式版本替换为 /api/v1/terminal/session/login（SN+用户身份校验）。
    AuthResult result;
    if (username.trimmed().isEmpty() || password.isEmpty()) {
        result.ok = false;
        result.message = QStringLiteral("请输入用户名和密码");
    } else {
        result.ok = true;
        result.displayName = username.trimmed();
        currentUser_ = username.trimmed();
    }
    if (callback) {
        callback(result);
    }
}

void DesktopService::listDesktops(DesktopListCallback callback) {
    // 本地演示数据：Windows 可用（Moonlight），Ubuntu/麒麟尚未分配连接信息。
    // 正式版本替换为 /api/v1/terminal/session/desktops（按用户绑定返回）。
    std::vector<DesktopInfo> desktops;

    DesktopInfo windows;
    windows.id = QStringLiteral("desk-win10-01");
    windows.name = QStringLiteral("Windows 10");
    windows.os = QStringLiteral("Windows 10 22H2 专业版");
    windows.protocol = Protocol::kMoonlight;
    windows.state = DesktopState::kAvailable;
    windows.endpoint = QStringLiteral("192.168.1.70");
    windows.app = QStringLiteral("Desktop");
    desktops.push_back(windows);

    DesktopInfo ubuntu;
    ubuntu.id = QStringLiteral("desk-ubuntu-01");
    ubuntu.name = QStringLiteral("Ubuntu");
    ubuntu.os = QStringLiteral("Ubuntu 桌面");
    ubuntu.protocol = Protocol::kRdp;
    ubuntu.state = DesktopState::kUnassigned;
    desktops.push_back(ubuntu);

    DesktopInfo kylin;
    kylin.id = QStringLiteral("desk-kylin-01");
    kylin.name = QStringLiteral("麒麟");
    kylin.os = QStringLiteral("银河麒麟桌面");
    kylin.protocol = Protocol::kRdp;
    kylin.state = DesktopState::kUnassigned;
    desktops.push_back(kylin);

    if (callback) {
        callback(std::move(desktops), QString());
    }
}

void DesktopService::createTicket(const QString& desktopId, TicketCallback callback) {
    // 本地演示票据：直接由桌面列表数据构造。
    // 正式版本替换为 /api/v1/terminal/session/connect-ticket（短期一次性票据）。
    ConnectionTicket ticket;
    ticket.desktopId = desktopId;

    std::vector<DesktopInfo> desktops;
    QString error;
    listDesktops([&desktops, &error](std::vector<DesktopInfo> list, const QString& err) {
        desktops = std::move(list);
        error = err;
    });

    for (const DesktopInfo& d : desktops) {
        if (d.id == desktopId) {
            if (d.state != DesktopState::kAvailable) {
                error = QStringLiteral("桌面 %1 尚未分配连接信息").arg(d.name);
                break;
            }
            ticket.protocol = d.protocol;
            ticket.endpoint = d.endpoint;
            ticket.app = d.app;
            ticket.width = d.width;
            ticket.height = d.height;
            ticket.fps = d.fps;
            error.clear();
            break;
        }
    }

    if (callback) {
        callback(ticket, error);
    }
}

void DesktopService::logout() {
    currentUser_.clear();
}

}  // namespace vdi