// import React from 'react';
import {
  Links,
  // LiveReload, // 不再需要，使用Vite时会与内置HMR冲突
  Meta,
  Outlet,
  Scripts,
  ScrollRestoration,
  isRouteErrorResponse,
  useRouteError,
  type MetaFunction,
  useLoaderData
} from "@remix-run/react";
import {
  LoaderFunctionArgs,
  redirect,
  ActionFunctionArgs
} from "@remix-run/node";
import { Layout } from "~/components/layout/Layout";
import { ErrorBoundary as AppErrorBoundary } from "~/components/error/ErrorBoundary";
import { MessageModalProvider } from "~/components/ui/MessageModal";
import { ToastProvider } from "~/components/ui/Toast";
import "remixicon/fonts/remixicon.css";
// 导入样式
import styles from "~/styles/main.css?url";
import messageModalStyles from "~/styles/components/message-modal.css?url";
import toastStyles from "~/styles/components/toast.css?url";
import LoadingBarContainer from "~/components/ui/LoadingBar";
import RouteChangeLoader from "~/components/ui/RouteChangeLoader";
// import { useState, useEffect } from "react";


// 导入认证相关的服务器端功能（仅在服务器端使用）
import { 
  getUserSession, 
  getSession,
  sessionStorage,
  logout,
  type UserRole 
} from "~/api/login/auth.server";

// 定义需要高级权限的路径
export const developerOnlyPaths = [
  '/settings',
  '/config-lists',
  '/document-types',
  '/prompts',
];

// 导出类型供客户端使用
export type { UserRole };



// 添加action处理登录/登出请求
export async function action({ request }: ActionFunctionArgs) {
  const formData = await request.formData();
  const intent = formData.get("intent");

  if (intent === "logout") {
    return logout(request);
  }

  return null;
}

// 添加loader函数进行全局认证检查并传递环境变量给客户端
export async function loader({ request }: LoaderFunctionArgs) {
  // 获取当前路径
  const url = new URL(request.url);
  const pathname = url.pathname;

  // 排除不需要登录验证的路径
  const publicPaths = ['/login', '/favicon.ico', '/callback'];
  const isPublicPath = publicPaths.some(path => pathname.startsWith(path));

  // 获取用户会话（可能包含刷新后的token）
  const { isAuthenticated, userRole, refreshedSession, frontendJWT } = await getUserSession(request);
  // console.log("是否公开路径:", isPublicPath, "是否已认证:", isAuthenticated);

  // 如果访问需要认证的路径但未登录，重定向到登录页
  if (!isPublicPath && !isAuthenticated) {
    console.log("未认证，需要重定向到登录页");
    // 保存请求的URL，以便登录后重定向回来
    const session = await getSession(request);

    // 如果路径是/home，则将重定向目标设置为/
    const redirectTarget = pathname !== "/" ? "/" : pathname;
    // const redirectTarget = pathname === "home" ? "/" : pathname;
    // 保存重定向目标
    session.set("redirectTo", redirectTarget);

    return redirect("/login", {
      headers: {
        "Set-Cookie": await sessionStorage.commitSession(session),
      },
    });
  }

  // 如果已登录且访问登录页，重定向到首页
  if (pathname === "/login" && isAuthenticated) {
    console.log("已认证，重定向到首页");
    return redirect("/");
  }

  // 检查访问权限 - 如果是common用户访问了开发者专属页面，重定向到首页
  if (userRole === 'common' && developerOnlyPaths.some(path => pathname.startsWith(path))) {
    console.log("用户没有访问权限，重定向到首页");
    return redirect("/");
  }

  // 检查5178端口访问控制
  
  // 由于应用直接运行在5178端口，我们需要从环境变量或运行时获取端口
  const currentPort = process.env.PORT || process.env.API_PORT_CONFIG;
  // console.log("currentPort-----------",currentPort)
  
  // 获取运行时端口（从请求URL或环境变量）
  const runtimePort = url.port || currentPort;
  // console.log("runtimePort-----------",runtimePort)

  const isPort51708 = currentPort === '5178' || runtimePort === '5178';
  
  if (isPort51708 && !isPublicPath) {
    // 51708端口只允许访问交叉评查相关路径和首页
    const allowedPaths = ['/', '/cross-checking','/chat-with-llm'];
    const isAllowedPath = allowedPaths.some(path => pathname === path) || 
                         pathname.startsWith('/cross-checking/') ||
                         pathname.startsWith('/chat-with-llm/');
    
    if (!isAllowedPath) {
      // console.log("5178端口访问受限，重定向到交叉评查页面");
      return redirect("/cross-checking");
    }
  }

  // 如果token被刷新了，需要在响应中设置更新后的cookie
  const responseHeaders: Record<string, string> = {};
  if (refreshedSession) {
    responseHeaders["Set-Cookie"] = await sessionStorage.commitSession(refreshedSession);
  }

  // 向组件传递认证状态、当前路径
  // 注意：不再传递 Dify 相关环境变量，客户端改为调用 Remix API routes
  return Response.json({
    isAuthenticated,
    userRole,
    pathname,
    frontendJWT,
    ENV: {
      // 移除 NEXT_PUBLIC_API_URL, NEXT_PUBLIC_APP_ID, NEXT_PUBLIC_APP_KEY
      // 客户端不再需要直接调用 Dify API
    },
  }, {
    headers: responseHeaders
  });
}


export const meta: MetaFunction = () => {
  return [
    { charSet: "utf-8" },
    { name: "viewport", content: "width=device-width,initial-scale=1" },
    { title: "中国烟草AI合同及卷宗审核系统" },
    { name: "description", content: "专业的AI合同及卷宗评查系统，提供智能审核、风险评估和规范化建议" },
    { name: "robots", content: "noindex,nofollow" } // 内部系统，防止被搜索引擎索引
  ];
};

// 使用links函数为应用加载CSS和其他资源
export function links() {
  return [
    { rel: "stylesheet", href: styles },
    { rel: "stylesheet", href: messageModalStyles },
    { rel: "stylesheet", href: toastStyles },
    // 添加 Antd 样式
    // { rel: "stylesheet", href: "https://cdn.jsdelivr.net/npm/antd@5/dist/reset.css" },
    { rel: "icon", type: "image/svg+xml", href: "/logo.svg" },
    // { rel: "preconnect", href: "https://fonts.googleapis.com" },
    // { rel: "preconnect", href: "https://fonts.gstatic.com", crossOrigin: "anonymous" },
    // { rel: "stylesheet", href: "https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap" }
  ];
}

export default function App() {
  const { userRole, ENV, frontendJWT } = useLoaderData<typeof loader>();


  return (
    <html lang="zh-CN">
      <head>
        <meta charSet="utf-8" />
        <meta name="viewport" content="width=device-width,initial-scale=1" />
        <style dangerouslySetInnerHTML={{
          __html: `
          :root {
            --color-primary: #00684a;
            --color-primary-hover: #005a3f;
            --color-primary-light: rgba(0, 104, 74, 0.1);
            --primary-color: #00684a;
            
            /* 成功、警告、错误颜色 */
            --color-success: #52c41a;
            --color-warning: #faad14;
            --color-error: #f5222d;
          }
        ` }} />
        <Meta />
        <Links />
        <script
          dangerouslySetInnerHTML={{
            __html: `window.__ENV = ${JSON.stringify(ENV)}`,
          }}
        />
      </head>
      <body className="font-sans">
        <MessageModalProvider>
          <ToastProvider>
            <Layout userRole={userRole} frontendJWT={frontendJWT}>
              <Outlet />
            </Layout>
            <RouteChangeLoader />
          </ToastProvider>
        </MessageModalProvider>
        <ScrollRestoration />
        <Scripts />
        <LoadingBarContainer />
      </body>
    </html>
  );
}

export function ErrorBoundary() {
  const error = useRouteError();

  // 为错误页面设置标题和描述
  let title = "发生错误";
  let message = "发生了一个未知错误，请稍后重试";

  if (isRouteErrorResponse(error)) {
    title = `错误 ${error.status}`;
    message = error.data?.message || "发生了一个错误，请稍后重试";
  } else {
    title = "意外错误";
    message = "服务器发生了意外错误，请稍后重试";
  }

  return (
    <html lang="zh-CN">
      <head>
        <meta charSet="utf-8" />
        <meta name="viewport" content="width=device-width,initial-scale=1" />
        <meta name="description" content={message} />
        <title>{title}</title>
        <Links />
      </head>
      <body>
        <AppErrorBoundary
          status={isRouteErrorResponse(error) ? error.status : 500}
          statusText={isRouteErrorResponse(error) ? error.statusText : "服务器错误"}
          message={message}
        />
        <Scripts />
      </body>
    </html>
  );
}