import type { FC } from "react";
import "antd/dist/reset.css"; // 引入 antd 的样式
import { useEffect, useState } from "react";
import { useAsyncEffect } from "ahooks";
import { useThemeContext } from "@/app/components/chat/embedded-chatbot/theme/theme-context";
import { ChatWithHistoryContext, useChatWithHistoryContext } from "./context";
import { useChatWithHistory } from "./hooks";
import Sidebar from "./sidebar";
import HeaderInMobile from "./header-in-mobile";
import ConfigPanel from "./config-panel";
import ChatWrapper from "./chat-wrapper";
import type { InstalledApp } from "@/models/explore";
import Loading from "@/app/components/base/loading";
import useBreakpoints, { MediaType } from "@/hooks/use-breakpoints";
import { useRouter } from "next/navigation";
import AppUnavailable from "@/app/components/base/app-unavailable";

type ChatWithHistoryProps = {
  className?: string;
  userStr?: string;
};

const ChatWithHistory: FC<ChatWithHistoryProps> = ({ className, userStr }) => {
  const {
    appInfoError,
    appData,
    appInfoLoading,
    appPrevChatTree,
    showConfigPanelBeforeChat,
    appChatListDataLoading,
    chatShouldReloadKey,
    isMobile,
    themeBuilder,
  } = useChatWithHistoryContext();

  const chatReady = !showConfigPanelBeforeChat || !!appPrevChatTree.length;
  const customConfig = appData?.custom_config;
  const site = appData?.site;

  useEffect(() => {
    themeBuilder?.buildTheme(
      site?.chat_color_theme,
      site?.chat_color_theme_inverted
    );
    if (site) {
      if (customConfig) document.title = `${site.title}`;
      else document.title = `${site.title} - Powered by Dify`;
    }
  }, [site, customConfig, themeBuilder]);

  if (appInfoLoading) {
    return <Loading type="app" />;
  }

  if (appInfoError) {
    return <AppUnavailable />;
  }

  return (
    <div
      className={`h-full flex bg-white ${className} ${isMobile && "flex-col"}`}
    >
      {!isMobile && <Sidebar userStr={userStr} />}
      {isMobile && <HeaderInMobile />}
      <div
        className={`grow overflow-hidden ${
          showConfigPanelBeforeChat &&
          !appPrevChatTree.length &&
          "flex items-center justify-center"
        }`}
      >
        {showConfigPanelBeforeChat &&
          !appChatListDataLoading &&
          !appPrevChatTree.length && (
            <div
              className={`flex w-full items-center justify-center h-full ${
                isMobile && "px-4"
              }`}
            >
              <ConfigPanel />
            </div>
          )}
        {appChatListDataLoading && chatReady && <Loading type="app" />}
        {chatReady && !appChatListDataLoading && (
          <ChatWrapper key={chatShouldReloadKey} />
        )}
      </div>
    </div>
  );
};

export type ChatWithHistoryWrapProps = {
  installedAppInfo?: InstalledApp;
  className?: string;
  userStr?: string;
};

const ChatWithHistoryWrap: FC<ChatWithHistoryWrapProps> = ({
  installedAppInfo,
  className,
  userStr,
}) => {
  const media = useBreakpoints();
  const isMobile = media === MediaType.mobile;
  const themeBuilder = useThemeContext();

  const {
    appInfoError,
    appInfoLoading,
    appData,
    appParams,
    appMeta,
    appChatListDataLoading,
    currentConversationId,
    currentConversationItem,
    appPrevChatTree,
    pinnedConversationList,
    conversationList,
    showConfigPanelBeforeChat,
    newConversationInputs,
    newConversationInputsRef,
    handleNewConversationInputsChange,
    inputsForms,
    handleNewConversation,
    handleStartChat,
    handleChangeConversation,
    handlePinConversation,
    handleUnpinConversation,
    handleDeleteConversation,
    conversationRenaming,
    handleRenameConversation,
    handleNewConversationCompleted,
    chatShouldReloadKey,
    isInstalledApp,
    appId,
    handleFeedback,
    currentChatInstanceRef,
    feedbackModal,
  } = useChatWithHistory(installedAppInfo);

  return (
    <ChatWithHistoryContext.Provider
      value={{
        appInfoError,
        appInfoLoading,
        appData,
        appParams,
        appMeta,
        appChatListDataLoading,
        currentConversationId,
        currentConversationItem,
        appPrevChatTree,
        pinnedConversationList,
        conversationList,
        showConfigPanelBeforeChat,
        newConversationInputs,
        newConversationInputsRef,
        handleNewConversationInputsChange,
        inputsForms,
        handleNewConversation,
        handleStartChat,
        handleChangeConversation,
        handlePinConversation,
        handleUnpinConversation,
        handleDeleteConversation,
        conversationRenaming,
        handleRenameConversation,
        handleNewConversationCompleted,
        chatShouldReloadKey,
        isMobile,
        isInstalledApp,
        appId,
        handleFeedback,
        currentChatInstanceRef,
        themeBuilder,
      }}
    >
      <ChatWithHistory className={className} userStr={userStr} />
      {feedbackModal} {/* 确保 feedbackModal 正确渲染 */}
    </ChatWithHistoryContext.Provider>
  );
};

const ChatWithHistoryWrapWithCheckToken: FC<ChatWithHistoryWrapProps> = ({
  installedAppInfo,
  className,
}) => {
  const [initialized, setInitialized] = useState(false);
  const [appUnavailable, setAppUnavailable] = useState<boolean>(false);
  const [resCode, setResCode] = useState<number>(200);
  const router = useRouter();
  const [userName, setUserName] = useState("");
  const [nickName, setNickName] = useState("");

  useAsyncEffect(async () => {
    if (!initialized) {
      if (!installedAppInfo) {
        const accessToken = localStorage.getItem("token");
        if (!accessToken) {
          router.replace("/login");
        } else {
          fetch(`/dev-api/getInfo`, {
            method: "GET",
            headers: {
              Authorization: `Bearer ${accessToken}`,
            },
          })
            .then((res) => res.json())
            .then((data) => {
              if (data.code !== 200) {
                localStorage.removeItem("token");
                router.replace("/login");
              } else {
                setUserName(data.user.userName);
                setNickName(data.user.nickName);
              }
            })
            .catch(() => {
              setResCode(500);
              setAppUnavailable(true);
            });
        }
      }
      setInitialized(true);
    }
  }, []);

  if (!initialized) return null;

  if (appUnavailable) return <AppUnavailable code={resCode} />;

  return (
    <ChatWithHistoryWrap
      installedAppInfo={installedAppInfo}
      className={className}
      userStr={`${nickName}[${userName}]`}
    />
  );
};

export default ChatWithHistoryWrapWithCheckToken;