import React, { useCallback, useState, useMemo, useEffect } from 'react';
import { useRouter } from 'next/router';
import { getModelById, delModelById, putModelById } from '@/api/model';
import type { ModelSchema } from '@/types/mongoSchema';
import { Card, Box, Flex, Button, Tag, Grid } from '@chakra-ui/react';
import { useToast } from '@/hooks/useToast';
import { useForm } from 'react-hook-form';
import { formatModelStatus, modelList, defaultModel } from '@/constants/model';
import { useGlobalStore } from '@/store/global';
import { useScreen } from '@/hooks/useScreen';
import { useQuery } from '@tanstack/react-query';
import dynamic from 'next/dynamic';
import { useUserStore } from '@/store/user';

const ModelEditForm = dynamic(() => import('./components/ModelEditForm'));
const ModelDataCard = dynamic(() => import('./components/ModelDataCard'));

const ModelDetail = ({ modelId }: { modelId: string }) => {
  const { toast } = useToast();
  const router = useRouter();
  const { isPc } = useScreen();
  const { userInfo } = useUserStore();
  const { setLoading } = useGlobalStore();

  const [model, setModel] = useState<ModelSchema>(defaultModel);
  const formHooks = useForm<ModelSchema>({
    defaultValues: model
  });

  const isOwner = useMemo(() => model.userId === userInfo?._id, [model.userId, userInfo?._id]);

  /* 加载模型数据 */
  const loadModel = useCallback(async () => {
    setLoading(true);
    try {
      const res = await getModelById(modelId);
      setModel(res);
      formHooks.reset(res);
    } catch (err: any) {
      toast({
        title: err?.message || '获取模型异常',
        status: 'error'
      });
    }
    setLoading(false);
    return null;
  }, [formHooks, modelId, setLoading, toast]);

  useQuery([modelId], loadModel);

  /* 点击删除 */
  const handleDelModel = useCallback(async () => {
    if (!model) return;
    setLoading(true);
    try {
      await delModelById(model._id);
      toast({
        title: '删除成功',
        status: 'success'
      });
      router.replace('/model/list');
    } catch (err: any) {
      toast({
        title: err?.message || '删除失败',
        status: 'error'
      });
    }
    setLoading(false);
  }, [setLoading, model, router, toast]);

  /* 点前往聊天预览页 */
  const handlePreviewChat = useCallback(async () => {
    router.push(`/chat?modelId=${modelId}`);
  }, [router, modelId]);

  // 提交保存模型修改
  const saveSubmitSuccess = useCallback(
    async (data: ModelSchema) => {
      setLoading(true);
      try {
        await putModelById(data._id, {
          name: data.name,
          avatar: data.avatar || '/icon/logo.png',
          chat: data.chat,
          share: data.share,
          security: data.security
        });
        toast({
          title: '更新成功',
          status: 'success'
        });
      } catch (err: any) {
        toast({
          title: err?.message || '更新失败',
          status: 'error'
        });
      }
      setLoading(false);
    },
    [setLoading, toast]
  );
  // 提交保存表单失败
  const saveSubmitError = useCallback(() => {
    // deep search message
    const deepSearch = (obj: any): string => {
      if (!obj) return '提交表单错误';
      if (!!obj.message) {
        return obj.message;
      }
      return deepSearch(Object.values(obj)[0]);
    };
    toast({
      title: deepSearch(formHooks.formState.errors),
      status: 'error',
      duration: 4000,
      isClosable: true
    });
  }, [formHooks.formState.errors, toast]);

  useEffect(() => {
    router.prefetch('/chat');

    window.onbeforeunload = (e) => {
      e.preventDefault();
      e.returnValue = '内容已修改，确认离开页面吗？';
    };

    return () => {
      window.onbeforeunload = null;
    };
  }, [router]);

  return (
    <>
      {/* 头部 */}
      <Card px={6} py={3}>
        {isPc ? (
          <Flex alignItems={'center'}>
            <Box fontSize={'xl'} fontWeight={'bold'}>
              {model.name}
            </Box>
            <Tag ml={2} variant="solid" colorScheme={formatModelStatus[model.status].colorTheme}>
              {formatModelStatus[model.status].text}
            </Tag>
            <Box flex={1} />
            <Button variant={'outline'} onClick={handlePreviewChat}>
              对话体验
            </Button>
            {isOwner && (
              <Button ml={4} onClick={formHooks.handleSubmit(saveSubmitSuccess, saveSubmitError)}>
                保存修改
              </Button>
            )}
          </Flex>
        ) : (
          <>
            <Flex alignItems={'center'}>
              <Box as={'h3'} fontSize={'xl'} fontWeight={'bold'} flex={1}>
                {model?.name}
              </Box>
              <Tag ml={2} colorScheme={formatModelStatus[model.status].colorTheme}>
                {formatModelStatus[model.status].text}
              </Tag>
            </Flex>
            <Box mt={4} textAlign={'right'}>
              <Button variant={'outline'} size={'sm'} onClick={handlePreviewChat}>
                对话体验
              </Button>
              {isOwner && (
                <Button
                  ml={4}
                  size={'sm'}
                  onClick={formHooks.handleSubmit(saveSubmitSuccess, saveSubmitError)}
                >
                  保存修改
                </Button>
              )}
            </Box>
          </>
        )}
      </Card>
      <Grid mt={5} gridTemplateColumns={['1fr', '1fr 1fr']} gridGap={5}>
        <ModelEditForm formHooks={formHooks} handleDelModel={handleDelModel} isOwner={isOwner} />

        {modelId && (
          <Card p={4} gridColumnStart={[1, 1]} gridColumnEnd={[2, 3]}>
            <ModelDataCard modelId={modelId} isOwner={isOwner} />
          </Card>
        )}
      </Grid>
    </>
  );
};

export default ModelDetail;

export async function getServerSideProps(context: any) {
  const modelId = context.query?.modelId || '';

  return {
    props: { modelId }
  };
}