import { Autocomplete, Group, Text, useMantineTheme } from '@mantine/core';
import { useDisclosure, useHotkeys } from '@mantine/hooks';
import {
  IconBrandYoutube,
  IconDownload,
  IconMovie,
  IconSearch,
  IconWorld,
  TablerIconsProps,
} from '@tabler/icons-react';
import { useSession } from 'next-auth/react';
import { useTranslation } from 'next-i18next';
import { useRouter } from 'next/router';
import { ReactNode, forwardRef, useMemo, useRef, useState } from 'react';
import { useConfigContext } from '~/config/provider';
import { useGetExternalUrl } from '~/hooks/useExternalUrl';
import { api } from '~/utils/api';

import { MovieModal } from './Search/MovieModal';

type SearchProps = {
  isMobile?: boolean;
  autoFocus?: boolean;
};

export const Search = ({ isMobile, autoFocus }: SearchProps) => {
  const { t } = useTranslation('layout/header');
  const [search, setSearch] = useState('');
  const ref = useRef<HTMLInputElement>(null);
  useHotkeys([['mod+K', () => ref.current?.focus()]]);
  const { data: sessionData } = useSession();
  const { data: userWithSettings } = api.user.withSettings.useQuery(undefined, {
    enabled: !!sessionData?.user,
  });
  const { config } = useConfigContext();
  const { colors } = useMantineTheme();
  const router = useRouter();
  const [showMovieModal, movieModal] = useDisclosure(router.query.movie === 'true');

  const apps = useConfigApps(search);
  const engines = generateEngines(
    search,
    userWithSettings?.settings.searchTemplate ?? 'https://www.google.com/search?q=%s'
  )
    .filter(
      (engine) =>
        engine.sort !== 'movie' || config?.apps.some((app) => app.integration.type === engine.value)
    )
    .map((engine) => ({
      ...engine,
      label: t(`search.engines.${engine.sort}`, {
        app: engine.value,
        query: search,
      }),
    }));
  const data = [...apps, ...engines];

  return (
    <>
      <Autocomplete
        ref={ref}
        radius="xl"
        w={isMobile ? '100%' : 400}
        variant="filled"
        placeholder={`${t('search.label')}...`}
        hoverOnSearchChange
        autoFocus={autoFocus}
        rightSection={
          <IconSearch
            onClick={() => ref.current?.focus()}
            color={colors.gray[5]}
            size={16}
            stroke={1.5}
          />
        }
        limit={8}
        value={search}
        onChange={setSearch}
        data={data}
        itemComponent={SearchItemComponent}
        filter={(value, item: SearchAutoCompleteItem) =>
          engines.some((engine) => engine.sort === item.sort) ||
          item.value.toLowerCase().includes(value.trim().toLowerCase())
        }
        classNames={{
          input: 'dashboard-header-search-input',
          root: 'dashboard-header-search-root',
        }}
        onItemSubmit={(item: SearchAutoCompleteItem) => {
          setSearch('');
          if (item.sort === 'movie') {
            const url = new URL(`${window.location.origin}${router.asPath}`);
            url.searchParams.set('movie', 'true');
            url.searchParams.set('search', search);
            url.searchParams.set('type', item.value);
            router.push(url, undefined, { shallow: true });
            movieModal.open();
            return;
          }
          const target = userWithSettings?.settings.openSearchInNewTab ? '_blank' : '_self';
          window.open(item.metaData.url, target);
        }}
        aria-label={t('search.label') as string}
      />
      <MovieModal
        opened={showMovieModal}
        closeModal={() => {
          movieModal.close();
          const url = new URL(`${window.location.origin}${router.asPath}`);
          url.searchParams.delete('movie');
          url.searchParams.delete('search');
          url.searchParams.delete('type');
          router.push(url, undefined, { shallow: true });
        }}
      />
    </>
  );
};

const SearchItemComponent = forwardRef<HTMLDivElement, SearchAutoCompleteItem & { label: string }>(
  ({ icon, label, value, sort, ...others }, ref) => {
    let Icon = getItemComponent(icon);

    return (
      <Group ref={ref} noWrap {...others}>
        <Icon size={20} />
        <Text>{label}</Text>
      </Group>
    );
  }
);

const getItemComponent = (icon: SearchAutoCompleteItem['icon']) => {
  if (typeof icon !== 'string') {
    return icon;
  }

  return (props: TablerIconsProps) => (
    <img src={icon} height={props.size} width={props.size} style={{ objectFit: 'contain' }} />
  );
};

const useConfigApps = (search: string) => {
  const { config } = useConfigContext();
  const getHref = useGetExternalUrl();
  return useMemo(() => {
    if (search.trim().length === 0) return [];
    const apps = config?.apps.filter((app) =>
      app.name.toLowerCase().includes(search.toLowerCase())
    );
    return (
      apps?.map((app) => ({
        icon: app.appearance.iconUrl,
        label: app.name,
        value: app.name,
        sort: 'app',
        metaData: {
          url: getHref(app),
        },
      })) ?? []
    );
  }, [search, config]);
};

type SearchAutoCompleteItem = {
  icon: ((props: TablerIconsProps) => ReactNode) | string;
  value: string;
} & (
  | {
      sort: 'web' | 'torrent' | 'youtube' | 'app';
      metaData: {
        url: string;
      };
    }
  | {
      sort: 'movie';
    }
);
const movieApps = ['overseerr', 'jellyseerr'] as const;
const generateEngines = (searchValue: string, webTemplate: string) =>
  searchValue.trim().length > 0
    ? ([
        {
          icon: IconWorld,
          value: `web`,
          sort: 'web',
          metaData: {
            url: webTemplate.includes('%s')
              ? webTemplate.replace('%s', searchValue)
              : webTemplate + searchValue,
          },
        },
        {
          icon: IconDownload,
          value: `torrent`,
          sort: 'torrent',
          metaData: {
            url: `https://www.torrentdownloads.me/search/?search=${searchValue}`,
          },
        },
        {
          icon: IconBrandYoutube,
          value: 'youtube',
          sort: 'youtube',
          metaData: {
            url: `https://www.youtube.com/results?search_query=${searchValue}`,
          },
        },
        ...movieApps.map(
          (name) =>
            ({
              icon: IconMovie,
              value: name,
              sort: 'movie',
            }) as const
        ),
      ] as const satisfies Readonly<SearchAutoCompleteItem[]>)
    : [];