import {
  ActionIcon,
  Autocomplete,
  Box,
  createStyles,
  Divider,
  Kbd,
  Menu,
  Popover,
  ScrollArea,
  Tooltip,
} from '@mantine/core';
import { useDebouncedValue, useHotkeys } from '@mantine/hooks';
import { showNotification } from '@mantine/notifications';
import { IconBrandYoutube, IconDownload, IconMovie, IconSearch } from '@tabler/icons';
import { useQuery } from '@tanstack/react-query';
import axios from 'axios';
import { useTranslation } from 'next-i18next';
import React, { forwardRef, useEffect, useRef, useState } from 'react';
import { useConfigContext } from '../../../config/provider';
import { OverseerrMediaDisplay } from '../../../modules/common';
import { IModule } from '../../../modules/ModuleTypes';
import { ConfigType } from '../../../types/config';
import { searchUrls } from '../../Settings/Common/SearchEngine/SearchEngineSelector';
import Tip from '../Tip';
import { useCardStyles } from '../useCardStyles';
import SmallAppItem from './SmallAppItem';

export const SearchModule: IModule = {
  title: 'Search',
  icon: IconSearch,
  component: Search,
  id: 'search',
};

interface ItemProps extends React.ComponentPropsWithoutRef<'div'> {
  label: string;
  disabled: boolean;
  value: string;
  description: string;
  icon: React.ReactNode;
  url: string;
  shortcut: string;
}

const useStyles = createStyles((theme) => ({
  item: {
    '&[data-hovered]': {
      backgroundColor: theme.colors[theme.primaryColor][theme.fn.primaryShade()],
      color: theme.white,
    },
  },
}));

export function Search() {
  const { t } = useTranslation('modules/search');
  const { config } = useConfigContext();
  const [searchQuery, setSearchQuery] = useState('');
  const [debounced] = useDebouncedValue(searchQuery, 250);
  const { classes: cardClasses } = useCardStyles(true);

  const isOverseerrEnabled = config?.apps.some(
    (x) => x.integration.type === 'overseerr' || x.integration.type === 'jellyseerr'
  );
  const overseerrApp = config?.apps.find(
    (app) => app.integration?.type === 'overseerr' || app.integration?.type === 'jellyseerr'
  );
  const searchEngineSettings = config?.settings.common.searchEngine;
  const searchEngineUrl = !searchEngineSettings
    ? searchUrls.google
    : searchEngineSettings.type === 'custom'
    ? searchEngineSettings.properties.template
    : searchUrls[searchEngineSettings.type];

  const searchEnginesList: ItemProps[] = [
    {
      icon: <IconSearch />,
      disabled: false,
      label: t('searchEngines.search.name'),
      value: 'search',
      description: t('searchEngines.search.description'),
      url: searchEngineUrl,
      shortcut: 's',
    },
    {
      icon: <IconDownload />,
      disabled: false,
      label: t('searchEngines.torrents.name'),
      value: 'torrents',
      description: t('searchEngines.torrents.description'),
      url: 'https://www.torrentdownloads.me/search/?search=',
      shortcut: 't',
    },
    {
      icon: <IconBrandYoutube />,
      disabled: false,
      label: t('searchEngines.youtube.name'),
      value: 'youtube',
      description: t('searchEngines.youtube.description'),
      url: 'https://www.youtube.com/results?search_query=',
      shortcut: 'y',
    },
    {
      icon: <IconMovie />,
      disabled: !(isOverseerrEnabled === true && overseerrApp !== undefined),
      label: t('searchEngines.overseerr.name'),
      value: 'overseerr',
      description: t('searchEngines.overseerr.description'),
      url: `${overseerrApp?.url}search?query=`,
      shortcut: 'm',
    },
  ];
  const [selectedSearchEngine, setSearchEngine] = useState<ItemProps>(searchEnginesList[0]);
  const matchingApps =
    config?.apps.filter((app) => {
      if (searchQuery === '' || searchQuery === undefined) {
        return false;
      }
      return app.name.toLowerCase().includes(searchQuery.toLowerCase());
    }) ?? [];
  const autocompleteData = matchingApps.map((app) => ({
    label: app.name,
    value: app.name,
    icon: app.appearance.iconUrl,
    url: app.behaviour.externalUrl ?? app.url,
  }));
  const AutoCompleteItem = forwardRef<HTMLDivElement, any>(
    ({ label, value, icon, url, ...others }: any, ref) => (
      <div ref={ref} {...others}>
        <SmallAppItem app={{ label, value, icon, url }} />
      </div>
    )
  );
  useEffect(() => {
    // Refresh the default search engine every time the config for it changes #521
    setSearchEngine(searchEnginesList[0]);
  }, [searchEngineUrl]);
  const textInput = useRef<HTMLInputElement>(null);
  useHotkeys([['mod+K', () => textInput.current?.focus()]]);
  const { classes } = useStyles();
  const openTarget = getOpenTarget(config);
  const [opened, setOpened] = useState(false);

  const {
    data: OverseerrResults,
    isLoading,
    error,
  } = useQuery(
    ['overseerr', debounced],
    async () => {
      const res = await axios.get(`/api/modules/overseerr?query=${debounced}`);
      return res.data.results ?? [];
    },
    {
      enabled:
        isOverseerrEnabled === true &&
        selectedSearchEngine.value === 'overseerr' &&
        debounced.length > 3,
      refetchOnWindowFocus: false,
      refetchOnMount: false,
      refetchInterval: false,
    }
  );

  const isModuleEnabled = config?.settings.customization.layout.enabledSearchbar;
  if (!isModuleEnabled) {
    return null;
  }

  //TODO: Fix the bug where clicking anything inside the Modal to ask for a movie
  // will close it (Because it closes the underlying Popover)
  return (
    <Box style={{ width: '100%', maxWidth: 400 }}>
      <Popover
        opened={OverseerrResults && OverseerrResults.length > 0 && opened && searchQuery.length > 3}
        position="bottom"
        withinPortal
        shadow="md"
        radius="md"
        zIndex={100}
        transition="pop-top-right"
      >
        <Popover.Target>
          <Autocomplete
            ref={textInput}
            onFocusCapture={() => setOpened(true)}
            autoFocus
            rightSection={<SearchModuleMenu />}
            placeholder={t(`searchEngines.${selectedSearchEngine.value}.description`)}
            value={searchQuery}
            onChange={(currentString) => tryMatchSearchEngine(currentString, setSearchQuery)}
            itemComponent={AutoCompleteItem}
            data={autocompleteData}
            onItemSubmit={(item) => {
              setOpened(false);
              if (item.url) {
                setSearchQuery('');
                window.open(item.openedUrl ? item.openedUrl : item.url, openTarget);
              }
            }}
            // Replace %s if it is in selectedSearchEngine.url with searchQuery, otherwise append searchQuery at the end of it
            onKeyDown={(event) => {
              if (
                event.key === 'Enter' &&
                searchQuery.length > 0 &&
                autocompleteData.length === 0
              ) {
                if (selectedSearchEngine.url.includes('%s')) {
                  window.open(selectedSearchEngine.url.replace('%s', searchQuery), openTarget);
                } else {
                  window.open(selectedSearchEngine.url + searchQuery, openTarget);
                }
              }
            }}
            classNames={{
              input: cardClasses.card,
            }}
            radius="lg"
            size="md"
          />
        </Popover.Target>
        <Popover.Dropdown>
          <ScrollArea style={{ height: '80vh', maxWidth: '90vw' }} offsetScrollbars>
            {OverseerrResults &&
              OverseerrResults.slice(0, 4).map((result: any, index: number) => (
                <React.Fragment key={index}>
                  <OverseerrMediaDisplay key={result.id} media={result} />
                  {index < OverseerrResults.length - 1 && index < 3 && (
                    <Divider variant="dashed" my="xs" />
                  )}
                </React.Fragment>
              ))}
          </ScrollArea>
        </Popover.Dropdown>
      </Popover>
    </Box>
  );

  function tryMatchSearchEngine(query: string, setSearchQuery: (value: string) => void) {
    const foundSearchEngine = searchEnginesList.find(
      (engine) => query.includes(`!${engine.shortcut}`) && !engine.disabled
    );
    if (foundSearchEngine) {
      setSearchQuery(query.replace(`!${foundSearchEngine.shortcut}`, ''));
      changeSearchEngine(foundSearchEngine);
    } else {
      setSearchQuery(query);
    }
  }

  function SearchModuleMenu() {
    return (
      <Menu shadow="md" width={200} withinPortal classNames={classes}>
        <Menu.Target>
          <ActionIcon>{selectedSearchEngine.icon}</ActionIcon>
        </Menu.Target>

        <Menu.Dropdown>
          {searchEnginesList.map((item) => (
            <Tooltip
              multiline
              label={item.description}
              withinPortal
              width={200}
              position="left"
              key={item.value}
            >
              <Menu.Item
                key={item.value}
                icon={item.icon}
                rightSection={<Kbd>!{item.shortcut}</Kbd>}
                disabled={item.disabled}
                onClick={() => {
                  changeSearchEngine(item);
                }}
              >
                {item.label}
              </Menu.Item>
            </Tooltip>
          ))}
          <Menu.Divider />
          <Menu.Label>
            <Tip>
              {t('tip')} <Kbd>mod+k</Kbd>{' '}
            </Tip>
          </Menu.Label>
        </Menu.Dropdown>
      </Menu>
    );
  }

  function changeSearchEngine(item: ItemProps) {
    setSearchEngine(item);
    showNotification({
      radius: 'lg',
      disallowClose: true,
      id: 'spotlight',
      autoClose: 1000,
      icon: <ActionIcon size="sm">{item.icon}</ActionIcon>,
      message: t('switchedSearchEngine', { searchEngine: t(`searchEngines.${item.value}.name`) }),
    });
  }
}

const getOpenTarget = (config: ConfigType | undefined): '_blank' | '_self' => {
  if (!config || config.settings.common.searchEngine.properties.openInNewTab === undefined) {
    return '_blank';
  }

  return config.settings.common.searchEngine.properties.openInNewTab ? '_blank' : '_self';
};