React

import { useEffect, useRef, useState } from 'react'
import { useSelector } from 'react-redux'

import injectScript from 'core/lib/injectScript'
import { QueryParam } from 'core/lib/QueryParam'
import { useLazyThunk } from 'core/redux/hooks'
import { selectBasePath } from 'core/redux/selectors/auth'
import { CreateAuthTokenResponse } from 'core/services/query_endpoint/models'
import { Theme } from 'embedded_search/Theme'
import { useQueryParam } from 'web/common/lib/hooks'
import { getWebAppUrl } from 'web/routing/lib/paths'

import styles from './styles/GleanWebSDKStyles'

const loginThunks = () => import('web/login/lib/thunks')

const light: Theme = {
  borderLight: '#eaebed',
  hover: '#f5fcfc',
  primaryHighlight: '#087d76',
  primaryHover: '#1ca99e',
  selected: '#e8fcfb',
  textPrimary: '#1b2126',
  textSecondary: '#71747d',
  visited: '#7400be'
}

interface GleanWebSDKProps {
  authToken?: CreateAuthTokenResponse
}

const GleanSearch = ({ authToken }: GleanWebSDKProps) => {
  const [query, setQuery] = useQueryParam(QueryParam.QUERY)
  const [datasource] = useQueryParam(QueryParam.TAB)
  const elementRef = useRef<HTMLDivElement>(null)
  const basePath = useSelector(selectBasePath)

  useEffect(() => {
    if (!elementRef.current) return

    window.GleanWebSDK.renderSearchBox(elementRef.current, {
      authToken,
      backend: basePath,
      datasource,
      onSearch: setQuery,
      query,
      searchBoxCustomizations: {
        borderRadius: 10,
        boxShadow: 'none',
        horizontalMargin: 0,
        placeholderText: 'Search for anything (Beta)',
        verticalMargin: 0
      },
      theme: { light }
    })
  }, [authToken, basePath, datasource, query, setQuery])

  return <div ref={elementRef} style={styles.searchBox} />
}

const GleanSearchResultsPage = ({ authToken }: GleanWebSDKProps) => {
  const [query, setQuery] = useQueryParam(QueryParam.QUERY)
  const [datasource, setDatasource] = useQueryParam(QueryParam.TAB)
  const elementRef = useRef<HTMLDivElement>(null)
  const basePath = useSelector(selectBasePath)

  useEffect(() => {
    if (!elementRef.current) return

    window.GleanWebSDK.renderSearchResults(elementRef.current, {
      authToken,
      backend: basePath,
      datasource,
      onDatasourceChange: setDatasource,
      onSearch: setQuery,
      query,
      theme: { light }
    })
  }, [authToken, basePath, datasource, query, setDatasource, setQuery])

  return <div ref={elementRef} style={styles.serp} />
}

const GleanWebSDKGallery = () => {
  const fetchAuthTokenThunk = useLazyThunk(loginThunks, 'fetchAuthToken')
  const [authToken, setAuthToken] = useState<CreateAuthTokenResponse | undefined>()
  const [isLoading, setIsLoading] = useState(true)

  useEffect(() => {
    ;(async () => {
      setAuthToken(await fetchAuthTokenThunk())
    })()
    injectScript({ id: 'embedded_search', src: getWebAppUrl('/embedded-search-latest.min.js') }).then(() =>
      setIsLoading(false)
    )
  }, [fetchAuthTokenThunk])

  if (isLoading) return null

  return (
    <div style={styles.container}>
      <GleanSearch authToken={authToken} />
      <GleanSearchResultsPage authToken={authToken} />
    </div>
  )
}

export default GleanWebSDKGallery