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path: root/src/screens/Home/NoFeedsPinned.tsx
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import React from 'react'
import {View} from 'react-native'
import {TID} from '@atproto/common-web'
import {msg, Trans} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import {useNavigation} from '@react-navigation/native'

import {DISCOVER_SAVED_FEED, TIMELINE_SAVED_FEED} from '#/lib/constants'
import {isNative} from '#/platform/detection'
import {useOverwriteSavedFeedsMutation} from '#/state/queries/preferences'
import {UsePreferencesQueryResponse} from '#/state/queries/preferences'
import {NavigationProp} from 'lib/routes/types'
import {CenteredView} from '#/view/com/util/Views'
import {atoms as a} from '#/alf'
import {Button, ButtonIcon, ButtonText} from '#/components/Button'
import {useHeaderOffset} from '#/components/hooks/useHeaderOffset'
import {ListSparkle_Stroke2_Corner0_Rounded as ListSparkle} from '#/components/icons/ListSparkle'
import {PlusLarge_Stroke2_Corner0_Rounded as Plus} from '#/components/icons/Plus'
import {Link} from '#/components/Link'
import {Text} from '#/components/Typography'

export function NoFeedsPinned({
  preferences,
}: {
  preferences: UsePreferencesQueryResponse
}) {
  const {_} = useLingui()
  const headerOffset = useHeaderOffset()
  const navigation = useNavigation<NavigationProp>()
  const {isPending, mutateAsync: overwriteSavedFeeds} =
    useOverwriteSavedFeedsMutation()

  const addRecommendedFeeds = React.useCallback(async () => {
    let skippedTimeline = false
    let skippedDiscover = false
    let remainingSavedFeeds = []

    // remove first instance of both timeline and discover, since we're going to overwrite them
    for (const savedFeed of preferences.savedFeeds) {
      if (savedFeed.type === 'timeline' && !skippedTimeline) {
        skippedTimeline = true
      } else if (
        savedFeed.value === DISCOVER_SAVED_FEED.value &&
        !skippedDiscover
      ) {
        skippedDiscover = true
      } else {
        remainingSavedFeeds.push(savedFeed)
      }
    }

    const toSave = [
      {
        ...DISCOVER_SAVED_FEED,
        pinned: true,
        id: TID.nextStr(),
      },
      {
        ...TIMELINE_SAVED_FEED,
        pinned: true,
        id: TID.nextStr(),
      },
      ...remainingSavedFeeds,
    ]

    await overwriteSavedFeeds(toSave)
  }, [overwriteSavedFeeds, preferences.savedFeeds])

  const onPressFeedsLink = React.useCallback(() => {
    if (isNative) {
      // Hack that's necessary due to how our navigators are set up.
      navigation.navigate('FeedsTab')
      navigation.popToTop()
      return false
    }
  }, [navigation])

  return (
    <CenteredView sideBorders style={[a.h_full_vh]}>
      <View
        style={[
          a.align_center,
          a.h_full_vh,
          a.py_3xl,
          a.px_xl,
          {
            paddingTop: headerOffset + a.py_3xl.paddingTop,
          },
        ]}>
        <View style={[a.align_center, a.gap_sm, a.pb_xl]}>
          <Text style={[a.text_xl, a.font_bold]}>
            <Trans>Whoops!</Trans>
          </Text>
          <Text
            style={[a.text_md, a.text_center, a.leading_snug, {maxWidth: 340}]}>
            <Trans>
              Looks like you unpinned all your feeds. But don't worry, you can
              add some below 😄
            </Trans>
          </Text>
        </View>

        <View style={[a.flex_row, a.gap_md, a.justify_center, a.flex_wrap]}>
          <Button
            disabled={isPending}
            label={_(msg`Apply default recommended feeds`)}
            size="medium"
            variant="solid"
            color="primary"
            onPress={addRecommendedFeeds}>
            <ButtonIcon icon={Plus} position="left" />
            <ButtonText>{_(msg`Add recommended feeds`)}</ButtonText>
          </Button>

          <Link
            label={_(msg`Browse other feeds`)}
            to="/feeds"
            onPress={onPressFeedsLink}
            size="medium"
            variant="solid"
            color="secondary">
            <ButtonIcon icon={ListSparkle} position="left" />
            <ButtonText>{_(msg`Browse other feeds`)}</ButtonText>
          </Link>
        </View>
      </View>
    </CenteredView>
  )
}