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path: root/src/view/com/util/Toast.tsx
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import React, {useEffect, useState} from 'react'
import {View} from 'react-native'
import Animated, {FadeInUp, FadeOutUp} from 'react-native-reanimated'
import RootSiblings from 'react-native-root-siblings'
import {useSafeAreaInsets} from 'react-native-safe-area-context'
import {
  FontAwesomeIcon,
  Props as FontAwesomeProps,
} from '@fortawesome/react-native-fontawesome'

import {atoms as a, useTheme} from '#/alf'
import {Text} from '#/components/Typography'
import {IS_TEST} from '#/env'

const TIMEOUT = 2e3

export function show(
  message: string,
  icon: FontAwesomeProps['icon'] = 'check',
) {
  if (IS_TEST) return
  const item = new RootSiblings(<Toast message={message} icon={icon} />)
  // timeout has some leeway to account for the animation
  setTimeout(() => {
    item.destroy()
  }, TIMEOUT + 1e3)
}

function Toast({
  message,
  icon,
}: {
  message: string
  icon: FontAwesomeProps['icon']
}) {
  const t = useTheme()
  const {top} = useSafeAreaInsets()

  // for the exit animation to work on iOS the animated component
  // must not be the root component
  // so we need to wrap it in a view and unmount the toast ahead of time
  const [alive, setAlive] = useState(true)

  useEffect(() => {
    setTimeout(() => {
      setAlive(false)
    }, TIMEOUT)
  }, [])

  return (
    <View
      style={[a.absolute, {top: top + 15, left: 16, right: 16}]}
      pointerEvents="none">
      {alive && (
        <Animated.View
          entering={FadeInUp}
          exiting={FadeOutUp}
          style={[
            a.flex_1,
            t.atoms.bg,
            a.shadow_lg,
            t.atoms.border_contrast_medium,
            a.rounded_sm,
            a.px_md,
            a.py_lg,
            a.border,
            a.flex_row,
            a.gap_md,
          ]}>
          <View
            style={[
              a.flex_shrink_0,
              a.rounded_full,
              {width: 32, height: 32},
              t.atoms.bg_contrast_25,
              a.align_center,
              a.justify_center,
            ]}>
            <FontAwesomeIcon
              icon={icon}
              size={16}
              style={t.atoms.text_contrast_low}
            />
          </View>
          <View style={[a.h_full, a.justify_center, a.flex_1]}>
            <Text style={a.text_md}>{message}</Text>
          </View>
        </Animated.View>
      )}
    </View>
  )
}