about summary refs log tree commit diff
path: root/src/screens/Messages/Conversation/MessageInput.tsx
blob: 2b3ee45df6d51cae70da988d69bd38536f06edc0 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
import React from 'react'
import {
  Dimensions,
  Keyboard,
  NativeSyntheticEvent,
  Pressable,
  TextInput,
  TextInputContentSizeChangeEventData,
  View,
} from 'react-native'
import {useSafeAreaInsets} from 'react-native-safe-area-context'
import {msg} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import Graphemer from 'graphemer'

import {HITSLOP_10, MAX_DM_GRAPHEME_LENGTH} from '#/lib/constants'
import {useHaptics} from '#/lib/haptics'
import {
  useMessageDraft,
  useSaveMessageDraft,
} from '#/state/messages/message-drafts'
import * as Toast from '#/view/com/util/Toast'
import {atoms as a, useTheme} from '#/alf'
import {PaperPlane_Stroke2_Corner0_Rounded as PaperPlane} from '#/components/icons/PaperPlane'

export function MessageInput({
  onSendMessage,
  scrollToEnd,
}: {
  onSendMessage: (message: string) => void
  scrollToEnd: () => void
}) {
  const {_} = useLingui()
  const t = useTheme()
  const playHaptic = useHaptics()
  const {getDraft, clearDraft} = useMessageDraft()
  const [message, setMessage] = React.useState(getDraft)
  const [maxHeight, setMaxHeight] = React.useState<number | undefined>()
  const [isInputScrollable, setIsInputScrollable] = React.useState(false)

  const {top: topInset} = useSafeAreaInsets()

  const inputRef = React.useRef<TextInput>(null)

  const onSubmit = React.useCallback(() => {
    if (message.trim() === '') {
      return
    }
    if (new Graphemer().countGraphemes(message) > MAX_DM_GRAPHEME_LENGTH) {
      Toast.show(_(msg`Message is too long`))
      return
    }
    clearDraft()
    onSendMessage(message.trimEnd())
    playHaptic()
    setMessage('')
    setTimeout(() => {
      inputRef.current?.focus()
    }, 100)
  }, [message, onSendMessage, playHaptic, _, clearDraft])

  const onInputLayout = React.useCallback(
    (e: NativeSyntheticEvent<TextInputContentSizeChangeEventData>) => {
      const keyboardHeight = Keyboard.metrics()?.height ?? 0
      const windowHeight = Dimensions.get('window').height

      const max = windowHeight - keyboardHeight - topInset - 100
      const availableSpace = max - e.nativeEvent.contentSize.height

      setMaxHeight(max)
      setIsInputScrollable(availableSpace < 30)

      scrollToEnd()
    },
    [scrollToEnd, topInset],
  )

  useSaveMessageDraft(message)

  return (
    <View style={a.p_md}>
      <View
        style={[
          a.w_full,
          a.flex_row,
          a.py_sm,
          a.px_sm,
          a.pl_md,
          t.atoms.bg_contrast_25,
          {borderRadius: 23},
        ]}>
        <TextInput
          accessibilityLabel={_(msg`Message input field`)}
          accessibilityHint={_(msg`Type your message here`)}
          placeholder={_(msg`Write a message`)}
          placeholderTextColor={t.palette.contrast_500}
          value={message}
          multiline={true}
          onChangeText={setMessage}
          style={[a.flex_1, a.text_md, a.px_sm, t.atoms.text, {maxHeight}]}
          keyboardAppearance={t.name === 'light' ? 'light' : 'dark'}
          scrollEnabled={isInputScrollable}
          blurOnSubmit={false}
          onFocus={scrollToEnd}
          onContentSizeChange={onInputLayout}
          ref={inputRef}
        />
        <Pressable
          accessibilityRole="button"
          accessibilityLabel={_(msg`Send message`)}
          accessibilityHint=""
          hitSlop={HITSLOP_10}
          style={[
            a.rounded_full,
            a.align_center,
            a.justify_center,
            {height: 30, width: 30, backgroundColor: t.palette.primary_500},
          ]}
          onPress={onSubmit}>
          <PaperPlane fill={t.palette.white} style={[a.relative, {left: 1}]} />
        </Pressable>
      </View>
    </View>
  )
}