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import React, {
forwardRef,
useCallback,
useRef,
useMemo,
ComponentProps,
} from 'react'
import {
NativeSyntheticEvent,
StyleSheet,
TextInput as RNTextInput,
TextInputSelectionChangeEventData,
View,
} from 'react-native'
import PasteInput, {
PastedFile,
PasteInputRef,
} from '@mattermost/react-native-paste-input'
import {AppBskyRichtextFacet, RichText} from '@atproto/api'
import isEqual from 'lodash.isequal'
import {UserAutocompleteModel} from 'state/models/discovery/user-autocomplete'
import {Autocomplete} from './mobile/Autocomplete'
import {Text} from 'view/com/util/text/Text'
import {cleanError} from 'lib/strings/errors'
import {getMentionAt, insertMentionAt} from 'lib/strings/mention-manip'
import {usePalette} from 'lib/hooks/usePalette'
import {useTheme} from 'lib/ThemeContext'
import {isUriImage} from 'lib/media/util'
import {downloadAndResize} from 'lib/media/manip'
import {POST_IMG_MAX} from 'lib/constants'
export interface TextInputRef {
focus: () => void
blur: () => void
}
interface TextInputProps extends ComponentProps<typeof RNTextInput> {
richtext: RichText
placeholder: string
suggestedLinks: Set<string>
autocompleteView: UserAutocompleteModel
setRichText: (v: RichText | ((v: RichText) => RichText)) => void
onPhotoPasted: (uri: string) => void
onPressPublish: (richtext: RichText) => Promise<void>
onSuggestedLinksChanged: (uris: Set<string>) => void
onError: (err: string) => void
}
interface Selection {
start: number
end: number
}
export const TextInput = forwardRef(
(
{
richtext,
placeholder,
suggestedLinks,
autocompleteView,
setRichText,
onPhotoPasted,
onSuggestedLinksChanged,
onError,
...props
}: TextInputProps,
ref,
) => {
const pal = usePalette('default')
const textInput = useRef<PasteInputRef>(null)
const textInputSelection = useRef<Selection>({start: 0, end: 0})
const theme = useTheme()
React.useImperativeHandle(ref, () => ({
focus: () => textInput.current?.focus(),
blur: () => {
textInput.current?.blur()
},
}))
const onChangeText = useCallback(
async (newText: string) => {
const newRt = new RichText({text: newText})
newRt.detectFacetsWithoutResolution()
setRichText(newRt)
const prefix = getMentionAt(
newText,
textInputSelection.current?.start || 0,
)
if (prefix) {
autocompleteView.setActive(true)
autocompleteView.setPrefix(prefix.value)
} else {
autocompleteView.setActive(false)
}
const set: Set<string> = new Set()
if (newRt.facets) {
for (const facet of newRt.facets) {
for (const feature of facet.features) {
if (AppBskyRichtextFacet.isLink(feature)) {
if (isUriImage(feature.uri)) {
const res = await downloadAndResize({
uri: feature.uri,
width: POST_IMG_MAX.width,
height: POST_IMG_MAX.height,
mode: 'contain',
maxSize: POST_IMG_MAX.size,
timeout: 15e3,
})
if (res !== undefined) {
onPhotoPasted(res.path)
}
} else {
set.add(feature.uri)
}
}
}
}
}
if (!isEqual(set, suggestedLinks)) {
onSuggestedLinksChanged(set)
}
},
[
setRichText,
autocompleteView,
suggestedLinks,
onSuggestedLinksChanged,
onPhotoPasted,
],
)
const onPaste = useCallback(
async (err: string | undefined, files: PastedFile[]) => {
if (err) {
return onError(cleanError(err))
}
const uris = files.map(f => f.uri)
const uri = uris.find(isUriImage)
if (uri) {
onPhotoPasted(uri)
}
},
[onError, onPhotoPasted],
)
const onSelectionChange = useCallback(
(evt: NativeSyntheticEvent<TextInputSelectionChangeEventData>) => {
// NOTE we track the input selection using a ref to avoid excessive renders -prf
textInputSelection.current = evt.nativeEvent.selection
},
[textInputSelection],
)
const onSelectAutocompleteItem = useCallback(
(item: string) => {
onChangeText(
insertMentionAt(
richtext.text,
textInputSelection.current?.start || 0,
item,
),
)
autocompleteView.setActive(false)
},
[onChangeText, richtext, autocompleteView],
)
const textDecorated = useMemo(() => {
let i = 0
return Array.from(richtext.segments()).map(segment => (
<Text
key={i++}
style={[
!segment.facet ? pal.text : pal.link,
styles.textInputFormatting,
]}>
{segment.text}
</Text>
))
}, [richtext, pal.link, pal.text])
return (
<View style={styles.container}>
<PasteInput
testID="composerTextInput"
ref={textInput}
onChangeText={onChangeText}
onPaste={onPaste}
onSelectionChange={onSelectionChange}
placeholder={placeholder}
placeholderTextColor={pal.colors.textLight}
keyboardAppearance={theme.colorScheme}
autoFocus={true}
multiline
style={[pal.text, styles.textInput, styles.textInputFormatting]}
{...props}>
{textDecorated}
</PasteInput>
<Autocomplete
view={autocompleteView}
onSelect={onSelectAutocompleteItem}
/>
</View>
)
},
)
const styles = StyleSheet.create({
container: {
flex: 1,
},
textInput: {
flex: 1,
width: '100%',
padding: 5,
paddingBottom: 20,
marginLeft: 8,
alignSelf: 'flex-start',
},
textInputFormatting: {
fontSize: 18,
letterSpacing: 0.2,
fontWeight: '400',
lineHeight: 23.4, // 1.3*16
},
})
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