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App.tsx
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App.tsx
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import { useActionSheet } from '@expo/react-native-action-sheet'
import { Chat, MessageType } from '@flyerhq/react-native-chat-ui'
import { PreviewData } from '@flyerhq/react-native-link-preview'
import React, { useState } from 'react'
import DocumentPicker from 'react-native-document-picker'
import FileViewer from 'react-native-file-viewer'
import { launchImageLibrary } from 'react-native-image-picker'
import { v4 as uuidv4 } from 'uuid'
import data from './messages.json'
const App = () => {
const { showActionSheetWithOptions } = useActionSheet()
const [messages, setMessages] = useState(data as MessageType.Any[])
const user = { id: '06c33e8b-e835-4736-80f4-63f44b66666c' }
const addMessage = (message: MessageType.Any) => {
setMessages([message, ...messages])
}
const handleAttachmentPress = () => {
showActionSheetWithOptions(
{
options: ['Photo', 'File', 'Cancel'],
cancelButtonIndex: 2,
},
(buttonIndex) => {
switch (buttonIndex) {
case 0:
handleImageSelection()
break
case 1:
handleFileSelection()
break
}
}
)
}
const handleFileSelection = async () => {
try {
const response = await DocumentPicker.pickSingle({
type: [DocumentPicker.types.allFiles],
})
const fileMessage: MessageType.File = {
author: user,
createdAt: Date.now(),
id: uuidv4(),
mimeType: response.type ?? undefined,
name: response.name,
size: response.size ?? 0,
type: 'file',
uri: response.uri,
}
addMessage(fileMessage)
} catch {}
}
const handleImageSelection = () => {
launchImageLibrary(
{
includeBase64: true,
maxWidth: 1440,
mediaType: 'photo',
quality: 0.7,
},
({ assets }) => {
const response = assets?.[0]
if (response?.base64) {
const imageMessage: MessageType.Image = {
author: user,
createdAt: Date.now(),
height: response.height,
id: uuidv4(),
name: response.fileName ?? response.uri?.split('/').pop() ?? '🖼',
size: response.fileSize ?? 0,
type: 'image',
uri: `data:image/*;base64,${response.base64}`,
width: response.width,
}
addMessage(imageMessage)
}
}
)
}
const handleMessagePress = async (message: MessageType.Any) => {
if (message.type === 'file') {
try {
await FileViewer.open(message.uri, { showOpenWithDialog: true })
} catch {}
}
}
const handlePreviewDataFetched = ({
message,
previewData,
}: {
message: MessageType.Text
previewData: PreviewData
}) => {
setMessages(
messages.map<MessageType.Any>((m) =>
m.id === message.id ? { ...m, previewData } : m
)
)
}
const handleSendPress = (message: MessageType.PartialText) => {
const textMessage: MessageType.Text = {
author: user,
createdAt: Date.now(),
id: uuidv4(),
text: message.text,
type: 'text',
}
addMessage(textMessage)
}
return (
<Chat
messages={messages}
onAttachmentPress={handleAttachmentPress}
onMessagePress={handleMessagePress}
onPreviewDataFetched={handlePreviewDataFetched}
onSendPress={handleSendPress}
user={user}
/>
)
}
export default App