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import RNFetchBlob from 'rn-fetch-blob'
import ImageResizer from '@bam.tech/react-native-image-resizer'
interface DownloadAndResizeOpts {
uri: string
width: number
height: number
mode: 'contain' | 'cover' | 'stretch'
timeout: number
}
export async function downloadAndResize(opts: DownloadAndResizeOpts) {
let appendExt
try {
const urip = new URL(opts.uri)
const ext = urip.pathname.split('.').pop()
if (ext === 'jpg' || ext === 'jpeg') {
appendExt = 'jpeg'
} else if (ext === 'png') {
appendExt = 'png'
} else {
return
}
} catch (e: any) {
console.error('Invalid URI', opts.uri, e)
return
}
let downloadRes
try {
const downloadResPromise = RNFetchBlob.config({
fileCache: true,
appendExt,
}).fetch('GET', opts.uri)
const to1 = setTimeout(() => downloadResPromise.cancel(), opts.timeout)
downloadRes = await downloadResPromise
clearTimeout(to1)
let localUri = downloadRes.path()
if (!localUri.startsWith('file://')) {
localUri = `file://${localUri}`
}
const resizeRes = await ImageResizer.createResizedImage(
localUri,
opts.width,
opts.height,
'JPEG',
0.7,
undefined,
undefined,
undefined,
{mode: opts.mode},
)
return resizeRes
} finally {
if (downloadRes) {
downloadRes.flush()
}
}
}
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