62 lines
1.6 KiB
JavaScript
62 lines
1.6 KiB
JavaScript
import IPFS from 'ipfs'
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import fileReaderPullStream from 'pull-file-reader'
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import { Matcher } from '@areknawo/rex'
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import { getImageType } from './images'
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const ipfsMatcher = new Matcher().begin().find('ipfs/')
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const ipfs = new IPFS()
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export const isIpfs = str => ipfsMatcher.test(str)
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export const captureFile = (event, cb, imgCb) => {
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event.stopPropagation()
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event.preventDefault()
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const file = event.target.files[0]
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saveToIpfs(file, cb, imgCb)
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}
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const formatForIpfs = file => {
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const { name, type } = file
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const content = fileReaderPullStream(file)
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return [{
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path: `/root/${name}`,
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content
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}]
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}
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const saveToIpfs = (file, cb, imgCb) => {
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let ipfsId
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ipfs.add(formatForIpfs(file), { progress: (prog) => console.log(`received: ${prog}`) })
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.then((response) => {
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console.log(response)
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ipfsId = response[0].hash
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cb(`ipfs/${ipfsId}`)
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getImageFromIpfs(ipfsId, imgCb)
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}).catch((err) => {
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console.error(err)
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})
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}
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export const getImageFromIpfs = async (hash, cb) => {
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const res = await getFromIpfs(hash)
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cb(res)
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};
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export const getFromIpfs = async hash => {
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const files = await getFile(hash)
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const file = files.slice(-1)[0]
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const { content } = file
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const arrayBufferView = new Uint8Array(content)
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const blob = new Blob([ arrayBufferView ], { type: getImageType(file) })
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const img = URL.createObjectURL(blob)
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return { ...file, img }
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}
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export const getFile = CID => {
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const clean = CID.split('/').slice(-1)[0]
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return new Promise(function(resolve, reject) {
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ipfs.get(clean, function (err, files) {
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if (err) reject(err)
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else resolve(files)
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})
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})
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}
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