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import Compressor from 'compressorjs';
import axios from 'axios';
import Bluebird from 'bluebird';
import { get } from '../requests';
interface ProgressEvent {
loaded: number;
total: number;
}
const compressFile = (file: File, quality = 0.6): Promise<File | Blob> => {
return new Promise((resolve, reject) => {
if (quality === 1) resolve(file);
else return new Compressor(file, {
success: result => resolve(result),
error: err => reject(err),
quality
});
});
};
export default (
file: File,
quality?: number,
setProgress?: (progress: number) => void
): Promise<string> => {
const onUploadProgress = (progressEvent: ProgressEvent): void => {
if (setProgress) {
// Only allow upload progress reach 95%, and set 100% when request is resolved
const progress = Math.round((progressEvent.loaded * 95) / progressEvent.total);
setProgress(progress);
}
};
const config = {
headers: { 'Content-Type': 'image/png' },
onUploadProgress
};
// Indicate start
if (setProgress) setProgress(0.01);
// Add querystring to avoid caching request in some browsers, see
// https://stackoverflow.com/questions/59339561/safari-skipping-xmlhttprequests
return Bluebird.all([get(`/files?key=${file.name}`), compressFile(file, quality)])
.then(([response, compressedFile]) => {
const uploadUrl = response.data;
return axios.put(uploadUrl, compressedFile, config);
})
.then(response => {
if (setProgress) setProgress(100);
const uri = response.config.url;
return uri ? uri.slice(0, uri.indexOf('?')) : '';
});
};
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