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/**
* Upload files in chunks
* Based on: https://github.com/deliciousbrains/wp-dbi-file-uploader
*/
export default function ({ file, path, onProgress, onComplete, onError }) {
let reader = {};
let chunk = 0;
let cancelled = false;
// get max upload size, max out at 16mb chunks
const max_request_size = Math.min(
prestoPlayerAdmin.wp_max_upload_size - 1000000,
15900000
);
let slice_size = Math.max(max_request_size, 1900000); // ~2MB fallback as minimum
slice_size = Math.min(slice_size, 104857600); // make the max size 100MB
// export percent done
let percent_done;
// chunk upload
const chunkUpload = function () {
chunk = 0;
reader = new FileReader();
upload_file(0);
return this;
};
// upload file
const upload_file = async (start) => {
const next_slice = start + slice_size + 1;
const blob = file.slice(start, next_slice);
const chunks = Math.ceil(file.size / (slice_size + 1));
chunk++;
onProgress((chunk / chunks) * 100);
const body = new FormData();
body.append("file", blob);
body.append("name", file.name);
body.append("chunk", chunk);
body.append("chunks", chunks);
try {
const file_url = await wp.apiFetch({
path,
method: "POST",
body,
});
if (cancelled) {
console.log("cancelled");
return;
}
if (next_slice < file.size) {
onProgress(percent_done);
upload_file(next_slice);
} else {
onComplete(file_url);
}
} catch (e) {
onError(e);
console.error(e);
}
};
chunkUpload();
return {
cancel: () => {
cancelled = true;
},
};
}