84 lines
1.9 KiB
JavaScript
84 lines
1.9 KiB
JavaScript
const form = document.getElementById("userform")
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const submit = document.getElementById("submit")
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const results = document.getElementById("results")
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const chunksize = 1000000;
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const splitter = (file, hash) => {
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let numberofChunks = Math.ceil(file.byteLength/chunksize);
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let left = 0
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let chunks = []
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for (let i = 0; i < numberofChunks; i++) {
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const chunkForm = new FormData();
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let contentRange = "";
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let chunk;
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if(left+chunksize <= file.byteLength){
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contentRange = `${left}-${left+chunksize}`
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chunk = file.slice(left,left+chunksize)
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left += chunksize
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} else {
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contentRange = `${left}-${file.byteLength}`
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chunk = file.slice(left,file.byteLength)
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}
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chunkForm.append('file', new Blob([chunk], {type:"video/webm"}))
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chunks.push(
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fetch("/test", {
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method: "POST",
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headers: {
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"Content-Number": i,
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"Content-Range": `bytes ${contentRange}/${file.byteLength}`,
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"File-Hash": hash
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},
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body: chunkForm
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}))
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}
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return chunks
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}
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async function digest(data){
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const hash = await crypto.subtle.digest("SHA-256", data);
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return hash
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}
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const processFile = file => {
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const fr = new FileReader()
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fr.readAsArrayBuffer(file)
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fr.addEventListener("loadend", e => {
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digest(e.target.result).then(digestBuffer => {
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const hashAsString = Array.from(new Uint8Array(digestBuffer)).map((b) => b.toString(16).padStart(2, "0")).join(""); // hex the buffer for readability
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Promise.all(splitter(e.target.result,hashAsString))
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.then((values) => {
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fetch(`/finish`, {
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method: "POST",
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headers: {
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"Content-Type": "json",
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},
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body: JSON.stringify({"hash": hashAsString, "type": file.type})
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})
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})
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})
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})
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}
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submit.addEventListener("click", e => {
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e.preventDefault();
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let fd = new FormData();
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for (const file of form.media.files){
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processFile(file)
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fd.append('file', file)
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console.log(file)
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}
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}) |