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import { SW } from "./init.ts"
// export function StreamDownload(size: number, filename?: string, progress?: (position: number) => void) {
// let position = 0
// const buffer = new Uint8Array(size)
// return {
// close() {
// const a = document.createElement("a")
// a.href = URL.createObjectURL(new Blob([buffer], { type: "text/plain" }))
// a.download = filename ?? "file"
// a.click()
// },
// write(chunk: Blob) {
// const reader = new FileReader();
// reader.onload = function (event) {
// const arr = new Uint8Array(event.target!.result as ArrayBuffer);
// for (let i = 0; i < arr.length; i++, position++) {
// buffer[position] = arr[i]
// }
// if (progress) progress(position)
// };
// reader.readAsArrayBuffer(chunk);
// }
// }
// }
export function StreamDownload(size: number, filename?: string, progress?: (position: number) => void) {
let position = 0
const path = `/download/${encodeURIComponent(filename ?? "file")}`
const { port1, port2 } = new MessageChannel()
SW!.postMessage({ path, size }, [port2])
const a = document.createElement("a")
a.href = path
a.download = filename ?? "file"
a.target = "_blank"
a.click()
return {
close() {
port1.postMessage("end")
},
write(chunk: Blob) {
const reader = new FileReader();
reader.onload = function (event) {
const arr = new Uint8Array(event.target!.result as ArrayBuffer);
port1.postMessage(arr)
position += arr.length
if (progress) progress(position)
};
reader.readAsArrayBuffer(chunk);
}
}
}
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