49 lines
1.1 KiB
TypeScript
49 lines
1.1 KiB
TypeScript
import type { MediaField } from '../interface';
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interface AssetProxyArgs {
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path: string;
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url?: string;
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file?: File;
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field?: MediaField;
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}
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export default class AssetProxy {
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url: string;
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fileObj?: File;
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path: string;
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field?: MediaField;
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constructor({ url, file, path, field }: AssetProxyArgs) {
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this.url = url ? url : file ? window.URL.createObjectURL(file as Blob) : '';
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this.fileObj = file;
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this.path = path;
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this.field = field;
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}
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toString(): string {
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return this.url;
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}
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async toBase64(): Promise<string> {
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const blob = await fetch(this.url).then(response => response.blob());
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if (blob.size <= 0) {
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return '';
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}
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const result = await new Promise<string>(resolve => {
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const fr = new FileReader();
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fr.onload = (readerEvt): void => {
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const binaryString = readerEvt.target?.result || '';
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resolve(binaryString.toString().split('base64,')[1]);
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};
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fr.readAsDataURL(blob);
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});
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return result;
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}
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}
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export function createAssetProxy({ url, file, path, field }: AssetProxyArgs): AssetProxy {
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return new AssetProxy({ url, file, path, field });
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}
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