fix: abstract and fix legacy fs (#4032)
David Luzar
3 years ago
committed by
GitHub
parent
75aeaa6c38
commit
54739cd2df
@ -0,0 +1,122 @@
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import {
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FileWithHandle,
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fileOpen as _fileOpen,
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fileSave as _fileSave,
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FileSystemHandle,
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supported as nativeFileSystemSupported,
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} from "@dwelle/browser-fs-access";
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import { EVENT, MIME_TYPES } from "../constants";
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import { AbortError } from "../errors";
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import { debounce } from "../utils";
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type FILE_EXTENSION =
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| "jpg"
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| "png"
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| "svg"
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| "json"
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| "excalidraw"
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| "excalidrawlib";
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const FILE_TYPE_TO_MIME_TYPE: Record<FILE_EXTENSION, string> = {
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jpg: "image/jpeg",
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png: "image/png",
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svg: "image/svg+xml",
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json: "application/json",
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excalidraw: MIME_TYPES.excalidraw,
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excalidrawlib: MIME_TYPES.excalidrawlib,
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};
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const INPUT_CHANGE_INTERVAL_MS = 500;
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export const fileOpen = <M extends boolean | undefined = false>(opts: {
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extensions?: FILE_EXTENSION[];
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description?: string;
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multiple?: M;
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}): Promise<
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M extends false | undefined ? FileWithHandle : FileWithHandle[]
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> => {
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// an unsafe TS hack, alas not much we can do AFAIK
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type RetType = M extends false | undefined
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? FileWithHandle
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: FileWithHandle[];
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const mimeTypes = opts.extensions?.reduce((mimeTypes, type) => {
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mimeTypes.push(FILE_TYPE_TO_MIME_TYPE[type]);
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return mimeTypes;
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}, [] as string[]);
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const extensions = opts.extensions?.reduce((acc, ext) => {
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if (ext === "jpg") {
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return acc.concat(".jpg", ".jpeg");
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}
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return acc.concat(`.${ext}`);
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}, [] as string[]);
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return _fileOpen({
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description: opts.description,
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extensions,
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mimeTypes,
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multiple: opts.multiple ?? false,
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legacySetup: (resolve, reject, input) => {
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const scheduleRejection = debounce(reject, INPUT_CHANGE_INTERVAL_MS);
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const focusHandler = () => {
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checkForFile();
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document.addEventListener(EVENT.KEYUP, scheduleRejection);
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document.addEventListener(EVENT.POINTER_UP, scheduleRejection);
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scheduleRejection();
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};
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const checkForFile = () => {
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// this hack might not work when expecting multiple files
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if (input.files?.length) {
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const ret = opts.multiple ? [...input.files] : input.files[0];
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resolve(ret as RetType);
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}
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};
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requestAnimationFrame(() => {
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window.addEventListener(EVENT.FOCUS, focusHandler);
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});
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const interval = window.setInterval(() => {
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checkForFile();
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}, INPUT_CHANGE_INTERVAL_MS);
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return (rejectPromise) => {
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clearInterval(interval);
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scheduleRejection.cancel();
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window.removeEventListener(EVENT.FOCUS, focusHandler);
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document.removeEventListener(EVENT.KEYUP, scheduleRejection);
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document.removeEventListener(EVENT.POINTER_UP, scheduleRejection);
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if (rejectPromise) {
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// so that something is shown in console if we need to debug this
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console.warn("Opening the file was canceled (legacy-fs).");
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rejectPromise(new AbortError());
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}
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};
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},
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}) as Promise<RetType>;
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};
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export const fileSave = (
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blob: Blob,
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opts: {
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/** supply without the extension */
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name: string;
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/** file extension */
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extension: FILE_EXTENSION;
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description?: string;
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/** existing FileSystemHandle */
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fileHandle?: FileSystemHandle | null;
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},
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) => {
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return _fileSave(
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blob,
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{
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fileName: `${opts.name}.${opts.extension}`,
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description: opts.description,
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extensions: [`.${opts.extension}`],
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},
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opts.fileHandle,
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);
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};
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export type { FileSystemHandle };
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export { nativeFileSystemSupported };
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