44 lines
1.4 KiB
TypeScript
44 lines
1.4 KiB
TypeScript
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import { loadLibraryFromBlob } from "./blob";
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import { LibraryItems, LibraryItem } from "../types";
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import { loadLibrary, saveLibrary } from "./localStorage";
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export class Library {
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/** imports library (currently merges, removing duplicates) */
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static async importLibrary(blob: any) {
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const libraryFile = await loadLibraryFromBlob(blob);
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if (!libraryFile || !libraryFile.library) {
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return;
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}
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/**
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* checks if library item does not exist already in current library
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*/
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const isUniqueitem = (
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existingLibraryItems: LibraryItems,
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targetLibraryItem: LibraryItem,
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) => {
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return !existingLibraryItems.find((libraryItem) => {
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if (libraryItem.length !== targetLibraryItem.length) {
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return false;
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}
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// detect z-index difference by checking the excalidraw elements
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// are in order
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return libraryItem.every((libItemExcalidrawItem, idx) => {
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return (
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libItemExcalidrawItem.id === targetLibraryItem[idx].id &&
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libItemExcalidrawItem.versionNonce ===
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targetLibraryItem[idx].versionNonce
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);
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});
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});
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};
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const existingLibraryItems = await loadLibrary();
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const filtered = libraryFile.library!.filter((libraryItem) =>
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isUniqueitem(existingLibraryItems, libraryItem),
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);
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saveLibrary([...existingLibraryItems, ...filtered]);
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}
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}
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