97 lines
3.7 KiB
JavaScript
97 lines
3.7 KiB
JavaScript
export const DB_NAME = 'CanvasNodeDB';
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export const DB_VERSION = 3;
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export const STATE_STORE_NAME = 'CanvasState';
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export const IMAGE_STORE_NAME = 'CanvasImages';
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export const STATE_STORE = {
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name: STATE_STORE_NAME,
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keyPath: 'id',
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};
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export const IMAGE_STORE = {
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name: IMAGE_STORE_NAME,
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keyPath: 'imageId',
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};
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export const ALL_STORES = [STATE_STORE, IMAGE_STORE];
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let db = null;
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/** Create an IndexedDB request with shared operation and error handling. */
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export function createDBRequest(store, operation, data, errorMessage, log) {
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return new Promise((resolve, reject) => {
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let request;
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switch (operation) {
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case 'get':
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request = store.get(data);
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break;
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case 'put':
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request = store.put(data);
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break;
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case 'delete':
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request = store.delete(data);
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break;
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case 'clear':
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request = store.clear();
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break;
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case 'getAllKeys':
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request = store.getAllKeys();
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break;
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default:
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reject(new Error(`Unknown operation: ${operation}`));
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return;
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}
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request.onerror = (event) => {
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const error = event.target.error ?? new Error(errorMessage);
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log.error(errorMessage, error);
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reject(error);
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};
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request.onsuccess = (event) => {
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resolve(event.target.result);
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};
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});
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}
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/** Open the shared database, execute one store operation, and preserve request error handling. */
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export async function executeDBStoreRequest(log, stores, storeDefinition, mode, operation, data, errorMessage, openOptions = {}) {
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const database = await openLayerForgeDB(log, stores, openOptions);
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const transaction = database.transaction([storeDefinition.name], mode);
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const store = transaction.objectStore(storeDefinition.name);
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return createDBRequest(store, operation, data, errorMessage, log);
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}
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/** Open the shared LayerForge database and create only the stores needed by the caller. */
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export function openLayerForgeDB(log, stores, options = {}) {
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return new Promise((resolve, reject) => {
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if (db) {
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resolve(db);
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return;
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}
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const openingMessage = options.openingMessage === undefined
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? 'Opening IndexedDB...'
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: options.openingMessage;
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const upgradingMessage = options.upgradingMessage ?? 'Upgrading IndexedDB...';
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const successMessage = options.successMessage ?? 'IndexedDB opened successfully.';
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const logStoreCreation = options.logStoreCreation ?? true;
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if (openingMessage) {
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log.info(openingMessage);
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}
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const request = indexedDB.open(DB_NAME, DB_VERSION);
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request.onerror = (event) => {
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const error = event.target.error ?? new Error('Error opening IndexedDB.');
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log.error('IndexedDB error:', error);
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reject(error);
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};
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request.onsuccess = (event) => {
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db = event.target.result;
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log.info(successMessage);
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resolve(db);
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};
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request.onupgradeneeded = (event) => {
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log.info(upgradingMessage);
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const dbInstance = event.target.result;
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for (const store of stores) {
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if (!dbInstance.objectStoreNames.contains(store.name)) {
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dbInstance.createObjectStore(store.name, { keyPath: store.keyPath });
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if (logStoreCreation) {
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log.info('Object store created:', store.name);
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}
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}
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}
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};
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});
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}
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