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56 lines
1.7 KiB
JavaScript
56 lines
1.7 KiB
JavaScript
const Message = require('../../types/message');
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exports.run = async (transaction) => {
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const messagesStore = transaction.objectStore('messages');
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console.log('Initialize messages schema version');
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const numUpgradedMessages = await _initializeMessageSchemaVersion(messagesStore);
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console.log('Complete messages schema version initialization', { numUpgradedMessages });
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console.log('Create index from attachment schema version to attachment');
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messagesStore.createIndex('schemaVersion', 'schemaVersion', { unique: false });
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};
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const _initializeMessageSchemaVersion = messagesStore =>
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new Promise((resolve, reject) => {
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const messagePutOperations = [];
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const cursorRequest = messagesStore.openCursor();
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cursorRequest.onsuccess = async (event) => {
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const cursor = event.target.result;
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const hasMoreData = Boolean(cursor);
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if (!hasMoreData) {
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await Promise.all(messagePutOperations);
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return resolve(messagePutOperations.length);
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}
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const message = cursor.value;
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const messageWithSchemaVersion = Message.initializeSchemaVersion(message);
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messagePutOperations.push(putItem(
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messagesStore,
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messageWithSchemaVersion,
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messageWithSchemaVersion.id
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));
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return cursor.continue();
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};
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cursorRequest.onerror = event =>
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reject(event.target.error);
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});
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// putItem :: IDBObjectStore -> Item -> Key -> Promise Item
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const putItem = (store, item, key) =>
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new Promise((resolve, reject) => {
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try {
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const request = store.put(item, key);
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request.onsuccess = event =>
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resolve(event.target.result);
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request.onerror = event =>
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reject(event.target.error);
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} catch (error) {
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reject(error);
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}
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});
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