68 lines
2 KiB
JavaScript
68 lines
2 KiB
JavaScript
/* eslint-env browser */
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const isFunction = require('lodash/isFunction');
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const isObject = require('lodash/isObject');
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const isString = require('lodash/isString');
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const head = require('lodash/head');
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const last = require('lodash/last');
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const db = require('../database');
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const { deferredToPromise } = require('../deferred_to_promise');
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const closeDatabaseConnection = ({ Backbone } = {}) =>
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deferredToPromise(Backbone.sync('closeall'));
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exports.runMigrations = async ({ Backbone, database } = {}) => {
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if (!isObject(Backbone) || !isObject(Backbone.Collection) ||
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!isFunction(Backbone.Collection.extend)) {
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throw new TypeError('"Backbone" is required');
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}
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if (!isObject(database) || !isString(database.id) ||
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!Array.isArray(database.migrations)) {
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throw new TypeError('"database" is required');
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}
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const {
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firstVersion: firstMigrationVersion,
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lastVersion: lastMigrationVersion,
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} = getMigrationVersions(database);
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const databaseVersion = await db.getVersion(database.id);
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const isAlreadyUpgraded = databaseVersion >= lastMigrationVersion;
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console.log('Database state', {
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firstMigrationVersion,
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lastMigrationVersion,
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databaseVersion,
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isAlreadyUpgraded,
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});
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if (isAlreadyUpgraded) {
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return;
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}
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const migrationCollection = new (Backbone.Collection.extend({
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database,
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storeName: 'items',
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}))();
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await deferredToPromise(migrationCollection.fetch({ limit: 1 }));
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console.log('Close database connection');
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await closeDatabaseConnection({ Backbone });
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};
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const getMigrationVersions = (database) => {
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if (!isObject(database) || !Array.isArray(database.migrations)) {
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throw new TypeError('"database" is required');
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}
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const firstMigration = head(database.migrations);
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const lastMigration = last(database.migrations);
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const firstVersion = firstMigration ? parseInt(firstMigration.version, 10) : null;
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const lastVersion = lastMigration ? parseInt(lastMigration.version, 10) : null;
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return { firstVersion, lastVersion };
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};
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