katja's git: oeffisearch

dataStorage: rename database, remove unnecessary db-migrations

diff --git a/src/dataStorage.js b/src/dataStorage.js
@@ -2,100 +2,21 @@ import { openDB, deleteDB } from 'idb';
 
 export let db;
 
-const dbName = !isDevServer ? 'trainsearch' : 'trainsearch_dev';
+const dbName = !isDevServer ? 'oeffisearch' : 'oeffisearch_dev';
 
 class DataStorage {
 	constructor(idb) { this.idb = idb; }
 
 	static async open() {
-		const idb = await openDB(dbName, 3, {
+		const idb = await openDB(dbName, 1, {
 			upgrade: async (db, oldVersion, newVersion, transaction) => {
 				console.log(`upgrading database from ${oldVersion} to ${newVersion}`);
 
-				let settings;
-
 				switch (oldVersion) {
 					case 0:
-						/*
-						 * in database scheme v1, the `journeys` object store stores whole searches, including journey data
-						 */
-						db.createObjectStore('journeys', {keyPath: 'slug'});
-						db.createObjectStore('journeysHistory', {autoIncrement: true});
-						db.createObjectStore('settings');
-
-					case 1:
-						/*
-						 * in database scheme v2, there are the following data stores:
-						 * `journey` for storing individual journeys with their refreshToken as index
-						 * `journeysOverview`t contains the search results with the `.journeys` field being an array of refreshTokens.
-						 *
-						 * in comparison to v1, there are these additional changes:
-						 * `journeys` object store is deleted.
-						 * `journeysHistory` object store is cleared/recreated.
-						 */
-
-						/* clean up old stuff */
-						db.deleteObjectStore('journeys');
-						db.deleteObjectStore('journeysHistory');
-
-						/* create new stores */
-						db.createObjectStore('journey', {keyPath: 'refreshToken'});
-						db.createObjectStore('journeysOverview', {keyPath: 'slug'});
-						db.createObjectStore('journeysHistory', {autoIncrement: true});
-
-					case 2:
-						settings = await transaction.objectStore('settings').get('settings');
-
-						if (settings !== undefined && settings.profile === 'vbb') {
-							settings.profile = 'db';
-						}
-
-						await transaction.objectStore('settings').put(settings, 'settings');
-
-					case 3:
-						settings = await transaction.objectStore('settings').get('settings');
-
-						if (settings !== undefined && settings.bikeFriendly === undefined) {
-							settings.bikeFriendly = false;
-						}
-
-						await transaction.objectStore('settings').put(settings, 'settings');
-
-					case 4:
-						settings = await transaction.objectStore('settings').get('settings');
-
-						if (settings !== undefined && settings.loyaltyCard === undefined) {
-							settings.loyaltyCard = 'NONE';
-						}
-
-						await transaction.objectStore('settings').put(settings, 'settings');
-
-					case 5:
-						settings = await transaction.objectStore('settings').get('settings');
-
-						if (settings !== undefined && settings.walkingSpeed === undefined) {
-							settings.walkingSpeed = 'normal';
-						}
-
-						await transaction.objectStore('settings').put(settings, 'settings');
-
-					case 5:
-						settings = await transaction.objectStore('settings').get('settings');
-
-						if (settings !== undefined && settings.ageGroup === undefined) {
-							settings.ageGroup = 'E';
-						}
-
-						await transaction.objectStore('settings').put(settings, 'settings');
-
-					case 6:
-						settings = await transaction.objectStore('settings').get('settings');
-
-						if (settings !== undefined && settings.profile === 'vrn') {
-							settings.profile = 'db';
-						}
-
-						await transaction.objectStore('settings').put(settings, 'settings');
+						db.createObjectStore('journey',          { keyPath: 'refreshToken' });
+						db.createObjectStore('journeysOverview', { keyPath: 'slug' });
+						db.createObjectStore('journeysHistory',  { autoIncrement: true });
 				}
 			}
 		});