Remove all IndexedDB migration code

js/database.js

@@ -1,14 +1,9 @@
-/* global _: false */
-/* global Backbone: false */
-
 /* global Whisper: false */
 
 // eslint-disable-next-line func-names
 (function() {
   'use strict';
 
-  const { getPlaceholderMigrations } = window.Signal.Migrations;
-
   window.Whisper = window.Whisper || {};
   window.Whisper.Database = window.Whisper.Database || {};
   window.Whisper.Database.id = window.Whisper.Database.id || 'signal';
@@ -23,108 +18,4 @@
     );
     reject(error || new Error(prefix));
   };
-
-  function clearStores(db, names) {
-    return new Promise((resolve, reject) => {
-      const storeNames = names || db.objectStoreNames;
-      window.log.info('Clearing these indexeddb stores:', storeNames);
-      const transaction = db.transaction(storeNames, 'readwrite');
-
-      let finished = false;
-      const finish = via => {
-        window.log.info('clearing all stores done via', via);
-        if (finished) {
-          resolve();
-        }
-        finished = true;
-      };
-
-      transaction.oncomplete = finish.bind(null, 'transaction complete');
-      transaction.onerror = () => {
-        Whisper.Database.handleDOMException(
-          'clearStores transaction error',
-          transaction.error,
-          reject
-        );
-      };
-
-      let count = 0;
-
-      // can't use built-in .forEach because db.objectStoreNames is not a plain array
-      _.forEach(storeNames, storeName => {
-        const store = transaction.objectStore(storeName);
-        const request = store.clear();
-
-        request.onsuccess = () => {
-          count += 1;
-          window.log.info('Done clearing store', storeName);
-
-          if (count >= storeNames.length) {
-            window.log.info('Done clearing indexeddb stores');
-            finish('clears complete');
-          }
-        };
-
-        request.onerror = () => {
-          Whisper.Database.handleDOMException(
-            'clearStores request error',
-            request.error,
-            reject
-          );
-        };
-      });
-    });
-  }
-
-  Whisper.Database.open = () => {
-    const { migrations } = Whisper.Database;
-    const { version } = migrations[migrations.length - 1];
-    const DBOpenRequest = window.indexedDB.open(Whisper.Database.id, version);
-
-    return new Promise((resolve, reject) => {
-      // these two event handlers act on the IDBDatabase object,
-      // when the database is opened successfully, or not
-      DBOpenRequest.onerror = reject;
-      DBOpenRequest.onsuccess = () => resolve(DBOpenRequest.result);
-
-      // This event handles the event whereby a new version of
-      // the database needs to be created Either one has not
-      // been created before, or a new version number has been
-      // submitted via the window.indexedDB.open line above
-      DBOpenRequest.onupgradeneeded = reject;
-    });
-  };
-
-  Whisper.Database.clear = async () => {
-    const db = await Whisper.Database.open();
-    await clearStores(db);
-    db.close();
-  };
-
-  Whisper.Database.clearStores = async storeNames => {
-    const db = await Whisper.Database.open();
-    await clearStores(db, storeNames);
-    db.close();
-  };
-
-  Whisper.Database.close = () => window.wrapDeferred(Backbone.sync('closeall'));
-
-  Whisper.Database.drop = () =>
-    new Promise((resolve, reject) => {
-      const request = window.indexedDB.deleteDatabase(Whisper.Database.id);
-
-      request.onblocked = () => {
-        reject(new Error('Error deleting database: Blocked.'));
-      };
-      request.onupgradeneeded = () => {
-        reject(new Error('Error deleting database: Upgrade needed.'));
-      };
-      request.onerror = () => {
-        reject(new Error('Error deleting database.'));
-      };
-
-      request.onsuccess = resolve;
-    });
-
-  Whisper.Database.migrations = getPlaceholderMigrations();
 })();