Add child task support

src/database/migration/migrations/20201116-add-child-tasks.ts

@@ -0,0 +1,53 @@
+/*
+ * server component for the TimeLimit App
+ * Copyright (C) 2019 - 2020 Jonas Lochmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import { QueryInterface, Sequelize, Transaction } from 'sequelize'
+import { attributesVersion10 as categoryAttributes } from '../../category'
+
+export async function up (queryInterface: QueryInterface, sequelize: Sequelize) {
+  await sequelize.transaction({
+    type: Transaction.TYPES.EXCLUSIVE
+  }, async (transaction) => {
+    await sequelize.query(
+      'CREATE TABLE `ChildTasks` (' +
+      '`familyId` VARCHAR(10) NOT NULL, `taskId` VARCHAR(6) NOT NULL,' +
+      '`categoryId` VARCHAR(6) NOT NULL, `taskTitle` VARCHAR(50) NOT NULL,' +
+      '`extraTimeDuration` INTEGER NOT NULL, `pendingRequest` INTEGER NOT NULL,' +
+      '`lastGrantTimestamp` LONG NOT NULL,' +
+      'PRIMARY KEY(`familyId`, `taskId`),' +
+      'FOREIGN KEY(`familyId`, `categoryId`) REFERENCES `Categories`(`familyId`, `categoryId`) ' +
+      'ON UPDATE CASCADE ON DELETE CASCADE' +
+      ')',
+      { transaction }
+    )
+
+    await queryInterface.addColumn('Categories', 'taskListVersion', {
+      ...categoryAttributes.taskListVersion
+    }, {
+      transaction
+    })
+  })
+}
+
+export async function down (queryInterface: QueryInterface, sequelize: Sequelize) {
+  await sequelize.transaction({
+    type: Transaction.TYPES.EXCLUSIVE
+  }, async (transaction) => {
+    await queryInterface.dropTable('ChildTasks', { transaction })
+    await queryInterface.removeColumn('Categories', 'taskListVersion', { transaction })
+  })
+}