Kysely - WIP

* create database migration files
* kysely codegen
* kysely migrate

apps/server/src/kysely/migrations/20240324T085800-group_users.ts

@@ -0,0 +1,56 @@
+import { Kysely, sql } from 'kysely';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .createTable('group_users')
+    .addColumn('id', 'uuid', (col) =>
+      col.primaryKey().defaultTo(sql`gen_random_uuid()`),
+    )
+    .addColumn('userId', 'uuid', (col) => col.notNull())
+    .addColumn('groupId', 'uuid', (col) => col.notNull())
+    .addColumn('createdAt', 'timestamp', (col) =>
+      col.notNull().defaultTo(sql`now()`),
+    )
+    .addColumn('updatedAt', 'timestamp', (col) =>
+      col.notNull().defaultTo(sql`now()`),
+    )
+    .addUniqueConstraint('UQ_group_users_groupId_userId', ['groupId', 'userId'])
+    .execute();
+
+  // foreign key relations
+  await db.schema
+    .alterTable('group_users')
+    .addForeignKeyConstraint(
+      'FK_group_users_users_userId',
+      ['userId'],
+      'users',
+      ['id'],
+    )
+    .onDelete('cascade')
+    .execute();
+
+  await db.schema
+    .alterTable('group_users')
+    .addForeignKeyConstraint(
+      'FK_group_users_groups_groupId',
+      ['groupId'],
+      'groups',
+      ['id'],
+    )
+    .onDelete('cascade')
+    .execute();
+}
+
+export async function down(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .alterTable('group_users')
+    .dropConstraint('FK_group_users_users_userId')
+    .execute();
+
+  await db.schema
+    .alterTable('group_users')
+    .dropConstraint('FK_group_users_groups_groupId')
+    .execute();
+
+  await db.schema.dropTable('group_users').execute();
+}