feat(auth): add user and role management

packages/backend/src/db/migrations/20230615205857_create_permissions.ts

@@ -1,23 +1,46 @@
 import { Knex } from 'knex';
 
-const getPermission = (subject: string, actions: string[]) => actions.map(action => ({ subject, action }));
+const getPermissionForRole = (roleId: string, subject: string, actions: string[], conditions: string[] = []) => actions
+  .map(action => ({
+    role_id: roleId,
+    subject,
+    action,
+    conditions,
+  }));
 
 export async function up(knex: Knex): Promise<void> {
   await knex.schema.createTable('permissions', (table) => {
     table.uuid('id').primary().defaultTo(knex.raw('gen_random_uuid()'));
+    table.uuid('role_id').references('id').inTable('roles');
     table.string('action').notNullable();
     table.string('subject').notNullable();
+    table.jsonb('conditions').notNullable().defaultTo([]);
 
     table.timestamps(true, true);
   });
 
-  await knex('permissions').insert([
-    ...getPermission('Connection', ['create', 'read', 'delete', 'update']),
-    ...getPermission('Execution', ['read']),
-    ...getPermission('Flow', ['create', 'delete', 'publish', 'read', 'update']),
-    ...getPermission('Role', ['create', 'delete', 'read', 'update']),
-    ...getPermission('User', ['create', 'delete', 'read', 'update']),
-  ]);
+  const roles = await knex('roles').select(['id', 'key']) as { id: string, key: string }[];
+
+  for (const role of roles) {
+    // `admin` role should have no conditions unlike others by default
+    const isAdmin = role.key === 'admin';
+    const roleConditions = isAdmin ? [] : ['isCreator'];
+
+    // default permissions
+    await knex('permissions').insert([
+      ...getPermissionForRole(role.id, 'Connection', ['create', 'read', 'delete', 'update'], roleConditions),
+      ...getPermissionForRole(role.id, 'Execution', ['read'], roleConditions),
+      ...getPermissionForRole(role.id, 'Flow', ['create', 'delete', 'publish', 'read', 'update'], roleConditions),
+    ]);
+
+    // admin specific permission
+    if (isAdmin) {
+      await knex('permissions').insert([
+        ...getPermissionForRole(role.id, 'User', ['create', 'read', 'delete', 'update']),
+        ...getPermissionForRole(role.id, 'Role', ['create', 'read', 'delete', 'update']),
+      ]);
+    }
+  }
 }
 
 export async function down(knex: Knex): Promise<void> {