Handle key constraints in roles on delete

api/src/services/roles.ts

@@ -1,8 +1,56 @@
 import ItemsService from './items';
-import { AbstractServiceOptions } from '../types';
+import { AbstractServiceOptions, PrimaryKey } from '../types';
+import PermissionsService from './permissions';
+import UsersService from './users';
+import PresetsService from './presets';
 
 export default class RolesService extends ItemsService {
 	constructor(options?: AbstractServiceOptions) {
 		super('directus_roles', options);
 	}
+
+	delete(key: PrimaryKey): Promise<PrimaryKey>;
+	delete(keys: PrimaryKey[]): Promise<PrimaryKey[]>;
+	async delete(key: PrimaryKey | PrimaryKey[]): Promise<PrimaryKey | PrimaryKey[]> {
+		const keys = Array.isArray(key) ? key : [key];
+
+		// Remove all permissions associated with this role
+		const permissionsService = new PermissionsService({
+			knex: this.knex,
+			accountability: this.accountability,
+		});
+		const permissionsForRole = await permissionsService.readByQuery({
+			fields: ['id'],
+			filter: { role: { _in: keys } },
+		});
+		const permissionIDs = permissionsForRole.map((permission) => permission.id);
+		await permissionsService.delete(permissionIDs);
+
+		// Remove all presets that are attached to this role
+		const presetsService = new PresetsService({
+			knex: this.knex,
+			accountability: this.accountability,
+		});
+		const presetsForRole = await presetsService.readByQuery({
+			fields: ['id'],
+			filter: { role: { _in: keys } },
+		});
+		const presetIDs = presetsForRole.map((preset) => preset.id);
+		await presetsService.delete(presetIDs);
+
+		// Nullify role for users in this role
+		const usersService = new UsersService({
+			knex: this.knex,
+			accountability: this.accountability,
+		});
+		const usersInRole = await usersService.readByQuery({
+			fields: ['id'],
+			filter: { role: { _in: keys } },
+		});
+		const userIDs = usersInRole.map((user) => user.id);
+		await usersService.update({ status: 'suspended', role: null }, userIDs);
+
+		await super.delete(key as any);
+		return key;
+	}
 }