import 'reflect-metadata';
import {
	closeTestingConnections,
	createTestingConnections,
	reloadTestingDatabases,
} from '../../utils/test-utils';
import { DataSource } from '../../../src/data-source/DataSource';
import { Post } from './entity/Post';
import { expect } from 'chai';
import { Category } from './entity/Category';

describe('github issues > #70 cascade deleting works incorrect', () => {
	let connections: DataSource[];
	before(
		async () =>
			(connections = await createTestingConnections({
				entities: [__dirname + '/entity/*{.js,.ts}'],
			})),
	);
	beforeEach(() => reloadTestingDatabases(connections));
	after(() => closeTestingConnections(connections));

	it('should persist successfully and return persisted entity', () =>
		Promise.all(
			connections.map(async (connection) => {
				// create objects to save
				const category1 = new Category();
				category1.name = 'category #1';

				const category2 = new Category();
				category2.name = 'category #2';

				const post = new Post();
				post.title = 'Hello Post #1';
				post.categories = [category1, category2];

				// persist post (other are persisted by cascades)
				await connection.manager.save(post);

				// check that all persisted objects exist
				const loadedPost = await connection.manager
					.createQueryBuilder(Post, 'post')
					.innerJoinAndSelect('post.categories', 'category')
					.orderBy('post.id, category.id')
					.getOne();

				const loadedCategories = await connection.manager
					.createQueryBuilder(Category, 'category')
					.orderBy('category.id')
					.getMany();

				expect(loadedPost!).not.to.be.null;
				loadedPost!.should.deep.include({
					id: 1,
					title: 'Hello Post #1',
				});
				loadedPost!.categories.length.should.be.equal(2);

				expect(loadedCategories).not.to.be.undefined;
				loadedCategories[0].id.should.be.equal(1);
				loadedCategories[1].id.should.be.equal(2);

				// now remove post. categories should be removed too
				await connection.manager.remove(post);

				// load them again to make sure they are not exist anymore
				const loadedPosts2 = await connection.manager.createQueryBuilder(Post, 'post').getMany();

				const loadedCategories2 = await connection.manager
					.createQueryBuilder(Category, 'category')
					.getMany();

				expect(loadedPosts2).to.be.eql([]);
				expect(loadedCategories2).to.be.eql([]);
			}),
		));
});