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) => {
                // Spanner support only NO ACTION clause
                if (connection.driver.options.type === "spanner") return

                // 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([])
            }),
        ))
})