const chai = require('chai');
const chaiHttp = require('chai-http');
const express = require('express');
const models = require('../../../models');
import { SetupApp } from '../../../app';
import { expect } from 'chai';

async function init() {
    chai.use(chaiHttp);
    const app = express();
    SetupApp(app);
    await models.sequelize.sync({ force: true });
    return app;
}

describe('POST /song with no title', () => {
    it('should fail', done => {
        init().then((app) => {
            chai
                .request(app)
                .post('/song')
                .send({})
                .end((err, res) => {
                    expect(err).to.be.null;
                    expect(res).to.have.status(400);
                    done();
                });
        });
    });
});

describe('POST /song with only a title', () => {
    it('should return the first available id', done => {
        init().then((app) => {
            chai
                .request(app)
                .post('/song')
                .send({
                    title: "MySong"
                })
                .end((err, res) => {
                    expect(err).to.be.null;
                    expect(res).to.have.status(200);
                    expect(res.body).to.deep.equal({
                        id: 1
                    });
                    done();
                });
        })
    });
});

describe('POST /song with a nonexistent artist Id', () => {
    it('should fail', done => {
        init().then((app) => {
            chai
                .request(app)
                .post('/song')
                .send({
                    title: "MySong",
                    artistIds: [1]
                })
                .end((err, res) => {
                    expect(err).to.be.null;
                    expect(res).to.have.status(400);
                    done();
                });
        })
    });
});

describe('POST /song with an existing artist Id', () => {
    it('should succeed', done => {
        init().then((app) => {
            async function createArtist() {
                await chai.request(app)
                    .post('/artist')
                    .send({
                        name: "MyArtist"
                    })
                    .then((res) => {
                        expect(res).to.have.status(200);
                        expect(res.body).to.deep.equal({
                            id: 1
                        });
                    });
            }

            async function createSong() {
                chai.request(app)
                    .post('/song')
                    .send({
                        title: "MySong",
                        artistIds: [1]
                    })
                    .then((res) => {
                        expect(res).to.have.status(200);
                        expect(res.body).to.deep.equal({
                            id: 1
                        });
                    });
            }

            init()
                .then(createArtist)
                .then(createSong)
                .then(done);
        });
    });
});

describe('POST /song with two existing artist Ids', () => {
    it('should succeed', done => {
        init().then((app) => {
            async function createArtist(name, expectId) {
                await chai.request(app)
                    .post('/artist')
                    .send({
                        name: name
                    })
                    .then((res) => {
                        expect(res).to.have.status(200);
                        expect(res.body).to.deep.equal({
                            id: expectId
                        });
                    });
            }

            async function createSong() {
                chai.request(app)
                    .post('/song')
                    .send({
                        title: "MySong",
                        artistIds: [1, 2]
                    })
                    .then((res) => {
                        expect(res).to.have.status(200);
                        expect(res.body).to.deep.equal({
                            id: 1
                        });
                    });
            }

            init()
                .then(() => { createArtist('Artist1', 1); })
                .then(() => { createArtist('Artist2', 2); })
                .then(createSong)
                .then(done);
        });
    });
});

describe('POST /song with an existent and a nonexistent artist Id', () => {
    it('should fail', done => {
        init().then((app) => {
            async function createArtist(name, expectId) {
                await chai.request(app)
                    .post('/artist')
                    .send({
                        name: name
                    })
                    .then((res) => {
                        expect(res).to.have.status(200);
                        expect(res.body).to.deep.equal({
                            id: expectId
                        });
                    });
            }

            async function createSong() {
                chai.request(app)
                    .post('/song')
                    .send({
                        title: "MySong",
                        artistIds: [1, 2]
                    })
                    .then((res) => {
                        expect(res).to.have.status(400);
                    });
            }

            init()
                .then(() => { createArtist('Artist1', 1); })
                .then(createSong)
                .then(done);
        });
    });
});

export { };