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';
import * as helpers from './helpers';

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

describe('POST /song/query with no songs', () => {
    it('should give empty list', done => {
        init().then((app) => {
            chai
                .request(app)
                .post('/song/query')
                .send({
                    'query': {}
                })
                .end((err, res) => {
                    expect(err).to.be.null;
                    expect(res).to.have.status(200);
                    expect(res.body).to.deep.equal({
                        ids: []
                    });
                });
        })
        .then(done);
    });
});

describe('POST /song/query with several songs and filters', () => {
    it('should give all correct results', done => {
        init().then((app) => {
            async function checkAllSongs(req) {
                await req
                    .post('/song/query')
                    .send({ "query": {} })
                    .then((res) => {
                        expect(res).to.have.status(200);
                        expect(res.body).to.deep.equal({
                            ids: [1, 2, 3]
                        });
                    });
            }

            async function checkIdIn(req) {
                await req
                    .post('/song/query')
                    .send({
                        "query": {
                            "prop": "id",
                            "propOperator": "IN",
                            "propOperand": [1, 3, 5]
                        }
                    })
                    .then((res) => {
                        expect(res).to.have.status(200);
                        expect(res.body).to.deep.equal({
                            ids: [1, 3]
                        });
                    });
            }

            async function checkIdNotIn(req) {
                await req
                    .post('/song/query')
                    .send({
                        "query": {
                            "prop": "id",
                            "propOperator": "NOTIN",
                            "propOperand": [1, 3, 5]
                        }
                    })
                    .then((res) => {
                        expect(res).to.have.status(200);
                        expect(res.body).to.deep.equal({
                            ids: [2]
                        });
                    });
            }

            async function checkArtistIdIn(req) {
                await req
                    .post('/song/query')
                    .send({
                        "query": {
                            "prop": "artistIds",
                            "propOperator": "IN",
                            "propOperand": [1]
                        }
                    })
                    .then((res) => {
                        expect(res).to.have.status(200);
                        expect(res.body).to.deep.equal({
                            ids: [1, 2]
                        });
                    });
            }

            async function checkOrRelation(req) {
                await req
                    .post('/song/query')
                    .send({
                        "query": {
                            "childrenOperator": "OR",
                            "children": [
                                {
                                    "prop": "artistIds",
                                    "propOperator": "IN",
                                    "propOperand": [2]
                                },
                                {
                                    "prop": "id",
                                    "propOperator": "EQ",
                                    "propOperand": 1
                                }
                            ]
                        }
                    })
                    .then((res) => {
                        expect(res).to.have.status(200);
                        expect(res.body).to.deep.equal({
                            ids: [1, 3]
                        });
                    });
            }

            var req = chai.request(app).keepOpen();

            helpers.createArtist(req, { name: "Artist1" }, 200)
                .then(() => helpers.createArtist(req, { name: "Artist2" }, 200))
                .then(() => helpers.createSong(req, { title: "Song1", artistIds: [1] }, 200))
                .then(() => helpers.createSong(req, { title: "Song2", artistIds: [1] }, 200))
                .then(() => helpers.createSong(req, { title: "Song3", artistIds: [2] }, 200))
                .then(() => checkAllSongs(req))
                .then(() => checkIdIn(req))
                .then(() => checkIdNotIn(req))
                .then(() => checkArtistIdIn(req))
                .then(() => checkOrRelation(req))
                .then(req.close)
                .then(done)
        })
    });
});