'use strict';

const supertest = require('supertest');
const { EventEmitter } = require('events');
const { createTestConfig } = require('../../../test/config/test-config');
const store = require('../../../test/fixtures/store');
const permissions = require('../../../test/fixtures/permissions');
const getLogger = require('../../../test/fixtures/no-logger');
const getApp = require('../../app');
const { createServices } = require('../../services');

const eventBus = new EventEmitter();
let request;
let destroy;
let strategyStore;
let base;

function getSetup(databaseIsUp = true) {
    const randomBase = `/random${Math.round(Math.random() * 1000)}`;
    const perms = permissions();
    const stores = store.createStores(databaseIsUp);
    const config = createTestConfig({
        server: { baseUriPath: randomBase },
        preRouterHook: perms.hook,
    });
    const services = createServices(stores, config);
    const app = getApp(config, stores, services, eventBus);

    return {
        base: randomBase,
        strategyStore: stores.strategyStore,
        request: supertest(app),
        perms,
        destroy: () => {
            services.versionService.destroy();
            services.clientMetricsService.destroy();
            services.apiTokenService.destroy();
        },
    };
}

beforeEach(() => {
    const setup = getSetup();
    request = setup.request;
    base = setup.base;
    strategyStore = setup.strategyStore;
    destroy = setup.destroy;
});
afterEach(() => {
    destroy();
});

afterEach(() => {
    getLogger.setMuteError(false);
});

test('add version numbers for /stategies', () => {
    expect.assertions(1);
    return request
        .get(`${base}/api/admin/strategies`)
        .expect('Content-Type', /json/)
        .expect(200)
        .expect(res => {
            expect(res.body.version).toBe(1);
        });
});

test('require a name when creating a new strategy', () => {
    expect.assertions(1);
    return request
        .post(`${base}/api/admin/strategies`)
        .send({})
        .expect(400)
        .expect(res => {
            expect(res.body.details[0].message === '"name" is required').toBe(
                true,
            );
        });
});

test('require parameters array when creating a new stratey', () => {
    expect.assertions(1);

    return request
        .post(`${base}/api/admin/strategies`)
        .send({ name: 'TestStrat' })
        .expect(400)
        .expect(res => {
            expect(res.body.details[0].message).toEqual(
                '"parameters" is required',
            );
        });
});

test('create a new strategy with empty parameters', async () => {
    expect.assertions(0);
    return request
        .post(`${base}/api/admin/strategies`)
        .send({ name: 'TestStrat', parameters: [] })
        .expect(201);
});

test('not be possible to override name', () => {
    expect.assertions(0);
    strategyStore.createStrategy({ name: 'Testing', parameters: [] });

    return request
        .post(`${base}/api/admin/strategies`)
        .send({ name: 'Testing', parameters: [] })
        .expect(409);
});

test('update strategy', () => {
    expect.assertions(0);
    const name = 'AnotherStrat';
    strategyStore.createStrategy({ name, parameters: [] });

    return request
        .put(`${base}/api/admin/strategies/${name}`)
        .send({ name, parameters: [], description: 'added' })
        .expect(200);
});

test('not update unknown strategy', () => {
    expect.assertions(0);
    const name = 'UnknownStrat';
    return request
        .put(`${base}/api/admin/strategies/${name}`)
        .send({ name, parameters: [], description: 'added' })
        .expect(404);
});

test('validate format when updating strategy', () => {
    expect.assertions(0);
    const name = 'AnotherStrat';
    strategyStore.createStrategy({ name, parameters: [] });

    return request
        .put(`${base}/api/admin/strategies/${name}`)
        .send({})
        .expect(400);
});

test('editable=false will stop delete request', () => {
    getLogger.setMuteError(true);
    expect.assertions(0);
    const name = 'default';
    return request.delete(`${base}/api/admin/strategies/${name}`).expect(500);
});

test('editable=false will stop edit request', () => {
    getLogger.setMuteError(true);
    expect.assertions(0);
    const name = 'default';
    return request
        .put(`${base}/api/admin/strategies/${name}`)
        .send({ name, parameters: [] })
        .expect(500);
});

test('editable=true will allow delete request', () => {
    expect.assertions(0);
    const name = 'deleteStrat';
    strategyStore.createStrategy({ name, parameters: [] });

    return request
        .delete(`${base}/api/admin/strategies/${name}`)
        .send({})
        .expect(200);
});

test('editable=true will allow edit request', () => {
    expect.assertions(0);
    const name = 'editStrat';
    strategyStore.createStrategy({ name, parameters: [] });

    return request
        .put(`${base}/api/admin/strategies/${name}`)
        .send({ name, parameters: [] })
        .expect(200);
});

test('deprecating a strategy works', async () => {
    expect.assertions(1);
    const name = 'editStrat';
    strategyStore.createStrategy({ name, parameters: [] });

    await request
        .post(`${base}/api/admin/strategies/${name}/deprecate`)
        .set('Content-Type', 'application/json')
        .send()
        .expect(200);
    return request
        .get(`${base}/api/admin/strategies/${name}`)
        .expect(200)
        .expect(res => expect(res.body.deprecated).toBe(true));
});

test('deprecating a non-existent strategy yields 404', () => {
    expect.assertions(0);
    return request
        .post(`${base}/api/admin/strategies/non-existent-strategy/deprecate`)
        .set('Content-Type', 'application/json')
        .expect(404);
});

test('reactivating a strategy works', async () => {
    expect.assertions(1);
    const name = 'editStrat';
    strategyStore.createStrategy({ name, parameters: [] });

    await request
        .post(`${base}/api/admin/strategies/${name}/reactivate`)
        .set('Content-Type', 'application/json')
        .send()
        .expect(200);
    return request
        .get(`${base}/api/admin/strategies/${name}`)
        .expect(200)
        .expect(res => expect(res.body.deprecated).toBe(false));
});

test('reactivating a non-existent strategy yields 404', () => {
    expect.assertions(0);
    return request
        .post(`${base}/api/admin/strategies/non-existent-strategy/reactivate`)
        .set('Content-Type', 'application/json')
        .expect(404);
});
test("deprecating 'default' strategy will yield 403", () => {
    expect.assertions(0);
    return request
        .post(`${base}/api/admin/strategies/default/deprecate`)
        .set('Content-Type', 'application/json')
        .expect(403);
});

test('Getting strategies while database is down should yield 500', async () => {
    expect.assertions(0);
    // eslint-disable-next-line @typescript-eslint/no-shadow
    const { request, base, destroy } = getSetup(false);
    await request.get(`${base}/api/admin/strategies`).expect(500);
    destroy();
});