const should = require('should');
const sinon = require('sinon');

const configUtils = require('../../../utils/configUtils');
const labs = require('../../../../core/shared/labs');
const settingsCache = require('../../../../core/shared/settings-cache');

function expectedLabsObject(obj) {
    const withGA = Object.assign({}, obj);

    labs.GA_KEYS.forEach((key) => {
        withGA[key] = true;
    });

    return withGA;
}

describe('Labs Service', function () {
    afterEach(function () {
        sinon.restore();
        configUtils.restore();
    });

    it('can getAll, even if empty with enabled members', function () {
        labs.getAll().should.eql(expectedLabsObject({
            members: true
        }));
    });

    it('returns an alpha flag when dev experiments in toggled', function () {
        configUtils.set('enableDeveloperExperiments', true);
        sinon.stub(process.env, 'NODE_ENV').value('production');
        sinon.stub(settingsCache, 'get');
        settingsCache.get.withArgs('labs').returns({
            oauthLogin: true
        });

        // NOTE: this test should be rewritten to test the alpha flag independently of the internal ALPHA_FEATURES list
        //       otherwise we end up in the endless maintenance loop and need to update it every time a feature graduates from alpha
        labs.getAll().should.eql(expectedLabsObject({
            oauthLogin: true,
            members: true
        }));

        labs.isSet('members').should.be.true;
        labs.isSet('oauthLogin').should.be.true;
    });

    it('returns a falsy alpha flag when dev experiments in NOT toggled', function () {
        configUtils.set('enableDeveloperExperiments', false);
        sinon.stub(process.env, 'NODE_ENV').value('production');
        sinon.stub(settingsCache, 'get');
        settingsCache.get.withArgs('labs').returns({
            oauthLogin: true
        });

        // NOTE: this test should be rewritten to test the alpha flag independently of the internal ALPHA_FEATURES list
        //       otherwise we end up in the endless maintenance loop and need to update it every time a feature graduates from alpha
        labs.getAll().should.eql(expectedLabsObject({
            members: true
        }));

        labs.isSet('members').should.be.true;
        labs.isSet('oauthLogin').should.be.false;
    });

    it('members flag is true when members_signup_access setting is "all"', function () {
        sinon.stub(settingsCache, 'get');
        settingsCache.get.withArgs('members_signup_access').returns('all');

        labs.getAll().should.eql(expectedLabsObject({
            members: true
        }));

        labs.isSet('members').should.be.true;
    });

    it('returns other allowlisted flags along with members', function () {
        sinon.stub(settingsCache, 'get');
        settingsCache.get.withArgs('members_signup_access').returns('all');
        settingsCache.get.withArgs('labs').returns({
            activitypub: false
        });

        labs.getAll().should.eql(expectedLabsObject({
            members: true,
            activitypub: false
        }));

        labs.isSet('members').should.be.true;
        labs.isSet('activitypub').should.be.false;
    });

    it('members flag is false when members_signup_access setting is "none"', function () {
        sinon.stub(settingsCache, 'get');
        settingsCache.get.withArgs('members_signup_access').returns('none');

        labs.getAll().should.eql(expectedLabsObject({
            members: false
        }));

        labs.isSet('members').should.be.false;
    });

    it('isSet returns false for undefined', function () {
        labs.isSet('bar').should.be.false;
    });

    it('isSet always returns false for deprecated', function () {
        labs.isSet('subscribers').should.be.false;
        labs.isSet('publicAPI').should.be.false;
    });
});