/* jshint expr:true */
/* global md5 */
import {expect} from 'chai';
import {describe, it} from 'mocha';
import {setupComponentTest} from 'ember-mocha';
import hbs from 'htmlbars-inline-precompile';
import Service from 'ember-service';
import run from 'ember-runloop';
import Pretender from 'pretender';
import wait from 'ember-test-helpers/wait';

let pathsStub = Service.extend({
    url: {
        api() {
            return '';
        },
        asset(src) {
            return src;
        }
    }
});

const stubKnownGravatar = function (server) {
    server.get('http://www.gravatar.com/avatar/:md5', function () {
        return [200, {'Content-Type': 'image/png'}, ''];
    });
};

const stubUnknownGravatar = function (server) {
    server.get('http://www.gravatar.com/avatar/:md5', function () {
        return [404, {}, ''];
    });
};

describe('Integration: Component: gh-profile-image', function () {
    setupComponentTest('gh-profile-image', {
        integration: true
    });

    let server;

    beforeEach(function () {
        this.register('service:ghost-paths', pathsStub);
        this.inject.service('ghost-paths', {as: 'ghost-paths'});

        server = new Pretender();
        stubKnownGravatar(server);
    });

    afterEach(function () {
        server.shutdown();
    });

    it('renders', function () {
        this.set('email', '');

        this.render(hbs`
            {{gh-profile-image email=email}}
        `);

        expect(this.$()).to.have.length(1);
    });

    it('renders default image if no email supplied', function () {
        this.set('email', null);

        this.render(hbs`
            {{gh-profile-image email=email size=100 debounce=50}}
        `);

        expect(this.$('.gravatar-img').attr('style'), 'gravatar image style')
            .to.be.blank;
    });

    it('renders the gravatar if valid email supplied', function (done) {
        let email = 'test@example.com';
        let expectedUrl = `//www.gravatar.com/avatar/${md5(email)}?s=100&d=404`;

        this.set('email', email);

        this.render(hbs`
            {{gh-profile-image email=email size=100 debounce=50}}
        `);

        // wait for the ajax request to complete
        wait().then(() => {
            expect(this.$('.gravatar-img').attr('style'), 'gravatar image style')
                .to.equal(`background-image: url(${expectedUrl})`);
            done();
        });
    });

    it('doesn\'t add background url if gravatar image doesn\'t exist', function (done) {
        stubUnknownGravatar(server);

        this.render(hbs`
            {{gh-profile-image email="test@example.com" size=100 debounce=50}}
        `);

        wait().then(() => {
            expect(this.$('.gravatar-img').attr('style'), 'gravatar image style')
                .to.be.blank;
            done();
        });
    });

    it('throttles gravatar loading as email is changed', function (done) {
        let email = 'test@example.com';
        let expectedUrl = `//www.gravatar.com/avatar/${md5(email)}?s=100&d=404`;

        this.set('email', 'test');

        this.render(hbs`
            {{gh-profile-image email=email size=100 debounce=300}}
        `);

        run(() => {
            this.set('email', email);
        });

        expect(this.$('.gravatar-img').attr('style'), '.gravatar-img background not immediately changed on email change')
            .to.be.blank;

        run.later(this, function () {
            expect(this.$('.gravatar-img').attr('style'), '.gravatar-img background still not changed before debounce timeout')
                .to.be.blank;
        }, 250);

        run.later(this, function () {
            expect(this.$('.gravatar-img').attr('style'), '.gravatar-img background changed after debounce timeout')
                .to.equal(`background-image: url(${expectedUrl})`);
            done();
        }, 400);
    });
});