// Switch these lines once there are useful utils
// const testUtils = require('./utils');
require('./utils');
const UrlHistory = require('../lib/history');
const AttributionBuilder = require('../lib/attribution');

describe('AttributionBuilder', function () {
    let attributionBuilder;

    before(function () {
        attributionBuilder = new AttributionBuilder({
            urlTranslator: {
                getTypeAndId(path) {
                    if (path === '/my-post') {
                        return {
                            id: 123,
                            type: 'post'
                        };
                    }
                    if (path === '/my-page') {
                        return {
                            id: 845,
                            type: 'page'
                        };
                    }
                    return;
                }
            }
        });
    });

    it('Returns empty if empty history', function () {
        const history = new UrlHistory([]);
        should(attributionBuilder.getAttribution(history)).eql({id: null, type: null, url: null});
    });

    it('Returns last url', function () {
        const history = new UrlHistory([{path: '/not-last', time: 123}, {path: '/test', time: 123}]);
        should(attributionBuilder.getAttribution(history)).eql({type: 'url', id: null, url: '/test'});
    });

    it('Returns last post', function () {
        const history = new UrlHistory([
            {path: '/my-post', time: 123}, 
            {path: '/test', time: 124},
            {path: '/unknown-page', time: 125}
        ]);
        should(attributionBuilder.getAttribution(history)).eql({type: 'post', id: 123, url: '/my-post'});
    });

    it('Returns last post even when it found pages', function () {
        const history = new UrlHistory([
            {path: '/my-post', time: 123}, 
            {path: '/my-page', time: 124}, 
            {path: '/unknown-page', time: 125}
        ]);
        should(attributionBuilder.getAttribution(history)).eql({type: 'post', id: 123, url: '/my-post'});
    });

    it('Returns last page if no posts', function () {
        const history = new UrlHistory([
            {path: '/other', time: 123}, 
            {path: '/my-page', time: 124}, 
            {path: '/unknown-page', time: 125}
        ]);
        should(attributionBuilder.getAttribution(history)).eql({type: 'page', id: 845, url: '/my-page'});
    });

    it('Returns all null for invalid histories', function () {
        const history = new UrlHistory('invalid');
        should(attributionBuilder.getAttribution(history)).eql({
            type: null,
            id: null,
            url: null
        });
    });

    it('Returns all null for empty histories', function () {
        const history = new UrlHistory([]);
        should(attributionBuilder.getAttribution(history)).eql({
            type: null,
            id: null,
            url: null
        });
    });
});