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/// <reference path="../../node_modules/cypress/types/cypress-global-vars.d.ts" />

import {isValidAd} from '../motd.js';
import {ITestable} from './frontend-testing.interfaces.js';

import {Ad} from '../motd.interfaces.js';

class MotdTests implements ITestable {
    public readonly description: string = 'motd';

    private static assertAd(ad: Ad, subLang: string, expected: boolean, message: string) {
        if (isValidAd(ad, subLang) !== expected) {
            throw new Error(message);
        }
    }

    private static assertAdWithDateNow(dateNow: number, ad: Ad, subLang: string, expected: boolean, message: string) {
        const originalDateNow = Date.now;
        Date.now = () => dateNow;
        MotdTests.assertAd(ad, subLang, expected, message);
        Date.now = originalDateNow;
    }

    public async run() {
        MotdTests.assertAd(
            {
                filter: [],
                html: '',
            },
            'fakeLang',
            true,
            'Keep ad if sublang is not set',
        );

        MotdTests.assertAd(
            {
                filter: ['fakeLang'],
                html: '',
            },
            'langForTest',
            false,
            'Keep ad if sublang is not set even if filtering for lang',
        );

        MotdTests.assertAd(
            {
                filter: [],
                html: '',
            },
            'langForTest',
            true,
            'Keep ad if no lang is set',
        );

        MotdTests.assertAd(
            {
                filter: ['anotherLang'],
                html: '',
            },
            'langForTest',
            false,
            'Filters ad if not the correct language',
        );

        MotdTests.assertAd(
            {
                filter: ['langForTest'],
                html: '',
            },
            'langForTest',
            true,
            'Keep ad if the correct language is used',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: [],
                html: '',
                valid_from: '2022-01-01T00:00:00+00:00',
            },
            'langForTest',
            true,
            'Keep ad if now > from',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: [],
                html: '',
                valid_from: '2022-01-16T00:00:00+00:00',
            },
            'langForTest',
            false,
            'Filter ad if now < from',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: [],
                html: '',
                valid_until: '2022-01-16T00:00:00+00:00',
            },
            'langForTest',
            true,
            'Keep ad if now < until',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: [],
                html: '',
                valid_from: '2022-01-16T00:00:00+00:00',
            },
            'langForTest',
            false,
            'Filter ad if now > until',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: [],
                html: '',
                valid_from: '2022-01-01T00:00:00+00:00',
                valid_until: '2022-01-16T00:00:00+00:00',
            },
            'langForTest',
            true,
            'Keep ad if from < now < until',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: [],
                html: '',
                valid_from: '2022-01-10T00:00:00+00:00',
                valid_until: '2022-01-16T00:00:00+00:00',
            },
            'langForTest',
            false,
            'Filter ad if now < from < until',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-20T00:00:00+00:00'),
            {
                filter: [],
                html: '',
                valid_from: '2022-01-10T00:00:00+00:00',
                valid_until: '2022-01-16T00:00:00+00:00',
            },
            'langForTest',
            false,
            'Filter ad if from < until < now',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: [],
                html: '',
                valid_from: '2022-01-16T00:00:00+00:00',
                valid_until: '2022-01-10T00:00:00+00:00',
            },
            'langForTest',
            false,
            'Filter ad if until < now < from',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: ['fakeLang'],
                html: '',
                valid_from: '2022-01-01T00:00:00+00:00',
                valid_until: '2022-01-16T00:00:00+00:00',
            },
            'langForTest',
            false,
            'Filter ad if from < now < until but filtered by lang',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: ['langForTest'],
                html: '',
                valid_from: '2022-01-01T00:00:00+00:00',
                valid_until: '2022-01-16T00:00:00+00:00',
            },
            'langForTest',
            true,
            'Keep ad if from < now < until and not filtered by lang',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: ['langForTest'],
                html: '',
                valid_from: '2022-01-08T00:00:00+00:00',
                valid_until: '2022-01-16T00:00:00+00:00',
            },
            'langForTest',
            true,
            'Keep ad if from = now < until and not filtered by lang',
        );

        MotdTests.assertAdWithDateNow(
            Date.parse('2022-01-08T00:00:00+00:00'),
            {
                filter: ['langForTest'],
                html: '',
                valid_from: '2022-01-01T00:00:00+00:00',
                valid_until: '2022-01-18T00:00:00+00:00',
            },
            'langForTest',
            true,
            'Keep ad if from < now = until and not filtered by lang',
        );
    }
}

window.compilerExplorerFrontendTesting.add(new MotdTests());