<?php

declare(strict_types=1);

use App\Dto\IcsContentDto;
use App\Services\IcsGeneratorService;
use Illuminate\Support\Carbon;

covers(IcsGeneratorService::class);

describe('IcsGeneratorService', function (): void {
    it('throws exception if app name is empty', function (): void {
        // GIVEN
        $appName = '';

        // WHEN
        $action = fn (): IcsGeneratorService => new IcsGeneratorService($appName);

        // THEN
        expect($action)->toThrow(\InvalidArgumentException::class, 'App name must be provided for ICS generation.');
    });

    it('generates ics format without url', function (): void {
        // GIVEN
        $service = new IcsGeneratorService('MyApp');
        $dto     = new IcsContentDto(
            uid: 'uid-123',
            summary: 'My Event, with comma',
            description: "Line 1\nLine 2;",
            startsAt: Carbon::parse('2026-06-11 10:00:00'),
            endsAt: Carbon::parse('2026-06-11 11:00:00'),
            url: null,
        );

        Carbon::setTestNow('2026-06-11 09:00:00');

        // WHEN
        $ics = $service->generate($dto);

        // THEN
        expect($ics)
            ->toContain('BEGIN:VCALENDAR')
            ->toContain('PRODID:-//MyApp//NONSGML v1.0//EN')
            ->toContain('UID:uid-123')
            ->toContain('DTSTAMP:20260611T090000Z')
            ->toContain('DTSTART:20260611T100000Z')
            ->toContain('DTEND:20260611T110000Z')
            ->toContain('SUMMARY:My Event\, with comma')
            ->toContain('DESCRIPTION:Line 1\nLine 2\;')
            ->not->toContain('URL:');

        Carbon::setTestNow();
    });

    it('generates ics format with url', function (): void {
        // GIVEN
        $service = new IcsGeneratorService('MyApp');
        $dto     = new IcsContentDto(
            uid: 'uid-123',
            summary: 'Event',
            description: 'Desc',
            startsAt: Carbon::parse('2026-06-11 10:00:00'),
            endsAt: Carbon::parse('2026-06-11 11:00:00'),
            url: 'http://example.com',
        );

        // WHEN
        $ics = $service->generate($dto);

        // THEN
        expect($ics)->toContain('URL:http://example.com');
    });
});