<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Integrations\Divi\Design;

use LIT\MCP\Integrations\Divi\Design\ThemeOptionBook;
use LIT\MCP\Integrations\Divi\Design\ThemeOptionDiff;
use PHPUnit\Framework\TestCase;

final class ThemeOptionDiffTest extends TestCase
{
    public function testNoChangeIsAnEmptyDiffEvenWhenTheOrderOfTheInputDiffers(): void
    {
        $book = ThemeOptionBook::fromDivi(ThemeOptionBookTest::stored());
        $same = ThemeOptionBook::fromDivi(array_reverse(ThemeOptionBookTest::stored(), true));

        self::assertSame([], ThemeOptionDiff::between($book, $same));
        self::assertSame([], ThemeOptionDiff::between(ThemeOptionBook::fromDivi([]), ThemeOptionBook::fromDivi([])));
    }

    public function testAddedChangedAndResetInTheOrderOfTheKeys(): void
    {
        $before = ThemeOptionBook::fromDivi(ThemeOptionBookTest::stored());
        $after = $before
            ->with('content_width', 1200)
            ->with('body_font_size', 18)
            ->with('body_font', 'Roboto')
            ->without('body_header_style');

        self::assertSame([
            ['key' => 'body_font', 'label' => 'Fließtext-Schrift', 'action' => 'changed',
                'before' => 'Lato', 'after' => 'Roboto'],
            ['key' => 'body_font_size', 'label' => 'Fließtext-Schriftgröße', 'action' => 'changed',
                'before' => 16, 'after' => 18],
            ['key' => 'body_header_style', 'label' => 'Überschrift-Schriftstil', 'action' => 'reset',
                'before' => 'uppercase', 'after' => null],
            ['key' => 'content_width', 'label' => 'Inhaltsbreite', 'action' => 'added',
                'before' => null, 'after' => 1200],
        ], ThemeOptionDiff::between($before, $after));
    }

    public function testFalseIsAValueOfItsOwn(): void
    {
        $unset = ThemeOptionBook::fromDivi([]);
        $default = ThemeOptionBook::fromDivi(['heading_font' => false]);
        $font = ThemeOptionBook::fromDivi(['heading_font' => 'Lato']);

        self::assertSame(
            [['key' => 'heading_font', 'label' => 'Überschrift-Schrift', 'action' => 'added',
                'before' => null, 'after' => false]],
            ThemeOptionDiff::between($unset, $default)
        );
        self::assertSame(
            [['key' => 'heading_font', 'label' => 'Überschrift-Schrift', 'action' => 'changed',
                'before' => false, 'after' => 'Lato']],
            ThemeOptionDiff::between($default, $font)
        );
        self::assertSame(
            [['key' => 'heading_font', 'label' => 'Überschrift-Schrift', 'action' => 'reset',
                'before' => false, 'after' => null]],
            ThemeOptionDiff::between($default, $unset)
        );
    }

    public function testATypeChangeCountsAsAChange(): void
    {
        $int = ThemeOptionBook::fromDivi(['gutter_width' => 1, 'body_header_height' => 1]);
        $text = ThemeOptionBook::fromDivi(['gutter_width' => '1', 'body_header_height' => 1.0]);

        self::assertSame(
            [
                ['key' => 'body_header_height', 'label' => 'Überschrift-Zeilenhöhe', 'action' => 'changed',
                    'before' => 1, 'after' => 1.0],
                ['key' => 'gutter_width', 'label' => 'Spaltenabstand', 'action' => 'changed',
                    'before' => 1, 'after' => '1'],
            ],
            ThemeOptionDiff::between($int, $text)
        );
    }

    public function testSummaryCountsPerAction(): void
    {
        $before = ThemeOptionBook::fromDivi(ThemeOptionBookTest::stored());
        $after = $before->with('content_width', 1200)->with('body_font_size', 18)->with('body_font', 'Roboto')
            ->without('body_header_style');

        self::assertSame(
            'Theme-Optionen: 1 gesetzt, 2 geändert, 1 zurückgesetzt.',
            ThemeOptionDiff::summary(ThemeOptionDiff::between($before, $after))
        );
        self::assertSame(
            'Theme-Optionen: 1 gesetzt.',
            ThemeOptionDiff::summary(ThemeOptionDiff::between(
                ThemeOptionBook::fromDivi([]),
                ThemeOptionBook::fromDivi(['content_width' => 1200])
            ))
        );
        self::assertSame('Theme-Optionen: keine Änderung.', ThemeOptionDiff::summary([]));
    }
}