<?php

declare(strict_types=1);

namespace Tests;

use PHPUnit\Framework\TestCase;

require_once __DIR__ . '/../includes/Ui.php';

/**
 * Sehr einfache Datenbank-Attrappe: liefert nur Einstellungen zurueck.
 */
class FakeSettings
{
    /** @var array<string, string> */
    private array $values;

    /** @param array<string, string> $values */
    public function __construct(array $values = [])
    {
        $this->values = $values;
    }

    public function getSetting(string $key, $default = null)
    {
        return $this->values[$key] ?? $default;
    }
}

class UiTest extends TestCase
{
    public function testAssetUrlCarriesVersionStamp(): void
    {
        $url = \Ui::asset('assets/global.css');

        $this->assertStringStartsWith('assets/global.css?v=', $url);
        $this->assertMatchesRegularExpression('/\?v=\d+$/', $url);
    }

    public function testAssetUrlRespectsBasePath(): void
    {
        $this->assertStringStartsWith('../assets/global.css?v=', \Ui::asset('assets/global.css', '../'));
    }

    public function testBrandingStyleIsEmptyForDefaults(): void
    {
        $db = new FakeSettings([
            'brand_accent' => \Ui::DEFAULT_ACCENT,
            'brand_accent_dark' => \Ui::DEFAULT_ACCENT_DARK,
            'brand_gradient_from' => \Ui::DEFAULT_GRADIENT_FROM,
            'brand_gradient_to' => \Ui::DEFAULT_GRADIENT_TO,
            'brand_radius' => (string)\Ui::DEFAULT_RADIUS,
        ]);

        $this->assertSame('', \Ui::brandingStyle($db));
        $this->assertSame('', \Ui::brandingStyle(null));
    }

    public function testBrandingStyleUsesCustomColour(): void
    {
        $style = \Ui::brandingStyle(new FakeSettings(['brand_accent' => '#0F766E']));

        $this->assertStringContainsString('--accent:#0f766e', $style);
        $this->assertStringContainsString('[data-theme="dark"]', $style);
    }

    public function testBrandingStyleIgnoresInvalidColour(): void
    {
        $style = \Ui::brandingStyle(new FakeSettings(['brand_accent' => 'rot; background:url(x)']));

        $this->assertSame('', $style, 'Ungueltige Farben duerfen keinen Override erzeugen');
    }

    public function testBrandingRadiusIsClamped(): void
    {
        $style = \Ui::brandingStyle(new FakeSettings(['brand_radius' => '999']));

        $this->assertStringContainsString('--r-lg:28px', $style);
    }

    public function testMediaUrlKeepsAbsoluteAddresses(): void
    {
        $this->assertSame('https://cdn.example.com/logo.svg', \Ui::mediaUrl('https://cdn.example.com/logo.svg', '../'));
        $this->assertSame('/logo.svg', \Ui::mediaUrl('/logo.svg', '../'));
        $this->assertSame('', \Ui::mediaUrl('', '../'));
    }

    public function testMediaUrlPrefixesUploads(): void
    {
        $this->assertSame('../uploads/logo.png', \Ui::mediaUrl('uploads/logo.png', '../'));
    }
}