<?php

declare(strict_types=1);

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

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

final class ThemeOptionBookTest extends TestCase
{
    /** @return array<string, mixed> The shape of get_option('et_divi') with the options of other areas around. */
    public static function stored(): array
    {
        return [
            'accent_color' => '#2ea3f2',
            'body_font_size' => 16,
            'heading_font' => false,
            'logo' => 'https://example.test/logo.png',
            'body_font_height' => 1.7,
            'body_header_style' => 'uppercase',
            'body_font' => 'Lato',
        ];
    }

    public function testOnlyWhitelistKeysStayInTheFixedOrderWithTheirRawTypes(): void
    {
        $book = ThemeOptionBook::fromDivi(self::stored());

        self::assertSame([
            'heading_font' => false,
            'body_font' => 'Lato',
            'body_font_size' => 16,
            'body_font_height' => 1.7,
            'body_header_style' => 'uppercase',
        ], $book->data());
        self::assertSame(['heading_font', 'body_font', 'body_font_size', 'body_font_height', 'body_header_style'],
            array_keys($book->data()));
    }

    public function testNullAndValuesOfOtherTypesAreDropped(): void
    {
        $book = ThemeOptionBook::fromDivi([
            'heading_font' => null, 'body_font' => ['Lato'], 'content_width' => true, 'row_padding' => 0,
            'gutter_width' => '3', 'section_padding' => 0.0, 'body_header_spacing' => new \stdClass(),
        ]);

        self::assertSame(['gutter_width' => '3', 'section_padding' => 0.0, 'row_padding' => 0], $book->data());
        self::assertSame([], ThemeOptionBook::fromDivi([])->data());
    }

    public function testHasAndGetDistinguishAFalseValueFromAMissingKey(): void
    {
        $book = ThemeOptionBook::fromDivi(self::stored());

        self::assertTrue($book->has('heading_font'));
        self::assertFalse($book->get('heading_font'));
        self::assertFalse($book->has('primary_nav_font'));
        self::assertNull($book->get('primary_nav_font'));
        self::assertFalse($book->has('logo'));
        self::assertNull($book->get('logo'));
        self::assertSame(16, $book->get('body_font_size'));
    }

    public function testRevIgnoresTheOrderAndOtherKeysButNotValuesOrTheirTypes(): void
    {
        $book = ThemeOptionBook::fromDivi(self::stored());
        $shuffled = ThemeOptionBook::fromDivi(array_reverse(self::stored(), true) + ['phone_body_font_size' => null]);

        self::assertMatchesRegularExpression('/^[0-9a-f]{12}$/', $book->rev());
        self::assertSame($book->rev(), $shuffled->rev());
        self::assertSame($book->rev(), ThemeOptionBook::fromDivi($book->data())->rev());
        self::assertNotSame($book->rev(), $book->with('body_font_size', 17)->rev());
        self::assertNotSame($book->rev(), $book->with('body_font_size', '16')->rev(), '16 versus "16"');
        self::assertNotSame($book->rev(), $book->with('heading_font', 'Lato')->rev(), 'false versus a font');
        self::assertNotSame($book->rev(), $book->without('body_font_size')->rev());
        self::assertNotSame(
            ThemeOptionBook::fromDivi(['body_header_height' => 1])->rev(),
            ThemeOptionBook::fromDivi(['body_header_height' => 1.0])->rev(),
            '1 versus 1.0'
        );
        self::assertNotSame($book->rev(), ThemeOptionBook::fromDivi([])->rev());
    }

    public function testWithAddsOrReplacesInPlaceOfTheFixedOrderAndLeavesTheOriginalAlone(): void
    {
        $book = ThemeOptionBook::fromDivi(self::stored());
        $changed = $book->with('primary_nav_font', 'Roboto')->with('body_font_size', 18);

        self::assertSame(['heading_font', 'body_font', 'primary_nav_font', 'body_font_size', 'body_font_height',
            'body_header_style'], array_keys($changed->data()));
        self::assertSame(18, $changed->get('body_font_size'));
        self::assertSame(16, $book->get('body_font_size'));
        self::assertFalse($book->has('primary_nav_font'));
        self::assertFalse($book->with('body_font', false)->get('body_font'));
    }

    public function testWithRejectsAKeyOutsideTheWhitelist(): void
    {
        $this->expectException(InvalidArgumentException::class);
        ThemeOptionBook::fromDivi([])->with('accent_color', '#fff');
    }

    public function testWithoutRemovesAKeyAndIgnoresAMissingOne(): void
    {
        $book = ThemeOptionBook::fromDivi(self::stored());
        $without = $book->without('heading_font');

        self::assertFalse($without->has('heading_font'));
        self::assertTrue($book->has('heading_font'));
        self::assertSame($book->rev(), $book->without('row_padding')->rev());
        self::assertSame($book->data(), $book->without('logo')->data());
    }
}