<?php

namespace WPContentSync\Tests\Unit\Url;

use PHPUnit\Framework\TestCase;
use WPContentSync\Url\MetadataUrlTransformer;
use WPContentSync\Url\UrlMapping;
use WPContentSync\Url\UrlMappingCollection;
use WPContentSync\Url\UrlTransformer;

class MetadataUrlTransformerTest extends TestCase {
	private function mappings(): UrlMappingCollection {
		return new UrlMappingCollection(
			array(
				new UrlMapping( 'https://example.test', 'https://staging.example.test' ),
			)
		);
	}

	public function test_it_recursively_transforms_array_metadata(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );

		self::assertSame(
			array(
				'hero'  => array(
					'url' => 'https://staging.example.test/uploads/hero.jpg',
				),
				'count' => 3,
				'flag'  => true,
			),
			$transformer->transformValue(
				array(
					'hero'  => array(
						'url' => 'https://example.test/uploads/hero.jpg',
					),
					'count' => 3,
					'flag'  => true,
				),
				$this->mappings()
			)
		);
	}

	public function test_it_transforms_json_strings(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );
		$result      = $transformer->transformValue(
			'{"url":"https:\/\/example.test\/uploads\/hero.jpg"}',
			$this->mappings()
		);

		self::assertSame( '{"url":"https:\/\/staging.example.test\/uploads\/hero.jpg"}', $result );
	}

	public function test_it_preserves_serialized_data_validity(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );
		// phpcs:ignore -- Test fixture requires native serialized metadata.
		$serialized  = serialize(
			array(
				'url' => 'https://example.test/uploads/hero.jpg',
			)
		);

		$result = $transformer->transformValue( $serialized, $this->mappings() );

		self::assertSame(
			array(
				'url' => 'https://staging.example.test/uploads/hero.jpg',
			),
			// phpcs:ignore -- Assertion verifies the transformed serialized metadata remains valid.
			unserialize( $result )
		);
	}

	public function test_it_leaves_invalid_serialized_strings_unchanged(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );
		$value       = 'a:1:{s:3:"url";s:37:"https://example.test/uploads/hero.jpg";} trailing';

		self::assertSame( $value, $transformer->transformValue( $value, $this->mappings() ) );
	}

	public function test_it_leaves_whitespace_wrapped_serialized_strings_unchanged(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );
		// phpcs:ignore -- Test fixture requires native serialized metadata.
		$value       = ' ' . serialize( array( 'url' => 'https://example.test/uploads/hero.jpg' ) ) . ' ';

		self::assertSame( $value, $transformer->transformValue( $value, $this->mappings() ) );
	}

	public function test_it_preserves_serialized_false_and_null_values(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );

		self::assertSame( 'b:0;', $transformer->transformValue( 'b:0;', $this->mappings() ) );
		self::assertSame( 'N;', $transformer->transformValue( 'N;', $this->mappings() ) );
	}

	public function test_it_leaves_serialized_objects_unchanged(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );
		$value       = 'O:8:"stdClass":1:{s:3:"url";s:27:"https://example.test/inside";}';

		self::assertSame( $value, $transformer->transformValue( $value, $this->mappings() ) );
	}

	public function test_it_leaves_serialized_payloads_with_nested_objects_unchanged(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );
		$value       = 'a:2:{s:3:"url";s:27:"https://example.test/inside";s:6:"object";O:8:"stdClass":0:{}}';

		self::assertSame( $value, $transformer->transformValue( $value, $this->mappings() ) );
	}

	public function test_it_leaves_invalid_json_strings_unchanged(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );
		$value       = '{"url":"https://example.test/missing"';

		self::assertSame( $value, $transformer->transformValue( $value, $this->mappings() ) );
	}

	public function test_it_transforms_nested_json_arrays(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );

		self::assertSame(
			'[{"url":"https:\/\/staging.example.test\/one"},{"count":2}]',
			$transformer->transformValue( '[{"url":"https:\/\/example.test\/one"},{"count":2}]', $this->mappings() )
		);
	}

	public function test_it_transforms_plain_string_metadata(): void {
		$transformer = new MetadataUrlTransformer( new UrlTransformer() );

		self::assertSame(
			'https://staging.example.test/contact',
			$transformer->transformValue( 'https://example.test/contact', $this->mappings() )
		);
	}
}