<?php

namespace WPContentSync\Tests\Unit\Transport;

use PHPUnit\Framework\TestCase;
use WPContentSync\Package\ContentPackage;
use WPContentSync\Package\PackageChecksum;
use WPContentSync\Package\PackageValidator;
use WPContentSync\Transport\JsonFileTransport;

class JsonFileTransportTest extends TestCase {
	public function test_it_exports_pretty_json_packages(): void {
		$transport = new JsonFileTransport( new PackageValidator() );
		$json      = $transport->export( $this->package() );

		self::assertStringContainsString( "\n", $json );
		self::assertStringContainsString( '"schema_version": "1.0"', $json );
	}

	public function test_it_imports_valid_json_packages(): void {
		$transport = new JsonFileTransport( new PackageValidator() );
		$package   = $transport->import( $transport->export( $this->package() ) );

		self::assertSame( '1.0', $package->schemaVersion() );
		self::assertSame( 'https://example.test', $package->source()['site_url'] );
	}

	public function test_it_rejects_invalid_json(): void {
		$transport = new JsonFileTransport( new PackageValidator() );

		$this->expectException( \InvalidArgumentException::class );
		$this->expectExceptionMessage( 'The selected file is not valid JSON.' );

		$transport->import( '{"schema_version":' );
	}

	public function test_it_rejects_schema_errors(): void {
		$transport = new JsonFileTransport( new PackageValidator() );

		$this->expectException( \InvalidArgumentException::class );
		$this->expectExceptionMessage( 'records is required.' );

		$transport->import( '{"schema_version":"1.0"}' );
	}

	private function package(): ContentPackage {
		$records = array(
			'posts'             => array(),
			'terms'             => array(),
			'media'             => array(),
			'custom_post_types' => array(),
		);

		return ContentPackage::fromArray(
			array(
				'schema_version' => '1.0',
				'generated_at'   => '2026-04-26T20:30:00+00:00',
				'source'         => array(
					'site_url' => 'https://example.test',
					'name'     => 'Example Production',
				),
				'destination'    => array(
					'site_url' => 'https://staging.example.test',
					'name'     => 'Example Staging',
				),
				'manifest'       => array(
					'posts'             => 0,
					'terms'             => 0,
					'media'             => 0,
					'custom_post_types' => 0,
				),
				'records'        => $records,
				'checksums'      => array(
					'records' => PackageChecksum::records( $records ),
				),
			)
		);
	}
}