<?php
declare(strict_types=1);

namespace MageSail\Magesail\Test\Unit\Model;

use MageSail\Magesail\Model\NginxMapParser;
use PHPUnit\Framework\TestCase;

class NginxMapParserTest extends TestCase
{
    public function testParseExtractsMapBlockAndEntries(): void
    {
        $content = <<<'NGINX'
# comment
map $http_host $MAGE_RUN_CODE {
    default '';
    dev.example.com mgtun_abc123;
    "other.host" mgtun_xyz;
}
NGINX;
        $parser = new NginxMapParser();
        $result = $parser->parse($content);
        self::assertCount(1, $result['blocks']);
        $b = $result['blocks'][0];
        self::assertSame('http_host', $b['source']);
        self::assertSame('MAGE_RUN_CODE', $b['target']);
        self::assertSame(1, $b['startLine']);
        self::assertSame(5, $b['endLine']);
        self::assertCount(2, $b['entries']);
        self::assertSame('dev.example.com', $b['entries'][0]['hostname']);
        self::assertSame('mgtun_abc123', $b['entries'][0]['value']);
        self::assertSame('other.host', $b['entries'][1]['hostname']);
        self::assertSame('mgtun_xyz', $b['entries'][1]['value']);
    }

    public function testParseEmptyContent(): void
    {
        $parser = new NginxMapParser();
        self::assertSame([], $parser->parse('')['blocks']);
    }

    public function testRebuildRoundTripPreservesNonMapLines(): void
    {
        $original = <<<'NGINX'
before
map $http_host $MAGE_RUN_CODE {
    default '';
    host1 code1;
}
after
NGINX;
        $parser = new NginxMapParser();
        $parsed = $parser->parse($original);
        $rebuilt = $parser->rebuild($original, $parsed);
        self::assertStringContainsString('before', $rebuilt);
        self::assertStringContainsString('after', $rebuilt);
        self::assertStringContainsString('map $http_host $MAGE_RUN_CODE {', $rebuilt);
        self::assertStringContainsString('host1 code1;', $rebuilt);
    }

    public function testRebuildThrowsWhenBlockMissingLineMetadata(): void
    {
        $parser = new NginxMapParser();
        $this->expectException(\InvalidArgumentException::class);
        $parser->rebuild("map \$h \$t {\n}\n", [
            'blocks' => [
                [
                    'source' => 'h',
                    'target' => 't',
                    'entries' => [],
                ],
            ],
        ]);
    }
}