<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Abilities;

use LIT\MCP\Abilities\WriteFailed;
use LIT\MCP\Tests\Unit\TestCase;
use RuntimeException;

final class WriteFailedTest extends TestCase
{
    public function testCleanRollbackMapsToWriteFailed(): void
    {
        $cause = new RuntimeException('meta kaputt');
        $failure = WriteFailed::rolledBack('Felder konnten nicht gespeichert werden.', $cause, postId: 5);

        self::assertTrue($failure->rolledBack);
        self::assertSame($cause, $failure->getPrevious());
        self::assertStringContainsString('meta kaputt', $failure->getMessage());
        self::assertToolError($failure->toError(), 'write_failed');
    }

    public function testRolledBackHintReplacesTheDefaultHintOfWriteFailedOnly(): void
    {
        $clean = WriteFailed::rolledBack('x', hint: 'Erst neu lesen.');
        $partial = WriteFailed::partial('x');

        self::assertSame('Erst neu lesen.', $clean->toError()->get_error_data()['hint']);
        self::assertNotSame('Erst neu lesen.', $partial->toError()->get_error_data()['hint']);
        self::assertStringStartsWith('Den Aufruf nicht einfach wiederholen.', $partial->toError()->get_error_data()['hint']);
    }

    public function testIncompleteRollbackMapsToPartialWriteWithTheIds(): void
    {
        $error = WriteFailed::partial('Felder konnten nicht gespeichert werden.', postId: 5, revisionId: 811)->toError();

        self::assertToolError($error, 'partial_write');
        self::assertSame(5, $error->get_error_data()['post_id']);
        self::assertSame(811, $error->get_error_data()['revision_id']);
    }

    public function testIncompleteRollbackCanDescribeItsOwnStateHintAndDetails(): void
    {
        $error = WriteFailed::partial(
            'Menü nicht gespeichert.',
            state: 'Das Menü ist teilweise geändert.',
            hint: 'Mit lit/menu-get prüfen.',
            details: ['menu_id' => 3]
        )->toError();

        self::assertToolError($error, 'partial_write');
        self::assertStringContainsString('Das Menü ist teilweise geändert.', $error->get_error_message());
        self::assertStringNotContainsString('Entwurf', $error->get_error_message());
        self::assertSame('Mit lit/menu-get prüfen.', $error->get_error_data()['hint']);
        self::assertSame(3, $error->get_error_data()['menu_id']);
    }

    public function testRolledBackStateReplacesNothingWasSavedOfWriteFailedOnly(): void
    {
        $state = 'Die Änderung wurde nicht gespeichert (Sicherung 88 bleibt erhalten).';
        $clean = WriteFailed::rolledBack('x', state: $state)->toError();
        $partial = WriteFailed::partial('x')->toError();

        self::assertStringContainsString($state, $clean->get_error_message());
        self::assertStringNotContainsString('Nichts wurde gespeichert', $clean->get_error_message());
        self::assertStringNotContainsString($state, $partial->get_error_message());
    }

    public function testCleanRollbackKeepsItsDetails(): void
    {
        $error = WriteFailed::rolledBack('Nicht übernommen.', details: ['backup_id' => 88])->toError();

        self::assertToolError($error, 'write_failed');
        self::assertSame(88, $error->get_error_data()['backup_id']);
        self::assertStringContainsString('"backup_id":88', $error->get_error_message());
    }

    public function testTheLogMessageIsTheDetailOrTheCauseOrTheReasonWithTheRollbackOutcome(): void
    {
        $cause = new RuntimeException('meta kaputt');

        self::assertSame('Detail [rolled back]', WriteFailed::rolledBack('x', $cause, 'Detail')->getMessage());
        self::assertSame('meta kaputt [rollback incomplete]', WriteFailed::partial('x', $cause)->getMessage());
        self::assertSame('Grund [rolled back]', WriteFailed::rolledBack('Grund')->getMessage());
    }

    public function testTheNamedConstructorsKeepTheIdsForCallersThatLogThem(): void
    {
        $clean = WriteFailed::rolledBack('x', postId: 7, revisionId: 811);
        $partial = WriteFailed::partial('x', postId: 7, revisionId: 811);

        self::assertTrue($clean->rolledBack);
        self::assertSame([7, 811], [$clean->postId, $clean->revisionId]);
        self::assertFalse($partial->rolledBack);
        self::assertSame([7, 811], [$partial->postId, $partial->revisionId]);
        self::assertArrayNotHasKey('post_id', $clean->toError()->get_error_data());
    }
}