<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\ChangeLog;

use Brain\Monkey\Functions;
use LIT\MCP\ChangeLog\ChangeLog;
use LIT\MCP\Server\RequestContext;
use LIT\MCP\Tests\Unit\TestCase;
use Mockery;

final class ChangeLogTest extends TestCase
{
    protected function tearDown(): void
    {
        RequestContext::reset();
        parent::tearDown();
    }

    public function testRecordStoresReferencesAndReturnsTheId(): void
    {
        Functions\when('current_time')->justReturn('2026-09-25 08:00:00');
        Functions\when('get_current_user_id')->justReturn(3);
        RequestContext::reset(true, 'Claude');
        $db = Mockery::mock(\wpdb::class)->makePartial();
        $db->expects('insert')
            ->with('wp_lit_mcp_log', Mockery::on(static function (array $row): bool {
                return $row['created_at'] === '2026-09-25 08:00:00'
                    && $row['user_id'] === 3
                    && $row['client'] === 'Claude'
                    && $row['ability'] === 'lit/content-update'
                    && $row['object_type'] === 'page'
                    && $row['object_id'] === '12'
                    && $row['summary'] === 'Seite geändert'
                    && $row['revision_id'] === 811
                    && $row['snapshot_id'] === null
                    && $row['result'] === 'ok';
            }), Mockery::type('array'))
            ->andReturnUsing(static function () use ($db): int {
                $db->insert_id = 4711;
                return 1;
            });

        $id = (new ChangeLog($db))->record('lit/content-update', 'page', '12', 'Seite geändert', 811);

        self::assertSame(4711, $id);
    }

    public function testRecordReturnsNullWhenTheInsertFails(): void
    {
        Functions\when('current_time')->justReturn('2026-09-25 08:00:00');
        Functions\when('get_current_user_id')->justReturn(3);
        $db = Mockery::mock(\wpdb::class)->makePartial();
        $db->allows('insert')->andReturn(false);
        $log = (string) tempnam(sys_get_temp_dir(), 'lit-mcp-log');
        $previous = ini_set('error_log', $log);

        try {
            $id = (new ChangeLog($db))->record('lit/content-update', 'page', '12', 'x');
        } finally {
            ini_set('error_log', (string) $previous);
        }

        self::assertNull($id);
        self::assertStringContainsString('change log insert failed', (string) file_get_contents($log));
        unlink($log);
    }

    public function testRecordTruncatesObjectIdAndAbilityToTheColumnSizes(): void
    {
        Functions\when('current_time')->justReturn('2026-09-25 08:00:00');
        Functions\when('get_current_user_id')->justReturn(3);
        $db = Mockery::mock(\wpdb::class)->makePartial();
        $db->expects('insert')
            ->with('wp_lit_mcp_log', Mockery::on(static function (array $row): bool {
                return $row['object_id'] === str_repeat('ä', 191) && $row['ability'] === str_repeat('ö', 100);
            }), Mockery::type('array'))
            ->andReturn(1);

        (new ChangeLog($db))->record(str_repeat('ö', 150), 'option', str_repeat('ä', 300), 'x');
    }

    public function testRecordPartialStoresResultPartial(): void
    {
        Functions\when('current_time')->justReturn('2026-09-25 08:00:00');
        Functions\when('get_current_user_id')->justReturn(3);
        $db = Mockery::mock(\wpdb::class)->makePartial();
        $db->expects('insert')
            ->with('wp_lit_mcp_log', Mockery::on(static function (array $row): bool {
                return $row['result'] === 'partial' && $row['revision_id'] === 7 && $row['object_id'] === '12';
            }), Mockery::type('array'))
            ->andReturn(1);

        (new ChangeLog($db))->recordPartial('lit/content-update', 'page', '12', 'teilweise', 7);
    }

    public function testRecordPartialNeverThrows(): void
    {
        Functions\when('current_time')->justReturn('2026-09-25 08:00:00');
        Functions\when('get_current_user_id')->justReturn(3);
        $db = Mockery::mock(\wpdb::class)->makePartial();
        $db->allows('insert')->andThrow(new \RuntimeException('db gone'));
        $log = (string) tempnam(sys_get_temp_dir(), 'lit-mcp-log');
        $previous = ini_set('error_log', $log);

        try {
            (new ChangeLog($db))->recordPartial('lit/menu-set-items', 'nav_menu', '4', 'teilweise');
        } finally {
            ini_set('error_log', (string) $previous);
        }

        self::assertStringContainsString('db gone', (string) file_get_contents($log));
        unlink($log);
    }

    public function testPurgeDeletesRowsOlderThanTheRetention(): void
    {
        $db = Mockery::mock(\wpdb::class)->makePartial();
        $db->expects('query')
            ->with(Mockery::on(static fn (string $sql): bool => str_starts_with(
                $sql,
                "DELETE FROM wp_lit_mcp_log WHERE created_at < '"
            )))
            ->andReturn(3);

        self::assertSame(3, (new ChangeLog($db))->purgeOlderThan(90));
    }
}