| 1 | namespace IntercomService.Services; |
| 2 | |
| 3 | /// <summary>Нормализация git remote URL (ADR 0144 §2.3.1).</summary> |
| 4 | public static class GitRepoUrlNormalizer |
| 5 | { |
| 6 | public static string? TryNormalize(string? raw) |
| 7 | { |
| 8 | if (string.IsNullOrWhiteSpace(raw)) |
| 9 | return null; |
| 10 | |
| 11 | var url = raw.Trim(); |
| 12 | if (url.EndsWith(".git", StringComparison.OrdinalIgnoreCase)) |
| 13 | url = url[..^4]; |
| 14 | |
| 15 | if (url.StartsWith("git@", StringComparison.Ordinal)) |
| 16 | { |
| 17 | var at = url.IndexOf('@'); |
| 18 | var colon = url.IndexOf(':', at + 1); |
| 19 | if (colon < 0) |
| 20 | return null; |
| 21 | var sshHost = url[(at + 1)..colon].ToLowerInvariant(); |
| 22 | var sshPath = url[(colon + 1)..].Trim('/'); |
| 23 | return $"{sshHost}/{sshPath.ToLowerInvariant()}"; |
| 24 | } |
| 25 | |
| 26 | if (!Uri.TryCreate(url, UriKind.Absolute, out var uri)) |
| 27 | { |
| 28 | var slash = url.IndexOf('/'); |
| 29 | if (slash <= 0) |
| 30 | return null; |
| 31 | var bareHost = url[..slash].ToLowerInvariant(); |
| 32 | var barePath = url[(slash + 1)..].Trim('/'); |
| 33 | if (string.IsNullOrWhiteSpace(barePath)) |
| 34 | return null; |
| 35 | return $"{bareHost}/{barePath.ToLowerInvariant()}"; |
| 36 | } |
| 37 | |
| 38 | if (!string.Equals(uri.Scheme, "https", StringComparison.OrdinalIgnoreCase) |
| 39 | && !string.Equals(uri.Scheme, "http", StringComparison.OrdinalIgnoreCase)) |
| 40 | return null; |
| 41 | |
| 42 | var host = uri.Host.ToLowerInvariant(); |
| 43 | var path = uri.AbsolutePath.Trim('/'); |
| 44 | if (string.IsNullOrWhiteSpace(path)) |
| 45 | return null; |
| 46 | |
| 47 | return $"{host}/{path.ToLowerInvariant()}"; |
| 48 | } |
| 49 | |
| 50 | public static IReadOnlyList<string> NormalizeMany(IEnumerable<string?> urls) |
| 51 | { |
| 52 | var set = new HashSet<string>(StringComparer.Ordinal); |
| 53 | foreach (var url in urls) |
| 54 | { |
| 55 | var normalized = TryNormalize(url); |
| 56 | if (!string.IsNullOrWhiteSpace(normalized)) |
| 57 | set.Add(normalized); |
| 58 | } |
| 59 | |
| 60 | return set.ToList(); |
| 61 | } |
| 62 | } |
| 63 | |