| 1 | #nullable enable |
| 2 | |
| 3 | using System.Text; |
| 4 | |
| 5 | namespace CascadeIDE.Services; |
| 6 | |
| 7 | /// <summary> |
| 8 | /// Проектные правила для MAF IDE-агента: текст из каталога решения/workspace (не шипнутый промпт приложения). |
| 9 | /// Совместимо с уже принятой конвенцией скрытых файлов под <c>.cascade-ide/</c>. |
| 10 | /// </summary> |
| 11 | internal static class CascadeIdeMafProjectAgentRules |
| 12 | { |
| 13 | /// <summary>Единый файл правил (проще всего версионировать в git).</summary> |
| 14 | internal const string SingleFileRelativePath = ".cascade-ide/maf-project-rules.md"; |
| 15 | |
| 16 | /// <summary>Необязательная папка: несколько модулей, порядок — по имени файла.</summary> |
| 17 | internal const string FragmentFolderRelativePath = ".cascade-ide/maf-project-rules"; |
| 18 | |
| 19 | internal const int MaxMergedCharacters = 64_000; |
| 20 | |
| 21 | /// <summary>Возвращает объединённый markdown или null, если корень невалиден или нет ни одного источника.</summary> |
| 22 | internal static string? TryLoadMerged(string? workspaceRootAbsolute) |
| 23 | { |
| 24 | var root = workspaceRootAbsolute?.Trim(); |
| 25 | if (string.IsNullOrEmpty(root) || !Directory.Exists(root)) |
| 26 | return null; |
| 27 | |
| 28 | var sb = new StringBuilder(4096); |
| 29 | var basePath = CanonicalFilePath.Normalize(root.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar)); |
| 30 | |
| 31 | var singlePath = CanonicalFilePath.Normalize(Path.Combine(basePath, SingleFileRelativePath.Replace('/', Path.DirectorySeparatorChar))); |
| 32 | TryAppendUnderRoot(sb, basePath, singlePath, sectionTitle: null); |
| 33 | |
| 34 | var fragmentDir = CanonicalFilePath.Normalize(Path.Combine(basePath, FragmentFolderRelativePath.Replace('/', Path.DirectorySeparatorChar))); |
| 35 | if (Directory.Exists(fragmentDir)) |
| 36 | { |
| 37 | foreach (var file in Directory.EnumerateFiles(fragmentDir, "*.md", SearchOption.TopDirectoryOnly) |
| 38 | .OrderBy(p => p, StringComparer.OrdinalIgnoreCase)) |
| 39 | { |
| 40 | var full = CanonicalFilePath.Normalize(file); |
| 41 | TryAppendUnderRoot(sb, basePath, full, |
| 42 | sectionTitle: "## " + Path.GetFileName(full)); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | var text = sb.ToString().Trim(); |
| 47 | if (text.Length == 0) |
| 48 | return null; |
| 49 | |
| 50 | if (text.Length <= MaxMergedCharacters) |
| 51 | return text; |
| 52 | |
| 53 | var note = |
| 54 | $"\n\n<!-- cascade-ide:maf-project-rules truncated; merged length was over {MaxMergedCharacters} chars -->\n"; |
| 55 | return text[..MaxMergedCharacters] + note + $"… (обрезано до {MaxMergedCharacters} символов)"; |
| 56 | } |
| 57 | |
| 58 | /// <summary>Не даём читать файл вне <paramref name="workspaceRootAbsolute"/>.</summary> |
| 59 | private static void TryAppendUnderRoot(StringBuilder sink, string workspaceRootAbsolute, string candidateAbsolutePath, |
| 60 | string? sectionTitle) |
| 61 | { |
| 62 | if (!File.Exists(candidateAbsolutePath)) |
| 63 | return; |
| 64 | |
| 65 | try |
| 66 | { |
| 67 | var canonicalWorkspace = CanonicalFilePath.Normalize(workspaceRootAbsolute); |
| 68 | var canonicalFile = CanonicalFilePath.Normalize(candidateAbsolutePath); |
| 69 | if (!IsStrictChildOrSameDirectory(canonicalWorkspace, canonicalFile)) |
| 70 | return; |
| 71 | |
| 72 | var body = File.ReadAllText(candidateAbsolutePath); |
| 73 | if (string.IsNullOrWhiteSpace(body)) |
| 74 | return; |
| 75 | |
| 76 | if (sink.Length > 0) |
| 77 | sink.Append("\n\n"); |
| 78 | |
| 79 | if (!string.IsNullOrEmpty(sectionTitle)) |
| 80 | { |
| 81 | sink.Append(sectionTitle.Trim()); |
| 82 | sink.Append('\n').Append('\n'); |
| 83 | } |
| 84 | |
| 85 | sink.Append(body.Trim()); |
| 86 | } |
| 87 | catch (IOException) |
| 88 | { |
| 89 | /* ignore unreadable rules */ |
| 90 | } |
| 91 | catch (UnauthorizedAccessException) |
| 92 | { |
| 93 | /* ignore */ |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | private static bool IsStrictChildOrSameDirectory(string workspaceDir, string filePath) |
| 98 | { |
| 99 | workspaceDir = Path.TrimEndingDirectorySeparator(CanonicalFilePath.Normalize(workspaceDir)); |
| 100 | filePath = CanonicalFilePath.Normalize(filePath); |
| 101 | |
| 102 | var wr = Path.GetPathRoot(workspaceDir); |
| 103 | var fr = Path.GetPathRoot(filePath); |
| 104 | if (string.IsNullOrEmpty(wr) || string.IsNullOrEmpty(fr) |
| 105 | || !string.Equals(wr, fr, StringComparison.OrdinalIgnoreCase)) |
| 106 | return false; |
| 107 | |
| 108 | var rel = Path.GetRelativePath(workspaceDir, filePath); |
| 109 | return rel != ".." && !rel.StartsWith(".." + Path.DirectorySeparatorChar, StringComparison.Ordinal); |
| 110 | } |
| 111 | } |
| 112 | |