Initial commit to new repository

src/AxCopilot/Services/Agent/FileInfoTool.cs

@@ -0,0 +1,98 @@
+using System.IO;
+using System.Text;
+using System.Text.Json;
+
+namespace AxCopilot.Services.Agent;
+
+/// <summary>파일/폴더 메타 정보(크기, 수정일, 줄 수 등) 조회 도구.</summary>
+public class FileInfoTool : IAgentTool
+{
+    public string Name => "file_info";
+    public string Description =>
+        "Get file or directory metadata without reading contents. " +
+        "Returns: size, created/modified dates, line count (files), item count (directories), encoding hint.";
+
+    public ToolParameterSchema Parameters => new()
+    {
+        Properties = new()
+        {
+            ["path"] = new()
+            {
+                Type = "string",
+                Description = "File or directory path",
+            },
+        },
+        Required = ["path"],
+    };
+
+    public Task<ToolResult> ExecuteAsync(JsonElement args, AgentContext context, CancellationToken ct = default)
+    {
+        var rawPath = args.GetProperty("path").GetString() ?? "";
+        var path = Path.IsPathRooted(rawPath) ? rawPath : Path.Combine(context.WorkFolder, rawPath);
+
+        if (!context.IsPathAllowed(path))
+            return Task.FromResult(ToolResult.Fail($"경로 접근 차단: {path}"));
+
+        try
+        {
+            if (File.Exists(path))
+            {
+                var fi = new FileInfo(path);
+                var sb = new StringBuilder();
+                sb.AppendLine($"Type: File");
+                sb.AppendLine($"Path: {fi.FullName}");
+                sb.AppendLine($"Size: {FormatSize(fi.Length)} ({fi.Length:N0} bytes)");
+                sb.AppendLine($"Extension: {fi.Extension}");
+                sb.AppendLine($"Created: {fi.CreationTime:yyyy-MM-dd HH:mm:ss}");
+                sb.AppendLine($"Modified: {fi.LastWriteTime:yyyy-MM-dd HH:mm:ss}");
+                sb.AppendLine($"ReadOnly: {fi.IsReadOnly}");
+
+                // 텍스트 파일이면 줄 수 카운트 (최대 100만 줄까지)
+                var textExts = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+                    { ".cs", ".py", ".js", ".ts", ".java", ".cpp", ".c", ".h", ".xml", ".json",
+                      ".yaml", ".yml", ".md", ".txt", ".csv", ".html", ".htm", ".css", ".sql",
+                      ".sh", ".bat", ".ps1", ".config", ".ini", ".log", ".xaml" };
+                if (textExts.Contains(fi.Extension) && fi.Length < 50 * 1024 * 1024)
+                {
+                    var lineCount = File.ReadLines(path).Take(1_000_000).Count();
+                    sb.AppendLine($"Lines: {lineCount:N0}{(lineCount >= 1_000_000 ? "+" : "")}");
+                }
+
+                return Task.FromResult(ToolResult.Ok(sb.ToString()));
+            }
+
+            if (Directory.Exists(path))
+            {
+                var di = new DirectoryInfo(path);
+                var files = di.GetFiles("*", SearchOption.TopDirectoryOnly);
+                var dirs = di.GetDirectories();
+                var totalSize = files.Sum(f => f.Length);
+
+                var sb = new StringBuilder();
+                sb.AppendLine($"Type: Directory");
+                sb.AppendLine($"Path: {di.FullName}");
+                sb.AppendLine($"Files: {files.Length}");
+                sb.AppendLine($"Subdirectories: {dirs.Length}");
+                sb.AppendLine($"Total Size (top-level files): {FormatSize(totalSize)}");
+                sb.AppendLine($"Created: {di.CreationTime:yyyy-MM-dd HH:mm:ss}");
+                sb.AppendLine($"Modified: {di.LastWriteTime:yyyy-MM-dd HH:mm:ss}");
+
+                return Task.FromResult(ToolResult.Ok(sb.ToString()));
+            }
+
+            return Task.FromResult(ToolResult.Fail($"경로를 찾을 수 없습니다: {path}"));
+        }
+        catch (Exception ex)
+        {
+            return Task.FromResult(ToolResult.Fail($"정보 조회 오류: {ex.Message}"));
+        }
+    }
+
+    private static string FormatSize(long bytes) => bytes switch
+    {
+        < 1024 => $"{bytes}B",
+        < 1024 * 1024 => $"{bytes / 1024.0:F1}KB",
+        < 1024L * 1024 * 1024 => $"{bytes / (1024.0 * 1024):F1}MB",
+        _ => $"{bytes / (1024.0 * 1024 * 1024):F2}GB",
+    };
+}