feat: Implement history tracking with new CLI commands for viewing past transcripts and usage statistics.

2026-02-28 14:06:58 +01:00
parent eadbd8d46d
commit a08838fbc4
12 changed files with 349 additions and 4 deletions
--- a/Core/HistoryManager.cs
+++ b/Core/HistoryManager.cs
@@ -0,0 +1,102 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Toak.Serialization;
+
+namespace Toak.Core;
+
+public static class HistoryManager
+{
+    private static readonly string HistoryDir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "toak");
+    private static readonly string HistoryFile = Path.Combine(HistoryDir, "history.jsonl");
+
+    public static void SaveEntry(string rawTranscript, string refinedText, string? skillName, long durationMs)
+    {
+        try
+        {
+            if (!Directory.Exists(HistoryDir))
+            {
+                Directory.CreateDirectory(HistoryDir);
+            }
+
+            var entry = new HistoryEntry
+            {
+                Timestamp = DateTime.UtcNow,
+                RawTranscript = rawTranscript,
+                RefinedText = refinedText,
+                SkillName = skillName,
+                DurationMs = durationMs
+            };
+
+            var json = JsonSerializer.Serialize(entry, AppJsonSerializerContext.Default.HistoryEntry);
+            
+            // Thread-safe append
+            lock (HistoryFile)
+            {
+                File.AppendAllLines(HistoryFile, new[] { json });
+            }
+        }
+        catch (Exception ex)
+        {
+            Logger.LogDebug($"Failed to save history: {ex.Message}");
+        }
+    }
+
+    public static List<HistoryEntry> LoadEntries()
+    {
+        var entries = new List<HistoryEntry>();
+        if (!File.Exists(HistoryFile)) return entries;
+
+        try
+        {
+            string[] lines;
+            lock (HistoryFile)
+            {
+                lines = File.ReadAllLines(HistoryFile);
+            }
+
+            foreach (var line in lines)
+            {
+                if (string.IsNullOrWhiteSpace(line)) continue;
+                var entry = JsonSerializer.Deserialize(line, AppJsonSerializerContext.Default.HistoryEntry);
+                if (entry != null)
+                {
+                    entries.Add(entry);
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            Logger.LogDebug($"Failed to load history: {ex.Message}");
+        }
+
+        return entries;
+    }
+
+    public static void Shred()
+    {
+        if (File.Exists(HistoryFile))
+        {
+            try
+            {
+                lock (HistoryFile)
+                {
+                    // Securely delete
+                    var len = new FileInfo(HistoryFile).Length;
+                    using (var fs = new FileStream(HistoryFile, FileMode.Open, FileAccess.Write))
+                    {
+                        var blank = new byte[len];
+                        fs.Write(blank, 0, blank.Length);
+                    }
+                    File.Delete(HistoryFile);
+                }
+            }
+            catch (Exception ex)
+            {
+                Logger.LogDebug($"Failed to shred history: {ex.Message}");
+            }
+        }
+    }
+}