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2026-04-03 18:22:19 +09:00
commit 4458bb0f52
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.Json;
using System.Threading;
using AxCopilot.Models;
namespace AxCopilot.Services;
public class ChatStorageService
{
private static readonly string ConversationsDir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "AxCopilot", "conversations");
private static readonly JsonSerializerOptions JsonOpts = new JsonSerializerOptions
{
WriteIndented = false,
PropertyNameCaseInsensitive = true
};
private static readonly ReaderWriterLockSlim Lock = new ReaderWriterLockSlim();
private List<ChatConversation>? _metaCache;
private bool _metaDirty = true;
public ChatStorageService()
{
Directory.CreateDirectory(ConversationsDir);
}
public void Save(ChatConversation conversation)
{
conversation.UpdatedAt = DateTime.Now;
if (string.IsNullOrEmpty(conversation.Preview) && conversation.Messages.Count > 0)
{
ChatMessage chatMessage = conversation.Messages.FirstOrDefault((ChatMessage m) => m.Role == "user");
if (chatMessage != null)
{
conversation.Preview = ((chatMessage.Content.Length > 100) ? chatMessage.Content.Substring(0, 100) : chatMessage.Content);
}
}
string content = JsonSerializer.Serialize(conversation, JsonOpts);
string filePath = GetFilePath(conversation.Id);
string text = filePath + ".tmp";
Lock.EnterWriteLock();
try
{
CryptoService.EncryptToFile(text, content);
if (File.Exists(filePath))
{
File.Delete(filePath);
}
File.Move(text, filePath);
UpdateMetaCache(conversation);
}
catch (Exception ex)
{
try
{
if (File.Exists(text))
{
File.Delete(text);
}
}
catch
{
}
LogService.Warn("대화 저장 실패 (" + conversation.Id + "): " + ex.Message);
throw;
}
finally
{
Lock.ExitWriteLock();
}
}
public ChatConversation? Load(string id)
{
string filePath = GetFilePath(id);
Lock.EnterReadLock();
try
{
if (!File.Exists(filePath))
{
return null;
}
string json = CryptoService.DecryptFromFile(filePath);
return JsonSerializer.Deserialize<ChatConversation>(json, JsonOpts);
}
catch (Exception ex)
{
LogService.Warn("대화 로드 실패 (" + id + "): " + ex.Message);
return null;
}
finally
{
Lock.ExitReadLock();
}
}
public void InvalidateMetaCache()
{
_metaDirty = true;
}
public void UpdateMetaCache(ChatConversation conv)
{
if (_metaCache != null)
{
int num = _metaCache.FindIndex((ChatConversation c) => c.Id == conv.Id);
ChatConversation chatConversation = new ChatConversation
{
Id = conv.Id,
Title = conv.Title,
CreatedAt = conv.CreatedAt,
UpdatedAt = conv.UpdatedAt,
Pinned = conv.Pinned,
Category = conv.Category,
Tab = conv.Tab,
SystemCommand = conv.SystemCommand,
WorkFolder = conv.WorkFolder,
Preview = conv.Preview,
Messages = new List<ChatMessage>(),
ExecutionEvents = (conv.ExecutionEvents?.ToList() ?? new List<ChatExecutionEvent>())
};
if (num >= 0)
{
_metaCache[num] = chatConversation;
}
else
{
_metaCache.Add(chatConversation);
}
}
}
public void RemoveFromMetaCache(string id)
{
_metaCache?.RemoveAll((ChatConversation c) => c.Id == id);
}
public List<ChatConversation> LoadAllMeta()
{
if (!_metaDirty && _metaCache != null)
{
return (from c in _metaCache
orderby c.Pinned descending, c.UpdatedAt descending
select c).ToList();
}
List<ChatConversation> list = new List<ChatConversation>();
if (!Directory.Exists(ConversationsDir))
{
_metaCache = list;
_metaDirty = false;
return list;
}
Lock.EnterReadLock();
try
{
string[] files = Directory.GetFiles(ConversationsDir, "*.axchat");
foreach (string text in files)
{
try
{
string json = CryptoService.DecryptFromFile(text);
ChatConversation chatConversation = JsonSerializer.Deserialize<ChatConversation>(json, JsonOpts);
if (chatConversation != null)
{
ChatConversation item = new ChatConversation
{
Id = chatConversation.Id,
Title = chatConversation.Title,
CreatedAt = chatConversation.CreatedAt,
UpdatedAt = chatConversation.UpdatedAt,
Pinned = chatConversation.Pinned,
Category = chatConversation.Category,
Tab = chatConversation.Tab,
SystemCommand = chatConversation.SystemCommand,
WorkFolder = chatConversation.WorkFolder,
Preview = chatConversation.Preview,
Messages = new List<ChatMessage>(),
ExecutionEvents = (chatConversation.ExecutionEvents?.ToList() ?? new List<ChatExecutionEvent>())
};
list.Add(item);
}
}
catch (Exception ex)
{
LogService.Warn("대화 메타 로드 실패 (" + Path.GetFileName(text) + "): " + ex.Message);
}
}
}
finally
{
Lock.ExitReadLock();
}
_metaCache = list;
_metaDirty = false;
return (from c in list
orderby c.Pinned descending, c.UpdatedAt descending
select c).ToList();
}
public void Delete(string id)
{
string filePath = GetFilePath(id);
Lock.EnterWriteLock();
try
{
if (File.Exists(filePath))
{
File.Delete(filePath);
}
RemoveFromMetaCache(id);
}
catch (Exception ex)
{
LogService.Warn("대화 삭제 실패 (" + id + "): " + ex.Message);
}
finally
{
Lock.ExitWriteLock();
}
}
public int DeleteAll()
{
if (!Directory.Exists(ConversationsDir))
{
return 0;
}
Lock.EnterWriteLock();
try
{
string[] files = Directory.GetFiles(ConversationsDir, "*.axchat");
int num = 0;
string[] array = files;
foreach (string path in array)
{
try
{
File.Delete(path);
num++;
}
catch (Exception ex)
{
LogService.Warn("파일 삭제 실패 (" + Path.GetFileName(path) + "): " + ex.Message);
}
}
InvalidateMetaCache();
return num;
}
finally
{
Lock.ExitWriteLock();
}
}
public int PurgeExpired(int retentionDays)
{
if (retentionDays <= 0)
{
return 0;
}
DateTime dateTime = DateTime.Now.AddDays(-retentionDays);
int num = 0;
Lock.EnterWriteLock();
try
{
string[] files = Directory.GetFiles(ConversationsDir, "*.axchat");
foreach (string text in files)
{
try
{
string json = CryptoService.DecryptFromFile(text);
ChatConversation chatConversation = JsonSerializer.Deserialize<ChatConversation>(json, JsonOpts);
if (chatConversation != null && !chatConversation.Pinned && chatConversation.UpdatedAt < dateTime)
{
File.Delete(text);
RemoveFromMetaCache(chatConversation.Id);
num++;
}
}
catch (Exception ex)
{
LogService.Warn("만료 대화 정리 실패 (" + Path.GetFileName(text) + "): " + ex.Message);
}
}
}
finally
{
Lock.ExitWriteLock();
}
return num;
}
public int PurgeForDiskSpace(double threshold = 0.98)
{
try
{
DriveInfo driveInfo = new DriveInfo(Path.GetPathRoot(ConversationsDir) ?? "C");
if (driveInfo.TotalSize <= 0)
{
return 0;
}
double num = 1.0 - (double)driveInfo.AvailableFreeSpace / (double)driveInfo.TotalSize;
if (num < threshold)
{
return 0;
}
LogService.Info($"드라이브 사용률 {num:P1} — 대화 정리 시작 (임계값: {threshold:P0})");
var list = (from f in Directory.GetFiles(ConversationsDir, "*.axchat")
select new
{
Path = f,
LastWrite = File.GetLastWriteTime(f)
} into f
orderby f.LastWrite
select f).ToList();
int num2 = 0;
Lock.EnterWriteLock();
try
{
foreach (var item in list)
{
double num3 = 1.0 - (double)driveInfo.AvailableFreeSpace / (double)driveInfo.TotalSize;
if (num3 < threshold - 0.02)
{
break;
}
try
{
string json = CryptoService.DecryptFromFile(item.Path);
ChatConversation chatConversation = JsonSerializer.Deserialize<ChatConversation>(json, JsonOpts);
if (chatConversation == null || !chatConversation.Pinned)
{
File.Delete(item.Path);
num2++;
}
}
catch
{
}
}
}
finally
{
Lock.ExitWriteLock();
}
if (num2 > 0)
{
LogService.Info($"드라이브 용량 부족으로 대화 {num2}개 삭제 완료");
}
return num2;
}
catch (Exception ex)
{
LogService.Warn("디스크 용량 확인 실패: " + ex.Message);
return 0;
}
}
private static string GetFilePath(string id)
{
return Path.Combine(ConversationsDir, id + ".axchat");
}
}