| 1 | using System.Text.Json; |
| 2 | using System.Text.Json.Serialization; |
| 3 | |
| 4 | namespace CascadeIDE.Features.Intercom.Transport; |
| 5 | |
| 6 | /// <summary>Состояние transport per workspace: <c>last_seq</c>, mapping thread→topic.</summary> |
| 7 | public sealed class IntercomTransportStateStore |
| 8 | { |
| 9 | private static readonly JsonSerializerOptions Json = new() |
| 10 | { |
| 11 | PropertyNamingPolicy = JsonNamingPolicy.CamelCase, |
| 12 | WriteIndented = true, |
| 13 | }; |
| 14 | |
| 15 | private string? _workspaceRoot; |
| 16 | private long _lastSeq; |
| 17 | private readonly Dictionary<string, string> _threadTopics = new(StringComparer.OrdinalIgnoreCase); |
| 18 | |
| 19 | public long LastSeq => _lastSeq; |
| 20 | |
| 21 | public void SetWorkspaceRoot(string? workspaceRoot) => _workspaceRoot = workspaceRoot; |
| 22 | |
| 23 | public void UpdateLastSeq(long seq) |
| 24 | { |
| 25 | if (seq <= _lastSeq) |
| 26 | return; |
| 27 | _lastSeq = seq; |
| 28 | Persist(); |
| 29 | } |
| 30 | |
| 31 | public bool TryGetTopicForThread(string threadId, out string topicId) |
| 32 | { |
| 33 | if (string.IsNullOrWhiteSpace(threadId)) |
| 34 | return _threadTopics.TryGetValue("general", out topicId!); |
| 35 | return _threadTopics.TryGetValue(threadId, out topicId!); |
| 36 | } |
| 37 | |
| 38 | public void SetTopicForThread(string threadId, string topicId) |
| 39 | { |
| 40 | var key = string.IsNullOrWhiteSpace(threadId) ? "general" : threadId; |
| 41 | _threadTopics[key] = topicId; |
| 42 | Persist(); |
| 43 | } |
| 44 | |
| 45 | public void Load() |
| 46 | { |
| 47 | _lastSeq = 0; |
| 48 | _threadTopics.Clear(); |
| 49 | var path = StatePath(); |
| 50 | if (path is null || !File.Exists(path)) |
| 51 | return; |
| 52 | |
| 53 | try |
| 54 | { |
| 55 | var json = File.ReadAllText(path); |
| 56 | var state = JsonSerializer.Deserialize<StateDto>(json, Json); |
| 57 | if (state is null) |
| 58 | return; |
| 59 | _lastSeq = state.LastSeq; |
| 60 | if (state.ThreadTopics is not null) |
| 61 | { |
| 62 | foreach (var kv in state.ThreadTopics) |
| 63 | _threadTopics[kv.Key] = kv.Value; |
| 64 | } |
| 65 | } |
| 66 | catch |
| 67 | { |
| 68 | _lastSeq = 0; |
| 69 | _threadTopics.Clear(); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | private void Persist() |
| 74 | { |
| 75 | var path = StatePath(); |
| 76 | if (path is null) |
| 77 | return; |
| 78 | |
| 79 | try |
| 80 | { |
| 81 | Directory.CreateDirectory(Path.GetDirectoryName(path)!); |
| 82 | var dto = new StateDto(_lastSeq, new Dictionary<string, string>(_threadTopics)); |
| 83 | File.WriteAllText(path, JsonSerializer.Serialize(dto, Json)); |
| 84 | } |
| 85 | catch |
| 86 | { |
| 87 | // best-effort |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | private string? StatePath() |
| 92 | { |
| 93 | if (string.IsNullOrWhiteSpace(_workspaceRoot)) |
| 94 | return null; |
| 95 | return Path.Combine(_workspaceRoot, ".cascade-ide", "intercom-transport-state.json"); |
| 96 | } |
| 97 | |
| 98 | private sealed record StateDto( |
| 99 | [property: JsonPropertyName("last_seq")] long LastSeq, |
| 100 | [property: JsonPropertyName("thread_topics")] Dictionary<string, string>? ThreadTopics); |
| 101 | } |
| 102 | |