fix: summary mismatch after new conversation

[krushnarout]

when a new conversation is added to the list, the previous index points to a different conversation, causing the summary to change while viewing

fix:
track conversations by id first, automatically update index when list order changes

before:

ScreenRecording_11-09-2025.10-28-27_1.MOV

after:

ScreenRecording_11-09-2025.10-19-37_1.MP4

closes #3374

[gemini-code-assist]

Code Review

This pull request addresses a bug where the conversation summary mismatches after a new conversation is added. The fix involves tracking conversations by a stable ID instead of their index. The changes are generally good and move towards a more robust state management. However, I've found a potential issue in the conversation getter where it can fall back to a stale cached conversation, leading to incorrect data being displayed. I've provided a detailed comment and a suggested refactoring to make the logic safer and more correct.

[gemini-code-assist]

The current implementation of the conversation getter has a flaw where it can return a stale _cachedConversation, leading to incorrect data being displayed. This happens on lines 64 and 69, where _cachedConversation is returned as a fallback without checking if it belongs to the selectedDate.

For example, if a conversation is moved to a different date, indexWhere will fail, and the getter will incorrectly return the stale cached version, making it seem like the conversation still belongs to the old date.

To fix this and make the logic more robust and readable, I suggest refactoring the getter to prioritize lookups correctly and ensure the returned conversation is always valid for the selectedDate.

Note: This suggested change makes the getter stricter. It will now throw an exception if no valid conversation is available. This might cause updateConversation to crash, as it calls this getter. You may need to adjust updateConversation to handle cases where a conversation isn't found for a given date and index.

  ServerConversation get conversation {
    final provider = conversationProvider;
    final id = _cachedConversationId;
    final list = provider?.groupedConversations[selectedDate];

    // 1. Try to find by cached ID in the current list.
    if (id != null && list != null && list.isNotEmpty) {
      final i = list.indexWhere((c) => c.id == id);
      if (i != -1) {
        if (i != conversationIdx) conversationIdx = i;
        return _cachedConversation = list[i];
      }
    }

    // 2. If not found by ID, try to use the index.
    if (list != null && conversationIdx < list.length) {
      _cachedConversation = list[conversationIdx];
      _cachedConversationId = list[conversationIdx].id;
      return _cachedConversation!;
    }

    // 3. As a last resort, use the cached conversation only if it's for the selected date.
    if (_cachedConversation != null) {
      final cDate = _cachedConversation!.createdAt;
      if (cDate.year == selectedDate.year && cDate.month == selectedDate.month && cDate.day == selectedDate.day) {
        return _cachedConversation!;
      }
    }

    throw StateError("No conversation available");
  }

[krushnarout]

ok ok maybe we can improve

  ServerConversation get conversation {
    final list = conversationProvider?.groupedConversations[selectedDate];
    final id = _cachedConversationId;

    ServerConversation? result;

    if (list != null && list.isNotEmpty) {
      final i = list.indexWhere((c) => c.id == id);
      if (i != -1) {
        result = list[conversationIdx = i];
      } else if (conversationIdx < list.length) {
        result = list[conversationIdx];
        _cachedConversationId = result.id;
      }
    }

    result ??= _cachedConversation;
    if (result != null &&
        result.createdAt.year == selectedDate.year &&
        result.createdAt.month == selectedDate.month &&
        result.createdAt.day == selectedDate.day) {
      return _cachedConversation = result;
    }

    throw StateError("No valid conversation found");
  }

[aaravgarg]

@krushnarout whats the status here

[krushnarout]

@krushnarout whats the status here

it's fixed

[beastoin]

try removing the > conversationIdx from conversation details provider completely, use conversationId

[krushnarout]

try removing the > conversationIdx from conversation details provider completely, use conversationId

Done sir