Félix Malfait
8c4a6cd663
## Summary This PR refactors the AI chat thread state management to use `null` instead of a sentinel string value (`AGENT_CHAT_UNKNOWN_THREAD_ID`) to represent an uninitialized or new chat thread. This improves type safety and makes the code more idiomatic by using `null` to represent the absence of a value. ## Key Changes - **Removed sentinel constant**: Deleted `AGENT_CHAT_UNKNOWN_THREAD_ID` constant and replaced all usages with `null` - **Updated state types**: Changed `currentAIChatThreadState`, `agentChatLastDiffSyncedThreadState`, and `agentChatDisplayedThreadState` to use `string | null` type with `null` as default value - **Updated component family states**: Modified message-related state families to accept `threadId: string | null` instead of `threadId: string` - **Refined null checks**: Added explicit `null` checks in: - `AgentChatMessagesFetchEffect`: Updated `isNewThread` logic to check for `null` first - `useAIChatThreadClick` and `useSwitchToNewAIChat`: Added guards to only save drafts when `currentAIChatThread !== null` - `AgentChatThreadInitializationEffect`: Added null check before UUID validation - `useEnsureAgentChatThreadIdForSend`: Added null check before comparing with draft key - **Updated fallback logic**: Used nullish coalescing operator (`??`) in `AIChatTab` and `useAIChatEditor` to default to `AGENT_CHAT_NEW_THREAD_DRAFT_KEY` when thread is null - **Enhanced refetch safety**: Added early return in `handleRefetchMessages` to prevent refetching when in new thread state ## Implementation Details - The change maintains backward compatibility by treating `null` the same way the code previously treated `AGENT_CHAT_UNKNOWN_THREAD_ID` - All draft saving operations now safely check for null before attempting to store drafts - The nullish coalescing pattern (`currentAIChatThread ?? AGENT_CHAT_NEW_THREAD_DRAFT_KEY`) ensures proper fallback behavior when accessing draft storage https://claude.ai/code/session_01Pz8KCygSNgBPYsndbMq8f7 --------- Co-authored-by: Claude <noreply@anthropic.com>
7 lines
222 B
TypeScript
7 lines
222 B
TypeScript
import { createAtomState } from '@/ui/utilities/state/jotai/utils/createAtomState';
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export const currentAIChatThreadState = createAtomState<string | null>({
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key: 'ai/currentAIChatThreadState',
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defaultValue: null,
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});
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