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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ export const ChatBoxToolbar = ({
isContextSelectorOpen,
onContextSelectorOpenChanged,
}: ChatBoxToolbarProps) => {
const { selectedLanguageModel, setSelectedLanguageModel } = useSelectedLanguageModel({
const { resolvedSelectedLanguageModel, setSelectedLanguageModel } = useSelectedLanguageModel({
languageModels,
});

Expand All @@ -48,7 +48,7 @@ export const ChatBoxToolbar = ({
<LanguageModelSelector
languageModels={languageModels}
onSelectedModelChange={setSelectedLanguageModel}
selectedModel={selectedLanguageModel}
selectedModel={resolvedSelectedLanguageModel}
/>
</>
)
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -126,6 +126,12 @@ export const LanguageModelSelector = ({
return (
<CommandItem
key={getLanguageModelKey(model)}
value={getLanguageModelKey(model)}
keywords={[
model.displayName ?? "",
model.model,
model.provider,
]}
onSelect={() => {
selectModel(model)
}}
Expand Down
57 changes: 51 additions & 6 deletions packages/web/src/features/chat/useSelectedLanguageModel.ts
Original file line number Diff line number Diff line change
Expand Up @@ -9,27 +9,71 @@ type Props = {
languageModels: LanguageModelInfo[];
}

const getStoredSelectedLanguageModel = (): LanguageModelInfo | undefined => {
try {
const storedValue = window.localStorage.getItem("selectedLanguageModel");
if (!storedValue) {
return undefined;
}

const parsedValue = JSON.parse(storedValue);
if (
typeof parsedValue === "object" &&
parsedValue !== null &&
typeof parsedValue.provider === "string" &&
typeof parsedValue.model === "string" &&
typeof parsedValue.displayName === "string"
) {
return parsedValue as LanguageModelInfo;
}

return undefined;
} catch {
return undefined;
}
};

export const useSelectedLanguageModel = ({
languageModels,
}: Props) => {
const fallbackLanguageModel = languageModels.length > 0 ? languageModels[0] : undefined;
const [selectedLanguageModel, setSelectedLanguageModel] = useLocalStorage<LanguageModelInfo | undefined>(
"selectedLanguageModel",
fallbackLanguageModel,
undefined,
{
initializeWithValue: false,
}
);

const availableSelectedLanguageModel = selectedLanguageModel && languageModels.find(
(model) => getLanguageModelKey(model) === getLanguageModelKey(selectedLanguageModel)
);

const resolvedSelectedLanguageModel = availableSelectedLanguageModel ?? fallbackLanguageModel;
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// Handle the case where the selected language model is no longer
// available. Reset to the fallback language model in this case.
useEffect(() => {
if (!selectedLanguageModel || !languageModels.find(
(model) => getLanguageModelKey(model) === getLanguageModelKey(selectedLanguageModel)
)) {
setSelectedLanguageModel(fallbackLanguageModel);
if (languageModels.length === 0) {
return;
}

if (selectedLanguageModel && !availableSelectedLanguageModel) {
setSelectedLanguageModel(() => {
const storedSelectedLanguageModel = getStoredSelectedLanguageModel();
const availableStoredSelectedLanguageModel = storedSelectedLanguageModel && languageModels.find(
(model) => getLanguageModelKey(model) === getLanguageModelKey(storedSelectedLanguageModel)
);

if (availableStoredSelectedLanguageModel) {
return availableStoredSelectedLanguageModel;
}

return fallbackLanguageModel;
});
}
}, [
availableSelectedLanguageModel,
fallbackLanguageModel,
languageModels,
selectedLanguageModel,
Expand All @@ -38,6 +82,7 @@ export const useSelectedLanguageModel = ({

return {
selectedLanguageModel,
resolvedSelectedLanguageModel,
setSelectedLanguageModel,
};
}
}