enhancement: create new thread with last chosen model (#4524)

* enhancement: create new thread with last chosen model

* chore: resolve setting undefined

web/hooks/useCreateNewThread.ts

@@ -51,11 +51,13 @@ export const useCreateNewThread = () => {
 
   const { recommendedModel } = useRecommendedModel()
 
+  const selectedModel = useAtomValue(selectedModelAtom)
+
   const requestCreateNewThread = async (
     assistant: (ThreadAssistantInfo & { id: string; name: string }) | Assistant,
     model?: Model | undefined
   ) => {
-    const defaultModel = model || recommendedModel
+    const defaultModel = model || selectedModel || recommendedModel
 
     if (!model) {
       // if we have model, which means user wants to create new thread from Model hub. Allow them.
@@ -82,23 +84,23 @@ export const useCreateNewThread = () => {
     // Default context length is 8192
     const defaultContextLength = Math.min(
       8192,
-      defaultModel?.settings.ctx_len ?? 8192
+      defaultModel?.settings?.ctx_len ?? 8192
     )
 
     const overriddenSettings = {
-      ctx_len: defaultModel?.settings.ctx_len
-        ? Math.min(8192, defaultModel.settings.ctx_len)
+      ctx_len: defaultModel?.settings?.ctx_len
+        ? Math.min(8192, defaultModel?.settings?.ctx_len)
         : undefined,
     }
 
     // Use ctx length by default
     const overriddenParameters = {
       max_tokens: defaultContextLength
         ? Math.min(
-            defaultModel?.parameters.max_tokens ?? 8192,
+            defaultModel?.parameters?.max_tokens ?? 8192,
             defaultContextLength
           )
-        : defaultModel?.parameters.max_tokens,
+        : defaultModel?.parameters?.max_tokens,
     }
 
     const createdAt = Date.now()