fix: fix GeminiProvdier config tools has empty array or object make request 400 (#3090)

Co-authored-by: archer <archer@gmail.com>

src/renderer/src/providers/GeminiProvider.ts

@@ -27,6 +27,7 @@ import OpenAI from 'openai'
 
 import { CompletionsParams } from '.'
 import BaseProvider from './BaseProvider'
+import { filterInvalidTools } from './geminiToolUtils'
 import {
   callMCPTool,
   filterMCPTools,
@@ -181,7 +182,6 @@ export default class GeminiProvider extends BaseProvider {
       {
         model: model.id,
         systemInstruction: assistant.prompt,
-        tools: tools.length > 0 ? tools : undefined,
         safetySettings: this.getSafetySettings(model.id),
         generationConfig: {
           maxOutputTokens: maxTokens,
@@ -192,6 +192,10 @@ export default class GeminiProvider extends BaseProvider {
       },
       this.requestOptions
     )
+    const filteredTools = filterInvalidTools(geminiModel.tools)
+    if (!isEmpty(filteredTools)) {
+      geminiModel.tools = filteredTools
+    }
 
     const chat = geminiModel.startChat({ history })
     const messageContents = await this.getMessageContents(userLastMessage!)

src/renderer/src/providers/geminiToolUtils.ts

@@ -0,0 +1,31 @@
+import { CodeExecutionTool, FunctionDeclarationsTool, GoogleSearchRetrievalTool, Tool } from '@google/generative-ai'
+import { isEmpty } from 'lodash'
+
+export function filterInvalidTools(tools: Tool[] | undefined) {
+  return tools?.filter((e) => !isToolInvalid(e)) ?? []
+}
+
+function isToolInvalid(tool: Tool | undefined) {
+  if (tool == undefined) return true
+  if (isCodeExecutionTool(tool)) {
+    return isEmpty(tool.codeExecution)
+  } else if (isGoogleSearchRetrievalTool(tool)) {
+    return isEmpty(tool.googleSearchRetrieval)
+  } else if (isFunctionDeclarationsTool(tool)) {
+    return isEmpty(tool.functionDeclarations)
+  } else {
+    return true
+  }
+}
+
+function isCodeExecutionTool(tool: Tool): tool is CodeExecutionTool {
+  return (tool as CodeExecutionTool).codeExecution !== undefined
+}
+
+function isGoogleSearchRetrievalTool(tool: Tool): tool is GoogleSearchRetrievalTool {
+  return (tool as GoogleSearchRetrievalTool).googleSearchRetrieval !== undefined
+}
+
+function isFunctionDeclarationsTool(tool: Tool): tool is FunctionDeclarationsTool {
+  return (tool as FunctionDeclarationsTool).functionDeclarations !== undefined
+}