From 402f5792f0c15655abda1c4f60002a1fc6f5609f Mon Sep 17 00:00:00 2001
From: Nicolas Bonamy <nicolas@Bonamy.fr>
Date: Wed, 15 May 2024 09:21:33 -0500
Subject: [PATCH] gemini flash support

---
 src/services/google.ts | 34 +++++++++++++++++++++++-----------
 1 file changed, 23 insertions(+), 11 deletions(-)

diff --git a/src/services/google.ts b/src/services/google.ts
index 3823cad..2daa448 100644
--- a/src/services/google.ts
+++ b/src/services/google.ts
@@ -1,10 +1,10 @@
 
 import { Message } from '../types/index.d'
-import { LLmCompletionPayload, LlmChunk, LlmCompletionOpts, LlmResponse, LlmStream, LlmToolCall, LlmEventCallback } from '../types/llm.d'
 import { EngineConfig, Configuration } from '../types/config.d'
-import LlmEngine from './engine'
-import { ChatSession, Content, EnhancedGenerateContentResponse, GenerativeModel, GoogleGenerativeAI, Part } from '@google/generative-ai'
+import { LLmCompletionPayload, LlmChunk, LlmCompletionOpts, LlmResponse, LlmStream, LlmToolCall, LlmEventCallback } from '../types/llm.d'
+import { ChatSession, Content, EnhancedGenerateContentResponse, GenerativeModel, GoogleGenerativeAI, ModelParams, Part } from '@google/generative-ai'
 import { getFileContents } from './download'
+import LlmEngine from './engine'
 
 export const isGoogleReady = (engineConfig: EngineConfig): boolean => {
   return engineConfig.apiKey?.length > 0
@@ -28,7 +28,7 @@ export default class extends LlmEngine {
   }
 
   getVisionModels(): string[] {
-    return ['models/gemini-1.5-pro-latest', 'models/gemini-pro-vision', '*vision*']
+    return ['gemini-1.5-flash-latest', 'models/gemini-1.5-pro-latest', 'models/gemini-pro-vision', '*vision*']
   }
 
   isVisionModel(model: string): boolean {
@@ -49,7 +49,7 @@ export default class extends LlmEngine {
     // do it
     return [
       { id: 'models/gemini-1.5-pro-latest', name: 'Gemini 1.5 Pro' },
-      //{ id: 'gemini-1.5-flash', name: 'Gemini  1.5 Flash' },
+      { id: 'gemini-1.5-flash-latest', name: 'Gemini  1.5 Flash' },
       { id: 'models/gemini-pro', name: 'Gemini 1.0 Pro' },
       //{ id: 'models/gemini-pro-vision', name: 'Gemini Pro Vision' },
     ]
@@ -102,18 +102,30 @@ export default class extends LlmEngine {
   getModel(model: string, instructions: string): GenerativeModel {
 
     // not all models have all features
-    const hasInstructions = !(['models/gemini-pro'].includes(model))
+    const hasInstructions = !(['models/gemini-pro', 'gemini-1.5-flash'].includes(model))
     const hasTools = false
 
-    return this.client.getGenerativeModel({
+    // model params
+    const modelParams: ModelParams = {
       model: model,
-      systemInstruction: hasInstructions ? instructions : null,
-      tools: hasTools ? [{
+    }
+
+    // add instructions
+    if (hasInstructions) {
+      modelParams.systemInstruction = instructions
+    }
+
+    // add tools
+    if (hasTools) {
+      modelParams.tools = [{
         functionDeclarations: this.getAvailableTools().map((tool) => {
           return tool.function
         })
-      }] : null,
-    }, {
+      }]
+    }
+
+    // call
+    return this.client.getGenerativeModel( modelParams, {
       apiVersion: 'v1beta'
     })
   }