Bugfix/Local Models Json (#2416)

fallback to fetch local models json file

packages/components/src/modelLoader.ts

@@ -1,5 +1,7 @@
 import { INodeOptionsValue } from './Interface'
 import axios from 'axios'
+import * as fs from 'fs'
+import * as path from 'path'
 
 const MASTER_MODEL_LIST = 'https://raw.githubusercontent.com/FlowiseAI/Flowise/main/packages/components/models.json'
 
@@ -9,15 +11,38 @@ export enum MODEL_TYPE {
     EMBEDDING = 'embedding'
 }
 
+const getModelsJSONPath = (): string => {
+    const checkModelsPaths = [path.join(__dirname, '..', 'models.json'), path.join(__dirname, '..', '..', 'models.json')]
+    for (const checkPath of checkModelsPaths) {
+        if (fs.existsSync(checkPath)) {
+            return checkPath
+        }
+    }
+    return ''
+}
+
 const getModelConfig = async (category: MODEL_TYPE, name: string) => {
     const modelFile = process.env.MODEL_LIST_CONFIG_JSON || MASTER_MODEL_LIST
     if (!modelFile) {
         throw new Error('MODEL_LIST_CONFIG_JSON not set')
     }
+    try {
         const resp = await axios.get(modelFile)
+        if (resp.status === 200 && resp.data) {
             const models = resp.data
             const categoryModels = models[category]
-    return categoryModels.find((model: any) => model.name === name)
+            return categoryModels.find((model: INodeOptionsValue) => model.name === name)
+        } else {
+            throw new Error('Error fetching model list')
+        }
+    } catch (e) {
+        const models = await fs.promises.readFile(getModelsJSONPath(), 'utf8')
+        if (models) {
+            const categoryModels = JSON.parse(models)[category]
+            return categoryModels.find((model: INodeOptionsValue) => model.name === name)
+        }
+        return {}
+    }
 }
 
 export const getModels = async (category: MODEL_TYPE, name: string) => {