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import { INode, INodeData, INodeParams } from '../../../src/Interface'
import { OpenApiToolkit } from 'langchain/agents'
import { JsonSpec, JsonObject } from 'langchain/tools'
import { BaseLanguageModel } from 'langchain/base_language'
import { load } from 'js-yaml'
class OpenAPIToolkit_Tools implements INode {
label: string
name: string
description: string
type: string
icon: string
category: string
baseClasses: string[]
inputs: INodeParams[]
constructor() {
this.label = 'OpenAPI Toolkit'
this.name = 'openAPIToolkit'
this.type = 'OpenAPIToolkit'
this.icon = 'openapi.png'
this.category = 'Tools'
this.description = 'Load OpenAPI specification'
this.inputs = [
{
label: 'OpenAI API Key',
name: 'openAIApiKey',
type: 'password'
},
{
label: 'Language Model',
name: 'model',
type: 'BaseLanguageModel'
},
{
label: 'YAML File',
name: 'yamlFile',
type: 'file',
fileType: '.yaml'
}
]
this.baseClasses = [this.type, 'Tool']
}
async init(nodeData: INodeData): Promise<any> {
const openAIApiKey = nodeData.inputs?.openAIApiKey as string
const model = nodeData.inputs?.model as BaseLanguageModel
const yamlFileBase64 = nodeData.inputs?.yamlFile as string
const splitDataURI = yamlFileBase64.split(',')
splitDataURI.pop()
const bf = Buffer.from(splitDataURI.pop() || '', 'base64')
const utf8String = bf.toString('utf-8')
const data = load(utf8String) as JsonObject
if (!data) {
throw new Error('Failed to load OpenAPI spec')
}
const headers = {
'Content-Type': 'application/json',
Authorization: `Bearer ${openAIApiKey}`
}
const toolkit = new OpenApiToolkit(new JsonSpec(data), model, headers)
return toolkit.tools
}
}
module.exports = { nodeClass: OpenAPIToolkit_Tools }
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