[Feature] added Jina AI Embedding support (#3355)

* added Jina AI Embedding support

* Update JinaAIEmbedding.ts

Change model name to string type

* removed jina embeddings

* lint fix

---------

Co-authored-by: Henry Heng <henryheng@flowiseai.com>

packages/components/credentials/JinaApi.credential.ts

@@ -0,0 +1,25 @@
+import { INodeParams, INodeCredential } from '../src/Interface'
+
+class JinaAICredential implements INodeCredential {
+    label: string
+    name: string
+    version: number
+    description: string
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'JinaAI API'
+        this.name = 'jinaAIApi'
+        this.version = 1.0
+        this.description = 'You can get your API key from official <a target="_blank" href="https://jina.ai/">console</a> here.'
+        this.inputs = [
+            {
+                label: 'JinaAI API Key',
+                name: 'jinaAIAPIKey',
+                type: 'password'
+            }
+        ]
+    }
+}
+
+module.exports = { credClass: JinaAICredential }

packages/components/nodes/embeddings/JinaAIEmbedding/JinaAIEmbedding.ts

@@ -0,0 +1,58 @@
+import { ICommonObject, INode, INodeData, INodeParams } from '../../../src/Interface'
+import { getBaseClasses, getCredentialData, getCredentialParam } from '../../../src/utils'
+import { JinaEmbeddings, JinaEmbeddingsParams } from '@langchain/community/embeddings/jina'
+
+class JinaAIEmbedding_Embeddings implements INode {
+    label: string
+    name: string
+    version: number
+    type: string
+    icon: string
+    category: string
+    description: string
+    baseClasses: string[]
+    credential: INodeParams
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'Jina Embeddings'
+        this.name = 'jinaEmbeddings'
+        this.version = 1.0
+        this.type = 'JinaEmbeddings'
+        this.icon = 'JinaAIEmbedding.svg'
+        this.category = 'Embeddings'
+        this.description = 'JinaAI API to generate embeddings for a given text'
+        this.baseClasses = [this.type, ...getBaseClasses(JinaEmbeddings)]
+        this.credential = {
+            label: 'Connect Credential',
+            name: 'credential',
+            type: 'credential',
+            credentialNames: ['jinaAIApi']
+        }
+        this.inputs = [
+            {
+                label: 'Model Name',
+                name: 'modelName',
+                type: 'string',
+                default: 'jina-embeddings-v2-base-en',
+                description: 'Refer to <a href="https://jina.ai/embeddings/" target="_blank">JinaAI documentation</a> for available models'
+            }
+        ]
+    }
+
+    async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
+        const modelName = nodeData.inputs?.modelName as string
+        const credentialData = await getCredentialData(nodeData.credential ?? '', options)
+        const apiKey = getCredentialParam('jinaAIAPIKey', credentialData, nodeData)
+
+        const obj: JinaEmbeddingsParams = {
+            apiKey: apiKey,
+            model: modelName
+        }
+
+        const model = new JinaEmbeddings(obj)
+        return model
+    }
+}
+
+module.exports = { nodeClass: JinaAIEmbedding_Embeddings }