n8n/packages/nodes-base/nodes/LinkedIn/LinkedIn.node.ts
2020-10-01 15:18:47 +02:00

256 lines
7 KiB
TypeScript

import {
BINARY_ENCODING,
IExecuteFunctions,
} from 'n8n-core';
import {
IDataObject,
ILoadOptionsFunctions,
INodeExecutionData,
INodePropertyOptions,
INodeType,
INodeTypeDescription,
} from 'n8n-workflow';
import { linkedInApiRequest } from './GenericFunctions';
import {
postFields,
postOperations,
} from './PostDescription';
export class LinkedIn implements INodeType {
description: INodeTypeDescription = {
displayName: 'LinkedIn',
name: 'linkedIn',
icon: 'file:linkedin.png',
group: ['input'],
version: 1,
description: 'Consume LinkedIn Api',
defaults: {
name: 'LinkedIn',
color: '#0075b4',
},
inputs: ['main'],
outputs: ['main'],
credentials: [
{
name: 'linkedInOAuth2Api',
required: true,
},
],
properties: [
{
displayName: 'Resource',
name: 'resource',
type: 'options',
options: [
{
name: 'Post',
value: 'post',
},
],
default: 'post',
description: 'The resource to consume',
},
//POST
...postOperations,
...postFields,
],
};
methods = {
loadOptions: {
// Get Person URN which has to be used with other LinkedIn API Requests
// https://docs.microsoft.com/en-us/linkedin/consumer/integrations/self-serve/sign-in-with-linkedin
async getPersonUrn(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
const returnData: INodePropertyOptions[] = [];
const person = await linkedInApiRequest.call(this, 'GET', '/me', {});
returnData.push({ name: `${person.localizedFirstName} ${person.localizedLastName}`, value: person.id });
return returnData;
},
}
};
async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
const items = this.getInputData();
const returnData: IDataObject[] = [];
let responseData;
const resource = this.getNodeParameter('resource', 0) as string;
const operation = this.getNodeParameter('operation', 0) as string;
let body = {};
for (let i = 0; i < items.length; i++) {
if (resource === 'post') {
if (operation === 'create') {
const text = this.getNodeParameter('text', i) as string;
const shareMediaCategory = this.getNodeParameter('shareMediaCategory', i) as string;
const postAs = this.getNodeParameter('postAs', i) as string;
const additionalFields = this.getNodeParameter('additionalFields', i) as IDataObject;
let authorUrn = '';
let visibility = 'PUBLIC';
if (postAs === 'person') {
const personUrn = this.getNodeParameter('person', i) as string;
// Only if posting as a person can user decide if post visible by public or connections
visibility = additionalFields.visibility as string || 'PUBLIC';
authorUrn = `urn:li:person:${personUrn}`;
} else {
const organizationUrn = this.getNodeParameter('organization', i) as string;
authorUrn = `urn:li:organization:${organizationUrn}`;
}
let description = '';
let title = '';
let originalUrl = '';
if (shareMediaCategory === 'IMAGE') {
if (additionalFields.description) {
description = additionalFields.description as string;
}
if (additionalFields.title) {
title = additionalFields.title as string;
}
// Send a REQUEST to prepare a register of a media image file
const registerRequest = {
registerUploadRequest: {
recipes: [
'urn:li:digitalmediaRecipe:feedshare-image',
],
owner: authorUrn,
serviceRelationships: [
{
relationshipType: 'OWNER',
identifier: 'urn:li:userGeneratedContent',
},
],
},
};
const registerObject = await linkedInApiRequest.call(this, 'POST', '/assets?action=registerUpload', registerRequest);
// Response provides a specific upload URL that is used to upload the binary image file
const uploadUrl = registerObject.value.uploadMechanism['com.linkedin.digitalmedia.uploading.MediaUploadHttpRequest'].uploadUrl as string;
const asset = registerObject.value.asset as string;
// Prepare binary file upload
const item = items[i];
if (item.binary === undefined) {
throw new Error('No binary data exists on item!');
}
const propertyNameUpload = this.getNodeParameter('binaryPropertyName', i) as string;
if (item.binary[propertyNameUpload] === undefined) {
throw new Error(`No binary data property "${propertyNameUpload}" does not exists on item!`);
}
// Buffer binary data
const buffer = Buffer.from(item.binary[propertyNameUpload].data, BINARY_ENCODING) as Buffer;
// Upload image
await linkedInApiRequest.call(this, 'POST', uploadUrl, buffer, true);
body = {
author: authorUrn,
lifecycleState: 'PUBLISHED',
specificContent: {
'com.linkedin.ugc.ShareContent': {
shareCommentary: {
text,
},
shareMediaCategory: 'IMAGE',
media: [
{
status: 'READY',
description: {
text: description,
},
media: asset,
title: {
text: title,
},
},
],
},
},
visibility: {
'com.linkedin.ugc.MemberNetworkVisibility': visibility,
},
};
} else if (shareMediaCategory === 'ARTICLE') {
const additionalFields = this.getNodeParameter('additionalFields', i) as IDataObject;
if (additionalFields.description) {
description = additionalFields.description as string;
}
if (additionalFields.title) {
title = additionalFields.title as string;
}
if (additionalFields.originalUrl) {
originalUrl = additionalFields.originalUrl as string;
}
body = {
author: `${authorUrn}`,
lifecycleState: 'PUBLISHED',
specificContent: {
'com.linkedin.ugc.ShareContent': {
shareCommentary: {
text,
},
shareMediaCategory,
media: [
{
status: 'READY',
description: {
text: description
},
originalUrl,
title: {
text: title
}
}
]
}
},
visibility: {
'com.linkedin.ugc.MemberNetworkVisibility': visibility
}
};
} else {
body = {
author: authorUrn,
lifecycleState: 'PUBLISHED',
specificContent: {
'com.linkedin.ugc.ShareContent': {
shareCommentary: {
text,
},
shareMediaCategory,
},
},
visibility: {
'com.linkedin.ugc.MemberNetworkVisibility': visibility
}
};
}
const endpoint = '/ugcPosts';
responseData = await linkedInApiRequest.call(this, 'POST', endpoint, body);
}
}
if (Array.isArray(responseData)) {
returnData.push.apply(returnData, responseData as IDataObject[]);
} else {
returnData.push(responseData as IDataObject);
}
}
return [this.helpers.returnJsonArray(returnData)];
}
}