Auto Post In Linkedin

/**
 * Main function to register, upload, and post an image to LinkedIn
 */
function uploadImageToLinkedIn() {
  const accessToken = 'YOUR_ACCESS_TOKEN_HERE'; // Replace with your LinkedIn access token
  const profileId = 'urn:li:person:YOUR_PROFILE_ID'; // Replace with your LinkedIn profile ID

  // Step 1: Register the upload
  const registerUploadUrl = 'https://api.linkedin.com/v2/assets?action=registerUpload';
  const payload = {
    registerUploadRequest: {
      recipes: ["urn:li:digitalmediaRecipe:feedshare-image"],
      owner: profileId,
      serviceRelationships: [
        { relationshipType: "OWNER", identifier: "urn:li:userGeneratedContent" }
      ]
    }
  };

  const options = {
    method: 'post',
    headers: {
      Authorization: 'Bearer ' + accessToken,
      'Content-Type': 'application/json',
      'X-Restli-Protocol-Version': '2.0.0'
    },
    payload: JSON.stringify(payload)
  };

  const response = UrlFetchApp.fetch(registerUploadUrl, options);
  const responseData = JSON.parse(response.getContentText());

  const uploadUrlFromResponse = responseData.value.uploadMechanism['com.linkedin.digitalmedia.uploading.MediaUploadHttpRequest'].uploadUrl;
  const asset = responseData.value.asset;

  Logger.log('Upload URL: ' + uploadUrlFromResponse);
  Logger.log('Asset URN: ' + asset);

  // Step 2: Upload the image to LinkedIn
  uploadImageToLinkedInEndpoint(uploadUrlFromResponse, asset, accessToken, profileId);
}

/**
 * Upload the image file to LinkedIn using the registered upload URL
 */
function uploadImageToLinkedInEndpoint(uploadUrl, asset, accessToken, profileId) {
  const imageUrl = 'https://images.freeimages.com/images/large-previews/3ff/chain-link-fence-1187948.jpg'; // Image to upload
  const imageBlob = UrlFetchApp.fetch(imageUrl).getBlob();

  const options = {
    method: 'put',
    headers: {
      Authorization: 'Bearer ' + accessToken,
      'Content-Type': imageBlob.getContentType()
    },
    payload: imageBlob
  };

  const response = UrlFetchApp.fetch(uploadUrl, options);
  Logger.log('Upload response: ' + response.getContentText());

  // Step 3: Post the uploaded image to LinkedIn feed
  postImageToLinkedIn(asset, accessToken, profileId);
}

/**
 * Create a LinkedIn post using the uploaded image
 */
function postImageToLinkedIn(asset, accessToken, profileId) {
  const postUrl = 'https://api.linkedin.com/v2/ugcPosts';

  const payload = {
    author: profileId,
    lifecycleState: 'PUBLISHED',
    specificContent: {
      'com.linkedin.ugc.ShareContent': {
        shareCommentary: { text: 'Hello Rajnish' },
        shareMediaCategory: 'IMAGE',
        media: [{
          status: 'READY',
          description: { text: 'Description of the image' },
          media: asset,
          title: { text: 'Title of the image' }
        }]
      }
    },
    visibility: { 'com.linkedin.ugc.MemberNetworkVisibility': 'PUBLIC' }
  };

  const options = {
    method: 'post',
    headers: {
      Authorization: 'Bearer ' + accessToken,
      'Content-Type': 'application/json',
      'X-Restli-Protocol-Version': '2.0.0'
    },
    payload: JSON.stringify(payload)
  };

  const response = UrlFetchApp.fetch(postUrl, options);
  Logger.log('Post response: ' + response.getContentText());
}