Merge pull request #7 from Arisamiga/lastpost-file

Addition of Lastpost file

README.md

@@ -36,11 +36,15 @@ jobs:
           embed_image: # Url of embed image
 ```
 
-Add on the above `feed_list` your own RSS feed URL.
-
-Add on the above `ln_access_token` your LinkedIn Access Token.
-
-(Optional) Add a url of a image on `embed_image` that you would like to use as a image in your embed
+| Parameter         | Required | Description                                                  | Default                            |
+| ----------------- | -------- | ------------------------------------------------------------ | ---------------------------------- |
+| `feed_list`       | ✓        | Your own RSS feed URL                                        | (No Default URL)                   |
+| `ln_access_token` | ✓        | Your LinkedIn Access Token                                   | (No Default Access Token)          |
+| `embed_image`     | X        | The URL of the image you want to use in the embed.           | (No Default URL)                   |
+| `last_post_path`  | X        | The path to the file you want to use to store the last post. | `.github/.lastPost.txt`            |
+| `commit_user`     | X        | The username of the commiter.                                | `Linkedin-Post-Action`             |
+| `commit_email`    | X        | The email of the commiter.                                   | `linkedin-post-action@example.com` |
+| `commit_message`  | X        | The commit message.                                          | `Update Last Post File`            |
 
 ## How to get your LinkedIn Access Token
 

action.yml

@@ -5,12 +5,28 @@ inputs:
   feed_list: # Url of RSS
     description: "RSS Link"
     required: true
-  ln_access_token: # Url of LinkedIn Access Token
+  ln_access_token: # LinkedIn Access Token
     description: "LinkedIn Access Token | Can be Generated at (https://www.linkedin.com/developers/tools/oauth/)"
     required: true
   embed_image: # Url of embed image
     description: "Url Of image to be used as a embed image on the post"
     required: false
+  last_post_path: # Path to the file that stores the last post (Default: .github/.lastPost.txt)
+    description: "Path to the file that stores the last post"
+    default: ".github/.lastPost.txt"
+    required: false
+  commit_user: # Username of the commiter
+    description: "Username of commit user"
+    default: "Linkedin-Post-Action"
+    required: false
+  commit_email: # Email of the commiter
+    description: "Email of commit user"
+    default: "linkedin-post-action@example.com"
+    required: false
+  commit_message: # Commit message
+    description: "Commit message"
+    default: "Update Last Post File"
+    required: false
 runs:
   using: "node16"
   main: "dist/index.js"

index.js

@@ -8,6 +8,11 @@ const https = require("https");
 const accessToken = core.getInput("ln_access_token");
 const feedList = core.getInput("feed_list");
 const embedImage = core.getInput("embed_image");
+const lastPostPath = core.getInput("last_post_path");
+
+const commitUser = core.getInput("commit_user");
+const commitEmail = core.getInput("commit_email");
+const commitMessage = core.getInput("commit_message");
 
 // Get LinkedIn ID, i.e. ownerId
 function getLinkedinId(accessToken) {
@@ -40,6 +45,51 @@ function getLinkedinId(accessToken) {
   });
 }
 
+// Check if post has already been published
+function wasPostPublished(feed) {
+  // Read .lastPost file in .github/workflows/ to check if the post has been posted
+  const fs = require("fs");
+  const path = require("path");
+  const lastPost = path.join(process.env.GITHUB_WORKSPACE, lastPostPath);
+
+  let lastPostContent = "";
+  try {
+    lastPostContent = fs.readFileSync(lastPost, "utf8");
+  } catch (e) {
+    console.log("No .lastPost.txt file found");
+
+    // Create directories if they dont exist
+    fs.mkdirSync(path.dirname(lastPost), { recursive: true });
+
+    // Create file if it doesn't exist
+    fs.writeFileSync(lastPost, "");
+  }
+  // If the post has been posted, skip
+  if (lastPostContent === feed.items[0].link) {
+    console.log("Post already posted");
+    return true;
+  }
+  // If the post has not been posted, post
+  fs.writeFileSync(lastPost, feed.items[0].link);
+
+  return false;
+}
+
+function pushPastFile() {
+  // push the file changes to repository
+  const { exec } = require("child_process");
+
+  exec("git config --global user.email " + commitEmail);
+
+  exec("git config --global user.name " + commitUser);
+
+  exec("git add .");
+
+  exec("git commit -m '" + commitMessage + "'");
+
+  exec("git push");
+}
+
 // Publish content on LinkedIn
 function postShare(
   accessToken,
@@ -132,6 +182,13 @@ try {
     console.log(feed.title);
     getLinkedinId(accessToken)
       .then((ownerId) => {
+        const pastPostCheck = wasPostPublished(feed);
+        if (pastPostCheck) {
+          core.warning("Post was already published");
+          core.warning("Ending job because post was already published");
+          return;
+        }
+
         postShare(
           accessToken,
           ownerId,
@@ -146,8 +203,13 @@ try {
               core.setFailed(
                 "Failed to post on LinkedIn, please check your access token is valid"
               );
+              return;
             } else if (r.status !== 201) {
               core.setFailed("Failed to post on LinkedIn");
+              return;
+            }
+            if (!pastPostCheck) {
+              pushPastFile();
             }
           })
           .catch((e) => console.log(e));

package.json

@@ -1,6 +1,6 @@
 {
   "name": "linkedin-rss",
-  "version": "1.0.0",
+  "version": "1.3.0",
   "description": "",
   "main": "index.js",
   "scripts": {