feat: add ability to set custom header

Author: marocchino

__tests__/comment.test.ts

@@ -11,23 +11,40 @@ it("findPreviousComment", async () => {
     },
     body: "<!-- Sticky Pull Request Comment -->\nprevious message"
   };
-  const otherComment = {
+  const commentWithCustomHeader = {
     user: {
-      login: "some-user"
+      login: "github-actions[bot]"
     },
-    body: "lgtm"
+    body: "<!-- Sticky Pull Request CommentTypeA -->\nprevious message"
   };
+  const otherComments = [
+    {
+      user: {
+        login: "some-user"
+      },
+      body: "lgtm"
+    },
+    {
+      user: {
+        login: "github-actions[bot]"
+      },
+      body: "<!-- Sticky Pull Request CommentTypeB -->\nprevious message"
+    }
+  ];
   const octokit = {
     issues: {
       listComments: jest.fn(() =>
         Promise.resolve({
-          data: [otherComment, comment]
+          data: [commentWithCustomHeader, comment, ...otherComments]
         })
       )
     }
   };
 
-  expect(await findPreviousComment(octokit, repo, 123)).toBe(comment);
+  expect(await findPreviousComment(octokit, repo, 123, "")).toBe(comment);
+  expect(await findPreviousComment(octokit, repo, 123, "TypeA")).toBe(
+    commentWithCustomHeader
+  );
   expect(octokit.issues.listComments).toBeCalledWith({ issue_number: 123 });
 });
 it("updateComment", async () => {
@@ -37,12 +54,19 @@ it("updateComment", async () => {
     }
   };
   expect(
-    await updateComment(octokit, repo, 456, "hello there")
+    await updateComment(octokit, repo, 456, "hello there", "")
   ).toBeUndefined();
   expect(octokit.issues.updateComment).toBeCalledWith({
     comment_id: 456,
     body: "<!-- Sticky Pull Request Comment -->\nhello there"
   });
+  expect(
+    await updateComment(octokit, repo, 456, "hello there", "TypeA")
+  ).toBeUndefined();
+  expect(octokit.issues.updateComment).toBeCalledWith({
+    comment_id: 456,
+    body: "<!-- Sticky Pull Request CommentTypeA -->\nhello there"
+  });
 });
 it("createComment", async () => {
   const octokit = {
@@ -51,10 +75,17 @@ it("createComment", async () => {
     }
   };
   expect(
-    await createComment(octokit, repo, 456, "hello there")
+    await createComment(octokit, repo, 456, "hello there", "")
   ).toBeUndefined();
   expect(octokit.issues.createComment).toBeCalledWith({
     issue_number: 456,
     body: "<!-- Sticky Pull Request Comment -->\nhello there"
   });
+  expect(
+    await createComment(octokit, repo, 456, "hello there", "TypeA")
+  ).toBeUndefined();
+  expect(octokit.issues.createComment).toBeCalledWith({
+    issue_number: 456,
+    body: "<!-- Sticky Pull Request CommentTypeA -->\nhello there"
+  });
 });

action.yml

@@ -2,6 +2,9 @@ name: "Sticky Pull Request Comment"
 description: "Create comment on pull request, if exists update that comment."
 author: "marocchino"
 inputs:
+  header:
+    description: "Header to determine if the comment is to be updated, not shown on screen"
+    required: false
   message:
     description: "comment message"
     required: true

src/comment.ts

@@ -1,23 +1,26 @@
-const HEADER = "<!-- Sticky Pull Request Comment -->";
-
-export async function findPreviousComment(octokit, repo, issue_number) {
+export async function findPreviousComment(octokit, repo, issue_number, header) {
   const { data: comments } = await octokit.issues.listComments({
     ...repo,
     issue_number
   });
-  return comments.find(comment => comment.body.startsWith(HEADER));
+  const h = headerComment(header);
+  return comments.find(comment => comment.body.startsWith(h));
 }
-export async function updateComment(octokit, repo, comment_id, body) {
+export async function updateComment(octokit, repo, comment_id, body, header) {
   await octokit.issues.updateComment({
     ...repo,
     comment_id,
-    body: `${HEADER}\n${body}`
+    body: `${headerComment(header)}\n${body}`
   });
 }
-export async function createComment(octokit, repo, issue_number, body) {
+export async function createComment(octokit, repo, issue_number, body, header) {
   await octokit.issues.createComment({
     ...repo,
     issue_number,
-    body: `${HEADER}\n${body}`
+    body: `${headerComment(header)}\n${body}`
   });
 }
+
+function headerComment(header) {
+  return `<!-- Sticky Pull Request Comment${header} -->`;
+}

src/main.ts

@@ -14,13 +14,14 @@ async function run() {
   try {
     const repo = context.repo;
     const body = core.getInput("message", { required: true });
+    const header = core.getInput("header", { required: false }) || "";
     const githubToken = core.getInput("GITHUB_TOKEN", { required: true });
     const octokit = new GitHub(githubToken);
-    const previous = await findPreviousComment(octokit, repo, number);
+    const previous = await findPreviousComment(octokit, repo, number, header);
     if (previous) {
-      await updateComment(octokit, repo, previous.id, body);
+      await updateComment(octokit, repo, previous.id, body, header);
     } else {
-      await createComment(octokit, repo, number, body);
+      await createComment(octokit, repo, number, body, header);
     }
   } catch ({ message }) {
     core.setFailed(message);