From 1cfcb23af5b9fbff1496ec5f0400d54f498c3209 Mon Sep 17 00:00:00 2001
From: marocchino <marocchino@users.noreply.github.com>
Date: Sat, 23 Nov 2019 10:47:42 +0900
Subject: [PATCH] build: comment header

---
 lib/comment.js | 31 +++++++++++++++++++++++++++++++
 lib/main.js    | 19 +++++++++----------
 2 files changed, 40 insertions(+), 10 deletions(-)
 create mode 100644 lib/comment.js

diff --git a/lib/comment.js b/lib/comment.js
new file mode 100644
index 0000000..e287e6b
--- /dev/null
+++ b/lib/comment.js
@@ -0,0 +1,31 @@
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const HEADER = "<!-- Sticky Pull Request Comment -->";
+function findPreviousComment(octokit, repo, issue_number) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const { data: comments } = yield octokit.issues.listComments(Object.assign(Object.assign({}, repo), { issue_number }));
+        return comments.find(comment => comment.body.startsWith(HEADER));
+    });
+}
+exports.findPreviousComment = findPreviousComment;
+function updateComment(octokit, repo, comment_id, body) {
+    return __awaiter(this, void 0, void 0, function* () {
+        yield octokit.issues.updateComment(Object.assign(Object.assign({}, repo), { comment_id, body: `${HEADER}\n${body}` }));
+    });
+}
+exports.updateComment = updateComment;
+function createComment(octokit, repo, issue_number, body) {
+    return __awaiter(this, void 0, void 0, function* () {
+        yield octokit.issues.createComment(Object.assign(Object.assign({}, repo), { issue_number, body: `${HEADER}\n${body}` }));
+    });
+}
+exports.createComment = createComment;
diff --git a/lib/main.js b/lib/main.js
index 3f28aa8..c6d36b6 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -18,31 +18,30 @@ var __importStar = (this && this.__importStar) || function (mod) {
 Object.defineProperty(exports, "__esModule", { value: true });
 const core = __importStar(require("@actions/core"));
 const github_1 = require("@actions/github");
+const comment_1 = require("./comment");
 function run() {
     var _a, _b, _c;
     return __awaiter(this, void 0, void 0, function* () {
         try {
             const repo = github_1.context.repo;
-            const issue_number = (_c = (_b = (_a = github_1.context) === null || _a === void 0 ? void 0 : _a.payload) === null || _b === void 0 ? void 0 : _b.pull_request) === null || _c === void 0 ? void 0 : _c.number;
-            if (!issue_number) {
+            const number = (_c = (_b = (_a = github_1.context) === null || _a === void 0 ? void 0 : _a.payload) === null || _b === void 0 ? void 0 : _b.pull_request) === null || _c === void 0 ? void 0 : _c.number;
+            const body = core.getInput("message");
+            const githubToken = core.getInput("GITHUB_TOKEN");
+            if (!number) {
                 core.setFailed("This action only works for pull_request");
                 return;
             }
-            const body = core.getInput("message");
-            const githubToken = core.getInput("GITHUB_TOKEN");
             if (!body || !githubToken) {
                 core.setFailed("invalid input: please check your workflow");
                 return;
             }
             const octokit = new github_1.GitHub(githubToken);
-            const { data: comments } = yield octokit.issues.listComments(Object.assign(Object.assign({}, repo), { issue_number }));
-            const myComment = comments.find(comment => comment.user.login === "github-actions[bot]");
-            if (myComment) {
-                yield octokit.issues.updateComment(Object.assign(Object.assign({}, repo), { comment_id: myComment.id, body }));
+            const previous = yield comment_1.findPreviousComment(octokit, repo, number);
+            if (previous) {
+                yield comment_1.updateComment(octokit, repo, previous.id, body);
             }
             else {
-                yield octokit.issues.createComment(Object.assign(Object.assign({}, repo), { issue_number,
-                    body }));
+                yield comment_1.createComment(octokit, repo, number, body);
             }
         }
         catch ({ message }) {