From bec2a1bd3c52a98c9366e5b474026d90c4866a65 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?T=C3=A9rence=20Hollander?= <terence.hollander@decathlon.com>
Date: Sun, 18 Dec 2022 11:27:32 +0100
Subject: [PATCH] feat: create_if_not_exists (#173)

---
 .github/workflows/ci.yaml | 9 ++++++++-
 README.md                 | 1 +
 action.yml                | 3 +++
 lib/index.js              | 7 ++++++-
 src/main.ts               | 8 +++++++-
 5 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index f6249b67..650e999d 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -26,4 +26,11 @@ jobs:
           filePath: README.md
           comment_tag: nrt_file
           reactions: eyes, rocket
-          mode: recreate
\ No newline at end of file
+          mode: recreate
+
+      - name: Do not comment PR if not exists
+        uses: ./
+        with:
+          message: Should not be printed
+          comment_tag: nrt_create_if_not_exists
+          create_if_not_exists: false
\ No newline at end of file
diff --git a/README.md b/README.md
index d4009462..cf3a9277 100644
--- a/README.md
+++ b/README.md
@@ -105,6 +105,7 @@ Note: the input `mode` can be used to either `upsert` (by default) or `recreate`
 | `pr_number` | The number of the pull request where to create the comment | | current pull-request/issue number (deduced from context) |
 | `comment_tag` | A tag on your comment that will be used to identify a comment in case of replacement | | |
 | `mode` | Mode that will be used to update comment (upsert/recreate) | | upsert |
+| `create_if_not_exists` | Whether a comment should be created even if `comment_tag` is not found | | true |
 
 ## Contributing
 
diff --git a/action.yml b/action.yml
index 9b0eb2b5..41f9a78f 100644
--- a/action.yml
+++ b/action.yml
@@ -21,6 +21,9 @@ inputs:
   mode:
     description: 'Mode that will be used to update comment (upsert/recreate)'
     default: 'upsert'
+  create_if_not_exists:
+    description: 'Whether a comment should be created even if comment_tag is not found.'
+    default: 'true'
 runs:
   using: 'node16'
   main: 'lib/index.js'
diff --git a/lib/index.js b/lib/index.js
index 5a490ef0..e9dbaa90 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -9554,6 +9554,7 @@ async function run() {
         const comment_tag = core.getInput('comment_tag');
         const reactions = core.getInput('reactions');
         const mode = core.getInput('mode');
+        const create_if_not_exists = core.getInput('create_if_not_exists') === 'true';
         if (!message && !filePath) {
             core.setFailed('Either "filePath" or "message" should be provided as input');
             return;
@@ -9631,9 +9632,13 @@ async function run() {
                     return;
                 }
             }
-            else {
+            else if (create_if_not_exists) {
                 core.info('No comment has been found with asked pattern. Creating a new comment.');
             }
+            else {
+                core.info('Not creating comment as the pattern has not been found. Use `create_if_not_exists: true` to create a new comment anyway.');
+                return;
+            }
         }
         const { data: comment } = await octokit.rest.issues.createComment({
             ...context.repo,
diff --git a/src/main.ts b/src/main.ts
index 9115936f..ee9c3057 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -17,6 +17,7 @@ async function run() {
     const comment_tag: string = core.getInput('comment_tag');
     const reactions: string = core.getInput('reactions');
     const mode: string = core.getInput('mode');
+    const create_if_not_exists: boolean = core.getInput('create_if_not_exists') === 'true';
 
     if (!message && !filePath) {
       core.setFailed('Either "filePath" or "message" should be provided as input');
@@ -109,8 +110,13 @@ async function run() {
           core.setFailed(`Mode ${mode} is unknown. Please use 'upsert' or 'recreate'.`);
           return;
         }
-      } else {
+      } else if (create_if_not_exists) {
         core.info('No comment has been found with asked pattern. Creating a new comment.');
+      } else {
+        core.info(
+          'Not creating comment as the pattern has not been found. Use `create_if_not_exists: true` to create a new comment anyway.',
+        );
+        return;
       }
     }