fix: only comment about no contributions after checking all contribut…

…ors (#489)

**What**: Fixes #468.

<!-- Why are these changes necessary? -->
**Why**: Currently, the bot comments _"I couldn't determine ..."_ as
soon as a potential contributor is found to not have any contributions.
But if there are multiple potential contributors, that comment shouldn't
happen.

<!-- How were these changes implemented? -->
**How**: With these changes, the comment is only added after all
potential contributors are checked for sending a PR.

<!-- Have you done all of these things?  -->
**Checklist**:
<!-- add "N/A" to the end of each line that's irrelevant to your changes
-->
<!-- to check an item, place an "x" in the box like so: "- [x]
Documentation" -->
- [x] Documentation _(n/a for bug fix)_
- [x] Ready to be merged <!-- In your opinion, is this ready to be
merged as soon as it's reviewed? -->
- ~[ ] Added myself to contributors table.~

lib/process-issue-comment.js

@@ -25,6 +25,8 @@ async function processIssueComment({ context, commentReply }) {
     return;
   }
 
+  let pullCreated = false;
+
   for (var contributor in contributors) {
     const who = contributor;
     const contributions = contributors[who];
@@ -45,7 +47,7 @@ async function processIssueComment({ context, commentReply }) {
       success: false,
     });
 
-    await triggerActionAdd(
+    pullCreated ||= await triggerActionAdd(
       context,
       commentReply,
       log,
@@ -54,6 +56,13 @@ async function processIssueComment({ context, commentReply }) {
       branchName
     );
   }
+
+  if (!pullCreated) {
+    commentReply.reply(
+      `I couldn't determine any contributions to add, did you specify any contributions?
+        Please make sure to use [valid contribution names](https://allcontributors.org/docs/en/emoji-key).`
+    );
+  }
 }
 
 async function triggerActionAdd(
@@ -65,12 +74,8 @@ async function triggerActionAdd(
   branchName
 ) {
   if (contributions.length === 0) {
-    log.info("No contributions");
-    commentReply.reply(
-      `I couldn't determine any contributions to add, did you specify any contributions?
-          Please make sure to use [valid contribution names](https://allcontributors.org/docs/en/emoji-key).`
-    );
-    return;
+    log.info(`No contributions for ${who}`);
+    return false;
   }
 
   // set up repository instance. Uses branch if it exists, falls back to repository's default branch
@@ -100,17 +105,17 @@ async function triggerActionAdd(
       },
       `${who} already have ${contributions.join(", ")}`
     );
-    return;
+  } else {
+    log.info(
+      {
+        pullCreated,
+        success: true,
+        createdFor: user.id,
+        createdForType: "user",
+        createdForLogin: user.login.toLowerCase(),
+      },
+      `${who} added for ${contributions.join(", ")}`
+    );
   }
-
-  log.info(
-    {
-      pullCreated,
-      success: true,
-      createdFor: user.id,
-      createdForType: "user",
-      createdForLogin: user.login.toLowerCase(),
-    },
-    `${who} added for ${contributions.join(", ")}`
-  );
+  return true;
 }

test/fixtures/issue_comment.created.json

@@ -79,7 +79,7 @@
     "created_at": "2019-01-10T08:36:52Z",
     "updated_at": "2019-01-10T08:36:52Z",
     "author_association": "MEMBER",
-    "body": "@all-contributors please add jakebolam for code, doc and infra"
+    "body": "@all-contributors please add jakebolam for code, doc and infra\n🤖 Beep boop! This comment was added automatically by [all-contributors-auto-action](https://github.com/marketplace/actions/all-contributors-auto-action).\nNot all contributions can be detected from Git & GitHub alone. Please comment any missing contribution types this bot missed.\n...and of course, thank you for contributing! 💙"
   },
   "repository": {
     "id": 164268911,