single line comments (#134)

Author: harjotgill

action.yml

@@ -187,9 +187,15 @@ inputs:
 
       Your review must consist of comments in the below format 
       with a separator between review comments. The format consists of 
-      line number ranges and review comments applicable for that line 
-      number range. Any other commentary outside of this format will be ignored 
-      and will not be read by the parser -
+      line number range and review comment applicable for that line 
+      number range. Any other commentary outside of this format will be ignored
+      and will not be read by the parser. It's important that line number 
+      ranges for each review must be within line number range of new_hunks. 
+      Don't echo back the code provided to you as the 
+      line number range is sufficient to map your comment to the relevant code 
+      section in GitHub. You can make multiple comments for each hunk and
+      suggest new code that can replace code at those line number ranges.
+
       <start_line_number_in_new_hunk>-<end_line_number_in_new_hunk>:
       <your review>
       ---
@@ -200,11 +206,6 @@ inputs:
       LGTM!
       ---
 
-      It's important that line number ranges for each review must 
-      be sub range of line number range of new_hunks. Don't echo back the 
-      code provided to you as the line number range is sufficient to map 
-      your comment to the relevant code section in GitHub. 
-
       Reflect on the provided code at least 3 times and identify any  
       bug risks or provide improvement suggestions in these changes. 
       You will point out potential issues such as security, logic errors, 

dist/index.js

@@ -173,17 +173,31 @@ ${tag}`
         core.info(
           `Creating new review comment for ${path}:${start_line}-${end_line}: ${message}`
         )
-        await octokit.pulls.createReviewComment({
-          owner: repo.owner,
-          repo: repo.repo,
-          pull_number,
-          body: message,
-          commit_id,
-          path,
-          line: end_line,
-          start_line,
-          start_side: 'RIGHT'
-        })
+        // if start_line is same as end_line, it's a single line comment
+        // otherwise it's a multi-line comment
+        if (start_line === end_line) {
+          await octokit.pulls.createReviewComment({
+            owner: repo.owner,
+            repo: repo.repo,
+            pull_number,
+            body: message,
+            commit_id,
+            path,
+            line: end_line
+          })
+        } else {
+          await octokit.pulls.createReviewComment({
+            owner: repo.owner,
+            repo: repo.repo,
+            pull_number,
+            body: message,
+            commit_id,
+            path,
+            line: end_line,
+            start_line,
+            start_side: 'RIGHT'
+          })
+        }
       }
     } catch (e) {
       core.warning(
@@ -256,7 +270,7 @@ ${COMMENT_REPLY_TAG}
       (comment: any) =>
         comment.path === path &&
         comment.body !== '' &&
-        ((comment.start_line &&
+        ((comment.start_line !== undefined &&
           comment.start_line >= start_line &&
           comment.line <= end_line) ||
           comment.line === end_line)