refactor: 깃헙에 댓글 남기는 방식으로 중복 메시지 없도록 수정

Author: sezeme

.github/workflows/pr_revier_request.yml

@@ -10,58 +10,69 @@ jobs:
       - name: Wait for reviewers to settle
         run: sleep 10
 
+      - name: Check if notification already sent
+        id: check
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          echo "🔍 Checking for existing notification comment..."
+          pr_number="${{ github.event.pull_request.number }}"
+          comment_count=$(gh pr view "$pr_number" --json comments \
+            | jq '[.comments[].body | select(. | contains("[discord-review-notified]"))] | length')
+
+          if [ "$comment_count" -gt 0 ]; then
+            echo "skip=true" >> "$GITHUB_OUTPUT"
+            echo "✅ Notification already sent for PR #$pr_number"
+          else
+            echo "skip=false" >> "$GITHUB_OUTPUT"
+            echo "✅ No notification sent yet for PR #$pr_number"
+          fi
+
       - name: Get unique reviewers
         id: reviewers
+        if: steps.check.outputs.skip == 'false'
         env:
           REVIEWERS_JSON: ${{ toJson(github.event.pull_request.requested_reviewers) }}
         run: |
-          echo "🔍 Extracting unique reviewers..."
           reviewers=$(echo "$REVIEWERS_JSON" | jq -r '.[].login' | sort | uniq | paste -sd "," -)
-          echo "✅ reviewers: $reviewers"
           echo "reviewers=$reviewers" >> "$GITHUB_OUTPUT"
 
       - name: Map to Discord IDs
         id: map
+        if: steps.check.outputs.skip == 'false'
         run: |
-          echo "🔗 Mapping GitHub usernames to Discord IDs..."
           declare -A USER_MAP=(
             ["laggu"]="1269619098405441537"
-            ["sezeme"]="534088965050073089"
             ["rlooo"]="1060181420389187715"
             ["yuchem2"]="307875691074945024"
-            ["chsjen492"]="1021785294078480394"
-            ["HeesooJun"]="347294009548341249"
           )
 
           mentions=""
 
-          # reviewers를 쉼표 기준으로 배열로 다시 split
           IFS="," read -ra reviewers <<< "${{ steps.reviewers.outputs.reviewers }}"
-
           for login in "${reviewers[@]}"; do
             id=${USER_MAP[$login]}
-            if [ -n "$id" ]; then
-              mentions+="<@$id> "
-            else
-              echo "⚠️ No Discord ID mapped for $login"
-            fi
+            [ -n "$id" ] && mentions+="<@$id> "
           done
 
-          echo "✅ mentions: $mentions"
           echo "mentions=$mentions" >> "$GITHUB_OUTPUT"
 
       - name: Send Discord Notification
+        if: steps.check.outputs.skip == 'false'
         env:
           DISCORD_WEBHOOK_URL: ${{ secrets.DISCORD_WEBHOOK_URL }}
           MENTIONS: ${{ steps.map.outputs.mentions }}
           PR_URL: ${{ github.event.pull_request.html_url }}
         run: |
-          echo "🚀 Sending Discord notification..."
           curl -X POST -H "Content-Type: application/json" \
           -d "{
-            \"content\": \"📣 $MENTIONS님! Pull Request 리뷰어로 지정됐습니다.\\n🔗 PR: $PR_URL\",
-            \"allowed_mentions\": {
-              \"parse\": [\"users\"]
-            }
+            \"content\": \"📣 $MENTIONS님! Pull Request 리뷰어로 지정됐습니다.\\n🔗 PR: $PR_URL\"
           }" \
           "$DISCORD_WEBHOOK_URL"
+
+      - name: Mark notification sent
+        if: steps.check.outputs.skip == 'false'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh pr comment ${{ github.event.pull_request.number }} --body "[discord-review-notified] 리뷰 알림 전송됨 ✅"