test : link pr review and discord

.github/workflows/pr_revier_request.yml

@@ -0,0 +1,78 @@
+on:
+  pull_request:
+    types: [review_requested]
+
+jobs:
+  notify:
+    runs-on: ubuntu-latest
+
+    steps:
+      - 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: ${{ toJson(github.event.pull_request.requested_reviewers) }}
+        run: |
+          reviewers=$(echo "$REVIEWERS_JSON" | jq -r '.[].login' | sort | uniq | paste -sd "," -)
+          echo "reviewers=$reviewers" >> "$GITHUB_OUTPUT"
+
+      - name: Map to Discord IDs
+        id: map
+        if: steps.check.outputs.skip == 'false'
+        run: |
+          declare -A USER_MAP=(
+            ["laggu"]="1269619098405441537"
+            ["rlooo"]="1060181420389187715"
+            ["yuchem2"]="307875691074945024"
+          )
+
+          mentions=""
+
+          IFS="," read -ra reviewers <<< "${{ steps.reviewers.outputs.reviewers }}"
+          for login in "${reviewers[@]}"; do
+            id=${USER_MAP[$login]}
+            [ -n "$id" ] && mentions+="<@$id> "
+          done
+
+          echo "mentions=$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: |
+          curl -X POST -H "Content-Type: application/json" \
+          -d "{
+            \"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 ✅"