feat: 新增檢查後端和前端變更的工作流程，優化部署條件

.github/workflows/main.yml

@@ -6,8 +6,36 @@ on:
       - main
 
 jobs:
+  # Check for changes in backend and frontend
+  check-diff:
+    runs-on: ubuntu-latest
+    outputs:
+      backend_changed: ${{ steps.check_backend.outputs.changed }}
+      frontend_changed: ${{ steps.check_frontend.outputs.changed }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Check if backend has changes
+        id: check_backend
+        run: |
+          if git diff --quiet HEAD^ HEAD -- ./app; then
+            echo "changed=false" >> $GITHUB_OUTPUT
+          else
+            echo "changed=true" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Check if frontend has changes
+        id: check_frontend
+        run: |
+          if git diff --quiet HEAD^ HEAD -- ./frontend; then
+            echo "changed=false" >> $GITHUB_OUTPUT
+          else
+            echo "changed=true" >> $GITHUB_OUTPUT
+          fi
+
   # Backend build and push job
   backend:
+    if: needs.check-diff.outputs.backend_changed == 'true'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -33,8 +61,9 @@ jobs:
           cache-from: type=registry,ref=hanshino/redive_backend:buildcache
           cache-to: type=registry,ref=hanshino/redive_backend:buildcache,mode=max
 
-  # Frontend build and push job, executed in parallel with backend
+  # Frontend build and push job
   frontend:
+    if: needs.check-diff.outputs.frontend_changed == 'true'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -62,10 +91,11 @@ jobs:
           build-args: |
             REACT_APP_GOOGLE_ANALYTICS_ID=${{ secrets.GOOGLE_ANALYTICS_ID }}
 
-  # Deployment job, dependent on both backend and frontend build completion
+  # Deployment job
   deploy:
     runs-on: ubuntu-latest
     needs: [backend, frontend] # Ensure that both backend and frontend jobs are finished before deploying
+    if: needs.backend.result == 'success' || needs.frontend.result == 'success'
     steps:
       - name: Deploy Redive linebot
         uses: appleboy/[email protected]
@@ -83,4 +113,4 @@ jobs:
           DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
         uses: Ilshidur/action-discord@master
         with:
-          args: "{{ EVENT_PAYLOAD.repository.full_name }} 已完成部署"
+          args: "{{ github.repository }} deployment complete."