[workflows]: Only run tests and deploy if Python files changed

.github/workflows/ci.yml

@@ -9,7 +9,31 @@ on:
       - main
 
 jobs:
+  check_python_changes:
+    runs-on: ubuntu-latest
+    outputs:
+      run_tests: ${{ steps.check_files.outputs.run_tests }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Check if Python files changed
+        id: check_files
+        run: |
+          git fetch origin ${{ github.event.before }}
+          if git diff --name-only ${{ github.event.before }} ${{ github.sha }} | grep -q '\.py$'; then
+            echo "Python files changed"
+            echo "run_tests=true" >> $GITHUB_ENV
+            echo "::set-output name=run_tests::true"
+          else
+            echo "No Python files changed, skipping tests"
+            echo "run_tests=false" >> $GITHUB_ENV
+            echo "::set-output name=run_tests::false"
+
   test:
+    needs: check_python_changes
+    if: needs.check_python_changes.outputs.run_tests == 'true'
     runs-on: ubuntu-latest
 
     strategy:
@@ -30,14 +54,6 @@ jobs:
           python -m pip install --upgrade pip
           pip install -r server/src/requirements.txt
 
-      - name: Configure AWS Credentials for Tests
-        run: |
-          echo "Setting AWS region and mock credentials..."
-          export AWS_REGION=us-east-1
-          export AWS_ACCESS_KEY_ID=fake_access_key
-          export AWS_SECRET_ACCESS_KEY=fake_secret_key
-          export AWS_DEFAULT_REGION=us-east-1
-
       - name: Run tests with coverage
         run: |
           export PYTHONPATH=$(pwd)/server/src
@@ -60,11 +76,10 @@ jobs:
       - name: Show coverage summary
         run: cat coverage.xml
 
-
   deploy:
-    needs: test  # Ensures deployment happens only if tests pass
+    needs: test
+    if: success() || needs.check_python_changes.outputs.run_tests == 'false'  # Deploy if tests pass OR no Python changes
     runs-on: ubuntu-latest
-    if: github.ref == 'refs/heads/main'  # Deploy only from main branch
 
     strategy:
       matrix:
@@ -79,7 +94,6 @@ jobs:
         with:
           python-version: '3.13'
 
-      # ✅ Check if AWS CLI is installed and update it instead of reinstalling
       - name: Check AWS CLI version
         run: aws --version || echo "AWS CLI not found"