feat: add validation for mainnet deployment environment in workflow

Author: gfournierPro

.github/workflows/sharing-smart-contract-deploy.yml

@@ -25,7 +25,29 @@ on:
 
 
 jobs:
+ 
+ # Validate deployment network and environment.
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      # On Github, the environment `mainnets` is restricted to
+      # the main branch. Here we check that it's only used with
+      # mainnet networks.
+      - name: Validate mainnet deployment
+        run: |
+          if [[ "${{ inputs.environment }}" == "mainnets" && "${{ inputs.network }}" != "bellecour" ]]; then
+              echo "::error::mainnets environment can only be used with mainnet networks."
+              exit 1
+          fi
+          echo "Deploying to network '${{ inputs.network }}' with environment '${{ inputs.environment }}'."
+  
+  # Deploy and verify contract.
   build-and-test:
+    needs: validate
     uses: ./.github/workflows/sharing-smart-contracts-ci.yml
     with:
       node-version: 20