name: Multi-Cloud Deployment

on:
  workflow_dispatch:
    inputs:
      environment:
        description: 'Environment name to deploy'
        required: true
        type: choice
        options:
          - all
          - admin-azure-westus
          - workload-azure-eastus
          - workload-aws-usw2
          - workload-gcp-ew1
          - workload-hci-dc1
      strategy:
        description: 'Deployment strategy'
        required: false
        default: 'blue-green'
        type: choice
        options:
          - blue-green
          - canary
          - rolling
      dry_run:
        description: 'Dry run (plan only)'
        required: false
        default: false
        type: boolean

env:
  TF_VERSION: "1.6.0"
  AZURE_SUBSCRIPTION_ID: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
  AZURE_TENANT_ID: ${{ secrets.AZURE_TENANT_ID }}
  AWS_ACCOUNT_ID: ${{ secrets.AWS_ACCOUNT_ID }}
  GCP_PROJECT_ID: ${{ secrets.GCP_PROJECT_ID }}

jobs:
  load-environments:
    runs-on: ubuntu-latest
    outputs:
      environments: ${{ steps.parse.outputs.environments }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      
      - name: Parse environments.yaml
        id: parse
        run: |
          python3 << 'EOF'
          import yaml
          import json
          
          with open('config/environments.yaml', 'r') as f:
              config = yaml.safe_load(f)
          
          environments = config.get('environments', [])
          enabled = [e['name'] for e in environments if e.get('enabled', False)]
          
          print(f"environments={json.dumps(enabled)}")
          EOF
        id: parse

  terraform-plan:
    needs: load-environments
    runs-on: ubuntu-latest
    strategy:
      matrix:
        environment: ${{ fromJson(needs.load-environments.outputs.environments) }}
    if: |
      github.event.inputs.environment == 'all' || 
      github.event.inputs.environment == matrix.environment
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      
      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v3
        with:
          terraform_version: ${{ env.TF_VERSION }}
      
      - name: Terraform Init
        working-directory: terraform/multi-cloud
        run: terraform init
      
      - name: Terraform Plan
        working-directory: terraform/multi-cloud
        env:
          TF_VAR_environment: ${{ matrix.environment }}
        run: |
          terraform plan \
            -var="environment=${{ matrix.environment }}" \
            -out=tfplan-${{ matrix.environment }}.tfplan
      
      - name: Upload Plan
        uses: actions/upload-artifact@v4
        with:
          name: tfplan-${{ matrix.environment }}
          path: terraform/multi-cloud/tfplan-${{ matrix.environment }}.tfplan

  terraform-apply:
    needs: [load-environments, terraform-plan]
    runs-on: ubuntu-latest
    if: github.event.inputs.dry_run == false
    strategy:
      matrix:
        environment: ${{ fromJson(needs.load-environments.outputs.environments) }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      
      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v3
        with:
          terraform_version: ${{ env.TF_VERSION }}
      
      - name: Download Plan
        uses: actions/download-artifact@v4
        with:
          name: tfplan-${{ matrix.environment }}
          path: terraform/multi-cloud
      
      - name: Terraform Apply
        working-directory: terraform/multi-cloud
        env:
          TF_VAR_environment: ${{ matrix.environment }}
          AZURE_CLIENT_ID: ${{ secrets.AZURE_CLIENT_ID }}
          AZURE_CLIENT_SECRET: ${{ secrets.AZURE_CLIENT_SECRET }}
          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          GOOGLE_APPLICATION_CREDENTIALS: ${{ secrets.GCP_SA_KEY }}
        run: |
          terraform apply -auto-approve tfplan-${{ matrix.environment }}.tfplan

  deploy-applications:
    needs: [load-environments, terraform-apply]
    runs-on: ubuntu-latest
    if: github.event.inputs.dry_run == false
    strategy:
      matrix:
        environment: ${{ fromJson(needs.load-environments.outputs.environments) }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      
      - name: Setup Helm
        uses: azure/setup-helm@v3
        with:
          version: '3.13.0'
      
      - name: Deploy Besu Network
        run: |
          # Get kubeconfig for environment
          # Deploy Helm charts
          helm upgrade --install besu-network ./helm/besu-network \
            --namespace besu-network \
            --create-namespace \
            --set environment=${{ matrix.environment }}
      
      - name: Verify Deployment
        run: |
          # Check pod status
          kubectl get pods -n besu-network
          kubectl wait --for=condition=ready pod -l app=besu-validator -n besu-network --timeout=300s

  notify:
    needs: [terraform-apply, deploy-applications]
    runs-on: ubuntu-latest
    if: always()
    steps:
      - name: Notify Deployment Status
        run: |
          echo "Deployment completed"
          # Add notification logic (Slack, Teams, etc.)