name: Terraform Apply

on:
  push:
    branches:
      - master

concurrency:
  group: terraform-global
  cancel-in-progress: false

jobs:
  terraform:
    name: "Terraform Apply"
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: https://gitea.com/actions/checkout@v4

      - name: Create secrets.tfvars
        working-directory: terraform
        run: |
          cat > secrets.auto.tfvars << EOF
          pm_api_token_secret = "${{ secrets.PM_API_TOKEN_SECRET }}"
          SSH_KEY_PUBLIC      = "$(printf '%s' "${{ secrets.SSH_KEY_PUBLIC }}" | tr -d '\r\n')"
          EOF
          cat > backend.hcl << EOF
          bucket                      = "${{ secrets.B2_TF_BUCKET }}"
          key                         = "terraform.tfstate"
          region                      = "us-east-005"
          endpoints = {
            s3 = "${{ secrets.B2_TF_ENDPOINT }}"
          }
          access_key                  = "$(printf '%s' "${{ secrets.B2_KEY_ID }}" | tr -d '\r\n')"
          secret_key                  = "$(printf '%s' "${{ secrets.B2_APPLICATION_KEY }}" | tr -d '\r\n')"
          skip_credentials_validation = true
          skip_metadata_api_check     = true
          skip_region_validation      = true
          skip_requesting_account_id  = true
          use_path_style              = true
          EOF

      - name: Set up Terraform
        uses: hashicorp/setup-terraform@v2
        with:
          terraform_version: 1.6.6
          terraform_wrapper: false

      - name: Terraform Init
        working-directory: terraform
        run: terraform init -reconfigure -backend-config=backend.hcl

      - name: Terraform Plan
        working-directory: terraform
        run: terraform plan -out=tfplan

      - name: Block accidental destroy
        env:
          ALLOW_TF_DESTROY: ${{ secrets.ALLOW_TF_DESTROY }}
        working-directory: terraform
        run: |
          terraform show -json -no-color tfplan > tfplan.json
          DESTROY_COUNT=$(python3 -c 'import json; raw=open("tfplan.json","rb").read().decode("utf-8","ignore"); start=raw.find("{"); data=json.JSONDecoder().raw_decode(raw[start:])[0]; print(sum(1 for rc in data.get("resource_changes", []) if "delete" in rc.get("change", {}).get("actions", [])))')
          echo "Planned deletes: $DESTROY_COUNT"
          if [ "$DESTROY_COUNT" -gt 0 ] && [ "${ALLOW_TF_DESTROY}" != "true" ]; then
            echo "Destroy actions detected. Set ALLOW_TF_DESTROY=true to allow."
            exit 1
          fi

      - name: Terraform Apply
        working-directory: terraform
        run: terraform apply -auto-approve tfplan