# =============================================================================
# GitHub Actions — Full DevSecOps Pipeline
# =============================================================================
# Stages: SAST → Build → Scan → Test → Sign → Deploy
# =============================================================================

name: DevSecOps Pipeline

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

env:
  REGISTRY: ecr.aws/devsecops
  IMAGE_NAME: ${{ github.repository }}

permissions:
  id-token: write
  contents: read
  security-events: write

jobs:
  # =========================================================================
  # Stage 1: SAST + Secret Scanning
  # =========================================================================
  sast:
    name: SAST & Secret Scan
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Semgrep SAST
        uses: semgrep/semgrep-action@v1
        with:
          config: >-
            p/security-audit
            p/secrets
            p/owasp-top-ten
          publishToken: ${{ secrets.SEMGREP_TOKEN }}

      - name: Trivy Secret Scan
        uses: aquasecurity/trivy-action@master
        with:
          scan-type: fs
          scanners: secret
          exit-code: 1
          severity: CRITICAL,HIGH

      - name: Checkov IaC Scan
        uses: bridgecrewio/checkov-action@master
        with:
          directory: terraform/
          framework: terraform
          output_format: sarif
          output_file: checkov.sarif
          soft_fail: false

      - name: Upload SARIF
        uses: github/codeql-action/upload-sarif@v3
        if: always()
        with:
          sarif_file: .

  # =========================================================================
  # Stage 2: Build
  # =========================================================================
  build:
    name: Build & Push
    needs: sast
    runs-on: ubuntu-latest
    outputs:
      image_tag: ${{ steps.meta.outputs.tags }}
      image_digest: ${{ steps.build.outputs.digest }}
    steps:
      - uses: actions/checkout@v4

      - name: Configure AWS Credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          role-to-assume: ${{ secrets.AWS_ROLE_ARN }}
          role-session-name: github-actions
          aws-region: us-east-1

      - name: Login to ECR
        uses: aws-actions/amazon-ecr-login@v2

      - name: Docker Meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=sha,prefix=
            type=ref,event=branch
            type=semver,pattern={{version}}

      - name: Build
        id: build
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          build-args: |
            BUILD_DATE=${{ github.event.head_commit.timestamp }}

  # =========================================================================
  # Stage 3: Container Security Scan
  # =========================================================================
  scan:
    name: Container Security Scan
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Trivy Vulnerability Scan
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: ${{ needs.build.outputs.image_tag }}
          format: sarif
          output: trivy.sarif
          exit-code: 1
          severity: CRITICAL,HIGH
          ignore-unfixed: true

      - name: Generate SBOM
        uses: anchore/sbom-action@v0
        with:
          image: ${{ needs.build.outputs.image_tag }}
          format: spdx-json
          output-file: sbom.spdx.json

      - name: Upload SBOM
        uses: actions/upload-artifact@v4
        with:
          name: sbom
          path: sbom.spdx.json

  # =========================================================================
  # Stage 4: Integration Tests + DAST
  # =========================================================================
  test:
    name: Integration Test & DAST
    needs: build
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Run Integration Tests
        run: |
          docker compose -f docker-compose.test.yml up --abort-on-container-exit

      - name: OWASP ZAP Full Scan
        uses: zaproxy/action-full-scan@v0.10.0
        with:
          target: https://staging.platform.internal
          rules_file_name: zap-rules.tsv
          cmd_options: '-a -j'
          fail_action: true

  # =========================================================================
  # Stage 5: Sign & Attest
  # =========================================================================
  sign:
    name: Sign & Attest
    needs: [build, scan]
    runs-on: ubuntu-latest
    steps:
      - name: Cosign Install
        uses: sigstore/cosign-installer@v3

      - name: Sign Image
        run: |
          cosign sign --yes ${{ needs.build.outputs.image_tag }}@${{ needs.build.outputs.image_digest }}

      - name: Attest SBOM
        run: |
          cosign attest --yes \
            --predicate sbom.spdx.json \
            --type spdxjson \
            ${{ needs.build.outputs.image_tag }}@${{ needs.build.outputs.image_digest }}

  # =========================================================================
  # Stage 6: Deploy (ArgoCD Sync)
  # =========================================================================
  deploy-staging:
    name: Deploy → Staging
    needs: [sign, test]
    runs-on: ubuntu-latest
    environment: staging
    steps:
      - name: Update Kustomize Image Tag
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          cd k8s/workloads/${{ matrix.workload }}
          kustomize edit set image ${{ env.IMAGE_NAME }}=${{ needs.build.outputs.image_tag }}
          git commit -am "chore: update image tag for staging"
          git push

      - name: ArgoCD Sync
        run: |
          argocd app sync staging-app --grpc-web

  deploy-prod:
    name: Deploy → Production
    needs: deploy-staging
    runs-on: ubuntu-latest
    environment: production
    steps:
      - name: ArgoCD Sync
        run: |
          argocd app sync prod-app --grpc-web

      - name: Smoke Test
        run: |
          curl -sf https://platform.internal/healthz || exit 1