name: CI/CD Pipeline with Secure Ephemeral PiP

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

env:
  REGISTRY: ${{ secrets.REGISTRY_HOST }}
  APP_NAME: ${{ secrets.APP_NAME }}
  IMAGE_TAG: ${{ github.sha }}
  RUN_ID: ${{ github.run_id }}

jobs:
  test-backend:
    runs-on: [self-hosted, ci]
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup ephemeral PiP container
        run: |
          chmod +x ./secure_pip_setup.sh
          ./secure_pip_setup.sh

      - name: Wait for PiP readiness
        run: |
          chmod +x ./pip_ready.sh
          ./pip_ready.sh

      - name: Setup SSH with pinned known_hosts
        run: |
          mkdir -p ~/.ssh
          chmod 700 ~/.ssh
          echo "${{ secrets.SSH_PRIVATE_KEY }}" > ~/.ssh/id_ed25519
          chmod 600 ~/.ssh/id_ed25519
          echo "${{ secrets.SSH_KNOWN_HOSTS }}" > ~/.ssh/known_hosts
          chmod 644 ~/.ssh/known_hosts
          git config --global core.sshCommand "ssh -o StrictHostKeyChecking=yes -o UserKnownHostsFile=$HOME/.ssh/known_hosts"

      - name: Create integration test network
        run: |
          podman exec ci-pip-$RUN_ID podman network create integ-$RUN_ID

      - name: Start PostgreSQL on internal network
        run: |
          podman exec ci-pip-$RUN_ID podman run -d \
            --name test-postgres \
            --network integ-$RUN_ID \
            -e POSTGRES_PASSWORD=testpassword \
            -e POSTGRES_USER=testuser \
            -e POSTGRES_DB=testdb \
            postgres:15-alpine@sha256:def456abc1237890def456abc1237890def456abc1237890def456abc1237890

      - name: Wait for PostgreSQL to be ready
        run: |
          podman exec ci-pip-$RUN_ID sh -lc \
            'timeout 60 sh -c "until podman exec test-postgres pg_isready -h test-postgres -p 5432 -U testuser; do sleep 1; done"'

      - name: Run backend unit tests
        run: |
          podman exec -e WORKSPACE="${GITHUB_WORKSPACE}" ci-pip-$RUN_ID sh -lc \
            'podman run --rm \
            -v "$WORKSPACE":/workspace \
            -w /workspace \
            rust@sha256:1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef \
            sh -c "cargo test --lib -- --test-threads=1"'

      - name: Run backend integration tests
        run: |
          podman exec -e WORKSPACE="${GITHUB_WORKSPACE}" ci-pip-$RUN_ID sh -lc \
            'podman run --rm \
            -v "$WORKSPACE":/workspace \
            -w /workspace \
            -e DATABASE_URL=postgres://testuser:testpassword@test-postgres:5432/testdb \
            rust@sha256:1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef \
            sh -c "cargo test --test '*' -- --test-threads=1"'

      - name: Cleanup test resources
        if: always()
        run: |
          podman exec ci-pip-$RUN_ID podman stop test-postgres 2>/dev/null || true
          podman exec ci-pip-$RUN_ID podman rm test-postgres 2>/dev/null || true
          podman exec ci-pip-$RUN_ID podman network rm integ-$RUN_ID 2>/dev/null || true

      - name: Per-job cleanup (host socket)
        if: always()
        run: |
          SOCKET_DIR="${XDG_RUNTIME_DIR:-/run/user/$(id -u)}/podman-host-${RUN_ID}"
          pgrep -u "$(id -u)" -fa 'podman system service' | grep -F "unix://${SOCKET_DIR}/podman.sock" | awk '{print $1}' | xargs -r kill || true
          rm -rf "${SOCKET_DIR}" 2>/dev/null || true

  test-frontend:
    runs-on: [self-hosted, ci]
    needs: test-backend
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup ephemeral PiP container
        run: |
          chmod +x ./secure_pip_setup.sh
          ./secure_pip_setup.sh

      - name: Wait for PiP readiness
        run: |
          chmod +x ./pip_ready.sh
          ./pip_ready.sh

      - name: Run frontend tests in PiP
        run: |
          podman exec -e WORKSPACE="${GITHUB_WORKSPACE}" ci-pip-$RUN_ID sh -lc \
            'podman run --rm \
            -v "$WORKSPACE":/workspace \
            -w /workspace \
            node:20@sha256:7890abcdef1234567890abcdef1234567890abcdef1234567890abcdef123456 \
            sh -c "npm ci && npm run test"'

      - name: Per-job cleanup (host socket)
        if: always()
        run: |
          SOCKET_DIR="${XDG_RUNTIME_DIR:-/run/user/$(id -u)}/podman-host-${RUN_ID}"
          pgrep -u "$(id -u)" -fa 'podman system service' | grep -F "unix://${SOCKET_DIR}/podman.sock" | awk '{print $1}' | xargs -r kill || true
          rm -rf "${SOCKET_DIR}" 2>/dev/null || true

  build-backend:
    runs-on: [self-hosted, ci]
    needs: test-frontend
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup ephemeral PiP container
        run: |
          chmod +x ./secure_pip_setup.sh
          ./secure_pip_setup.sh

      - name: Wait for PiP readiness
        run: |
          chmod +x ./pip_ready.sh
          ./pip_ready.sh

      - name: Login to Forgejo Container Registry securely
        run: |
          echo "${{ secrets.REGISTRY_TOKEN }}" | podman exec -i ci-pip-$RUN_ID podman login ${{ secrets.REGISTRY_HOST }} \
            -u ${{ secrets.REGISTRY_USERNAME }} \
            --password-stdin

      - name: Build backend image
        run: |
          podman exec -e REGISTRY="$REGISTRY" -e APP_NAME="$APP_NAME" -e IMAGE_TAG="$IMAGE_TAG" \
            ci-pip-$RUN_ID sh -lc 'cd /workspace/backend && podman build -t "$REGISTRY/$APP_NAME/backend:$IMAGE_TAG" .'

      - name: Push backend image
        run: |
          podman exec -e REGISTRY="$REGISTRY" -e APP_NAME="$APP_NAME" -e IMAGE_TAG="$IMAGE_TAG" \
            ci-pip-$RUN_ID sh -lc 'podman push "$REGISTRY/$APP_NAME/backend:$IMAGE_TAG"'

      - name: Per-job cleanup (host socket)
        if: always()
        run: |
          SOCKET_DIR="${XDG_RUNTIME_DIR:-/run/user/$(id -u)}/podman-host-${RUN_ID}"
          pgrep -u "$(id -u)" -fa 'podman system service' | grep -F "unix://${SOCKET_DIR}/podman.sock" | awk '{print $1}' | xargs -r kill || true
          rm -rf "${SOCKET_DIR}" 2>/dev/null || true

  build-frontend:
    runs-on: [self-hosted, ci]
    needs: test-frontend
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup ephemeral PiP container
        run: |
          chmod +x ./secure_pip_setup.sh
          ./secure_pip_setup.sh

      - name: Wait for PiP readiness
        run: |
          chmod +x ./pip_ready.sh
          ./pip_ready.sh

      - name: Login to Forgejo Container Registry securely
        run: |
          echo "${{ secrets.REGISTRY_TOKEN }}" | podman exec -i ci-pip-$RUN_ID podman login ${{ secrets.REGISTRY_HOST }} \
            -u ${{ secrets.REGISTRY_USERNAME }} \
            --password-stdin

      - name: Build frontend image
        run: |
          podman exec -e REGISTRY="$REGISTRY" -e APP_NAME="$APP_NAME" -e IMAGE_TAG="$IMAGE_TAG" \
            ci-pip-$RUN_ID sh -lc 'cd /workspace/frontend && podman build -t "$REGISTRY/$APP_NAME/frontend:$IMAGE_TAG" .'

      - name: Push frontend image
        run: |
          podman exec -e REGISTRY="$REGISTRY" -e APP_NAME="$APP_NAME" -e IMAGE_TAG="$IMAGE_TAG" \
            ci-pip-$RUN_ID sh -lc 'podman push "$REGISTRY/$APP_NAME/frontend:$IMAGE_TAG"'

      - name: Per-job cleanup (host socket)
        if: always()
        run: |
          SOCKET_DIR="${XDG_RUNTIME_DIR:-/run/user/$(id -u)}/podman-host-${RUN_ID}"
          pgrep -u "$(id -u)" -fa 'podman system service' | grep -F "unix://${SOCKET_DIR}/podman.sock" | awk '{print $1}' | xargs -r kill || true
          rm -rf "${SOCKET_DIR}" 2>/dev/null || true

  cleanup:
    runs-on: [self-hosted, ci]
    needs: [build-backend, build-frontend]
    if: always()
    steps:
      - name: Cleanup PiP container and per-run socket
        run: |
          podman rm -f ci-pip-$RUN_ID 2>/dev/null || true
          SOCKET_DIR="${XDG_RUNTIME_DIR:-/run/user/$(id -u)}/podman-host-${RUN_ID}"
          if pgrep -u "$(id -u)" -fa 'podman system service' | grep -F "unix://${SOCKET_DIR}/podman.sock" >/dev/null; then
            pgrep -u "$(id -u)" -fa 'podman system service' | grep -F "unix://${SOCKET_DIR}/podman.sock" | awk '{print $1}' | xargs -r kill || true
          fi
          rm -rf "${SOCKET_DIR}" 2>/dev/null || true