# =============================================================================
# Gitea Actions Workflow - PostgreSQL Container Factory
# =============================================================================
#
# Build de imagem PostgreSQL customizada em formato eStargz.
# Push para Gitea Container Registry com lazy pulling habilitado.
#
# Requisitos:
#   - Gitea Actions Runner com Docker (aula-10)
#   - Secret REGISTRY_TOKEN configurado no repo
#
# Uso:
#   1. Criar org 'factory' no Gitea
#   2. Criar repositório 'postgresql' na org
#   3. Copiar Dockerfile, postgresql.conf e este ci.yml para .gitea/workflows/
#   4. Push para main - pipeline roda automaticamente
#
# =============================================================================

name: Build PostgreSQL

on:
  push:
    branches: [main]
    tags: ['*']

env:
  REGISTRY: gitea.kube.quest
  IMAGE_NAME: factory/postgresql
  POSTGRES_VERSION: "17"

jobs:
  # ===========================================================================
  # BUILD - Construir imagem em formato eStargz
  # ===========================================================================
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Gitea Registry
        run: |
          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login ${{ env.REGISTRY }} \
            -u ${{ gitea.actor }} --password-stdin

      - name: Build eStargz image
        run: |
          SHORT_SHA=$(echo "${{ github.sha }}" | cut -c1-8)
          echo "Building ${{ env.IMAGE_NAME }}:${{ env.POSTGRES_VERSION }}-${SHORT_SHA} with eStargz compression"
          docker buildx build \
            --output type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.POSTGRES_VERSION }}-${SHORT_SHA},push=true,compression=estargz,force-compression=true,oci-mediatypes=true \
            --label "org.opencontainers.image.revision=${{ github.sha }}" \
            --label "org.opencontainers.image.created=$(date -u +%Y-%m-%dT%H:%M:%SZ)" \
            --build-arg POSTGRES_VERSION=${{ env.POSTGRES_VERSION }} \
            .

  # ===========================================================================
  # TEST - Testar imagem construída
  # ===========================================================================
  test:
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Login to Gitea Registry
        run: |
          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login ${{ env.REGISTRY }} \
            -u ${{ gitea.actor }} --password-stdin

      - name: Test PostgreSQL image
        run: |
          SHORT_SHA=$(echo "${{ github.sha }}" | cut -c1-8)
          echo "Testing PostgreSQL image..."

          docker run -d --name pg-test \
            -e POSTGRES_PASSWORD=testpassword \
            -e POSTGRES_DB=testdb \
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.POSTGRES_VERSION }}-${SHORT_SHA}

          # Aguardar inicialização (30s max)
          for i in $(seq 1 30); do
            if docker exec pg-test pg_isready -U postgres -d testdb 2>/dev/null; then
              echo "PostgreSQL ready!"
              break
            fi
            echo "Waiting for PostgreSQL... ($i/30)"
            sleep 1
          done

          # Verificar healthcheck
          docker exec pg-test pg_isready -U postgres -d testdb

          # Testar conexão e queries básicas
          docker exec pg-test psql -U postgres -d testdb -c "SELECT version();"
          docker exec pg-test psql -U postgres -d testdb -c "SHOW shared_buffers;"
          docker exec pg-test psql -U postgres -d testdb -c "SHOW max_connections;"

          # Testar criação de tabela
          docker exec pg-test psql -U postgres -d testdb -c "CREATE TABLE test (id serial PRIMARY KEY, name text);"
          docker exec pg-test psql -U postgres -d testdb -c "INSERT INTO test (name) VALUES ('test');"
          docker exec pg-test psql -U postgres -d testdb -c "SELECT * FROM test;"
          docker exec pg-test psql -U postgres -d testdb -c "DROP TABLE test;"

          # Cleanup
          docker stop pg-test && docker rm pg-test
          echo "All tests passed!"

  # ===========================================================================
  # PUSH - Tag como versão e latest
  # ===========================================================================
  push:
    runs-on: ubuntu-latest
    needs: test
    if: github.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Gitea Registry
        run: |
          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login ${{ env.REGISTRY }} \
            -u ${{ gitea.actor }} --password-stdin

      - name: Push version and latest tags (eStargz)
        run: |
          echo "Tagging and pushing final images..."

          # Tag como versão (17)
          docker buildx build \
            --output type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.POSTGRES_VERSION }},push=true,compression=estargz,force-compression=true,oci-mediatypes=true \
            --label "org.opencontainers.image.revision=${{ github.sha }}" \
            --label "org.opencontainers.image.created=$(date -u +%Y-%m-%dT%H:%M:%SZ)" \
            .

          # Tag como latest
          docker buildx build \
            --output type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest,push=true,compression=estargz,force-compression=true,oci-mediatypes=true \
            --label "org.opencontainers.image.revision=${{ github.sha }}" \
            --label "org.opencontainers.image.created=$(date -u +%Y-%m-%dT%H:%M:%SZ)" \
            .

      - name: Push GZIP version (for benchmark)
        run: |
          docker buildx build \
            --output type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.POSTGRES_VERSION }}-gzip,push=true,compression=gzip,oci-mediatypes=true \
            --label "org.opencontainers.image.revision=${{ github.sha }}" \
            --label "org.opencontainers.image.created=$(date -u +%Y-%m-%dT%H:%M:%SZ)" \
            .

          echo "Images pushed:"
          echo "  - ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.POSTGRES_VERSION }} (eStargz)"
          echo "  - ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.POSTGRES_VERSION }}-gzip (GZIP)"
          echo "  - ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest (eStargz)"