name: Build and deploy containers
# Pushes to main will build containers with staging env's and push them as staging images, whereas release goes to production.
on:
  release:
    types: [published]
  push:
    branches:
      - main
env:
  BACKEND_IMAGE_NAME: ${{ github.event_name == 'release' && 'nowdb-backend' || 'nowdb-backend-staging' }}
  FRONTEND_IMAGE_NAME: ${{ github.event_name == 'release' && 'nowdb-frontend' || 'nowdb-frontend-staging' }}
  BACKEND_URL: ${{ github.event_name == 'release' && secrets.BACKEND_URL_PROD || secrets.BACKEND_URL_STAGING }}
  RUNNING_ENV: ${{ github.event_name == 'release' && 'prod' || 'staging' }}
  ENABLE_WRITE: ${{ github.event_name == 'release' && 'false' || 'true' }}
  # Backend env's are defined inside the cluster, whereas frontend's have to be defined at build stage, that's why they're here

jobs:
  push_backend:
    if: ${{ github.event_name == 'release' || (github.event_name == 'push' && !contains(github.event.head_commit.message, '#no-deploy')) }}
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
    steps:
      - uses: actions/checkout@v5

      - name: Build image
        run: docker build . --file backend/Dockerfile --tag $BACKEND_IMAGE_NAME --label "runnumber=${GITHUB_RUN_ID}" --target node-run

      - name: Log in to registry
        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
        #
      - name: Push image
        run: |
          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$BACKEND_IMAGE_NAME

          # This changes all uppercase characters to lowercase.
          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')

          # This strips the git ref prefix from the version.
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')

          # This strips the "v" prefix from the tag name.
          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')

          VERSION=latest
          echo IMAGE_ID=$IMAGE_ID
          echo VERSION=$VERSION
          docker tag $BACKEND_IMAGE_NAME $IMAGE_ID:$VERSION
          docker push $IMAGE_ID:$VERSION
  push_frontend:
    if: ${{ github.event_name == 'release' || (github.event_name == 'push' && !contains(github.event.head_commit.message, '#no-deploy')) }}
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
    steps:
      - uses: actions/checkout@v5

      - name: Build image
        run: docker build frontend --tag $FRONTEND_IMAGE_NAME --label "runnumber=${GITHUB_RUN_ID}" --build-arg BACKEND_URL=${BACKEND_URL} --build-arg RUNNING_ENV=${RUNNING_ENV} --build-arg ENABLE_WRITE=${ENABLE_WRITE} --build-arg GEONAMES_USERNAME=${{ secrets.GEONAMES_USERNAME }} --target serve

      - name: Log in to registry
        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
        #
      - name: Push image
        run: |
          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$FRONTEND_IMAGE_NAME

          # This changes all uppercase characters to lowercase.
          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
          # This strips the git ref prefix from the version.
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
          # This strips the "v" prefix from the tag name.
          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
          # This uses the Docker `latest` tag convention.
          VERSION=latest
          echo IMAGE_ID=$IMAGE_ID
          echo VERSION=$VERSION
          docker tag $FRONTEND_IMAGE_NAME $IMAGE_ID:$VERSION
          docker push $IMAGE_ID:$VERSION
  # delete_old_prod:
  #   runs-on: ubuntu-latest
  #   if: ${{ github.event_name == 'release' }}
  #   steps:
  #     - uses: actions/delete-package-versions@v5
  #       with:
  #         package-name: 'nowdb-frontend'
  #         min-versions-to-keep: 5
  #         package-type: 'container'
  #     - uses: actions/delete-package-versions@v5
  #       with:
  #         package-name: 'nowdb-backend'
  #         min-versions-to-keep: 5
  #         package-type: 'container'
  delete_old_staging:
    runs-on: ubuntu-latest
    if: ${{ github.event_name == 'push' }}
    permissions:
      packages: write
      contents: read
    steps:
      - uses: actions/github-script@v8
        env:
          PACKAGE_NAME: nowdb-frontend-staging
          MIN_VERSIONS_TO_KEEP: '3'
        with:
          script: |
            const packageName = process.env.PACKAGE_NAME;
            const minVersionsToKeep = Number(process.env.MIN_VERSIONS_TO_KEEP ?? '0');
            const owner = context.repo.owner;

            const listVersions = async () => {
              try {
                return await github.paginate(
                  github.rest.packages.getAllPackageVersionsForPackageOwnedByOrg,
                  {
                    package_type: 'container',
                    package_name: packageName,
                    org: owner,
                    per_page: 100,
                  },
                );
              } catch (error) {
                if (error.status !== 404) {
                  throw error;
                }

                return github.paginate(
                  github.rest.packages.getAllPackageVersionsForPackageOwnedByUser,
                  {
                    package_type: 'container',
                    package_name: packageName,
                    username: owner,
                    per_page: 100,
                  },
                );
              }
            };

            const deleteVersion = async (packageVersionId) => {
              try {
                await github.rest.packages.deletePackageVersionForOrg({
                  package_type: 'container',
                  package_name: packageName,
                  org: owner,
                  package_version_id: packageVersionId,
                });
              } catch (error) {
                if (error.status !== 404) {
                  throw error;
                }

                await github.rest.packages.deletePackageVersionForUser({
                  package_type: 'container',
                  package_name: packageName,
                  username: owner,
                  package_version_id: packageVersionId,
                });
              }
            };

            const versions = await listVersions();

            const versionsToDelete = versions
              .slice()
              .sort((a, b) => new Date(b.created_at) - new Date(a.created_at))
              .slice(minVersionsToKeep);

            core.info(`Found ${versions.length} versions for ${packageName}. Deleting ${versionsToDelete.length}.`);

            for (const version of versionsToDelete) {
              await deleteVersion(version.id);
              core.info(`Deleted ${packageName} version ${version.id}.`);
            }
      - uses: actions/github-script@v8
        env:
          PACKAGE_NAME: nowdb-backend-staging
          MIN_VERSIONS_TO_KEEP: '3'
        with:
          script: |
            const packageName = process.env.PACKAGE_NAME;
            const minVersionsToKeep = Number(process.env.MIN_VERSIONS_TO_KEEP ?? '0');
            const owner = context.repo.owner;

            const listVersions = async () => {
              try {
                return await github.paginate(
                  github.rest.packages.getAllPackageVersionsForPackageOwnedByOrg,
                  {
                    package_type: 'container',
                    package_name: packageName,
                    org: owner,
                    per_page: 100,
                  },
                );
              } catch (error) {
                if (error.status !== 404) {
                  throw error;
                }

                return github.paginate(
                  github.rest.packages.getAllPackageVersionsForPackageOwnedByUser,
                  {
                    package_type: 'container',
                    package_name: packageName,
                    username: owner,
                    per_page: 100,
                  },
                );
              }
            };

            const deleteVersion = async (packageVersionId) => {
              try {
                await github.rest.packages.deletePackageVersionForOrg({
                  package_type: 'container',
                  package_name: packageName,
                  org: owner,
                  package_version_id: packageVersionId,
                });
              } catch (error) {
                if (error.status !== 404) {
                  throw error;
                }

                await github.rest.packages.deletePackageVersionForUser({
                  package_type: 'container',
                  package_name: packageName,
                  username: owner,
                  package_version_id: packageVersionId,
                });
              }
            };

            const versions = await listVersions();

            const versionsToDelete = versions
              .slice()
              .sort((a, b) => new Date(b.created_at) - new Date(a.created_at))
              .slice(minVersionsToKeep);

            core.info(`Found ${versions.length} versions for ${packageName}. Deleting ${versionsToDelete.length}.`);

            for (const version of versionsToDelete) {
              await deleteVersion(version.id);
              core.info(`Deleted ${packageName} version ${version.id}.`);
            }