# SPDX-FileCopyrightText: © Vegard IT GmbH (https://vegardit.com)
# SPDX-FileContributor: Sebastian Thomschke
# SPDX-License-Identifier: Apache-2.0
# SPDX-ArtifactOfProjectHomePage: https://github.com/vegardit/docker-gitea-act-runner
#
# https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions
name: Build

on:
  push:
    branches:    # build all branches
    - '**'
    tags-ignore: # but don't build tags
    - '**'
    paths-ignore:
    - '**/*.md'
    - '.github/*.yml'
  schedule:
    # https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
    - cron: '0 17 * * 3'
  pull_request:
  workflow_dispatch:
    # https://github.blog/changelog/2020-07-06-github-actions-manual-triggers-with-workflow_dispatch/

defaults:
  run:
    shell: bash

env:
  DOCKER_IMAGE_REPO: vegardit/gitea-act-runner
  TRIVY_CACHE_DIR: ~/.trivy/cache

jobs:
  build:
    runs-on: ubuntu-latest

    strategy:
      matrix:
        include:
          - DOCKER_FILE: Dockerfile
            DOCKER_IMAGE_TAG: latest
          - DOCKER_FILE: DinD.Dockerfile
            DOCKER_IMAGE_TAG: dind-latest
      fail-fast: true
    steps:
    - name: Show environment variables
      run: env | sort

    - name: Git Checkout
      uses: actions/checkout@v3 #https://github.com/actions/checkout

    - name: Check Dockerfile
      uses: hadolint/hadolint-action@v3.1.0
      with:
        dockerfile: image/${{ matrix.DOCKER_FILE }}
        ignore: DL3008,SC1091 # https://github.com/hadolint/hadolint/wiki/DL3008

    - name: Cache trivy cache
      uses: actions/cache@v3
      with:
        path: ${{ env.TRIVY_CACHE_DIR }}
        # https://github.com/actions/cache/issues/342#issuecomment-673371329
        key: ${{ runner.os }}-trivy-${{ github.run_id }}
        restore-keys: |
          ${{ runner.os }}-trivy-

    - name: Configure fast APT repository mirror
      uses: vegardit/fast-apt-mirror.sh@v1

    - name: Install dos2unix
      run: sudo apt-get install --no-install-recommends -y dos2unix

    - name: Build ${{ env.DOCKER_IMAGE_REPO }}:${{ env.DOCKER_IMAGE_TAG }}
      env:
        DOCKER_REGISTRY: docker.io
        DOCKER_REGISTRY_USERNAME: ${{ secrets.DOCKER_HUB_USERNAME }}
        DOCKER_REGISTRY_TOKEN: ${{ secrets.DOCKER_HUB_TOKEN }}
        DOCKER_IMAGE_TAG: ${{ matrix.DOCKER_IMAGE_TAG }}
        DOCKER_FILE: ${{ matrix.DOCKER_FILE }}
        TRIVY_GITHUB_TOKEN: ${{ github.token }}
      run: |
        set -eu
        if [[ $GITHUB_REF_NAME == "main" && $GITHUB_EVENT_NAME != "pull_request" && ${ACT:-} != "true" ]]; then
          export DOCKER_PUSH=1
          echo "$DOCKER_REGISTRY_TOKEN" | docker login -u="$DOCKER_REGISTRY_USERNAME" "$DOCKER_REGISTRY" --password-stdin
        fi
        bash build-image.sh

    - name: Publish Docker image to GH registry
      if: ${{ github.ref_name == 'main' && github.event_name != 'pull_request' && !env.ACT }} # https://github.com/nektos/act#skipping-steps
      env:
        DOCKER_IMAGE_TAG: ${{ matrix.DOCKER_IMAGE_TAG }}
      run: |
        set -eux

        echo "${{ github.token }}" | docker login https://ghcr.io -u ${{ github.actor }} --password-stdin

        docker image tag $DOCKER_IMAGE_REPO:$DOCKER_IMAGE_TAG ghcr.io/$DOCKER_IMAGE_REPO:$DOCKER_IMAGE_TAG
        docker push ghcr.io/$DOCKER_IMAGE_REPO:$DOCKER_IMAGE_TAG

    - name: Delete untagged images
      uses: actions/github-script@v6
      if: ${{ github.ref_name == 'main' && github.event_name != 'pull_request' && !env.ACT }} # https://github.com/nektos/act#skipping-steps
      with:
        github-token: ${{ secrets.GHA_DELETE_PACKAGES }}
        script: |
          const imageName = /[^/]*$/.exec(process.env.DOCKER_IMAGE_REPO)[0]
          const basePath = `/orgs/${{ github.repository_owner }}/packages/container/${imageName}/versions`
          for (version of (await github.request(`GET ${basePath}`, { per_page: 100 })).data) {
            if (version.metadata.container.tags.length == 0) {
              console.log(`deleting ${version.name}...`)
              const delResponse = await github.request(`DELETE ${basePath}/${version.id}`)
              console.log(`status: ${delResponse.status}`)
            }
          }