name: Build, Test, Deploy

on:
  push:
    branches:
      - '**'
  pull_request:
  release:
    types: [published]
  workflow_dispatch:

jobs:
  smoke-tests:
    if: |
      github.event_name == 'push'
      || github.event_name == 'release'
      || (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository)
      || github.event_name == 'workflow_dispatch'

    outputs:
      GIT_TAG: ${{ steps.variables.outputs.GIT_TAG }}
      GIT_BRANCH: ${{ steps.variables.outputs.GIT_BRANCH }}
      OUTPUT_DIR: ${{ steps.variables.outputs.OUTPUT_DIR }}

    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout code
        uses: actions/checkout@v4.1.1
      -
        name: "Calculate required variables"
        id: variables
        run: |
          GIT_TAG=${{ github.event.release.tag_name }}
          # If GIT_TAG is set then GIT BRANCH should be "master", else set it from GITHUB_REF
          GIT_BRANCH=$([ -n "${GIT_TAG}" ] && echo "master" || echo "${GITHUB_REF#refs/*/}")
          echo "GIT_BRANCH=${GIT_BRANCH}" >> $GITHUB_OUTPUT
          echo "GIT_TAG=${GIT_TAG}" >> $GITHUB_OUTPUT
          echo "OUTPUT_DIR=${GIT_TAG:-${GIT_BRANCH}}" >> $GITHUB_OUTPUT
      -
        name: "Check git branch name depth"
        env:
          GIT_BRANCH: ${{ steps.variables.outputs.GIT_BRANCH }}
        run: |
          IFS='/';
          read -r -a branch <<<"${GIT_BRANCH}";
          if [[ "${#branch[@]}" -gt 2 ]]; then echo "Error: Your branch name contains more than one subdir, which will cause issues with the build process." && FAIL=1; fi;
          unset IFS;
          # If FAIL is 1 then we fail.
          [[ $FAIL == 1 ]] && exit 1 || echo "Branch name depth check passed."
        shell: bash

  build:
    runs-on: ubuntu-latest
    needs: smoke-tests
    strategy:
      fail-fast: false
      matrix:
        include:
          - platform: linux/amd64
            bin_name: pihole-FTL-amd64
          - platform: linux/386
            bin_name: pihole-FTL-386
          - platform: linux/arm/v6
            bin_name: pihole-FTL-armv6
          - platform: linux/arm/v7
            bin_name: pihole-FTL-armv7
          - platform: linux/arm64/v8
            bin_name: pihole-FTL-arm64
          - platform: linux/riscv64
            bin_name: pihole-FTL-riscv64

    env:
      CI_ARCH: ${{ matrix.platform }}
      GIT_BRANCH: ${{ needs.smoke-tests.outputs.GIT_BRANCH }}
      GIT_TAG: ${{ needs.smoke-tests.outputs.GIT_TAG }}

    steps:
      -
        name: Checkout code
        uses: actions/checkout@v4.1.1
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3.0.0
      -
        name: Print directory contents
        run: ls -l
      -
        name: Build and test FTL in ftl-build container (QEMU)
        uses: Wandalen/wretry.action@v1.3.0
        with:
          attempt_limit: 3
          action: docker/build-push-action@v5.0.0
          with: |
            platforms: ${{ matrix.platform }}
            pull: true
            push: false
            context: .
            target: result
            file: .github/Dockerfile
            outputs: |
              type=tar,dest=build.tar
            build-args: |
              "CI_ARCH=${{ matrix.platform }}"
              "GIT_BRANCH=${{ needs.smoke-tests.outputs.GIT_BRANCH }}"
              "GIT_TAG=${{ needs.smoke-tests.outputs.GIT_TAG }}"
      -
        name: List files in current directory
        run: ls -l
      -
        name: Extract FTL binary from container
        run: |
          tar -xf build.tar pihole-FTL
      -
        name: "Generate checksum file"
        run: |
          mv pihole-FTL "${{ matrix.bin_name }}"
          sha1sum pihole-FTL-* > ${{ matrix.bin_name }}.sha1
      -
        name: Store binary artifacts for later deployoment
        if: github.event_name != 'pull_request'
        uses: actions/upload-artifact@v3.1.3
        with:
          name: tmp-storage
          path: '${{ matrix.bin_name }}*'
      -
        name: Extract documentation files from container
        if: github.event_name != 'pull_request' && matrix.platform == 'linux/amd64'
        run: |
          tar -xf build.tar api-docs.tar.gz
      -
        name: Upload documentation artifacts for deployoment
        if: github.event_name != 'pull_request' && matrix.platform == 'linux/amd64'
        uses: actions/upload-artifact@v3.1.3
        with:
          name: tmp-storage
          path: 'api-docs.tar.gz'

  deploy:
    if: github.event_name != 'pull_request'
    needs: [smoke-tests, build]
    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout code
        uses: actions/checkout@v4.1.1
      -
        name: Get Binaries and documentation built in previous jobs
        uses: actions/download-artifact@v3.0.2
        id: download
        with:
          name: tmp-storage
          path: ftl-builds/
      -
        name: Display structure of downloaded files
        run: ls -R
        working-directory: ${{steps.download.outputs.download-path}}
      -
        name: Install SSH Key
        uses: benoitchantre/setup-ssh-authentication-action@1.0.1
        with:
          private-key: ${{ secrets.SSH_KEY }}
          known-hosts: ${{ secrets.KNOWN_HOSTS }}
      -
        name: Untar documentation files
        working-directory: ${{steps.download.outputs.download-path}}
        run: |
          mkdir docs/
          tar xzvf api-docs.tar.gz -C docs/
      -
        name: Display structure of files ready for upload
        run: ls -R
        working-directory: ${{steps.download.outputs.download-path}}
      -
        name: Transfer Builds to Pi-hole server for pihole checkout
        if: github.actor != 'dependabot[bot]'
        env:
          USER: ${{ secrets.SSH_USER }}
          HOST: ${{ secrets.SSH_HOST }}
          TARGET_DIR: ${{ needs.smoke-tests.outputs.OUTPUT_DIR }}
          SOURCE_DIR: ${{ steps.download.outputs.download-path }}
        run: |
          bash ./deploy.sh
      -
        name: Attach binaries to release
        if: github.event_name == 'release'
        uses: softprops/action-gh-release@v1
        with:
          files: |
            ${{ steps.download.outputs.download-path }}/*