on:
  schedule:
    - cron: '0 5 * * *'
  push:
    tags:
      - '*'
    branches:
      - "*"

jobs:
  validate:
    runs-on: ubuntu-latest
    outputs:
      build: ${{ steps.new_version.outputs.build }}
      tag: ${{ steps.new_version.outputs.tag }}
    steps:
      - uses: actions/checkout@v4

      - name: Get latest release version
        id: new_version
        run: |
          CURRENT=`cat .version`
          LATEST=`curl --silent https://api.github.com/repos/jonnenauha/prometheus_varnish_exporter/releases/latest | jq -r .tag_name | sed "s/v//"`
          echo "current registered version: $CURRENT"
          echo "latest version on remote repo: $LATEST"
          if awk "BEGIN {exit !($LATEST > $CURRENT)}"; then 
            echo $LATEST > .version
            echo "build=true" >> $GITHUB_OUTPUT
            echo "tag=$LATEST" >> $GITHUB_OUTPUT
          else
            echo "build=false" >> $GITHUB_OUTPUT
          fi
          echo "VERSION=`cat .version`" >> $GITHUB_ENV

      - uses: stefanzweifel/git-auto-commit-action@v6
        with:
          branch: main
          file_pattern: '.version'
          commit_user_name: gitea-actions[bot]
          commit_user_email: no-reply@brainsys.io
          commit_message: gitea-actions auto commit - update version
          tagging_message: '${{ env.VERSION }}'
          push_options: '--force'

      - name: DEBUG: build value
        run: echo "${{ steps.new_version.outputs.build }}"

      - name: DEBUG: tag value
        run: echo "${{ steps.new_version.outputs.tag }}"

  build:
    needs: validate
    if: needs.validate.outputs.build == 'true'
    timeout-minutes: 2
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        ref: '${{ jobs.validate.ouputs.tag }}'

      - name: Set version to env vars
        run: |
          echo "VERSION=`cat .version`" >> $GITHUB_ENV

      - name: Setup go
        uses: actions/setup-go@v4
        with:
          go-version: '>=1.20'

      - name: Checkout varnish exporter
        run: git clone https://github.com/jonnenauha/prometheus_varnish_exporter varnish

      - name: Build varnish exporter for GNU/Linux / amd64
        run: GOOS=linux GOARCH=amd64 go build -o ../bin/prometheus-varnish-exporter-amd64
        working-directory: varnish

      - name: Create deb dir tree
        run: |
          mkdir -p varnish-exporter-amd64/usr/bin
          mkdir -p varnish-exporter-amd64/DEBIAN

      - name: Copy binaries
        run: |
          cp bin/prometheus-varnish-exporter-amd64 varnish-exporter-amd64/usr/bin/prometheus-varnish-exporter

      - name: Prepare amd64 control file
        run: |
          #VERSION=`cat .version`
          echo "Package: varnish-exporter" > varnish-exporter-amd64/DEBIAN/control
          echo "Version: $VERSION" >> varnish-exporter-amd64/DEBIAN/control
          echo "Maintainer: Ludovic Cartier <ludovic.cartier@alterway.fr>" >> varnish-exporter-amd64/DEBIAN/control
          echo "Architecture: amd64" >> varnish-exporter-amd64/DEBIAN/control
          echo "Homepage: https://git.brainsys.io/packages/prometheus-exporters" >> varnish-exporter-amd64/DEBIAN/control
          echo "Description: Prometheus Exporters package for GNU/Linux Debian" >> varnish-exporter-amd64/DEBIAN/control          

      - name: Build deb files
        run: |
          dpkg -b varnish-exporter-amd64 bin/prometheus-varnish-exporter-amd64.deb

      - name: Prepare apt repo upload
        run: |
          mv bin/prometheus-varnish-exporter-amd64.deb prometheus-varnish-exporter_$VERSION-1_amd64.deb

      - name: Release packages
        run: |
          curl -s -u "${{ secrets.PACKAGE_TOKEN }}" --upload-file prometheus-varnish-exporter_$VERSION-1_amd64.deb \
            https://git.brainsys.io/api/packages/packages/debian/pool/stable/main/upload

      - name: Create release
        uses: https://gitea.com/actions/release-action@main
        with:
          draft: false
          prerelease: false
          files: |-
            bin/**            
          api_key: "${{ secrets.RELEASE_TOKEN }}"