name: build & package varnish exporter

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

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Get version
        run: |
          TAG=${{ gitea.ref_name }}
          echo "VERSION=${TAG#v}" | tee -a $GITEA_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: |
          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 }}"
        continue-on-error: true