name: Build

on:
  push:
  
jobs:

  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2

    - name: Set up Go
      uses: actions/setup-go@v2
      with:
        go-version: 1.17

    - name: Build
      run: |
        #see https://en.wikipedia.org/wiki/Raspberry_Pi#Specifications for RPi arm versions
        #see https://github.com/golang/go/wiki/GoArm
        platforms=("windows/amd64" "windows/386" "darwin/amd64" "linux/386" "linux/amd64" "linux/arm/6" "linux/arm/7" "linux/arm64/8" "freebsd/386" "freebsd/amd64")
        mkdir -p releases
        for platform in "${platforms[@]}"
        do
            platform_split=(${platform//\// })
            GOOS=${platform_split[0]}
            GOARCH=${platform_split[1]}
            GOARM=${platform_split[2]}
            output_name='digitalocean-dynamic-dns-ip-'$GOOS'-'$GOARCH
            if [[ ! -z "$GOARM" ]]; then
                output_name+="v${GOARM}"
                # arm v8 is only supported for ARCH=arm64 and requires an empty GOARM version
                if [[ "8" -eq "$GOARM" ]]; then
                    GOARM=""
                fi
            fi
            if [ $GOOS = "windows" ]; then
                output_name+='.exe'
            fi
            env GOOS="$GOOS" GOARCH="$GOARCH" GOARM="$GOARM" go build -o "releases/$output_name"
            if [ $? -ne 0 ]; then
                echo 'An error has occurred! Aborting the script execution...'
                exit 1
            fi
        done