name: Sync WireGuard-go

on:
  workflow_dispatch:
#  schedule:
#    - cron: '18 2 * * *'

jobs:
  WireGuard-go:

    name: Sync WireGuard-go to the latest

    runs-on: ubuntu-20.04

    env:
      WORKDIR: ./wireguard-go-source
      USERNAME: ${{ secrets.GH_USERNAME }}
      EMAIL: ${{ secrets.GH_EMAIL }}

    steps:
      - name: Checkout code
        uses: actions/checkout@v3.3.0
        with:
          fetch-depth: 0

      - name: Check the official latest version of WireGuard-go
        run: |
          NOW=$(wget -qO- "https://api.github.com/repos/${{ env.USERNAME }}/warp/releases" | grep "tag_name" | grep -i "wireguard-go" | head -n 1 | sed "s/.*_v\(.*\)\".*/\1/g")
          LATEST=$(wget -qO- https://git.zx2c4.com/wireguard-go/ | grep '/wireguard-go/tag' | sed -n 1p | sed "s/.*>\([0-9.]\{1,\}\)<.*/\1/g")
          NOW1=$(echo $NOW | cut -d \. -f1)
          NOW2=$(echo $NOW | cut -d \. -f2)
          NOW3=$(echo $NOW | cut -d \. -f3)
          LATEST1=$(echo $LATEST | cut -d \. -f1)
          LATEST2=$(echo $LATEST | cut -d \. -f2)
          LATEST3=$(echo $LATEST | cut -d \. -f3)
          NOW_VERSION=$(( NOW1*1000000 + NOW2*1000 + NOW3 ))
          LATEST_VERSION=$(( LATEST1*1000000 + LATEST2*1000 + LATEST3 ))
          
          if [ $LATEST_VERSION -gt $NOW_VERSION ]; then
            git clone https://git.zx2c4.com/wireguard-go ${{ env.WORKDIR }}
            cp ./.github/wireguard-go-releaser.yml ${{ env.WORKDIR }}/.goreleaser.yml
            echo "VERSION=$LATEST" >> $GITHUB_ENV
          fi
            
      - name: Set up GoReleaser
        uses: actions/setup-go@v3
        if: ${{ env.VERSION != '' }}
        with:
          go-version: "1.18"

      - name: Cross compile WireGuard-go
        uses: goreleaser/goreleaser-action@v4
        if: ${{ env.VERSION != '' }}
        with:
          distribution: goreleaser
          workdir: ${{ env.WORKDIR }}
          version: latest
          args: release --clean
  
      - name: Release binaries 
        uses: softprops/action-gh-release@v1
        if: ${{ env.VERSION != '' }}
        with:
          tag_name: WireGuard-go_v${{ env.VERSION }}
          files: ${{ env.WORKDIR }}/dist/*.tar.gz
          
      - name: Upload to REPO
        if: ${{ env.VERSION != '' }}
        run: |
          cp -f ${{ env.WORKDIR }}/dist/*.tar.gz ${GITHUB_WORKSPACE}/wireguard-go/
          rm -rf ${{ env.WORKDIR }}
          git config --global user.email "${{ env.EMAIL }}"
          git config --global user.name "${{ env.USERNAME }}"
          git add .
          git commit -m "Wireguard-go V${{ env.VERSION }}, $(date "+%Y/%m/%d")"
          git push