release.yml

name: 'Release'

on:
  release:
    types: [created, edited, prereleased]

permissions:
  contents: write

jobs:
  release:
    name: 'release'
    runs-on: ubuntu-20.04
    timeout-minutes: 10
    environment: default
    defaults:
      run:
        shell: bash

    steps:
    - name: Checkout
      uses: actions/checkout@v3

    - name: Configure Go
      uses: actions/setup-go@v3
      with:
        go-version: '^1.18.2'
        check-latest: true
        cache: true

    - name: Build
      run: |
        make build

    - name: Test build
      continue-on-error: true
      run: |
        response=$(build/lavad status --node http://public-rpc.lavanet.xyz:80/rpc/ | jq '.NodeInfo')
        if [ -z "${response}" ]; then
          echo "The binary fails to connect to a node."
          exit 1
        else
          echo $response
          echo "The binary is working as expected."
        fi

    - name: Check for existing assests
      id: existing_asset
      run: |
        if [ "${{ github.event.release.assets[0].name }}" = "lavad" ]; then
          echo "URL=${{ github.event.release.assets[0].id }}" >> $GITHUB_OUTPUT
          echo "URL=${{ github.event.release.assets[0].url }}" >> $GITHUB_OUTPUT
          echo "CHECK=true" >> $GITHUB_OUTPUT
        else
          echo "CHECK=false" >> $GITHUB_OUTPUT
        fi

    - name: Upload build to release
      run: |
        upload_binary () {
          echo "Uploading binary to: $(echo '${{ github.event.release.upload_url }}' | sed 's/{?name,label}/?name=lavad/g')"
          curl \
          -X POST \
          -H "Accept: application/vnd.github+json" \
          -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
          -H "Content-Type: $(file -b --mime-type build/lavad)" \
          --data-binary @build/lavad \
          $(echo '${{ github.event.release.upload_url }}' | sed 's/{?name,label}/?name=lavad-${{ github.event.release.tag_name }}-linux-amd64/g')
        }

        delete_binary(){
          echo "Deleting existing binary"
          curl \
            -X DELETE \
            -H "Accept: application/vnd.github+json" \
            -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
            ${{ steps.existing_asset.outputs.URL }}
        }

        if ${{ steps.existing_asset.outputs.CHECK }}; then
          delete_binary
          upload_binary
        else 
          upload_binary
        fi

    - name: Check for existing Checksum
      id: existing_checksum
      run: |
        #Get Checksum of new build
        export CHECKSUM=$(sha256sum build/lavad | cut -d " " -f1)

        #Get the existing body
        existing_body=$(curl \
          -H "Accept: application/vnd.github+json" \
          -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
          -H "Content-Type: $(file -b --mime-type build/lavad)" \
          ${{ github.event.release.url }} | jq '.body')
        
        if [[ $existing_body == *"$CHECKSUM"* ]]; then
          echo "CHECK=true" >> $GITHUB_OUTPUT
          echo "Checksum hasn't changed."
        else
          echo "CHECK=false" >> $GITHUB_OUTPUT
        cat <<EOF >> /tmp/body
        $(echo $existing_body | sed '$s/.$//')\r\nChecksum $CHECKSUM"
        EOF
          echo -E "NEW_BODY=$(cat /tmp/body)" >> $GITHUB_OUTPUT
        fi

    - name: Append Binary Checksum
      uses: actions/github-script@v6
      if: ${{ steps.existing_checksum.outputs.CHECK }} == 'false'
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        script: |
          github.rest.repos.updateRelease({
            owner: context.repo.owner,
            repo: context.repo.repo,
            release_id: ${{ github.event.release.id }},
            body: ${{ steps.existing_checksum.outputs.NEW_BODY }}
          })