build.yml

name: Build Debian Package

on:
  repository_dispatch:
    types: [release-tagged]
  workflow_dispatch:
    inputs:
        tag:
            description: 'Version to build'
            required: true
            default: 'v1.0.0'
        project: 
            description: 'Project to build'
            required: true
            default: 'renterd'
        description:
            description: 'Description of the project'
            required: true
            default: 'Renterd: The Next-Gen Sia Renter'
        workflow_id:
            description: 'Workflow ID from which to download the artifact'
            required: true
            default: ''

jobs:
  build:
      runs-on: ubuntu-latest
      container: debian:stable
      steps:
        - name: Store input in env
          run: |
            if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
              echo "RELEASE_TAG=${{ github.event.inputs.tag }}" >> $GITHUB_ENV
              echo "PROJECT=${{ github.event.inputs.project }}" >> $GITHUB_ENV
              echo "DESCRIPTION=${{ github.event.inputs.description }}" >> $GITHUB_ENV
              echo "WORKFLOW_ID=${{ github.event.inputs.workflow_id }}" >> $GITHUB_ENV
            elif [ "${{ github.event_name }}" = "repository_dispatch" ]; then
              echo "RELEASE_TAG=${{ github.event.client_payload.tag }}" >> $GITHUB_ENV
              echo "PROJECT=${{ github.event.client_payload.project }}" >> $GITHUB_ENV
              echo "DESCRIPTION=${{ github.event.client_payload.description }}" >> $GITHUB_ENV
              echo "WORKFLOW_ID=${{ github.event.client_payload.workflow_id }}" >> $GITHUB_ENV
            fi
            echo "Building ${{ env.PROJECT}} .deb packages for tag ${{ env.RELEASE_TAG }}"

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

        - name: Download release artifacts from workflow
          uses: dawidd6/action-download-artifact@v3
          with: 
            name: ${{ env.PROJECT }}
            path: artifacts
            repo: SiaFoundation/${{ env.PROJECT }}
            run_id: ${{ env.WORKFLOW_ID }}
            workflow_conclusion: success

        - name: Build .deb Package
          shell: bash
          run: |
            TAG=${{ env.RELEASE_TAG }}
            VERSION=${TAG:1}

            for arch in amd64 arm64; do
                BUILD_NAME=${{ env.PROJECT }}_${VERSION}_${arch}

                # Create the directory structure for the .deb package
                mkdir -p ${BUILD_NAME}/DEBIAN
                mkdir -p ${BUILD_NAME}/usr/bin
                mkdir -p ${BUILD_NAME}/etc/systemd/system

                # Copy the ${{ env.PROJECT }} binary
                unzip ./artifacts/${{ env.PROJECT }}_linux_${arch}.zip -d ./artifacts/${arch}/
                cp ./artifacts/${arch}/${{ env.PROJECT }} ${BUILD_NAME}/usr/bin/${{ env.PROJECT }}

                # Create the control file
                echo "Package: ${{ env.PROJECT }}" > ${BUILD_NAME}/DEBIAN/control
                echo "Version: $VERSION" >> ${BUILD_NAME}/DEBIAN/control
                echo "Architecture: ${arch}" >> ${BUILD_NAME}/DEBIAN/control
                echo "Maintainer: The Sia Foundation <hello@sia.tech>" >> ${BUILD_NAME}/DEBIAN/control
                echo "Description: ${DESCRIPTION}" >> ${BUILD_NAME}/DEBIAN/control
                echo "Homepage: https://github.com/SiaFoundation/${{ env.PROJECT }}" >> ${BUILD_NAME}/DEBIAN/control

                # Create systemd service file
                echo "[Unit]" > ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service
                echo "Description=${DESCRIPTION}" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service
                echo "" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service
                echo "After=network.target" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service

                echo "[Service]" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service
                echo "ExecStart=/usr/bin/${{ env.PROJECT }}" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service
                echo "WorkingDirectory=/var/lib/${{ env.PROJECT }}" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service
                echo "Restart=always" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service
                echo "RestartSec=15" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service
                echo "" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service

                echo "[Install]" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service
                echo "WantedBy=multi-user.target" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service
                echo "Alias=${{ env.PROJECT }}.service" >> ${BUILD_NAME}/etc/systemd/system/${{ env.PROJECT }}.service

                # Create the prerem script
                echo "#!/bin/sh" > ${BUILD_NAME}/DEBIAN/prerm
                echo "systemctl stop ${{ env.PROJECT }}.service" >> ${BUILD_NAME}/DEBIAN/prerm
                echo "systemctl disable ${{ env.PROJECT }}.service" >> ${BUILD_NAME}/DEBIAN/prerm
                chmod +x ${BUILD_NAME}/DEBIAN/prerm
            
                # Build the .deb file
                echo "Building ${BUILD_NAME}.deb"
                dpkg-deb --build ${BUILD_NAME}

                # Move the .deb file
                mkdir -p ./debian/pool/main/${{ env.PROJECT }}
                mv ${BUILD_NAME}.deb ./debian/pool/main/${{ env.PROJECT }}/

                # Remove the temporary folders
                rm -rf ${BUILD_NAME}

                # Update the Packages file
                mkdir -p debian/dists/stable/main/binary-${arch}
                dpkg-scanpackages ./debian/pool/main/ | gzip -c > debian/dists/stable/main/binary-${arch}/Packages.gz
            done

            # Delete artifacts folder
            rm -rf ./artifacts

        - name: Create Pull Request
          uses: peter-evans/create-pull-request@v5
          with:
            token: ${{ secrets.GITHUB_TOKEN }}
            commit-message: '${{ env.PROJECT }}: ${{ env.RELEASE_TAG }}'
            title: '${{ env.PROJECT }}: ${{ env.RELEASE_TAG }}'
            body: 'This is an automated PR to update ${{ env.PROJECT }} to ${{ env.RELEASE_TAG }}'
            branch: ${{ env.PROJECT }}/update
            base: master