name: Nightly Release

on:
  schedule:
  - cron:  '0 0 * * ?'


jobs:
  activity-check:
    runs-on: ubuntu-latest
    continue-on-error: true
    outputs:
      stale: ${{ steps.activity_check.outputs.stale }}
    steps:
      - name:  Activity check
        id: activity_check
        run:   |
          curl -sL https://api.github.com/repos/$GITHUB_REPOSITORY/commits | jq -r '[.[]][0]' > $HOME/commit.json
          date="$(jq -r '.commit.author.date' $HOME/commit.json)"
          timestamp=$(date --utc -d "$date" +%s)
          author="$(jq -r '.commit.author.name' $HOME/commit.json)"
          url="$(jq -r '.html_url' $HOME/commit.json)"
          hours=$(( ( $(date --utc +%s) - $timestamp ) / 3600 ))
          rm -f $HOME/commit.json
          echo "Latest Repository activity : $timestamp $author $url"

          STALE=false
          if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
              echo "[WARNING] Ignoring activity limits : workflow triggered manually"
          else
              echo Repository active last $hours hours ago
              if [ $hours -ge 24 ]; then
                echo "[ERROR] Repository not updated : event<${{ github.event_name }}> not allowed to modify stale repository"
                STALE=true
              fi
          fi
          echo "::set-output name=stale::$STALE"
          
          if [ "$STALE" == "true" ]; then
            exit 1
          fi
        shell: bash


  build:
    needs: activity-check
    if: needs.activity-check.outputs.stale != 'true'
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os:     [ubuntu-20.04, ubuntu-22.04]
    steps:
      - uses: actions/checkout@v2

      - name: initialize submodules
        run: |
          git submodule update --init --recursive --recommend-shallow

      - name: install apt dependencies
        run: sudo apt-get install autoconf automake autotools-dev curl libmpc-dev libmpfr-dev libgmp-dev libusb-1.0-0-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev device-tree-compiler pkg-config libexpat-dev libfl-dev
      
      - name: build toolchain
        run: |
          export RISCV=$PWD/build/riscv
          ./build.sh

      - name: tarball build
        run: tar czvf riscv.tar.gz -C $PWD/build riscv/

      - name: generate prebuilt toolchain name
        id:   toolchain-name-generator
        run: |
          echo ::set-output name=TOOLCHAIN_NAME::rocket-tools-${{ matrix.os }}-nightly

      - uses: actions/upload-artifact@v2
        with:
          name: ${{ steps.toolchain-name-generator.outputs.TOOLCHAIN_NAME }}
          path: riscv.tar.gz


  create-release:
    needs: build
    runs-on: ubuntu-latest
    outputs:
      upload_url: ${{ steps.create_release.outputs.upload_url }}
      asset_matrix: ${{ steps.asset_names.outputs.asset_matrix }}
      datestamp: ${{ env.DATESTAMP }}
    steps:

      - name:  Run Configuration Commands
        run: |
          DATESTAMP="$(date --utc '+%Y.%m.%d')"
          echo "Version: ${DATESTAMP}-nightly"

          # Setup Artifacts Directory
          ARTIFACTS_DIR="/opt/artifacts/"
          mkdir -p $ARTIFACTS_DIR

          # Setup environment variables
          echo "DATESTAMP=${DATESTAMP}" >> $GITHUB_ENV
          echo "DATEWORD=$(date --utc '+%B %d, %Y')" >> $GITHUB_ENV
          echo "ARTIFACTS_DIR=${ARTIFACTS_DIR}" >> $GITHUB_ENV
        shell: bash

      - name: Create Release
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ env.DATESTAMP }}
          release_name: "Nightly: ${{ env.DATEWORD }}"
          body: |
            **Automated Nightly Release**
            ${{ env.DATESTAMP }}-nightly
          draft: false
          prerelease: true

      - name: Download Built Artifacts
        uses: actions/download-artifact@v2
        with:
          path: ${{ env.ARTIFACTS_DIR }}

      # IMPORTANT: Each artifact must only have one file
      - name: Designate Asset Names
        id: asset_names
        run: |
          ASSET_MATRIX=$(
            find ${ARTIFACTS_DIR} -mindepth 2 -maxdepth 2 -type f |
            awk '{
              fs_n=split($0, fs, "/")   # Split file paths
              art_name=fs[fs_n-1]       # Get artifact name
              fname=fs[fs_n]            # Get file name from the artifact
              ext = substr(fs[fs_n], index(fs[fs_n],"."))   # File Extension

              print art_name ":" fname ":" ext # format <artifact name : artifact file : file extension>
            }' |
            jq -R -s -c 'split("\n") | .[:-1] | {   # Split by newlines (remove last entry)
              include: [
                .[] | split(":") | {    # Put it in JSON format
                  artifact: .[0],
                  file: .[1],
                  extension: .[2]
                }
              ] 
            }'
          )

          echo "::set-output name=asset_matrix::${ASSET_MATRIX}"
        shell: bash


  upload-assets:
    needs: create-release
    runs-on: ubuntu-latest
    strategy:
      matrix: ${{ fromJson( needs.create-release.outputs.asset_matrix ) }}
    name: upload ${{ matrix.artifact }}
    steps:

      - uses: actions/download-artifact@v2
        with:
          name: ${{ matrix.artifact }}

      - uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ needs.create-release.outputs.upload_url }}
          asset_path: ${{ matrix.file }}
          asset_name: ${{ matrix.artifact }}-${{ needs.create-release.outputs.datestamp }}-nightly${{ matrix.extension }}
          asset_content_type: application/gzip