action.yml

name: "Reactivate Repository"
description: "GitHub action to prevent GitHub from suspending cronjob based triggers due to repository inactivity."

branding:
  icon: "refresh-cw"
  color: "gray-dark"
  
inputs:
  commit_message:
    description: "Commit message used while committing to the repository."
    default: "github-actions: Reactivate repository"
    required: false
  committer_username:
    description: "Username used while committing to the repository."
    default: "GitHub Actions [Bot]"
    required: false
  committer_email:
    description: "Email used while committing to the repository."
    default: "github-actions[bot]@users.noreply.github.com"
    required: false
  days_elapsed:
    description: "Time elapsed from the last commit to trigger a new automated commit (in days)"
    default: "50"
    required: false
  github_token:
    description: "GitHub access token with `contents: write` permission."
    default: ${{ github.token }}
    required: false

runs:
  using: "composite"
  
  steps:
    - name: "Checkout Repository"
      uses: "actions/checkout@v3"
    
    - name: "Generate Metadata"
      id: "metadata"
      shell: "bash"
      env:
        GITHUB_TOKEN: ${{ github.token }}
      run: |
        lastCommitDateISO8601=$(gh api repos/${{ github.repository }}/branches/${{ github.event.repository.default_branch }} --jq '.commit.commit.author.date')
        lastCommitUnixTimestamp=$(date -d $lastCommitDateISO8601 +%s)
        
        currentUnixTimestamp=$(date +%s)
        
        maximumTimeElapsedSinceLastCommit=$(( ${{ inputs.days_elapsed }} * 60 * 60 * 24 ))
        elapsedTimeSinceLastCommit=$(($currentUnixTimestamp-$lastCommitUnixTimestamp))
        
        if (( $elapsedTimeSinceLastCommit > $maximumTimeElapsedSinceLastCommit )); then 
          repositoryStatus="inactive"
        else
          repositoryStatus="active"
        fi
        
        echo "repositoryStatus=$repositoryStatus" >> "$GITHUB_OUTPUT"
    - name: Reactivate Repository
      if: ${{ steps.metadata.outputs.repositoryStatus == 'inactive' }}
      shell: "bash"
      run: |
          git config --global user.name "${{ inputs.committer_username }}"
          git config --global user.email "${{ inputs.committer_email }}"
          git remote set-url origin https://x-access-token:${{ inputs.github_token }}@github.com/$GITHUB_REPOSITORY
          git commit --allow-empty -s -m "${{ inputs.commit_message }}"
          git push