action.yml

name: Bot Defaults
author: Daniel Cazzulino
description: |
    A GitHub action that sets git defaults (name, email, author) for 
    automated bot workflows from secrets or env vars.

inputs:
  name: 
    description: The default name of the bot account. Defaults to $GITHUB_ACTOR.
    required: false
    default: ${{ github.actor }}
  email: 
    description: The default email of the bot account. Defaults to $GITHUB_ACTOR@users.noreply.github.com.
    required: false
    default: '${{ github.actor }}@users.noreply.github.com'
  gh_token:
    description: The token to set as $GH_TOKEN environment variable.
    required: false
    default: ''
  github_token:
    description: Fallback token to use for $GH_TOKEN if gh_token is empty.
    required: false
    default: ${{ github.token }}

branding:
  icon: "edit-3"
  color: "purple"

runs:
  using: "composite"
  steps:
    - name: 🤖 defaults
      shell: bash
      run: |
        if [ -z "$GH_TOKEN" ]
        then
          if [ -z "${{ inputs.gh_token }}" ]
          then
            if [ -z "${{ inputs.github_token }}" ]
            then
              echo "Either gh_token or github_token must have a value."
              exit 1
            fi
            echo "Using github_token from inputs"
            echo "GH_TOKEN=${{ inputs.github_token }}" >> $GITHUB_ENV
            echo "bot-token=${{ inputs.github_token }}" >> $GITHUB_OUTPUT
          else
            echo "Using gh_token from inputs"
            echo "GH_TOKEN=${{ inputs.gh_token }}" >> $GITHUB_ENV
            echo "bot-token=${{ inputs.gh_token }}" >> $GITHUB_OUTPUT
          fi
        else
          echo "bot-token=$GH_TOKEN" >> $GITHUB_OUTPUT
        fi

        if [ -z "$BOT_NAME"]
        then
          if [ -z "${{ inputs.name }}" ]
          then
            echo "Using default GITHUB_ACTOR as BOT_NAME"
            BOT_NAME="$GITHUB_ACTOR"
          else
            echo "Using custom name from inputs"
            BOT_NAME="${{ inputs.name }}"
          fi
          echo "BOT_NAME=$BOT_NAME" >> $GITHUB_ENV
        fi
        echo "bot-name=$BOT_NAME" >> $GITHUB_OUTPUT

        if [ -z "$BOT_EMAIL"]
        then
          if [ -z "${{ inputs.email }}" ]
          then
            echo "Using default email as BOT_EMAIL"
            BOT_EMAIL="$GITHUB_ACTOR@users.noreply.github.com"
          else
            echo "Using custom email from inputs"
            BOT_EMAIL="${{ inputs.email }}"
          fi
          echo "BOT_EMAIL=$BOT_EMAIL" >> $GITHUB_ENV
        fi
        echo "bot-email=$BOT_EMAIL" >> $GITHUB_OUTPUT
        
        if [ -z "$BOT_AUTHOR"]
        then
          echo "Using default BOT_NAME <BOT_EMAIL> as BOT_AUTHOR"
          BOT_AUTHOR="$BOT_NAME <$BOT_EMAIL>"
          echo "BOT_AUTHOR=$BOT_AUTHOR" >> $GITHUB_ENV
        fi
        echo "bot-author=$BOT_AUTHOR" >> $GITHUB_OUTPUT

        git config --global user.name $BOT_NAME
        git config --global user.email $BOT_EMAIL