action.yml

name: 'Push Changes'
author: 'Pete Sramek'
description: 'Push changes to a specified branch in the repository.'
inputs:
  # Required
  commit-message:
    description: 'The commit message to use when pushing changes.'
    required: true
# Optional
  dotnet_sdk_version:
    description: '.NET SDK version. Default: 10.x'
    required: false
    default: '10.x'
  artifact-name:
    description: 'Name of the artifact to download before pushing changes. Default: '''''
    required: false
    default: ''
  working-directory:
    description: 'The working directory where the changes will be pushed from. Default ''.'''
    required: false
    default: '.'
  target-branch:
    description: 'The branch to push changes to.. Default: '''''
    required: false
    default: ''

runs:  
  using: "composite"
  steps:
    - name: 'Checkout ${{ github.head_ref || github.ref }}'
      uses: actions/checkout@v6

    - name: Dotnet Setup
      uses: actions/setup-dotnet@v4
      with:
        dotnet-version: ${{ env.dotnet-sdk-version }}

    - name: Download a single artifact
      if: ${{ inputs.artifact-name != '' }}
      uses: actions/download-artifact@v8
      with:
        name: ${{ inputs.artifact-name }}
        path: ${{ inputs.working-directory }}

    - name: Stage changes in ${{ inputs.working-directory }}
      shell: bash
      run: |
        git add .
      working-directory: ${{ inputs.working-directory }}

    - if: runner.os == 'Windows'
      shell: bash
      run: |
        git config --global core.autocrlf false
        git config --global core.eol lf

    - if: runner.os != 'Windows'
      shell: bash
      run: |
        git config --global core.autocrlf true
        git config --global core.eol lf

    - name: Create or switch to ${{ inputs.target-branch }}
      if: ${{ inputs.target-branch != '' }}
      shell: bash
      run: |
        git fetch origin
        git stash push --keep-index
        if git show-ref --verify --quiet refs/heads/${{ inputs.target-branch }}; then
          echo "Branch ${{ inputs.target-branch }} already exists, switching to it."
          git checkout ${{ inputs.target-branch }} --force
          git pull origin ${{ inputs.target-branch }}
        else
          echo "Branch ${{ inputs.target-branch }} does not exist, creating it."
          git checkout -b ${{ inputs.target-branch }} origin/${{ inputs.target-branch }} --force || git checkout -b ${{ inputs.target-branch }} --force
          git pull origin ${{ inputs.target-branch }}
        fi
        git stash apply

    - name: Validate changes
      id: validate
      shell: bash
      run: |
        set +e
        git diff --quiet --exit-code --cached
        echo has-changes="$?" >> $GITHUB_OUTPUT
        set -e
      working-directory: ${{ inputs.working-directory }}

    - name: Configure git identity
      if: ${{ fromJSON(steps.validate.outputs.has-changes) == '1' }}
      uses: './.github/actions/git/configure-identity'

    - name: Push changes to ${{ github.head_ref || github.ref }}
      if: ${{ fromJSON(steps.validate.outputs.has-changes) == '1' }}
      shell: bash
      run: |
        git commit -m '${{ inputs.commit-message }}'
        git pull --rebase origin ${{ github.head_ref || github.ref }}
        git push
      working-directory: ${{ inputs.working-directory }}