action.yml

name: "Sync Upstream"
description: "Synchronize a branch from an upstream repository to a target repository"
color: "blue"
icon: "git-merge"
inputs:
  github_token:
    description: "GitHub token for authentication"
    required: true
  target_repository:
    description: "Target repository in the format owner/repo"
    required: true
  target_branch:
    description: "Branch in the target repository to sync"
    required: true
  upstream_repository:
    description: "Upstream repository in the format owner/repo"
    required: true
  upstream_branch:
    description: "Branch in the upstream repository to sync"
    required: true
runs:
  using: "composite"
  steps:
    - name: Checkout target branch
      uses: actions/checkout@v4
      with:
        token: ${{ inputs.github_token }}
        repository: ${{ inputs.target_repository }}

    - name: Add upstream repository
      run: |
        git remote add upstream https://github.com/${{ inputs.upstream_repository }}.git
        git fetch upstream ${{ inputs.upstream_branch }}
      shell: bash

    - name: Sync target branch with upstream
      run: |
        git checkout -B ${{ inputs.target_branch }}
        git reset --hard upstream/${{ inputs.upstream_branch }}
      shell: bash

    - name: Sync tags with upstream
      run: |
        git fetch upstream --tags
        git push origin --tags --force
      shell: bash

    - name: Push synchronized branch
      run: git push origin ${{ inputs.target_branch }} --force
      shell: bash