action.yml

name: 'Sync to GitLab'
description: 'Automatically sync your GitHub repository with GitLab'
branding:
  icon: 'arrow-right'
  color: 'orange'
inputs:
  gitlab_url:
    description: 'The URL of the GitLab repository (e.g., https://gitlab.com/user/repo.git)'
    required: true
  username:
    description: 'Your GitLab username'
    required: true
  gitlab_pat:
    description: 'Your GitLab Personal Access Token with required permissions'
    required: true
  force_push:
    description: 'Whether to force push to GitLab. Defaults to false.'
    required: false
    default: 'false'
  git_lfs:
    description: 'Whether to sync Git LFS objects to GitLab. Defaults to false.'
    required: false
    default: 'false'
runs:
  using: 'composite'
  steps:
    - name: Checkout code
      uses: actions/checkout@v5
      with:
        fetch-depth: 0
        persist-credentials: false
        lfs: ${{ inputs.git_lfs }}
    - name: Validate inputs
      env:
        GITLAB_URL: ${{ inputs.gitlab_url }}
        USERNAME: ${{ inputs.username }}
        GITLAB_PAT: ${{ inputs.gitlab_pat }}
      run: |
        errors=()

        if [[ -z "$GITLAB_URL" ]]; then
          errors+=("gitlab_url is not set. Please add GITLAB_URL to your repository secrets.")
        elif [[ ! "$GITLAB_URL" =~ ^https?://[^/]+/.+ ]]; then
          errors+=("gitlab_url format is invalid. Expected: https://gitlab.com/user/repo.git")
        fi

        if [[ -z "$USERNAME" ]]; then
          errors+=("username is not set. Please add USERNAME to your repository secrets.")
        fi

        if [[ -z "$GITLAB_PAT" ]]; then
          errors+=("gitlab_pat is not set. Please add GITLAB_PAT to your repository secrets.")
        fi

        if [[ ${#errors[@]} -gt 0 ]]; then
          echo "::error::Configuration Error(s):"
          for err in "${errors[@]}"; do
            echo "::error::  - $err"
          done
          echo ""
          echo "To fix this, go to Settings > Secrets and variables > Actions in your GitHub repository."
          exit 1
        fi

        echo "All inputs validated successfully."
      shell: bash
    - name: Push to GitLab
      env:
        GITLAB_URL: ${{ inputs.gitlab_url }}
        USERNAME: ${{ inputs.username }}
        GITLAB_PAT: ${{ inputs.gitlab_pat }}
        FORCE_PUSH: ${{ inputs.force_push }}
        GIT_LFS: ${{ inputs.git_lfs }}
      run: |
        gitlab_repo_url="${GITLAB_URL#https://}"
        gitlab_repo_url_with_credentials="https://${USERNAME}:${GITLAB_PAT}@${gitlab_repo_url}"
        echo "::add-mask::$gitlab_repo_url_with_credentials"
        git remote add gitlab "$gitlab_repo_url_with_credentials"
        branch_name=$(echo "$GITHUB_REF" | sed 's/refs\/heads\///')
        if [[ "$GIT_LFS" == "true" ]]; then
          git lfs push --all gitlab
        fi
        push_command="git push gitlab $branch_name"
        if [[ "$FORCE_PUSH" == "true" ]]; then
          push_command="$push_command --force"
        fi
        $push_command
      shell: bash