name: 'Update flake.lock'
description: 'Update your flake.lock and send a PR'
inputs:
  inputs:
    description: 'A space-separated list of inputs to update. Leave empty to update all inputs.'
    required: false
    default: ''
  token:
    description: 'GITHUB_TOKEN or a `repo` scoped Personal Access Token (PAT)'
    required: false
    default: ${{ github.token }}
  commit-msg:
    description: 'The message provided with the commit'
    required: false
    default: "flake.lock: Update"
  branch:
    description: 'The branch of the PR to be created'
    required: false
    default: "update_flake_lock_action"
  pr-title:
    description: 'The title of the PR to be created'
    required: false
    default: "flake.lock: Update"
  pr-labels:
    description: 'A comma or newline separated list of labels to set on the Pull Request to be created'
    required: false
    default: ''
  sign-commits:
    description: 'Set to true if the action should sign the commit with GPG'
    required: false
    default: ''
  gpg-private-key:
    description: 'GPG Private Key with which to sign the commits in the PR to be created'
    required: false
    default: ''
  gpg-passphrase:
    description: 'GPG Private Key Passphrase for the GPG Private Key with which to sign the commits in the PR to be created'
    required: false
    default: ''
outputs:
  pull-request-number:
    description: 'The number of the opened pull request'
    value: ${{ steps.create-pr.outputs.pull-request-number }}
runs:
  using: "composite"
  steps:
    - name: Import bot's GPG key for signing commits
      if: ${{ inputs.sign-commits }}
      id: import-gpg
      uses: crazy-max/ghaction-import-gpg@v4
      with:
        gpg_private_key: ${{ inputs.gpg-private-key }}
        passphrase: ${{ inputs.gpg-passphrase }}
        git_config_global: true
        git_user_signingkey: true
        git_commit_gpgsign: true
    - name: Run update-flake-lock.sh (signed commit)
      run: $GITHUB_ACTION_PATH/update-flake-lock.sh
      if: ${{ inputs.sign-commits }}
      shell: bash
      env:
        GIT_AUTHOR_NAME: ${{ steps.import-gpg.outputs.name }}
        GIT_AUTHOR_EMAIL: ${{ steps.import-gpg.outputs.email }}
        GIT_COMMITTER_NAME: ${{ steps.import-gpg.outputs.name }}
        GIT_COMMITTER_EMAIL: ${{ steps.import-gpg.outputs.email }}
        TARGETS: ${{ inputs.inputs }}
        COMMIT_MSG: ${{ inputs.commit-msg }}
    - name: Run update-flake-lock.sh (no commit signing)
      run: $GITHUB_ACTION_PATH/update-flake-lock.sh
      if: ${{ !inputs.sign-commits }}
      shell: bash
      env:
        GIT_AUTHOR_NAME: github-actions[bot]
        GIT_AUTHOR_EMAIL: <github-actions[bot]@users.noreply.github.com>
        GIT_COMMITTER_NAME: github-actions[bot]
        GIT_COMMITTER_EMAIL: <github-actions[bot]@users.noreply.github.com>
        TARGETS: ${{ inputs.inputs }}
        COMMIT_MSG: ${{ inputs.commit-msg }}
    - run: |
        content="$(git log --format=%b -n 1)"
        content="${content//'%'/'%25'}"
        content="${content//$'\n'/'%0A'}"
        content="${content//$'\r'/'%0D'}"
        echo "::set-output name=msg::$content"
      shell: bash
      id: commit_message
    - name: Create PR
      id: create-pr
      uses: peter-evans/create-pull-request@v3
      with:
        branch: ${{ inputs.branch }}
        delete-branch: true
        title: ${{ inputs.pr-title }}
        token: ${{ inputs.token }}
        labels: ${{ inputs.pr-labels }}
        body: |
          Automated changes by the [update-flake-lock](https://github.com/DeterminateSystems/update-flake-lock) GitHub Action.

          ```
          ${{ steps.commit_message.outputs.msg }}
          ```

          ### Running GitHub Actions on this PR

          GitHub Actions will not run workflows on pull requests which are opened by a GitHub Action.

          To run GitHub Actions workflows on this PR, run:

          ```sh
          git branch -D update_flake_lock_action
          git fetch origin
          git checkout update_flake_lock_action
          git commit --amend --no-edit
          git push origin update_flake_lock_action --force
          ```