name: 'Generate RPM %changelog entry'
description: >
  Collect commits since the previous release tag and prepend a
  properly-formatted %changelog entry to an rpm spec file. Keeps
  the changelog in sync with git history automatically on every
  release, avoiding stale dates and forgotten bumps.
author: 'helexa'

branding:
  icon: file-text
  color: blue

inputs:
  spec:
    description: 'Path to the rpm spec file to update.'
    required: true
  version:
    description: >
      Version string for the new entry (without release suffix).
      Typically derived from the git tag, e.g. "0.1.10".
    required: true
  release:
    description: 'Release suffix to append after the version.'
    required: false
    default: '1'
  author:
    description: >
      Name and email for the changelog entry, formatted as
      "Name <email@example.com>".
    required: false
    default: 'Gitea Actions <actions@git.lair.cafe>'
  tag-pattern:
    description: >
      Glob pattern for release tags, used to locate the previous
      release. Default matches the conventional "v*" scheme.
    required: false
    default: 'v*'
  exclude-patterns:
    description: >
      Newline-separated list of grep -E patterns (anchored on the
      bullet "- " prefix) to drop from the generated log. Defaults
      filter out bump-version bot commits and merge commits.
    required: false
    default: |
      ^- chore: bump version
      ^- Merge
  source-dir:
    description: >
      Path to a local git checkout to collect commits from, instead
      of the current working directory. Useful when your packaging
      repo is separate from the upstream source repo and you have
      already cloned the source elsewhere in the workflow.
    required: false
    default: ''
  repo-url:
    description: >
      URL of an external git repository to collect commits from.
      The action will clone (bare, tags-only) this repo into a
      temporary directory and read its history. Mutually exclusive
      with source-dir — if both are set, source-dir wins.
    required: false
    default: ''

runs:
  using: composite
  steps:
    - name: Generate changelog entry
      shell: bash
      env:
        SPEC: ${{ inputs.spec }}
        VERSION: ${{ inputs.version }}
        RELEASE: ${{ inputs.release }}
        CHANGELOG_AUTHOR: ${{ inputs.author }}
        TAG_PATTERN: ${{ inputs.tag-pattern }}
        EXCLUDE_PATTERNS: ${{ inputs.exclude-patterns }}
        SOURCE_DIR: ${{ inputs.source-dir }}
        REPO_URL: ${{ inputs.repo-url }}
      run: |
        bash "${{ github.action_path }}/scripts/generate-rpm-changelog.sh" \
          "$SPEC" "$VERSION"