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

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: ${{ inputs.exclude-patterns }}
      run: |
        bash "${{ github.action_path }}/scripts/generate-rpm-changelog.sh" \
          "$SPEC" "$VERSION"