name: "PR Commenter Diff-Aware"
description: "Post comments to changed lines in a PR based on a git diff, for GitHub or Gitea. Supports multiline templates."
author: "Trez.One"

branding:
  icon: "paperclip"
  color: "blue"

runs:
  using: "composite"
  steps:
    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: "3.11"

    - name: Install dependencies
      shell: bash
      run: pip install requests

    - name: Run PR commenter
      run: python git-auto-comment.py
      shell: python
      env:
        PLATFORM: ${{ inputs.platform }}
        TOKEN: ${{ inputs.token }}
        API_URL: ${{ inputs.api_url }}
        REPO_OWNER: ${{ inputs.repo_owner }}
        REPO_NAME: ${{ inputs.repo_name }}
        PR_INDEX: ${{ inputs.pr_index }}
        DIFF: ${{ inputs.diff }}
        COMMENT_TEMPLATE: ${{ inputs.comment_template }}

inputs:
  platform:
    description: "Target platform: github or gitea"
    required: true
    default: "github"
  token:
    description: "API token for authentication"
    required: true
  api_url:
    description: "Gitea API URL (only required for Gitea, e.g., https://gitea.example.com/api/v1)"
    required: false
  repo_owner:
    description: "Repository owner (user/org)"
    required: true
  repo_name:
    description: "Repository name"
    required: true
  pr_index:
    description: "PR number (GitHub) or index (Gitea)"
    required: true
  diff:
    description: "Git diff to parse, in standard format (generated via git diff)"
    required: true
  comment_template:
    description: |
      Multiline template for comment body.
      Use placeholders:
        - {line}  → replaced by single changed line
        - {lines} → replaced by all added lines in the file
    required: true
    default: "Auto-comment: changed line -> {line}"