action.yml

name: 'PR Visual'
description: 'Generate infographic images from PR diffs using Gemini AI'
author: 'pr-visual'

branding:
  icon: 'image'
  color: 'purple'

inputs:
  gemini-api-key:
    description: 'Gemini API key for image generation'
    required: false
  hosted-api-key:
    description: 'API key for hosted pr-visual service (future)'
    required: false
  prompt:
    description: 'Custom prompt for image generation (bypasses diff analysis)'
    required: false
  style:
    description: 'Visual style: clean, excalidraw, minimal, tech, playful'
    required: false
    default: 'clean'
  comment:
    description: 'Whether to post a comment on the PR'
    required: false
    default: 'true'
  github-token:
    description: 'GitHub token for API access'
    required: false
    default: ${{ github.token }}

outputs:
  image-path:
    description: 'Path to the generated image'
    value: ${{ steps.generate.outputs.image-path }}
  image-url:
    description: 'URL to the image in the repo'
    value: ${{ steps.generate.outputs.image-url }}

runs:
  using: 'composite'
  steps:
    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: '20'

    - name: Install dependencies
      shell: bash
      working-directory: ${{ github.action_path }}
      run: |
        cd action
        npm ci

    - name: Generate PR Visual
      id: generate
      shell: bash
      env:
        GEMINI_API_KEY: ${{ inputs.gemini-api-key }}
        HOSTED_API_KEY: ${{ inputs.hosted-api-key }}
        GITHUB_TOKEN: ${{ inputs.github-token }}
        INPUT_PROMPT: ${{ inputs.prompt }}
        INPUT_STYLE: ${{ inputs.style }}
        INPUT_COMMENT: ${{ inputs.comment }}
        ACTION_PATH: ${{ github.action_path }}
      run: node ${{ github.action_path }}/action/run.js