action.yml

name: 'Altern Open Data Compiler'
description: 'Validate and build awesome list from YAML data files'
author: 'alternbits'
branding:
  icon: 'list'
  color: 'blue'

inputs:
  data-dir:
    description: 'Directory containing data YAML files'
    required: false
    default: 'data'
  meta-dir:
    description: 'Directory containing meta/info.yml and meta/categories.yml'
    required: false
    default: 'meta'
  fail-if-outdated:
    description: 'Fail if the generated output file differs from the committed version'
    required: false
    default: 'true'

outputs:
  output-path:
    description: 'Absolute path to the generated readme file'
    value: ${{ steps.output-path.outputs.output-path }}

runs:
  using: 'composite'
  steps:
    - name: Set up Go
      uses: actions/setup-go@v5
      with:
        go-version: '1.21'
        cache: false

    - name: Build compiler
      shell: bash
      run: go build -o opendata-compiler .
      working-directory: ${{ github.action_path }}/compiler

    - name: Run compiler
      shell: bash
      run: |
        "${{ github.action_path }}/compiler/opendata-compiler" \
          -data "${{ inputs.data-dir }}" \
          -meta "${{ inputs.meta-dir }}"
      working-directory: ${{ github.workspace }}

    - name: Set output path
      id: output-path
      shell: bash
      run: |
        OUTPUT=$("${{ github.action_path }}/compiler/opendata-compiler" -print-out)
        echo "output-path=$OUTPUT" >> $GITHUB_OUTPUT
      working-directory: ${{ github.workspace }}

    - name: Check output file is up to date
      if: ${{ inputs.fail-if-outdated == 'true' }}
      shell: bash
      run: |
        OUTPUT="${{ steps.output-path.outputs.output-path }}"
        git diff --exit-code "$OUTPUT" || (echo "::error::$OUTPUT is out of date. Run the compiler locally and commit the changes." && exit 1)
      working-directory: ${{ github.workspace }}