action.yml

name: 'pglite-diff'
description: 'Diffs two SQL setups query results on isolated in-memory Postgres instances -- catches migration regressions.'
author: 'jayblast-spec'
branding:
  icon: 'database'
  color: 'blue'

inputs:
  config:
    description: 'Path to a config module default-exporting { before, after, probes } -- see README.md'
    required: true

outputs:
  ok:
    description: '"true" if every probe matched, "false" otherwise'
    value: ${{ steps.run.outputs.ok }}
  summary:
    description: 'Human-readable summary of the diff report'
    value: ${{ steps.run.outputs.summary }}

runs:
  using: 'composite'
  steps:
    - uses: actions/setup-node@v4
      with:
        node-version: '22.x'

    - name: Build pglite-diff
      shell: bash
      run: |
        cd "${{ github.action_path }}"
        npm ci
        npm run build

    - name: Run pglite-diff
      id: run
      shell: bash
      run: |
        set +e
        OUTPUT_FILE=$(mktemp)
        node "${{ github.action_path }}/dist/cli.js" "${{ inputs.config }}" | tee "$OUTPUT_FILE"
        EXIT_CODE=${PIPESTATUS[0]}
        set -e
        { echo "summary<<PGLITE_DIFF_EOF"; cat "$OUTPUT_FILE"; echo "PGLITE_DIFF_EOF"; } >> "$GITHUB_OUTPUT"
        if [ "$EXIT_CODE" -ne 0 ]; then echo "ok=false" >> "$GITHUB_OUTPUT"; exit 1; else echo "ok=true" >> "$GITHUB_OUTPUT"; fi