name: build

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

jobs:
  build:
    name: build and node tests
    runs-on: ubuntu-latest
    strategy:
      matrix:
        os: [ ubuntu-latest, windows-latest, macos-latest ]
        node-version: [14.x, 16.x, 18.x]
    steps:
      - uses: actions/checkout@v2

      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v1
        with:
          node-version: ${{ matrix.node-version }}

      - name: install
        run: npm ci
      
      - name: lint
        run: npm run lint
      
      - name: build
        run: npm run build:js
      
      - if: matrix.node-version == '16.x'
        name: docs
        run: npm run docs
      
      - name: node tests
        run: npm run test:node

      - if: matrix.node-version == '16.x'
        name: browser tests
        run: npm run test:browser-headless

  publication:
    needs: build
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      
      - uses: EndBug/version-check@v1
        id: check

      - name: check version changes
        if: steps.check.outputs.changed == 'true'
        run: 'echo "Version change found! New version: ${{ steps.check.outputs.version }} (${{ steps.check.outputs.type }})"'

      - uses: actions/setup-node@v1
        if: steps.check.outputs.changed == 'true'
        with:
          node-version: 16
          registry-url: https://registry.npmjs.org/
      
      - name: install
        if: steps.check.outputs.changed == 'true'
        run: npm ci
      
      - name: lint
        if: steps.check.outputs.changed == 'true'
        run: npm run lint
      
      - name: build
        if: steps.check.outputs.changed == 'true'
        run: npm run build:js
      
      - name: docs
        if: steps.check.outputs.changed == 'true'
        run: npm run docs
      
      - name: browser tests
        if: steps.check.outputs.changed == 'true'
        run: npm run test:browser-headless
      
      - name: node tests and coverage
        if: steps.check.outputs.changed == 'true'
        run: npm run coverage
      
      - name: send report to coveralls.io
        if: steps.check.outputs.changed == 'true'
        uses: coverallsapp/github-action@master
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: publish to NPM
        if: steps.check.outputs.changed == 'true'
        run: npm publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}