name: Elm CI

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

jobs:
  main:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Use Node.js 15
        uses: actions/setup-node@v1
        with:
          node-version: 15
      # Re-use node_modules between runs until package-lock.json changes.
      - name: Cache node_modules
        id: cache-node_modules
        uses: actions/cache@v2
        with:
          path: node_modules
          key: node_modules-${{ hashFiles('package-lock.json') }}

      # Re-use ~/.elm between runs until elm.json, elm-tooling.json or
      # review/elm.json changes. The Elm compiler saves downloaded Elm packages
      # to ~/.elm, and elm-tooling saves downloaded tool executables there.
      - name: Cache ~/.elm
        uses: actions/cache@v2
        with:
          path: ~/.elm
          key: elm-${{ hashFiles('elm.json', 'elm-tooling.json', 'generator/elm.json', 'review/elm.json') }}

      # Install npm packages, unless we restored them from cache.
      # Since `npm ci` removes the node_modules folder before running it’s
      # important to skip this step if cache was restored.
      - name: npm ci
        if: steps.cache-node_modules.outputs.cache-hit != 'true'
        env:
          # If you have a `"postinstall": "elm-tooling install"` script in your
          # package.json, this turns it into a no-op. We’ll run it in the next
          # step because of the caching. If elm-tooling.json changes but
          # package-lock.json does not, the postinstall script needs running
          # but this step won’t.
          NO_ELM_TOOLING_INSTALL: 1
        run: npm ci
      - name: elm-tooling install
        run: npx --no-install elm-tooling install
      - name: Tests
        run: npm test
      - name: Add elm-review, elm and elm-format to path
        run: npm bin >> $GITHUB_PATH
      - uses: sparksp/elm-review-action@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      - name: elm-format
        run: npx --no-install elm-format --validate src/ generator/src
      - name: Build elm docs
        id: docs
        run: npx --no-install elm make --docs docs.json
      - name: Setup for cypress
        run: (cd examples/docs && npm install && npx elm-tooling install)
      - name: Cypress tests
        uses: cypress-io/github-action@v2
        with:
          start: npm start
          wait-on: "http://localhost:1234"
          wait-on-timeout: 60
      - uses: actions/upload-artifact@v1
        if: failure()
        with:
          name: cypress-screenshots
          path: cypress/screenshots
      - uses: actions/upload-artifact@v1
        if: failure()
        with:
          name: cypress-videos
          path: cypress/videos
      - run: npx elm-tooling install
      - name: Elm Publish
        uses: dillonkearns/elm-publish-action@v1
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          path-to-elm: ./node_modules/.bin/elm
      - id: npm-publish
        if: github.ref == 'refs/heads/master'
        uses: JS-DevTools/npm-publish@v1
        with:
          token: ${{ secrets.NPM_TOKEN }}