name: CI

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

jobs:
  main:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2

      - uses: actions/setup-node@v2
        with:
          # Choose your Node.js version here:
          node-version: 15.x

      # Re-use node_modules between runs until package.json or 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.json', '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('example/elm.json', 'example/elm-tooling.json', 'example/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.
      # `npm ci` does two things:
      # 1. Installs everything in package-lock.json.
      # 2. Checks that package.json and package-lock.json are in sync.
      # That’s why the cache depends on both package-lock.json and package.json.
      - 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
      
      # Install tools from elm-tooling.json, unless we restored them from
      # cache. package-lock.json and elm-tooling.json can change independently,
      # so we need to install separately based on what was restored from cache.
      # This is run even if we restored ~/.elm from cache to be 100% sure
      # node_modules/.bin/ contains links to all your tools. `elm-tooling
      # install` runs very fast when there’s nothing new to download so
      # skipping the step doesn’t save much time.
      - name: elm-tooling install
        run: npx --no-install elm-tooling install
      
      # Finally, run whatever you want.

      - name: elm-verify-examples
        run: npx elm-verify-examples
        
      - name: elm-test
        run: npx --no-install elm-test-rs