name: Node CI

on:
  pull_request:
    types: [opened, reopened, synchronize]

concurrency:
  # Note that the `teardown-pr-preview` workflow needs the same group name
  # to cancel the running `ci` workflows
  group: ${{ github.workflow }}-${{ github.event.number }}
  cancel-in-progress: true

jobs:
  lint:
    runs-on: ubuntu-latest

    strategy:
      matrix:
        node-version: [20.x]

    steps:
      - name: Fetch commit count
        env:
          PR_COMMIT_COUNT: ${{ github.event.pull_request.commits }}
        run: |
          echo "FETCH_DEPTH=$(($PR_COMMIT_COUNT + 1))" >> $GITHUB_ENV

      - uses: actions/checkout@v6
        with:
          fetch-depth: ${{ env.FETCH_DEPTH }}

      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v6
        with:
          node-version: ${{ matrix.node-version }}

      - name: Cache node modules
        id: cache-dep
        uses: actions/cache@v5
        with:
          path: node_modules
          key: ${{ runner.os }}-node-modules-${{ hashFiles('**/package-lock.json') }}

      - name: Install dependencies
        if: steps.cache-dep.outputs.cache-hit != 'true'
        run: npm ci

      - name: Collect changed files
        run: |
          mkdir ~/tmp/
          git diff ${{ github.event.pull_request.base.sha }} ${{ github.sha }} --diff-filter=ACM --name-only --relative '*src/*.ts' '*src/**/*.ts' > ~/tmp/changed_files
          echo -e "Changed files: \n$(cat ~/tmp/changed_files)"

      - name: Lint
        run: npx eslint $(cat ~/tmp/changed_files)

      - name: Check types
        run: npm run checktype

  build:
    runs-on: ubuntu-latest

    strategy:
      matrix:
        node-version: [20.x]

    steps:
      - uses: actions/checkout@v6

      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v6
        with:
          node-version: ${{ matrix.node-version }}

      - name: Cache node modules
        id: cache-dep
        uses: actions/cache@v5
        with:
          path: node_modules
          key: ${{ runner.os }}-node-modules-${{ hashFiles('**/package-lock.json') }}

      - name: Install dependencies
        if: steps.cache-dep.outputs.cache-hit != 'true'
        run: npm ci

      - name: Unit Test
        run: npm run test

      - name: Build release
        run: npm run release

      - name: Test generated DTS
        run: npm run test:dts