name: Validate Swift

on:
  push:
    branches:
      - master
    paths:
      - ".github/workflows/validate-swift.yaml"
      - "ios/"
      - "example/ios/"
  pull_request:
    paths:
      - ".github/workflows/validate-swift.yaml"
      - "ios/"
      - "example/ios/"

jobs:
  SwiftLint:
    name: SwiftLint
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: GitHub Action for SwiftLint with --strict
        uses: norio-nomura/action-swiftlint@3.2.1
        with:
          args: --strict
        env:
          # DIFF_BASE: ${{ github.base_ref }}
          WORKING_DIRECTORY: ios
  SwiftFormat:
    name: SwiftFormat
    runs-on: ubuntu-latest
    env:
      working-directory: ./ios
    steps:
      - uses: actions/checkout@v2

      - name: Update PATH
        run: echo ::add-path::$HOME/bin

      - name: Cache packages/Tools/.build
        uses: actions/cache@v1
        with:
          path: packages/Tools/.build
          key: ${{ runner.os }}-swift-tools-build-${{ hashFiles('packages/Tools/Package.resolved') }}
          restore-keys: |
            ${{ runner.os }}-swift-tools-build-
      - name: Cache ~/bin
        uses: actions/cache@v1
        with:
          path: ~/bin
          key: ${{ runner.os }}-home-bin-${{ hashFiles('packages/Tools/Package.resolved') }}
          restore-keys: |
            ${{ runner.os }}-home-bin-
      - name: Install Swift tools
        run: make swift-tools
        working-directory: ${{env.working-directory}}

      - name: Format Swift code
        run: swiftformat --verbose .
        working-directory: ${{env.working-directory}}

      - name: Verify formatted code is unchanged
        run: git diff --exit-code HEAD
        working-directory: ${{env.working-directory}}