#  Copyright 2021 Collate
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#  http://www.apache.org/licenses/LICENSE-2.0
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

name: Java Checkstyle

on:
  # Trigger analysis when pushing in master or pull requests, and when creating
  # a pull request.
  push:
    branches:
      - main
      - "0.[0-9]+.[0-9]+"
  pull_request_target:
    types: [opened, synchronize, reopened, labeled]

permissions:
  contents: read

concurrency: 
  group: java-checkstyle-${{ github.head_ref }}
  cancel-in-progress: true
jobs:
  java-checkstyle:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write

    steps:
      - name: Free Disk Space (Ubuntu)
        uses: jlumbroso/free-disk-space@main
        with:
            tool-cache: false
            android: true
            dotnet: true
            haskell: true
            large-packages: false
            swap-storage: true
            docker-images: false
      - name: Wait for the labeler
        uses: lewagon/wait-on-check-action@v1.3.4  
        if: ${{ github.event_name == 'pull_request_target' }}
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          check-name: Team Label
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          wait-interval: 90

      - name: Verify PR labels
        uses: jesusvasquez333/verify-pr-label-action@v1.4.0
        if: ${{ github.event_name == 'pull_request_target' }}
        with:
          github-token: '${{ secrets.GITHUB_TOKEN }}'
          valid-labels: 'safe to test'
          pull-request-number: '${{ github.event.pull_request.number }}'
          disable-reviews: true  # To not auto approve changes

      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Set up JDK 21
        uses: actions/setup-java@v4
        with:
          java-version: '21'
          distribution: 'temurin'

      - name: Run checkstyle
        run: mvn spotless:apply

      - name: Save checkstyle outcome
        id: git
        continue-on-error: true
        run: |
          git diff-files --quiet

      - name: Create a comment in the PR with the instructions
        if: steps.git.outcome != 'success'
        uses: peter-evans/create-or-update-comment@v1
        with:
          issue-number: ${{ github.event.pull_request.number }}
          body: |
            **The Java checkstyle failed.**

            Please run `mvn spotless:apply` in the root of your repository and commit the changes to this PR.
            You can also use [pre-commit](https://pre-commit.com/) to automate the Java code formatting.

            You can install the pre-commit hooks with `make install_test precommit_install`.

      - name: Java checkstyle failed, check the comment in the PR
        if: steps.git.outcome != 'success'
        run: |
          exit 1