ci-build.yml

name: CI

on:
  push:
    branches:
      - 'main'
    paths-ignore:
      - '.github/**/*.md'
  pull_request:
    branches:
      - 'main'
    paths-ignore:
      - '.github/**/*.md'
  workflow_dispatch:

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        java: [ '21' ]
        os: [ 'ubuntu-24.04' ]
        include:
          - primary: false
          - java: '21'
            primary: true
    name: Build (Java ${{ matrix.java }}, ${{ matrix.os }})
    runs-on: ${{ matrix.os }}
    # typical duration is ~70min, set twice the amount as limit (default is 6h)
    timeout-minutes: 140
    steps:
      - name: Checkout
        uses: actions/checkout@v7
        with:
          fetch-depth: ${{ github.event_name == 'pull_request' && 2 || 1 }}

      - name: Set up Cache
        uses: actions/cache@v6
        with:
          path: |
            ~/.m2/repository
            !~/.m2/repository/org/openhab
          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
          restore-keys: |
            ${{ runner.os }}-maven-

      - name: Set up Java ${{ matrix.java }}
        uses: actions/setup-java@v5
        with:
          distribution: 'temurin'
          java-version: ${{ matrix.java }}

      - name: Register Problem Matchers
        if: ${{ matrix.primary }}
        run: |
          echo "::add-matcher::.github/openhab-compile-problems.json"

      - name: Get Changed Files
        if: github.head_ref != ''
        shell: bash
        run: |
          CHANGED_FILES_FILE="$RUNNER_TEMP/changed-files.txt"
          echo "CHANGED_FILES_FILE=$CHANGED_FILES_FILE" >> "$GITHUB_ENV"
          git diff --name-only --no-renames HEAD^1 HEAD > "$CHANGED_FILES_FILE"
          count=$(wc -l < "$CHANGED_FILES_FILE")
          echo "Found $count changed files."
          echo "::group::Changed files"
          if [[ -s "$CHANGED_FILES_FILE" ]]; then
            cat "$CHANGED_FILES_FILE"
          else
            echo "No changed files found."
          fi
          echo "::endgroup::"

      - name: Build
        id: build
        run: bash './.github/scripts/maven-build'
        env:
          MAVEN_OPTS: >-
            -Xmx8g
            -Dmaven.wagon.http.retryHandler.count=5
            -Dmaven.wagon.httpconnectionManager.ttlSeconds=25
            -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn

      - name: Prepare Uploads
        id: prepare-uploads
        if: ${{ !cancelled() && (steps.build.outcome == 'success' || steps.build.outcome == 'failure') }}
        shell: bash
        run: |
          uploads="$RUNNER_TEMP/uploads"
          mkdir -p "${uploads}"

          if [[ -f build.log ]]; then
            cp build.log "${uploads}/build-log-java-${{ matrix.java }}-${{ matrix.os }}.txt"
            echo "build-log=true" >> "$GITHUB_OUTPUT"
          fi

          if [[ -f target/summary_report.html ]]; then
            cp target/summary_report.html "${uploads}/sat-summary-report.html"
            echo "sat-report=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Upload Build Log
        if: ${{ !cancelled() && steps.prepare-uploads.outputs.build-log == 'true' }}
        uses: actions/upload-artifact@v7
        with:
          path: ${{ runner.temp }}/uploads/build-log-java-${{ matrix.java }}-${{ matrix.os }}.txt
          archive: false
          if-no-files-found: error

      - name: Upload SAT Summary Report
        if: ${{ !cancelled() && matrix.primary && steps.prepare-uploads.outputs.sat-report == 'true' }}
        uses: actions/upload-artifact@v7
        with:
          path: ${{ runner.temp }}/uploads/sat-summary-report.html
          archive: false
          if-no-files-found: error

      - name: Report SAT Errors as Annotations
        if: ${{ !cancelled() && matrix.primary && ((steps.build.outcome == 'success') || (steps.build.outcome == 'failure')) }}
        uses: ghys/checkstyle-github-action@main
        with:
          title: CheckStyle Violations
          path: '**/checkstyle-result.xml'
          mode: inline

      # this will identify modifications to files under source control during the workflow run;
      # untracked files will be included as well!
      - name: Verify Changed Files
        id: verify-changed-files
        if: ${{ !cancelled() }}
        run: |
          set -o pipefail
          changed_files=$(echo -n "$(git diff --name-only HEAD && git ls-files --others --exclude-standard)" | tr '\n' ' ')
          echo "changed_files=$changed_files" >> $GITHUB_OUTPUT

      - name: Fail on Changed Files
        if: ${{ !cancelled() && steps.verify-changed-files.outputs.changed_files != '' }}
        env:
          CHANGED_FILES: ${{ steps.verify-changed-files.outputs.changed_files }}
        run: |
          echo "::error::Files have changed: $CHANGED_FILES"
          exit 1