pipeline {
  agent {
    docker {
      // Unified build image, built from ci/Dockerfile.ci:
      //   docker build -f ci/Dockerfile.ci -t legatus-build:26.04 ci
      // Push it to the registry the Jenkins agents pull from before enabling this.
      image 'legatus-build:26.04'
      reuseNode true
      // RTI Connext is not part of the image and has to be mounted read-only.
      args '-u root:root -v /opt/rti_connext_dds-7.7.0:/opt/rti_connext_dds-7.7.0:ro'
    }
  }

  options {
    timestamps()
    disableConcurrentBuilds()
  }

  environment {
    PROJECT_DIR = "qt6-after/qt6-migrated-legatus"
    BUILD_DIR = "qt6-after/qt6-migrated-legatus/build-ci"
    CHANGE_TARGET = "${env.CHANGE_TARGET ?: 'origin/main'}"
    QT_QPA_PLATFORM = "offscreen"
    LANG = "C.UTF-8"
    LC_ALL = "C.UTF-8"
    // Targets known to build and test green today. A full `cmake --build` still
    // fails outside TetraIF: Z/src/nglwidgets has an unfinished Poppler port, and
    // several targets compile the RTI headers without -DRTI_UNIX. Widen this list
    // as those modules get migrated.
    BUILD_TARGETS = "CoPrtCnv PrtCnvLib PrtCnv LogView_console CoPrtCnvTests PrtCnvTests LogViewTests"
    TEST_REGEX = "CoPrtCnvRadioTelegramTest|PrtCnvMemberTest|PrtCnvStoredTelegramTest|LogViewFieldTest|LogViewTetraTelegramsParserTest"
  }

  stages {
    stage('Checkout') {
      steps {
        checkout scm
        sh 'git fetch --all --prune'
        sh 'git submodule update --init --recursive || true'
      }
    }

    stage('Tool Versions') {
      steps {
        sh '''
          python3 --version
          cmake --version
          ninja --version
          g++ --version
        '''
      }
    }

    stage('Qt Diagnostics') {
      steps {
        sh '''
          echo "QT_QPA_PLATFORM=$QT_QPA_PLATFORM"
          echo "LANG=$LANG"
          echo "LC_ALL=$LC_ALL"
          dpkg -l | grep -E "qt6-base-dev|qt6-tools|qt6-websockets-dev" || true
          ls /opt/rti_connext_dds-7.7.0 >/dev/null && echo "RTI Connext mounted" || echo "RTI Connext MISSING"
        '''
      }
    }

    stage('Policy Checks') {
      steps {
        sh 'python3 ci/check_pr_policies.py'
      }
    }

    stage('Configure') {
      steps {
        // The project pins CMAKE_CXX_STANDARD to 17; do not override it here.
        sh '''
          cmake -S ${PROJECT_DIR} -B ${BUILD_DIR} \
            -DCMAKE_BUILD_TYPE=Debug \
            -DBUILD_RTI=ON \
            -DBUILD_ARCGIS=OFF
        '''
      }
    }

    stage('Build') {
      steps {
        sh 'cmake --build ${BUILD_DIR} --parallel --target ${BUILD_TARGETS}'
      }
    }

    stage('Test') {
      steps {
        sh 'ctest --test-dir ${BUILD_DIR} -R "${TEST_REGEX}" --output-on-failure'
      }
    }
  }

  post {
    always {
      script {
        if (getContext(hudson.FilePath)) {
          cleanWs deleteDirs: true, disableDeferredWipeout: true
        }
      }
    }
  }
}