// Copyright 2019 Google LLC
//
// Licensed under the the Apache License v2.0 with LLVM Exceptions (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://llvm.org/LICENSE.txt
//
// 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.

pipeline {
    agent none

    triggers {
        pollSCM 'H/5 * * * *'
    }
    stages {
        stage("build and test on Windows and Linux"){
            parallel {
                stage("Linux"){
                    agent { label "linux"}
                    environment {
                        MY_BUILD_ID = "${JOB_BASE_NAME}-${BUILD_NUMBER}"
                        TARGET_DIR="/mnt/nfs/results/${MY_BUILD_ID}"
                        SCRIPT_DIR = "${WORKSPACE}/llvm-premerge-checks/scripts"
                        RESULT_DIR = "${WORKSPACE}/results"
                        LLVM_DIR = "${WORKSPACE}/llvm-project"        
                    }
                    stages {
                        stage("git checkout"){
                            steps {
                                git url: 'https://github.com/llvm/llvm-project.git', branch: 'release/10.x'
                                sh 'git clean -fdx'
                                dir("llvm-premerge-checks")
                                {
                                    git url: 'https://github.com/google/llvm-premerge-checks.git'
                                }
                                sh 'rm -rf build || true'
                                sh 'mkdir -p build'
                                sh 'mkdir -p "${TARGET_DIR}"'
                            }
                        }
                        stage('CMake') {
                            steps {
                                sh "${SCRIPT_DIR}/run_cmake.sh"
                            }
                        }
                        stage('ninja all') {
                            steps {
                                sh "${SCRIPT_DIR}/run_ninja.sh all"
                            }
                        }
                        stage('ninja check-all') {
                            steps {
                                sh "${SCRIPT_DIR}/run_ninja.sh check-all"
                            }
                        }
                    }
                    post { 
                        always { 
                            echo "Console log is available at https://results.new.llvm-merge-guard.org/${MY_BUILD_ID}"
                            dir("${env.TARGET_DIR}") {
                                // copy console log to result folder
                                sh "wget -qO console-log.txt http://jenkins-ui.jenkins.svc.cluster.local:8080/job/${JOB_BASE_NAME}/${BUILD_NUMBER}/consoleText"
                                // TODO: move all file copy operations here
                                // junit 'build/*.xml'
                            }
                        }
                    }            
                }
                stage("Windows"){
                    agent { label "windows"}
                    environment {
                        MY_BUILD_ID = "${JOB_BASE_NAME}-${BUILD_NUMBER}"
                        TARGET_DIR="/mnt/nfs/results/${MY_BUILD_ID}"
                        SCRIPT_DIR = "${WORKSPACE}/llvm-premerge-checks/scripts"
                        RESULT_DIR = "${WORKSPACE}\\results"
                        LLVM_DIR = "${WORKSPACE}\\llvm-project"        
                    }
                    stages {
                        stage("git checkout"){
                            steps {
                                echo "getting llvm-premerge-checks... "
                                dir("llvm-premerge-checks")
                                {
                                    git url: 'https://github.com/google/llvm-premerge-checks.git' 
                                }
                                echo "getting llvm-project... "
                                dir("llvm-project")
                                {
                                    git url: 'https://github.com/llvm/llvm-project.git', branch: 'release/10.x'
                                }
                                powershell "New-Item -ItemType Directory -Force -Path ${RESULT_DIR}"
                            }            
                        }
                        stage('CMake') {
                            steps {
                                dir("${LLVM_DIR}"){
                                    powershell "${SCRIPT_DIR}/run_cmake.ps1"
                                }
                            }
                        }
                        stage('ninja all') {
                            steps {
                                dir("${LLVM_DIR}"){
                                    powershell "${SCRIPT_DIR}/run_ninja.ps1 all"
                                }
                            }
                        }
                        stage('ninja check-all') {
                            steps {
                                dir("${LLVM_DIR}"){
                                    powershell "${SCRIPT_DIR}/run_ninja.ps1 check-all"
                                }
                            }
                        }
                    }
                    post { 
                        always { 
                            echo "Logs uploaded to https://pantheon.corp.google.com/storage/browser/llvm-premerge-checks/results/${MY_BUILD_ID}."
                            dir("${env.RESULT_DIR}") {
                                // gather all result files in a folder, then upload everything to
                                // Google Cloud Storage
                                powershell """
                                    # get the console log
                                    Invoke-WebRequest -OutFile console-log.txt -uri "http://jenkins.local:8080/job/${JOB_BASE_NAME}/${BUILD_NUMBER}/consoleText" -ErrorAction "Continue"

                                    Copy-Item "${LLVM_DIR}\\build\\CMakeCache.txt"
                                    Copy-Item "${LLVM_DIR}\\build\\test-results.xml"
                                    
                                    # upload files
                                    \$ErrorActionPreference = 'SilentlyContinue'
                                    gsutil cp -Z *.* gs://llvm-premerge-checks/results/${MY_BUILD_ID}/
                                """
                            }
                            // doesn't find junit results, not sure why...
                            // junit "${LLVM_DIR}\\build\\test-results.xml"
                        }
                    } 

                }
            }
        }

    }
}