// 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.

def success = true

pipeline {
    agent {
      node {
        label 'windows'
        // use custom workspace folder to shorten paths
        customWorkspace "C:\\ws\\prod"
      }
    }
    parameters {
        string(name: 'DIFF_ID')
        string(name: 'PHID')
        string(name: 'REV_ID')
    }
    environment {
        CONDUIT_TOKEN = credentials('phabricator-conduit-token')
        PHABRICATOR_HOST = 'https://reviews.llvm.org'
        PHAB_LOG = "${WORKSPACE}/build/.phabricator-comment"
        MY_BUILD_ID = "${JOB_BASE_NAME}-${BUILD_NUMBER}"
        RESULT_URL = "https://storage.googleapis.com/llvm-premerge-checks/results/${MY_BUILD_ID}"
        SCRIPT_DIR = "${WORKSPACE}/llvm-premerge-checks/scripts"
        // store all build results here, will be uploaded to GCS later
        RESULT_DIR = "${WORKSPACE}\\results"
        LLVM_DIR = "${WORKSPACE}\\llvm-project"
        // enable sccache for this build. Comment out the line to disable it
        SCCACHE_DIR = "C:\\ws\\sccache"
    }
    options {
        timeout(time:2, unit:'HOURS')
    }
    stages {
        stage("build info"){
            steps {
                echo "Building diff ${DIFF_ID} with PHID ${PHID} for Revision ${REV_ID}"
                script {
                    currentBuild.displayName += " D${REV_ID}"
                    currentBuild.description = "<a href='https://reviews.llvm.org/D${REV_ID}'>D${REV_ID}</a>"
                }
                script {
                    success = true
                    failure_message = ""
                }
            }
        }
        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-premerge-tests/llvm-project.git', branch: "phab-diff-${DIFF_ID}"
                    powershell 'git clean -fdx'
                    powershell 'git show -s'
                }
                // create ${RESULT_DIR}
                powershell """
                    Remove-Item ${RESULT_DIR} -Recurse -ErrorAction Ignore
                    New-Item -ItemType Directory -Force -Path ${RESULT_DIR} | Out-Null
                    """
            }            
        }
        stage('CMake') {
            steps {
                dir("${LLVM_DIR}"){
                    powershell "python ${SCRIPT_DIR}/run_cmake.py detect"
                }
            }
            post {
                failure {
                    script {
                        success = false
                        failure_message = "Failed to run CMake"
                    }
                }
            }
        }
        stage('ninja all') {
            steps {
                dir("${LLVM_DIR}"){
                    powershell "python ${SCRIPT_DIR}/run_ninja.py all"
                }
            }
            post {
                failure {
                    script {
                        success = false
                        failure_message = "Failed to run ninja all"
                    }
                }
            }
        }
        stage('ninja check-all') {
            steps {
                dir("${LLVM_DIR}"){
                    powershell "python ${SCRIPT_DIR}/run_ninja.py check-all"
                }
            }
            post {
                failure {
                    script {
                        success = false
                        failure_message = "Failed to run ninja check-all"
                    }
                }
            }
        }
    }
    post { 
        always { 
            script {
                if (success) {
                    currentBuild.result = "SUCCESS"
                } else {
                    currentBuild.result = "FAILURE"
                }
            }
            echo "Uploading logs to ${RESULT_URL} ..."
            dir("${RESULT_DIR}") {
                // gather all result files in a folder
                powershell """
                    \$ErrorActionPreference = 'Continue'
                    Write-Host "Getting the console log..."
                    Invoke-WebRequest -OutFile console-log.txt -uri "http://jenkins.local:8080/job/${JOB_BASE_NAME}/${BUILD_NUMBER}/consoleText" -ErrorAction "Continue"
                    
                    Write-Host "Copying build artefacts..."
                    Copy-Item "${LLVM_DIR}\\choose_projects.log"
                    Copy-Item "${LLVM_DIR}\\build\\CMakeCache.txt"
                    Copy-Item "${LLVM_DIR}\\build\\test-results.xml"
                """                               
            }
            /// send results to Phabricator
            echo "Sending build feedback to Phabricator..."
            bat """
                python ${SCRIPT_DIR}/phabtalk/phabtalk.py "${PHID}" "${DIFF_ID}" ^
                    --workspace "${LLVM_DIR}" ^
                    --conduit-token "${CONDUIT_TOKEN}" ^
                    --test-result-file "test-results.xml" ^
                    --host "${PHABRICATOR_HOST}/api/" ^
                    --results-dir "${RESULT_DIR}" ^
                    --results-url "${RESULT_URL}" ^
                    --failures "${failure_message}" ^
                    --buildresult ${currentBuild.result} ^
                    --name "windows"
                """            
            dir("${RESULT_DIR}") {
                // upload results to
                // Google Cloud Storage
                powershell """
                    Write-Host "Uploading results to GCS..."
                    \$ErrorActionPreference = 'Continue'
                    gsutil cp *.* gs://llvm-premerge-checks/results/${MY_BUILD_ID}/
                    Write-Host "Done."
                """
            }
            echo "Done."
        } 
    }
}