// Copyright (C) 2021-2023 Savoir-faire Linux Inc.
//
// Author: Maxim Cournoyer <maxim.cournoyer@savoirfairelinux.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
// Packaging validation for supported GNU/Linux systems.
//
// Note: To work on this script without having to push a commit each
// time, use the jenkins-cli command (see:
// https://wiki.savoirfairelinux.com/wiki/Jenkins.jami.net#Usage_CLI_de_Jenkins).
//
// Requirements:
// 1. gerrit-trigger plugin
// 2. ws-cleanup plugin
// 3. ansicolor plugin

// TODO:
// - GPG-sign release tarballs.
// - GPG-sign release commits.
// - Allow publishing from any node, to avoid relying on a single machine.

// Configuration globals.
def SUBMODULES = ['daemon',
                  '3rdparty/SortFilterProxyModel',
                  '3rdparty/md4c',
                  '3rdparty/tidy-html5']
def TARGETS = [:]
def REMOTE_HOST = env.SSH_HOST_DL_RING_CX
def REMOTE_BASE_DIR = '/srv/repository/ring'
def JAMI_PUBLIC_KEY_FINGERPRINT = 'A295D773307D25A33AE72F2F64CD5FA175348F84'
def GIT_USER_EMAIL = 'jenkins@jami.net'
def GIT_USER_NAME = 'jenkins'
def GIT_PUSH_URL = 'ssh://jenkins@review.jami.net:29420/jami-client-qt'
def JENKINS_SSH_KEY = '35cefd32-dd99-41b0-8312-0b386df306ff'
def DL_SSH_KEY = '5825b39b-dfc6-435f-918e-12acc1f56221'
def SNAPCRAFT_KEY = '106e398c-43ca-41c0-8f7e-4f45030f8bdd'
def PACKAGING_DIR = 'extras/packaging/gnu-linux'

pipeline {
    agent {
        label 'guix'
    }

    options {
        ansiColor('xterm')
    }

    parameters {
        string(name: 'GERRIT_REFSPEC',
               defaultValue: 'refs/heads/master',
               description: 'The Gerrit refspec to fetch.')
        booleanParam(name: 'DEPLOY',
                     defaultValue: false,
                     description: 'Whether to deploy packages.')
        booleanParam(name: 'PUBLISH',
                     defaultValue: false,
                     description: 'Whether to upload tarball and push to git.')
        choice(name: 'CHANNEL',
               choices: 'internal\nnightly\nstable',
               description: 'The repository channel to deploy to. ' +
               'Defaults to "internal".')
        booleanParam(name: 'BUILD_ARM',
                     defaultValue: false,
                     description: 'Whether to build ARM packages.')
        string(name: 'PACKAGING_TARGETS',
               defaultValue: '',
               description: 'A whitespace-separated list of packaging ' +
               'targets, e.g. "debian_10 deb-pack-x86-64 rpm-pack-x86-64 snap". ' +
               'When left unspecified, all the packaging targets are built. ' +
               'To see the available targets, run: ' +
               'make -f extras/packaging/gnu-linux/Makefile list-package-targets')
    }

    environment {
        TARBALLS = '/var/cache/jami' // set the cache directory
    }

    stages {
        stage('Check configuration') {
            steps {
                script {
                    if (!fileExists(TARBALLS)) {
                        error "The ${TARBALLS} directory does not exist. \
See https://wiki.savoirfairelinux.com/wiki/Jenkins.jami.net#Configuration"
                    }

                    mountType = sh(script: "findmnt ${TARBALLS} -o fstype -n",
                                   returnStdout: true)
                    if (!(mountType =~ /^nfs/)) {
                        error "The ${TARBALLS} directory is not mounted on NFS storage. \
See https://wiki.savoirfairelinux.com/wiki/Jenkins.jami.net#Configuration_client_NFS"
                    }
                }
            }
        }

        stage('Configure Git') {
            steps {
                sh """git config user.name ${GIT_USER_NAME}
                      git config user.email ${GIT_USER_EMAIL}
                   """
            }
        }

        stage('Fetch submodules') {
            steps {
                echo 'Initializing submodules ' + SUBMODULES.join(', ')
                sh 'git submodule update --init --recursive'
            }
        }

        stage('Generate release tarball') {
            steps {
                sh """\
#!/usr/bin/env -S bash -l
make -f ${PACKAGING_DIR}/Makefile portable-release-tarball .tarball-version
"""
                stash(includes: '*.tar.gz, .tarball-version',
                      name: 'release-tarball')
            }
        }

        stage('Publish release artifacts') {
            when {
                expression {
                    params.PUBLISH && params.CHANNEL != 'internal'
                }
            }

            steps {
                sshagent(credentials: [JENKINS_SSH_KEY, DL_SSH_KEY]) {
                    echo "Publishing to git repository..."
                    script {
                        def wantedTag = "${params.CHANNEL}/" + sh (
                            script: "${PACKAGING_DIR}/scripts/release-version.sh" +
                                " ${params.CHANNEL}",
                            returnStdout: true
                        ).trim()
                        sh "git tag -am \"Jami new ${params.CHANNEL} version\"" +
                            " ${wantedTag}"
                        sh "git push origin --tags"
                        if (params.CHANNEL == 'stable') {
                            // Only stable releases get a source
                            // tarball.
                            echo "Publishing release tarball..."
                            sh 'rsync --verbose jami*.tar.gz ' +
                                "${REMOTE_HOST}:${REMOTE_BASE_DIR}" +
                                "/release/tarballs/"
                        }
                    }
                }
            }
        }

        stage('Build packages') {
            environment {
                DISABLE_CONTRIB_DOWNLOADS = 'TRUE'
            }
            steps {
                script {
                    def targetsText = params.PACKAGING_TARGETS.trim()
                    if (!targetsText) {
                        targetsText = sh(
                            script: "make -f ${PACKAGING_DIR}/Makefile" +
                                ' -s list-package-targets',
                            returnStdout: true).trim()
                    }

                    TARGETS = targetsText.split(/\s/)
                    if (!params.BUILD_ARM) {
                        TARGETS = TARGETS.findAll { !(it =~ /_(armhf|arm64)$/) }
                    }

                    def stages = [:]

                    TARGETS.each { target ->
                        // Note: The stage calls are wrapped in closures, to
                        // delay their execution.
                        stages[target] =  {
                            stage(target) {
                                // Offload builds to different agents.
                                node('linux-builder') {
                                    cleanWs()
                                    unstash 'release-tarball'
                                    catchError(buildResult: 'FAILURE',
                                               stageResult: 'FAILURE') {
                                        sh """#!/usr/bin/env -S bash -l
                                           echo Building on node \$NODE_NAME
                                           whoami
                                           tar xf *.tar.gz --strip-components=1
                                           make -f ${PACKAGING_DIR}/Makefile ${target}
                                           """
                                        stash(includes: "${PACKAGING_DIR}/packages/**",
                                              name: target)
                                    }
                                }
                            }
                        }
                    }
                    parallel stages
                }
            }
        }
        stage('Sign & deploy packages') {
            agent {
                label 'jami-buildmachine-02.mtl.sfl'
            }

            when {
                expression {
                    params.DEPLOY
                }
            }

            steps {
                sshagent(credentials: [JENKINS_SSH_KEY, DL_SSH_KEY]) {
                    script {
                        TARGETS.each { target ->
                            try {
                                unstash target
                            } catch (err) {
                                echo "Failed to unstash ${target}, skipping..."
                                return
                            }
                        }

                        def distributionsText = sh(
                            script: "find ${PACKAGING_DIR}/packages/* " +
                                '-maxdepth 1 -type d -print0 ' +
                                '| xargs -0 -n1 basename -z',
                            returnStdout: true).trim()
                        def distributions = distributionsText.split("\0")

                        distributions.each { distribution ->
                            echo "Deploying ${distribution} packages..."
                            withCredentials(
                                [string(credentialsId: SNAPCRAFT_KEY,
                                        variable: 'SNAPCRAFT_STORE_CREDENTIALS')]) {
                                sh """${PACKAGING_DIR}/scripts/deploy-packages.sh \
  --distribution=${distribution} \
  --keyid="${JAMI_PUBLIC_KEY_FINGERPRINT}" \
  --remote-repository-location="${REMOTE_HOST}:${REMOTE_BASE_DIR}/${params.CHANNEL}" \
  --remote-manual-download-location="${REMOTE_HOST}:${REMOTE_BASE_DIR}/manual-${params.CHANNEL}"
"""
                            }
                        }
                    }
                }
            }
        }
    }
}
