#!groovy

def main(String cacheHome = 'output/cache') {
    String gitUrl = "${env.GERRIT_SCHEME}://${env.GERRIT_HOST}:${env.GERRIT_PORT}/${env.GERRIT_PROJECT}"
    String gitRef = env.GERRIT_BRANCH ?: env.GERRIT_REFNAME
    String artInfraNamespace = 'binary-dev-local/infra'
    String artCacheFile = "${env.CI_NAME}.jjb.zip"
    String artCacheUrl = "${env.ARTIFACTORY_URL}/artifactory/${artInfraNamespace}/${artCacheFile}"
    String artCredential = env.ART_CREDENTIALS_ID
    String jenkinsCredential = env.JENKINS_CREDENTIALS_ID
    def response

    def jenkinsJobs
    def jjbJobs
    def jobsToRemove

    currentBuild.description = ''

    // Set current build description
    if (env.GERRIT_CHANGE_URL) {
        currentBuild.description = """
        <p>
          Triggered by change: <a href="${env.GERRIT_CHANGE_URL}">${env.GERRIT_CHANGE_NUMBER},${env.GERRIT_PATCHSET_NUMBER}</a><br/>
          Project: <b>${env.GERRIT_PROJECT}</b><br/>
          Branch: <b>${env.GERRIT_BRANCH}</b><br/>
          Subject: <b>${env.GERRIT_CHANGE_SUBJECT}</b><br/>
        </p>
        """
    }

    stage('SCM checkout') {
        if (env.MAINTAIN_MODE.toLowerCase() == 'false') {
            checkout([
                $class: 'GitSCM',
                branches: [[
                    name: 'FETCH_HEAD'
                ]],
                userRemoteConfigs: [[
                    url: gitUrl,
                    refspec: gitRef,
                    credentialsId: env.GIT_CREDENTIALS_ID
                ]],
                extensions: [[
                    $class: 'WipeWorkspace'
                ]],
            ])
        }
    }

    /*stage('Get JJB cache') {
        dir(cacheHome) {
            response = httpRequest \
                url: artCacheUrl,
                authentication: artCredential,
                httpMode: 'GET',
                outputFile: artCacheFile,
                validResponseCodes: '100:399,404'
            if (response.status != 404) {
               unzip \
                   zipFile: artCacheFile,
                   dir: '.cache'
            }
        }
    }*/

    stage('Update JJB jobs') {
        if (env.MAINTAIN_MODE.toLowerCase() == 'false') {
            withCredentials([
                usernamePassword(
                    credentialsId: env.JENKINS_CREDENTIALS_ID,
                    usernameVariable: 'JJB_USER',
                    passwordVariable: 'JJB_PASSWORD')
                ]) {
                    withEnv([
                        "HOME=${cacheHome}"
                    ]) {
                        sh 'tox -v -e update $JOBS_LIST'
                }
            }
        } else {
            input \
                message: 'Sleeping for maintainance'
        }
    }

    stage('Get deployed jobs list') {
        response = httpRequest \
            url: "${JENKINS_URL}/crumbIssuer/api/json",
            authentication: jenkinsCredential
        def crumb = readJSON text: response.getContent()

        response = httpRequest \
            url: "${JENKINS_URL}/api/json?tree=jobs[name,description]",
            authentication: jenkinsCredential,
            customHeaders: [[
                name: crumb.crumbRequestField,
                value: crumb.crumb,
                maskValue: true
            ]]
        def jobs = readJSON text: response.getContent()

        jenkinsJobs = jobs.jobs.findAll {
                // Filter jenkins jobs deployed by JJB
                it.description.toString().contains('Managed by Jenkins Job Builder')
            }.collect{ it.name }
    }

    stage('Get JJB jobs list') {
        withEnv([
            "HOME=${cacheHome}"
        ]) {
            sh 'tox -v -e jobs'
        }
        dir("output/${env.CI_NAME}") {
            jjbJobs = sh(
                script: "grep -rl actions | sed 's|/config.xml\$||g'",
                returnStdout: true
            ).trim().readLines()
        }

        if (jjbJobs.size() == 0) {
            error 'ERROR: Unexpected JJB output. No generated jobs found'
        }
    }

    stage('Remove undefined jobs') {
        jobsToRemove = jenkinsJobs.findAll { ! jjbJobs.contains(it) }

        if (jobsToRemove.size() > 0) {
            withCredentials([
                usernamePassword(
                    credentialsId: jenkinsCredential,
                    usernameVariable: 'JJB_USER',
                    passwordVariable: 'JJB_PASSWORD')
            ]) {
                withEnv([
                    "HOME=${cacheHome}"
                ]) {
                    sh "tox -v -e delete ${jobsToRemove.join(' ')}"
                }
            }

            String description = '<b>DELETED</b><ul>'
            jobsToRemove.each { description += "<li>${it}</li>" }
            description += '</ul>'
            currentBuild.description += description
        } else {
            currentBuild.description += 'No jobs to remove'
        }
    }

    /*stage('Save JJB cache') {
        dir(cacheHome) {
            sh "rm -f ${artCacheFile}"
            zip \
                zipFile: artCacheFile,
                dir: '.cache',
                glob: 'jenkins_jobs/**'
            response = httpRequest \
                url: artCacheUrl,
                authentication: artCredential,
                httpMode: 'PUT',
                multipartName: 'file',
                uploadFile: artCacheFile
        }
    }*/
}

String podTpl = """
    apiVersion: "v1"
    kind: "Pod"
    spec:
      securityContext:
          runAsUser: 1000
      containers:
      - name: "tox"
        image: "${env.DOCKER_IMAGE}"
        command:
        - "cat"
        securityContext:
          privileged: false
        tty: true
"""

if (env.K8S_CLUSTER == 'unset') {
    node(env.SLAVE_LABEL ?: 'docker') {
        main(env.WORKSPACE)
    }
} else {
    podTemplate(
            cloud: env.K8S_CLUSTER,
            yaml: podTpl,
            showRawYaml: false
    ) {
        node(POD_LABEL) {
            container('tox') {
                main()
            }
        }
    }
}