def nodeLabel = "${UUID.randomUUID().toString()}"
def repository = "registry.c.test-chamber-13.lan"
def kanikoImage = "${repository}/library/kaniko:latest"
def repositoryCreds = "harbor-repository-creds"

podTemplate(
	name: "pipelineContainer",
	label: nodeLabel,
	yaml: """---
apiVersion: v1
kind: Pod
metadata:
  name: kaniko
spec:
  containers:
  - name: kaniko
    image: ${kanikoImage}
    imagePullPolicy: Always
    tty: true
    command:
    - /busybox/cat
""") {
	node (nodeLabel) {
		stage ("Prepare Kaniko") {
			container ("kaniko") {
				withCredentials([usernameColonPassword(
					credentialsId: repositoryCreds,
					variable: "dCreds",
				)]) {
					def dockerJSON = """{
						"auths": {
							"${repository}": {
								"auth": "${dcreds.bytes.encodeBase64().toString()}"
							}
						}
					}"""
					sh """
						set +x
						echo '${dockerJSON}' > /kaniko/.docker/config.json
					"""
				}
			}
		}

		stage('Build Container') {
			container('kaniko') {
				def connectivity_test = """
#! /usr/bin/env bash
curl --silent --fail --insecure http://localhost:8112 > /dev/null
if [[ "\${?}" != "0" ]]; then
	printf '%s\\n' "Deluge not running."
	exit 100
fi

if [[ -z "\${DDNS_HOST}" ]] || [[ "\${DDNS_HOST}" == "" ]]; then
	printf '%s\\n' "Dynamic DNS host is not set."
	exit 100
fi

DIP=\$(dig -4 @ns1.google.com TXT o-o.myaddr.l.google.com +short | sed -e 's/"//g')
if [[ -z "\${DIP+x}" ]] || [[ "\${DIP}" == "" ]]; then
	printf '%s\\n' "Unable to detect real-world IP."
	exit 100
fi

KIP=\$(dig \${DDNS_HOST} +short)
if [[ -z "\${KIP+x}" ]] || [[ "\${KIP}" == "" ]]; then
	printf '%s\\n' "Unable to get known IP."
	exit 100
fi

if [[ "\${DIP}" == "\${KIP}" ]]; then
	printf '%s\\n' "VPN is not functional."
	exit 100
fi

ping -c 2 google.com > /dev/null
if [[ "\${?}" != "0" ]]; then
	printf '%s\\n' "No internet connectivity."
	exit 100
fi
"""

				def dockerfile = """FROM ${repository}/dockerhub/linuxserver/deluge:amd64-latest
COPY connectivity_test.sh /root

RUN apt-get update && \\
    apt-get upgrade -y && \\
	apt-get install -y openvpn iputils-ping dnsutils && \\
	apt-get clean && \\
	rm -rf /tmp/* /var/lib/apt/lists/* /var/tmp/*
"""

				writeFile file: workspace + '/Dockerfile', text: dockerfile
				writeFile file: workspace + '/connectivity_test.sh', text: connectivity_test
				sh "chmod +x \"${workspace}/connectivity_test.sh\""
				sh "/kaniko/executor --context \"${workspace}\" -f \"${workspace}/Dockerfile\" --destination \"${repository}/library/deluge:latest\""
			}
		}
	}
}