// Node Label
def nodeLabel = "${UUID.randomUUID().toString()}"

// Kaniko Image
def kanikoImage = "gcr.io/kaniko-project/executor:debug"

// Repository Locations
def pushRepo = "registry.test-chamber-13.lan:5000"
def pushImage = "minecraft"
def pushTag = "latest"

// Container Variables
def baseImage = "alpine"
def baseImageTag = "3.12"
def alpineJavaPackage = "openjdk11"

// PaperMC URL
def paperMCDownload = "https://papermc.io/api/v1/paper/1.16.1/latest/download"

// Minecraft Configuration
def memoryMin = "1g"
def memoryMax = "48g"

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) {
		// Set working directory
		def workspace = pwd()

		stage ("Pre-Build") {
			def dockerFile = """
FROM ${baseImage}:${baseImageTag}

MAINTAINER The_Spider <spider@smoothnet.org>

RUN \\
  apk add --no-cache ${alpineJavaPackage} curl && \\
  addgroup -S -g 1000 minecraft && \\
  adduser -S minecraft -G minecraft -h /minecraft -u 1000

USER minecraft

WORKDIR /minecraft

RUN \
  curl -Ls "${paperMCDownload}" -o /minecraft/paper-mc.jar && \\
  mkdir /minecraft/data && \\
  mkdir /minecraft/html

CMD cd data; java -Xms${memoryMin} -Xmx${memoryMax} -jar ../paper-mc.jar
"""

			writeFile(file: workspace + '/Dockerfile', text: dockerFile)
		}

		stage ("Build & Push") {
			container ("kaniko") {
				sh "/kaniko/executor --cleanup --insecure --skip-tls-verify --context \"${workspace}\" -f \"${workspace}/Dockerfile\" --destination \"${pushRepo}/${pushImage}:${pushTag}\""
			}
		}
	}
}