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

// Kaniko Image
def repository = "registry.cluster.test-chamber-13.lan"
def kanikoImage = "${repository}/library/kaniko:latest"
def repositoryCreds = "harbor-repository-creds"

// Container Variables
def baseImage = "${repository}/library/alpine"
def baseImageTag = "latest"
def alpineJavaPackage = "openjdk16"

// PaperMC URL
def paperMCDownload = "https://papermc.io/api/v1/paper/1.16.5/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 ("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 ("Pre-Build") {
			def dockerFile = """
FROM ${baseImage}:${baseImageTag}

MAINTAINER The_Spider <spider@smoothnet.org>

RUN printf '%s\\n' "aHR0cHM6Ly9kbC1jZG4uYWxwaW5lbGludXgub3JnL2FscGluZS9lZGdlL21haW4KaHR0cHM6Ly9k" \\
      "bC1jZG4uYWxwaW5lbGludXgub3JnL2FscGluZS9lZGdlL2NvbW11bml0eQpodHRwczovL2RsLWNk" \\
      "bi5hbHBpbmVsaW51eC5vcmcvYWxwaW5lL2VkZ2UvdGVzdGluZwo=" | base64 -d > /etc/apk/repositories && \\
	apk update && \\
	apk upgrade && \\
    apk add --no-cache ${alpineJavaPackage} curl && \\
	apk cache --purge && \\
    addgroup -S -g 1000 minecraft && \\
    adduser -S minecraft -G minecraft -h /minecraft -u 1000 && \\
    curl -Ls "${paperMCDownload}" -o /minecraft/paper-mc.jar && \\
    mkdir /minecraft/data && \\
    mkdir /minecraft/html && \\
    chown -R minecraft:minecraft /minecraft

USER minecraft

WORKDIR /minecraft

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 --context \"${workspace}\" -f \"${workspace}/Dockerfile\" --destination \"${repository}/library/minecraft:latest\""
			}
		}
	}
}