#!groovy

def repository = "registry.c.test-chamber-13.lan"
def repositoryCreds = "harbor-repository-creds"

def workspace
def dockerFile
def paperVersion
def memoryMin
def memoryMax
def paperDownload

def label = "kubernetes-${UUID.randomUUID().toString()}"
def templateName = "pipeline-worker"
pipeline {
    agent {
        kubernetes {
            yaml functions.podYaml(
                repo: repository,
                templateName: templateName,
                kaniko: true,
                alpine: true
            )
        }
    }

    stages {
        stage ('Initalize Jenkins') {
            steps {
                script {
                    workspace = pwd()
                    paperVersion = "1.21.1"
                    memoryMin = "1g"
                    memoryMax = "16g"
                    dockerFile = """FROM registry.c.test-chamber-13.lan/library/alpine:latest as builder

ARG paperDownload

RUN addgroup -S -g 1000 minecraft && \\
    adduser --disabled-password -G minecraft --gecos "application account" --home "/minecraft" --shell "/sbin/nologin" --uid 1000 minecraft && \\
    apk add --no-cache curl && \\
    mkdir /minecraft/data && \\
    mkdir /minecraft/html && \\
    curl --location --fail --silent \${paperDownload} -o /minecraft/paper-mc.jar

#FROM registry.c.test-chamber-13.lan/google/distroless/java17-debian11:latest
FROM registry.c.test-chamber-13.lan/dockerhub/library/openjdk:21

LABEL maintainer="The_Spider <spider@smoothnet.org>"

COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
COPY --from=builder /etc/passwd /etc/group /etc/
COPY --from=builder --chown=minecraft:minecraft /minecraft/ /minecraft/

USER minecraft

WORKDIR /minecraft/data

ENTRYPOINT ["/usr/bin/java", "-Xms${memoryMin}", "-Xmx${memoryMax}", "-jar"]
CMD ["../paper-mc.jar"]
"""
                }
            }
        }

        stage ("Get Paper-MC Version") {
            steps {
                container ("alpine") {
                    script {
                        sh """
                            if [ ! -f "/usr/bin/curl" ] || [ ! -x "/usr/bin/curl" ]; then
                                apk add --no-cache curl
                            fi
                            if [ ! -f "/usr/bin/jq" ] || [ ! -x "/usr/bin/jq" ]; then
                                apk add --no-cache jq
                            fi
                        """
                        paperDownload = sh (
                            script: """
                                paperBuild=\$(curl --silent --location --fail https://nexus.c.test-chamber-13.lan/repository/paper-io/api/v2/projects/paper/versions/${paperVersion} | jq '.builds | max')
                                paperFile=\$(curl --silent --location --fail https://nexus.c.test-chamber-13.lan/repository/paper-io/api/v2/projects/paper/versions/${paperVersion}/builds/\${paperBuild} | jq -r '.downloads.application.name')
                                echo https://nexus.c.test-chamber-13.lan/repository/paper-io/api/v2/projects/paper/versions/${paperVersion}/builds/\${paperBuild}/downloads/\${paperFile}
                            """,
                            returnStdout: true
                        ).trim()
                    }
                }
            }
        }

        stage ('Build & Push') {
            steps {
                container ('kaniko') {
                    script {
                        declarativeFunctions.buildContainerMultipleDestinations(
                            dockerFile: dockerFile,
                            repositoryAccess: [
                                [
                                    repository: repository,
                                    credentials: repositoryCreds
                                ],
                            ],
                            destination: [
                                "${repository}/library/minecraft:latest",
                            ],
                            [
                                "paperDownload=${paperDownload}"
                            ]
                        )
                    }
                }
            }
        }
    }
}