# Factorio on Kubernetes.

local kube = import "../../../../kube/kube.libsonnet";

{
    local factorio = self,
    local cfg = factorio.cfg,

    cfg:: {
        namespace: error "namespace must be set",
        appName: "factorio",
        storageClassName: "waw-hdd-redundant-2",
        prefix: "", # if set, should be 'foo-'
        proxyImage: error "proxyImage must be set",

        rconPort: 2137,
        rconPassword: "farts",

        tag: "latest",
        image: "registry.k0.hswaw.net/q3k/factorio:" + cfg.tag,
        resources: {
            requests: {
                cpu: "500m",
                memory: "500Mi",
            },
            limits: {
                cpu: "1",
                memory: "1Gi",
            },
        },

        mods: [],
    },


    makeName(suffix):: cfg.prefix + suffix,

    metadata:: {
        namespace: cfg.namespace,
        labels: {
            "app.kubernetes.io/name": factorio.makeName("factorio"),
            "app.kubernetes.io/managed-by": "kubecfg",
            "app.kubernetes.io/component": "factorio",
        },
    },

    volumeClaimMods: kube.PersistentVolumeClaim(factorio.makeName("factorio-mods")) {
        metadata+: factorio.metadata,
        spec+: {
            storageClassName: cfg.storageClassName,
            accessModes: [ "ReadWriteOnce" ],
            resources: {
                requests: {
                    storage: "1Gi",
                },
            },
        },
    },

    volumeClaimData: kube.PersistentVolumeClaim(factorio.makeName("factorio")) {
        metadata+: factorio.metadata,
        spec+: {
            storageClassName: cfg.storageClassName,
            accessModes: [ "ReadWriteOnce" ],
            resources: {
                requests: {
                    storage: "5Gi",
                },
            },
        },
    },

    configMap: kube.ConfigMap(factorio.makeName("config")) {
        metadata+: factorio.metadata,
        data: {
            "mods.pb.text": std.join("\n", [
                "mod { name: \"%s\" version: \"%s\" }" % [m.name, m.version],
                for m in cfg.mods
            ]),
        },
    },

    deployment: kube.Deployment(factorio.makeName("factorio")) {
        metadata+: factorio.metadata,
        spec+: {
            replicas: 1,
            template+: {
                spec+: {
                    volumes_: {
                        data: kube.PersistentVolumeClaimVolume(factorio.volumeClaimData),
                        mods: kube.PersistentVolumeClaimVolume(factorio.volumeClaimMods),
                        config: kube.ConfigMapVolume(factorio.configMap),
                    },
                    initContainers_: {
                        modproxy: kube.Container("modproxy") {
                            image: cfg.proxyImage,
                            command: [
                                "/games/factorio/modproxy/client",
                                "-hspki_disable",
                                "-factorio_path", "/factorio",
                                "-proxy", "proxy.factorio.svc.cluster.local:4200",
                                "-config_path", "/factorio/mods.pb.text",
                            ],
                            volumeMounts_: {
                                mods: { mountPath: "/factorio/mods" },
                                config: { mountPath: "/factorio/mods.pb.text", subPath: "mods.pb.text" },
                            },
                        },
                    },
                    containers_: {
                        factorio: kube.Container(factorio.makeName("factorio")) {
                            image: cfg.image,
                            args: [
                                "/entrypoint.sh",
                                "--rcon-port", std.toString(cfg.rconPort),
                                "--rcon-password", cfg.rconPassword,
                            ],
                            ports_: {
                                client: { containerPort: 34197 },
                                rcon: { containerPort: cfg.rconPort },
                            },
                            volumeMounts_: {
                                data: { mountPath: "/data" },
                                mods: { mountPath: "/factorio/mods" },
                            },
                            resources: cfg.resources,
                        },
                    },
                },
            },
        },
    },
    svc: kube.Service(factorio.makeName("factorio")) {
        metadata+: factorio.metadata {
            // hack - have to keep existing naming scheme otherwise we'd lose addresses
            labels: {
                "app.kubernetes.io/name": cfg.appName,
            },
        },
        target_pod:: factorio.deployment.spec.template,
        spec+: {
            ports: [
                { name: "client", port: 34197, targetPort: 34197, protocol: "UDP" },
            ],
            type: "LoadBalancer",
        },
    },
}