0k-charms/minecraft/lib/common

# -*- mode: shell-script -*-


MINECRAFT_PATH="$SERVICE_CONFIGSTORE/opt/apps/minecraft"
MINECRAFT_DATA="/var/lib/minecraft"

minecraft:init-binary() {
    local type="$1" version="$2"

    case "$type" in
        "legacy")
            MINECRAFT_URL="https://docker.0k.io/downloads/minecraft_server.${version}.jar"
            MINECRAFT_BINARY="minecraft_server.${version}.jar"
            ;;
        "paper")
            MINECRAFT_URL="https://api.papermc.io/v2/projects/paper/versions/${version%-*}/builds/${version##*-}/downloads/paper-${version}.jar"
            MINECRAFT_BINARY="paper.${version}.jar"
            ;;
        *)
            err "Unknown ${WHITE}type${NORMAL} '$type'. Please use on of: legacy, paper"
            exit 1
            ;;
    esac
    if ! [ -f "$MINECRAFT_BINARY" ]; then
        mkdir -p "${MINECRAFT_PATH}"
        wget "$MINECRAFT_URL" -O "$MINECRAFT_PATH/$MINECRAFT_BINARY" || exit 1
    fi
    init-config-add "
$SERVICE_NAME:
  volumes:
    - \"$MINECRAFT_PATH/${MINECRAFT_BINARY}:${MINECRAFT_DATA}/server.jar\"
"

}


minecraft:init-command() {
    local threads="${1:-4}" mem="${2:-2048M}"
    init-config-add "
$SERVICE_NAME:
  command:
  - java
  - -Xmx${mem}
  - -Xms${mem}
  - -XX:ParallelGCThreads=${threads}
  - -jar
  - server.jar
  - nogui
"
    echo "eula=TRUE" > "$SERVICE_DATASTORE/${MINECRAFT_DATA}/eula.txt"
}


minecraft:make-whitelist() {
    local whitelist="$1"

    {
        e "$whitelist" |
            yq -o=json \
               'to_entries | map({"uuid": .key, "name": .value})'
    } > "$SERVICE_DATASTORE/${MINECRAFT_DATA}/whitelist.json"

}

minecraft:make-ops() {
    local ops="$1"

    {
        e "$ops" |
            yq -o=json \
               'to_entries | map({
                   "uuid": .value.uuid,
                   "name": .key,
                   "level": .value.level,
                   "bypassesPlayerLimit": .value.bypassesPlayerLimit
                })'
    } > "$SERVICE_DATASTORE/${MINECRAFT_DATA}/ops.json"
}

minecraft:make-properties() {
    local properties="$1"

    {
        e "$properties" |
            yq 'to_entries | map(.key + "=" + .value) | .[]'
    } > "$SERVICE_DATASTORE/${MINECRAFT_DATA}/server.properties"
}


minecraft:config-hash() {
    local opts="$1"
    debug "Adding config hash to enable recreating upon config change."
    config_hash=$(e "$opts" | md5_compat) || exit 1
    init-config-add "
$SERVICE_NAME:
  labels:
  - compose.config_hash=$config_hash
"
}