#!/bin/bash

# shellcheck source=start-utils
. "${SCRIPTS:-$(dirname "$0")}/start-utils"
set -o pipefail
set -e
isDebugging && set -x

# Pumpkin is released as a native executable per platform
case "$(uname -m)" in
  x86_64 | amd64)
    pumpkinArch=X64
    ;;
  aarch64 | arm64)
    pumpkinArch=ARM64
    ;;
  *)
    logError "Pumpkin does not provide a Linux build for $(uname -m)"
    exit 1
    ;;
esac

pumpkinAsset="pumpkin-${pumpkinArch}-Linux"
# The Alpine based image needs the musl linked build
if [[ $(getDistro) == alpine ]]; then
  pumpkinAsset+="-musl"
fi

if isTrue "${FORCE_REDOWNLOAD:-false}"; then
  log "Forcing re-download of ${pumpkinAsset}"
  rm -f "/data/${pumpkinAsset}"
fi

if ! SERVER=$(mc-image-helper github download-latest-asset \
  --output-directory=/data \
  --name-pattern="^${pumpkinAsset}$" \
  Pumpkin-MC/Pumpkin
  ); then
    logError "Failed to download ${pumpkinAsset} from the latest Pumpkin release"
    exit 1
fi

log "Using Pumpkin server executable ${SERVER}"
if [[ ! -x "${SERVER}" ]]; then
  chmod +x "${SERVER}"
fi

export SERVER
# Native executable, so the final exec skips the JVM handling
export FAMILY=NATIVE

pumpkinConfig=/data/pumpkin.toml

# Narrow booleans to the values that the patch bool conversion accepts
function exportBoolean() {
  local target=$1
  local source=$2
  if [[ -v $source ]]; then
    local value=false
    if isTrue "${!source}"; then
      value=true
    fi
    printf -v "$target" '%s' "$value"
    export "$target"
  fi
}

function exportInteger() {
  local target=$1
  local source=$2
  if [[ -v $source ]] && isNumeric "${!source}"; then
    printf -v "$target" '%s' "${!source}"
    export "$target"
  fi
}

function normalizeGamemode() {
  case "${1,,}" in
    0 | su*) echo Survival ;;
    1 | c*) echo Creative ;;
    2 | a*) echo Adventure ;;
    3 | sp*) echo Spectator ;;
    *) echo "$1" ;;
  esac
}

function normalizeDifficulty() {
  case "${1,,}" in
    0 | p*) echo Peaceful ;;
    1 | e*) echo Easy ;;
    2 | n*) echo Normal ;;
    3 | h*) echo Hard ;;
    *) echo "$1" ;;
  esac
}

exportBoolean PUMPKIN_ONLINE_MODE ONLINE_MODE
exportBoolean PUMPKIN_HARDCORE HARDCORE
exportBoolean PUMPKIN_ALLOW_NETHER ALLOW_NETHER
exportBoolean PUMPKIN_FORCE_GAMEMODE FORCE_GAMEMODE
exportBoolean PUMPKIN_ENFORCE_WHITELIST ENFORCE_WHITELIST
exportBoolean PUMPKIN_ACCEPTS_TRANSFERS ACCEPTS_TRANSFERS
exportBoolean PUMPKIN_PREVENT_PROXY_CONNECTIONS PREVENT_PROXY_CONNECTIONS
exportBoolean PUMPKIN_PVP PVP
exportBoolean PUMPKIN_ENABLE_RCON ENABLE_RCON
exportBoolean PUMPKIN_ENABLE_QUERY ENABLE_QUERY
exportBoolean PUMPKIN_RESOURCE_PACK_ENFORCE RESOURCE_PACK_ENFORCE

exportInteger PUMPKIN_MAX_PLAYERS MAX_PLAYERS
exportInteger PUMPKIN_VIEW_DISTANCE VIEW_DISTANCE
exportInteger PUMPKIN_SIMULATION_DISTANCE SIMULATION_DISTANCE
exportInteger PUMPKIN_OP_PERMISSION_LEVEL OP_PERMISSION_LEVEL
exportInteger PUMPKIN_SPAWN_PROTECTION SPAWN_PROTECTION

if [[ -v MODE ]]; then
  PUMPKIN_GAMEMODE=$(normalizeGamemode "$MODE")
  export PUMPKIN_GAMEMODE
fi

if [[ -v DIFFICULTY ]]; then
  PUMPKIN_DIFFICULTY=$(normalizeDifficulty "$DIFFICULTY")
  export PUMPKIN_DIFFICULTY
fi

# The image enables the whitelist whenever one is provided
if [[ -v WHITELIST || -v WHITELIST_FILE ]]; then
  export PUMPKIN_WHITE_LIST=true
else
  exportBoolean PUMPKIN_WHITE_LIST ENABLE_WHITELIST
fi

if [[ -v RESOURCE_PACK ]]; then
  export PUMPKIN_RESOURCE_PACK_ENABLED=true
fi

# Only override the listening addresses when a port was declared
if [[ -v SERVER_PORT ]]; then
  export PUMPKIN_JAVA_ADDRESS="0.0.0.0:${SERVER_PORT}"
fi
if [[ -v RCON_PORT ]]; then
  export PUMPKIN_RCON_ADDRESS="0.0.0.0:${RCON_PORT}"
fi
if [[ -v QUERY_PORT ]]; then
  export PUMPKIN_QUERY_ADDRESS="0.0.0.0:${QUERY_PORT}"
fi

if [[ ! -f "$pumpkinConfig" ]]; then
  log "Creating initial Pumpkin configuration"
  cp /image/pumpkin.toml "$pumpkinConfig"
fi

log "Applying Pumpkin configuration from environment variables"
# Undeclared variables only warn, so only surface failures
if ! pumpkinPatchResult=$(mc-image-helper patch --patch-env-prefix "" /image/pumpkin-config-patch.json 2>&1); then
  logWarning "Failed to apply one or more settings to ${pumpkinConfig}"
  echo "$pumpkinPatchResult" | applyLogPrefix
fi

exec "$(dirname "$0")/start-setupWorld" "$@"