#!/bin/sh
set -eu

############
# 常量定义 #
############

REPO_URL="${REPO_URL:-https://gitea.service.jazzwhom.top/Passthem/pt-minecraft-modpack}"
REPO_REF="${REPO_REF:-main}"
PT_SERVER="${PT_SERVER:-server-02-skygrid}"
INSTALL_DIR="${INSTALL_DIR:-$(pwd)/pt-minecraft-modpack}"
ARCHIVE_PATH="${ARCHIVE_PATH:-$(pwd)/pt-minecraft-modpack.tar.gz}"
TMP_DIR="${TMP_DIR:-$(pwd)/pt-minecraft-modpack.__tmp}"
PT_JAVA_VERSION="${PT_JAVA_VERSION:-17}"
SERVER_MEMORY="${SERVER_MEMORY:-2048}"
PACKWIZ_INSTALLER_URL="${PACKWIZ_INSTALLER_URL:-https://github.com/packwiz/packwiz-installer/releases/latest/download/packwiz-installer.jar}"

openjdk8="/usr/bin/jdk/jdk1.8.0_361/bin/java"
openjdk11="/usr/bin/jdk/jdk-11.0.18/bin/java"
openjdk17="/usr/bin/jdk/jdk-17.0.6/bin/java"
openjdk19="/usr/bin/jdk/jdk-19.0.2/bin/java"
openjdk21="/usr/bin/jdk/jdk-21.0.2/bin/java"
openjdk25="/usr/bin/jdk/jdk-25.0.2/bin/java"

maxmem=$((SERVER_MEMORY - 1000))

case "$PT_JAVA_VERSION" in
  8)  JAVA_BIN="$openjdk8" ;;
  11) JAVA_BIN="$openjdk11" ;;
  17) JAVA_BIN="$openjdk17" ;;
  19) JAVA_BIN="$openjdk19" ;;
  21) JAVA_BIN="$openjdk21" ;;
  25) JAVA_BIN="$openjdk25" ;;
  *)  JAVA_BIN="java" ;;
esac

PT_JAVA_ARGS="${PT_JAVA_ARGS:--Xms1024M -Xmx${maxmem}M}"

############
# 辅助函数 #
############

log() {
  printf '[panel-entry] %s\n' "$*"
}

fail() {
  printf '[panel-entry] ERROR: %s\n' "$*" >&2
  exit 1
}

need_cmd() {
  command -v "$1" >/dev/null 2>&1 || fail "缺少命令: $1"
}

need_cmd sh
need_cmd tar
need_cmd find

rm -rf "$TMP_DIR"
mkdir -p "$TMP_DIR"

log "下载仓库归档: $REPO_URL ($REPO_REF)"
if command -v curl >/dev/null 2>&1; then
  curl -fL --retry 3 --retry-delay 2 -o "$ARCHIVE_PATH" "$REPO_URL/archive/$REPO_REF.tar.gz"
elif command -v wget >/dev/null 2>&1; then
  wget -O "$ARCHIVE_PATH" "$REPO_URL/archive/$REPO_REF.tar.gz"
else
  fail "缺少 curl 或 wget"
fi

log "解压仓库归档"
tar -xzf "$ARCHIVE_PATH" -C "$TMP_DIR"

EXTRACTED_DIR="$(find "$TMP_DIR" -mindepth 1 -maxdepth 1 -type d | head -n 1)"
[ -n "$EXTRACTED_DIR" ] || fail "解压失败"

if [ ! -d "$INSTALL_DIR" ]; then
  mv "$EXTRACTED_DIR" "$INSTALL_DIR"
else
  log "保留现有安装目录，仅覆盖仓库文件"
  cp -r "$EXTRACTED_DIR"/. "$INSTALL_DIR"/
  rm -rf "$EXTRACTED_DIR"
fi
rm -rf "$TMP_DIR" "$ARCHIVE_PATH"

cd "$INSTALL_DIR"
mkdir -p .pt-panel-runtime/downloads

log "下载 packwiz-installer"
if command -v curl >/dev/null 2>&1; then
  curl -fL --retry 3 --retry-delay 2 -o .pt-panel-runtime/downloads/packwiz-installer.jar "$PACKWIZ_INSTALLER_URL"
elif command -v wget >/dev/null 2>&1; then
  wget -O .pt-panel-runtime/downloads/packwiz-installer.jar "$PACKWIZ_INSTALLER_URL"
else
  fail "缺少 curl 或 wget"
fi

log "调用仓库内 start.sh"
PT_REPO_URL="$REPO_URL" \
PT_REPO_REF="$REPO_REF" \
PT_SERVER="$PT_SERVER" \
PT_JAVA_ARGS="$PT_JAVA_ARGS" \
PT_JAVA_VERSION="$PT_JAVA_VERSION" \
SERVER_MEMORY="$SERVER_MEMORY" \
JAVA_BIN="$JAVA_BIN" \
PT_PACKWIZ_BOOTSTRAP_NO_UPDATE="${PT_PACKWIZ_BOOTSTRAP_NO_UPDATE:-1}" \
PT_PACKWIZ_BOOTSTRAP_MAIN_JAR="$(pwd)/.pt-panel-runtime/downloads/packwiz-installer.jar" \
bash ./start.sh