#!/usr/bin/env bash
set -euo pipefail

export TERM=xterm

STEAMCMDDIR="${STEAMCMDDIR:-/opt/steamcmd}"
VALHEIMDIR="${VALHEIMDIR:-/opt/valheim}"
BACKUPDIR="${BACKUPDIR:-/backups}"

BEPINEX_URL="${BEPINEX_URL:-https://cloud.theminisip.ca/index.php/s/K32Lnjc6TyWXaiN/download}"

SERVER_NAME="${SERVER_NAME:-Valheim Server}"
WORLD_NAME="${WORLD_NAME:-Dedicated}"
SERVER_PASSWORD="${SERVER_PASSWORD:-changeme}"
PUBLIC="${PUBLIC:-1}"

install_valheim() {
  echo "[valheim] installing/updating via SteamCMD (forced non-interactive)..."
  "${STEAMCMDDIR}/steamcmd.sh" \
    +force_install_dir "${VALHEIMDIR}" \
    +@sSteamCmdForcePlatformType linux \
    +login anonymous \
    +app_update 896660 validate \
    +quit
}

install_bepinex() {
  echo "[bepinex] downloading pack..."
  curl -L "${BEPINEX_URL}" -o /tmp/bepinex.zip

  echo "[bepinex] validating zip..."
  if ! unzip -t /tmp/bepinex.zip >/dev/null 2>&1; then
    echo "[bepinex] ERROR: Downloaded file is not a valid ZIP."
    exit 1
  fi

  echo "[bepinex] extracting..."
  rm -rf /tmp/bepinex
  mkdir -p /tmp/bepinex
  unzip -q /tmp/bepinex.zip -d /tmp/bepinex

  # Folder confirmed by you
  bep_root="/tmp/bepinex/BepInExPack_Valheim"

  if [ ! -d "${bep_root}" ]; then
    echo "[bepinex] ERROR: Expected folder BepInExPack_Valheim not found."
    ls -R /tmp/bepinex
    exit 1
  fi

  echo "[bepinex] copying contents of ${bep_root} to ${VALHEIMDIR}"
  cp -r "${bep_root}/"* "${VALHEIMDIR}/"

  # Fix CRLF if present
  sed -i 's/\r$//' "${VALHEIMDIR}/start_server_bepinex.sh"

  # Ensure executable
  chmod +x "${VALHEIMDIR}/start_server_bepinex.sh"
}

backup_world() {
  echo "[backup] backing up world..."
  ts=$(date +"%Y-%m-%d_%H-%M-%S")
  mkdir -p "${BACKUPDIR}"
  cp "/config/worlds_local/${WORLD_NAME}.db" "${BACKUPDIR}/${WORLD_NAME}_${ts}.db" || true
  cp "/config/worlds_local/${WORLD_NAME}.fwl" "${BACKUPDIR}/${WORLD_NAME}_${ts}.fwl" || true
}

install_valheim
install_bepinex

# Background backup loop
while true; do
  sleep 3600
  backup_world
done &

cd "${VALHEIMDIR}"

echo "[valheim] using password: ${SERVER_PASSWORD}"
echo "[valheim] starting server..."

exec ./start_server_bepinex.sh \
  -name "${SERVER_NAME}" \
  -port 2456 \
  -world "${WORLD_NAME}" \
  -password "${SERVER_PASSWORD}" \
  -public "${PUBLIC}"