#!/bin/bash
# Vintage Story Installation Script
#
# Server Files: /mnt/server
apt update
apt -y install curl jq

declare -A API_URLS=(
  ["stable"]="http://api.vintagestory.at/stable.json"
  ["unstable"]="http://api.vintagestory.at/unstable.json"
)

declare -A DOWNLOAD_URLS=(
  ["stable"]="https://cdn.vintagestory.at/gamefiles/stable/vs_server_linux-x64_${RELEASE_VERSION}.tar.gz"
  ["unstable"]="https://cdn.vintagestory.at/gamefiles/unstable/vs_server_linux-x64_${RELEASE_VERSION}.tar.gz"
  ["pre"]="https://cdn.vintagestory.at/gamefiles/pre/vs_server_linux-x64_${RELEASE_VERSION}.tar.gz"
)

BRANCH="${FILES_BRANCH}"

if [ -z "${RELEASE_VERSION}" ] || [ "${RELEASE_VERSION}" == "latest" ] && [ "${BRANCH}" == "pre" ]; then
  echo "-----------------------------------------"
  echo "Installation failed..."
  echo "Please specify the version when using RELEASE BRANCH: pre"
  echo "-----------------------------------------"  
  exit
fi

if [ -z "${RELEASE_VERSION}" ] || [ "${RELEASE_VERSION}" == "latest" ]; then
  API_URL="${API_URLS[$BRANCH]}"
  echo "API URL: $API_URL"
  DOWNLOAD_URL=$(curl -SsL "$API_URL" | jq -r 'if ([.[]] | .[0].linuxserver.urls.cdn) != null then [.[]] | .[0].linuxserver.urls.cdn else [.[]] | .[0].linuxserver.urls.local end')
else
  DOWNLOAD_URL="${DOWNLOAD_URLS[$BRANCH]}"
fi

echo "Download URL: $DOWNLOAD_URL"

cd /mnt/server/ || exit

# make sure to cleanup the prior installation else this might cause issue with old asset files that do not exist in the new version
if [ -d "assets" ]; then
  echo "Removing old installation files"
  rm -rf assets/
  rm -rf Lib/
fi
curl -o vs_server.tar.gz "${DOWNLOAD_URL}"
tar -xzf vs_server.tar.gz

if [ $? -ne 0 ]; then
  echo "-----------------------------------------"
  echo "Installation failed..."
  echo "Please make sure the specified version exists: $RELEASE_VERSION"
  echo "-----------------------------------------"
  rm vs_server.tar.gz
  exit
fi

rm vs_server.tar.gz
rm server.sh

echo "-----------------------------------------"
echo "Installation completed..."
echo "-----------------------------------------"