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

mkdir -p /mnt/server
cd /mnt/server

if [ $VERSION == *SNAPSHOT ]; then
  echo -e "Using Maven"
  
  DOWNLOAD_URL="https://repo.glowstone.net/service/rest/v1/search/assets/download?group=net.glowstone&name=glowstone&sort=version&repository=snapshots&maven.baseVersion=${VERSION}&direction=desc&maven.classifier="
else 
    echo -e "Using GitHub."

    if [ -z "${GITHUB_USER}" ] && [ -z "${GITHUB_OAUTH_TOKEN}" ] ; then
        echo -e "using anon api call"
    else
        echo -e "user and oauth token set"
        alias curl='curl -u ${GITHUB_USER}:${GITHUB_OAUTH_TOKEN} '
    fi
    
    ## get release info and download links
    LATEST_JSON=$(curl --silent "https://api.github.com/repos/${GITHUB_PACKAGE}/releases/latest")
    RELEASES=$(curl --silent "https://api.github.com/repos/${GITHUB_PACKAGE}/releases")

    if [ -z "${VERSION}" ] || [ "${VERSION}" == "latest" ]; then
        DOWNLOAD_URL=$(echo ${LATEST_JSON} | jq .assets | jq -r .[].browser_download_url | grep -i ${MATCH})
    else
        VERSION_CHECK=$(echo ${RELEASES} | jq -r --arg VERSION "${VERSION}" '.[] | select(.tag_name==$VERSION) | .tag_name')
        if [ "${VERSION}" == "${VERSION_CHECK}" ]; then
            DOWNLOAD_URL=$(echo ${RELEASES} | jq -r --arg VERSION "${VERSION}" '.[] | select(.tag_name==$VERSION) | .assets[].browser_download_url' | grep -i ${MATCH})
        else
            echo -e "defaulting to latest release"
            DOWNLOAD_URL=$(echo ${LATEST_JSON} | jq .assets | jq -r .[].browser_download_url)
        fi
    fi
fi

echo -e "Downloading..."
curl --silent -L -o ${SERVER_JARFILE} ${DOWNLOAD_URL}

echo -e "Generating configuration..."
java -jar ${SERVER_JARFILE} --generate-config

echo -e "Install Complete"