start.sh

#!/bin/bash

# Terminate running screen, if it exists
if screen -list | grep -q "botscreen"; then
  echo "Terminating current bot instance"
  screen -S botscreen -p 0 -X stuff "stop^M"
else
  echo "No current bot instance found"
fi

# Parse API data to find file name of latest build
filename=$(curl -s http://ci.tterrag.com/job/MCBot/lastSuccessfulBuild/api/json | jq -r '.artifacts[0].fileName')

# Check if bot is up to date
if [ -e $filename ]; then
  # If it is, do nothing
  echo "Bot up to date!"
else
  # Otherwise, delete and redownload

  # Remove old bot jar
  echo "Deleting old jar"
  rm -f MCBot-*.jar

  # Download new bot jar
  echo "Downloading new file: $filename"
  wget "http://ci.tterrag.com/job/MCBot/lastSuccessfulBuild/artifact/build/libs/$filename"
fi

# Start new bot instance
echo "Starting screen"
screen -dmS botscreen java -jar $filename