#!/bin/bash
#Claytonia.net

# Game and server details
game="moddedmc"
server="BetterMC"

# Discord webhook details
DISCORD_WEBHOOK_URL="https://discord.com/api/webhooks/108116989/r6m9CEumGdsrU7D6MxIS-D"
DISCORD_USERNAME="ModdedMC"
DISCORD_AVATAR_URL="https://i.imgur.com/oBycxyt.png"

# Monitoring details
# What to look for in the log file that tells the script the server is done saving and ready to restart.
MONITOR_STRING="Stopped IO worker"
# Where is the log file?
LOG_FILE="/home/$game/$server/logs/latest.log"

# Functions
start_server() {
  # Sleep to give time for all start.sh discord msgs to be sent
  sleep 3

  # Kill any previous screen sessions
  screen -X -S "$game" quit > /dev/null 2>&1

  # Start the screen and run the server
  cd "/home/$game/$server/"
  screen -dmS "$game" ./start.sh && echo "Restarted at: $(date)" >>script.log
}

# Ensure the working directory exists
cd "/home/$game/$server/" || exit

# Notify Discord about server restart
discord_message="Saving world and restarting the server."
curl -H "Content-Type: application/json" -X POST -d '{"username": "'"$DISCORD_USERNAME"'", "content": "'"$discord_message"'", "avatar_url": "'"$DISCORD_AVATAR_URL"'"}' "$DISCORD_WEBHOOK_URL"

# Run the screen command to stop the server
output=$(screen -p 0 -S "$game" -X eval "stuff stop\015" 2>&1)

# Check if the output contains the "No screen session found" message
if [[ $output == *"No screen session found."* ]]; then
  echo "Starting Server"
  start_server
  exit
else
  echo "Saving World, Please wait."
  echo "This takes some time!"

  # Tail the log file and monitor for the specified string
  #waits for the server to fully save before starting the server instead of force quitting the screen
  tail -n 0 -F "$LOG_FILE" | while read -r line; do
    if [[ $line == *"$MONITOR_STRING"* ]]; then
      echo "Starting Server"
      start_server
      exit
    fi
  done
fi

exit