#!/bin/bash

MINECRAFT_PATH="{{ minecraft_data_location }}"

COMMAND=${1:-help}

cd "$MINECRAFT_PATH"

usage() {
cat <<EOF
  $0 up
     Starts the minecraft server
  $0 restart
     Restarts the minecraft server
  $0 down
     Stops the minecraft server
  $0 logs
     Show the logs of the minecraft server
  $0 status
     Show the status of all minecraft containers
  $0 mod-ls
     Lists all installed mod packages in the mods directory of the minecraft server
  $0 mod-cp <some mod jar file>
     Copies a mod package to the mods directory of the mincraft server
  $0 mod-rm <file name from mod-ls output>
     Removes a mod package from the mods directory of the minecraft server
  $0 world-ls
     Lists backed up worlds
  $0 world-rm <time reference>
     Removes a world backup
  $0 world-backup
     Creates a backup of the current world
  $0 world-restore <time reference>
     Restores a world from the backup
  $0 world-destroy
     Destroys the current world of the server.
     Warning: Stop the server before using this.
EOF
}

case "$COMMAND" in
    "restart")
      docker-compose restart
      ;;
    "up")
      docker-compose up -d
      ;;
    "down")
      docker-compose down
      ;;
    "logs")
      docker-compose logs minecraft
      ;;
    "status")
      docker-compose ps
      ;;
    "mod-cp")
      if [ ! -e "$OLDPWD/$2" ]; then
        echo "file \"$OLDPWD/$2\" not found"
	      exit 1
      fi
      cp "$OLDPWD/$2" "$MINECRAFT_PATH/data/mods/"
      chown -R root:root "$MINECRAFT_PATH/data/mods/"
      ;;
    "mod-rm")
      if ls "$MINECRAFT_PATH/data/mods/" | grep "$2"; then
        rm "$MINECRAFT_PATH/data/mods/$2"
      fi
      ;;
    "mod-ls")
      ls "$MINECRAFT_PATH/data/mods/"
      ;;
    "world-ls")
      ls "$MINECRAFT_PATH/worlds/"
      ;;
    "world-rm")
      if ls "$MINECRAFT_PATH/worlds/" | grep "$2"; then
        rm -Ir "$MINECRAFT_PATH/worlds/$2"
      fi
      ;;
    "world-backup")
      mkdir "$MINECRAFT_PATH/worlds/$(date +%Y-%m-%dT%H:%M)"
      cp -r "$MINECRAFT_PATH/data/"{world,world_the_end,world_nether} "$MINECRAFT_PATH/worlds/$(date +%Y-%m-%dT%H:%M)/"
      ;;
    "world-restore")
      if [ -e "$MINECRAFT_PATH/data/world" ]; then
	      echo "Please destroy the world before restoring"
        exit 1
      fi
      if ls "$MINECRAFT_PATH/worlds/" | grep "$2"; then
        cp -Ir "$MINECRAFT_PATH/worlds/$2/*" "$MINECRAFT_PATH/data/"
      fi
      ;;
    "world-destroy")
      rm -Ir "$MINECRAFT_PATH/data/"{world,world_the_end,world_nether}
      ;;
    *)
      usage
      ;;
esac