import os

# ===== SETTINGS =====

java_path = "java"
mc_version = "1.21.1"

# ======== END =======

# Check your build
old_build = os.listdir()
for i in range(len(old_build)):
	if old_build[i][:6] == "paper-":
		old_build = old_build[i].split("-")
		old_build = old_build[2]
		old_build = old_build[:-4]
		break

# Check newest build
new_build = os.popen(f"curl -s https://api.papermc.io/v2/projects/paper/versions/{mc_version}").read()
new_build = new_build.split(",")
new_build = new_build[-1]
new_build = new_build[:-2]

if old_build != new_build:
	os.system(f"wget https://api.papermc.io/v2/projects/paper/versions/{mc_version}/builds/{new_build}/downloads/paper-{mc_version}-{new_build}.jar")
	os.system(f"rm paper-{mc_version}-{old_build}.jar")

os.system(f"echo 'eula=true' > eula.txt")

os.system(f"{java_path} -jar paper-{mc_version}-{new_build}.jar nogui")