From 12a4f9361e0c79fe03cafa3c283eb96706359f46 Mon Sep 17 00:00:00 2001
From: Hykilpikonna <me@hydev.org>
Date: Sun, 2 Jan 2022 23:17:46 -0500
Subject: [PATCH] [+] Minecraft start script

---
 misc/minecraft-start.py | 95 +++++++++++++++++++++++++++++++++++++++++
 requirements.txt        |  2 +
 2 files changed, 97 insertions(+)
 create mode 100644 misc/minecraft-start.py

diff --git a/misc/minecraft-start.py b/misc/minecraft-start.py
new file mode 100644
index 0000000..63d6e73
--- /dev/null
+++ b/misc/minecraft-start.py
@@ -0,0 +1,95 @@
+#!/usr/bin/env python3
+
+import os
+import re
+import shutil
+import sys
+import urllib.request
+from datetime import datetime
+import hypy_utils
+
+import requests
+import select
+
+JAVA = '/usr/local/opt/openjdk@17/bin/java'
+MAX_RAM = '4096M'
+MIN_RAM = MAX_RAM
+TIME = 5
+
+version_re = re.compile('[0-9]\.[0-9]+\.[0-9]+')
+
+
+def download_latest_purpur() -> str:
+    latest = requests.get(f'https://api.purpurmc.org/v2/purpur/{ver}/latest').json()
+
+    # Download update
+    print(f'- Downloading...')
+    new_f = f"purpur-{ver}-{latest['build']}.jar"
+    urllib.request.urlretrieve(f"https://api.purpurmc.org/v2/purpur/{ver}/latest/download", new_f)
+
+    # Check md5
+    print(f'- Checking md5... ({latest["md5"]})')
+    if hypy_utils.md5(new_f) == latest['md5']:
+        print(f'- Checksum passed!')
+    else:
+        raise AssertionError('Checksum didn\'t pass.')
+
+    return new_f
+
+
+def update(f: str, ver: list[str]) -> str:
+    # If no jar found, download latest purpur
+    if f == '':
+        print(f'No jar found, downloading latest purpur...')
+
+
+    # Fetch latest purpur build
+    if f.startswith('purpur'):
+        ver = ver[0]
+        build = int(re.findall('[0-9]{3,5}', f)[0])
+
+        print(f'Checking release update for version {ver}... Current build: {build}')
+        latest = requests.get(f'https://api.purpurmc.org/v2/purpur/{ver}/latest').json()
+        latest_build = int(latest['build'])
+
+        # Update
+        if latest_build <= build:
+            print('Already on latest version, nothing to do.')
+            return f
+
+        print(f'Updating from {build} to {latest_build}')
+
+        new_f = download_latest_purpur()
+
+        # Remove old file
+        log_jar = f'logs/{datetime.today().strftime("%Y-%m-%d")}-{f}'
+        shutil.move(f, log_jar)
+        print(f'Old jar {f} moved to {log_jar}')
+
+        return new_f
+
+
+if __name__ == '__main__':
+
+    # Find server jar
+    jar = ''
+    for f in os.listdir('.'):
+        if not f.endswith('.jar'):
+            continue
+
+        ver = version_re.findall(f)
+        if any(k in f for k in ['craftbukkit', 'spigot', 'paper', 'purpur']) or len(ver) != 0:
+            jar = f
+            break
+
+    jar = update(jar, version_re.findall(jar))
+
+    # Auto Restart
+    while True:
+        os.system(f'{JAVA} -Xmx{MAX_RAM} -Xms{MIN_RAM} -jar {jar} nogui')
+
+        print('Server stopped, restarting in 5s\nPress any key to stop the server.')
+        i, o, e = select.select([sys.stdin], [], [], 5)
+        if i:
+            print('Server stops.')
+            exit(0)
diff --git a/requirements.txt b/requirements.txt
index 4133d8d..10ab1b2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,3 +15,5 @@ Pillow~=8.4.0
 numpy~=1.21.4
 matplotlib~=3.5.1
 tweepy~=4.4.0
+
+hypy-utils==1.0.2