Add part that dynamically builds and sets up server

build_server.py

@@ -0,0 +1,44 @@
+import os
+import config
+
+def rewriter(file_name):
+    """Create a decorator that rewrites a file based on given settings."""
+
+    def exec(func):
+        """Rewrite a file"""
+        new_lines = []
+
+        info_to_remember = {}
+        line_no = 0
+
+        with open(file_name, 'r', encoding='utf-8') as open_file:
+            for line in open_file:
+                line_no += 1
+                new_line = func(line, line_no, data=info_to_remember)
+                new_lines.append(new_line)
+        
+        with open(file_name, 'w', encoding='utf-8') as write_file:
+            for line in new_lines:
+                write_file.write(line)
+    return exec
+
+@rewriter('eula.txt')
+def confirm_eula(line : str, line_no : int, data):
+    """Confirm the Minecraft EULA"""
+    if os.getenv('EULA') is None or os.getenv('EULA').lower() != 'true':
+        return line
+    else:
+        return line.replace('eula=false', 'eula=true')
+
+@rewriter('server.properties')
+def fill_in_server_settings(line : str, line_no : int, data):
+    """Set up the server based on our chosen properties"""
+    if line.strip().startswith('#'):
+        return line
+    
+    value = line.split('=')[0]
+
+    if value in config.SERVER_SETTINGS:
+        return value + '=' + str(config.SERVER_SETTINGS[value]) + '\n'
+    else:
+        return line

config.py

@@ -1,7 +1,11 @@
+import os
+
 # Minecraft bridge credentials
-MATRIX_HOMESERVER = "https://homeserv.er"
-MATRIX_USERNAME   = "@bridge_username:homeserv.er"
-MATRIX_PASSWORD   = "bridge_password"
+MATRIX_HOMESERVER = os.getenv('MATRIX_HOMESERVER')  or "https://homeserv.er"
+MATRIX_USERNAME   = os.getenv('MATRIX_USERNAME')    or "@bridge_username:homeserv.er"
+MATRIX_PASSWORD   = os.getenv('MATRIX_PASSWORD')    or "bridge_password"
+
+SERVER_IP = os.getenv('SERVER_ADDRESS') or 'unknown ip'
 
 # Matrix users who are allowed to run OP commands in Minecraft through Matrix
 MC_ADMINS = [
@@ -9,6 +13,43 @@ MC_ADMINS = [
     "@_discord_625632515314548736:t2bot.io"     # Bram on Discord (example, feel free to remove)
     # Your username on Matrix
 ]
+if os.getenv('MATRIX_ADMINS') is not None:
+    MC_ADMINS = os.getenv('MATRIX_ADMINS').split(',')
 
 # Matrix channel that the bot should talk to
-MC_CHANNEL = "!channel_id:homeserv.er"
+MC_CHANNEL = os.getenv('MC_CHANNEL') or "!channel_id:homeserv.er"
+
+make_bool = lambda os_value, default_value : default_value if not os_value else (
+    False if os_value.lower() == 'false' else True
+)
+
+SERVER_SETTINGS = {
+    'level-name': os.getenv('WORLD') or 'world',
+    
+    # Server settings
+    'port'          : 25565 if os.getenv('PORT') == None else int(os.getenv('PORT')),
+    'query.port'    : 25565 if os.getenv('PORT') == None else int(os.getenv('PORT')),
+    'max-players'   : 7 if os.getenv('MAX_PLAYERS') == None else int(os.getenv('MAX_PLAYERS')),
+    
+    # Server temperature  >:3
+    'view-distance'         : 10 if os.getenv('RENDER_DISTANCE') == None else int(os.getenv('RENDER_DISTANCE')),
+    'enable-command-block'  : make_bool(os.getenv('COMMAND_BLOCKS'), True),
+    
+    # Environment
+    'allow-nether'      : make_bool(os.getenv('NETHER'),    True),
+    'spawn-npcs'        : make_bool(os.getenv('NPCS'),      True),
+    'spawn-animals'     : make_bool(os.getenv('ANIMALS'),   True),
+    'spawn-monsters'    : make_bool(os.getenv('MONSTERS'),  True),
+    
+    # Gamemode
+    'pvp'       : make_bool(os.getenv('PVP'),       True),
+    'gamemode'  : os.getenv('GAMEMODE') or 'survival',
+    'difficulty': os.getenv('DIFFICULTY') or 'medium',
+    'hardcore'  : make_bool(os.getenv('HARDCORE'),  False),
+    
+    # Grief protection
+    'online-mode'       : make_bool(os.getenv('VERIFY_ACCOUNTS'),   True),
+    'white-list'        : make_bool(os.getenv('WHITELIST'),         True),
+    'enforce-whitelist' : make_bool(os.getenv('WHITELIST'),         True),
+    'spawn-protection'  : 16 if os.getenv('SPAWN_PROTECTION') == None else os.getenv('SPAWN_PROTECTION'),
+}

main.py

@@ -6,6 +6,7 @@ from nio import AsyncClient, MatrixRoom, RoomMessageText
 import mc_wrapper
  
 import config
+import build_server
 
 STARTUP_TIME = time.time()
 

mc_wrapper.py

@@ -5,6 +5,7 @@ import json
 import sys
 import re
 from nbsr import NonBlockingStreamReader as NBSR
+import config
 
 # run the shell as a subprocess:
 p = Popen(sys.argv[1:],
@@ -60,7 +61,7 @@ def process_message(sentence : str) -> Union[str, None]:
         r"\[[\d:]+\] \[Server thread\/INFO\]: Done \(\d+.?\d*s\)! For help, type \"help\"",
         sentence):
         server_live = True
-        return "The Minecraft server is live. The server is reacable at <code>mc.noordstar.me</code>.", "The minecraft server is live. The server is reacable at <code>mc.noordstar.me</code>."
+        return f"The Minecraft server is live. The server is reacable at <code>{config.SERVER_IP}</code>.", f"The minecraft server is live. The server is reacable at <code>{config.SERVER_IP}</code>."
     
     if re.fullmatch(
         r"\[[\d:]+\] \[Server thread\/INFO\]: Stopping server",