add webui

config.py

@@ -0,0 +1,68 @@
+"""
+Load settings from config.ini (or config.example.ini if no config.ini).
+Paths are relative to the project root (directory containing config.py).
+"""
+import os
+from configparser import ConfigParser
+
+_ROOT = os.path.dirname(os.path.abspath(__file__))
+_CONFIG_DIR = _ROOT
+_CONFIG_FILE = os.path.join(_CONFIG_DIR, 'config.ini')
+_EXAMPLE_FILE = os.path.join(_CONFIG_DIR, 'config.example.ini')
+
+
+def _get_parser():
+    p = ConfigParser()
+    if os.path.isfile(_CONFIG_FILE):
+        p.read(_CONFIG_FILE, encoding='utf-8')
+    elif os.path.isfile(_EXAMPLE_FILE):
+        p.read(_EXAMPLE_FILE, encoding='utf-8')
+    return p
+
+
+def get(section, key, fallback=None, type_=str):
+    p = _get_parser()
+    if not p.has_section(section) or not p.has_option(section, key):
+        return fallback
+    raw = p.get(section, key)
+    if type_ is int:
+        return int(raw)
+    if type_ is float:
+        return float(raw)
+    if type_ is bool:
+        return raw.strip().lower() in ('1', 'true', 'yes', 'on')
+    return raw
+
+
+# Plotter
+def plotter_port():
+    return get('plotter', 'port', fallback='/dev/ttyUSB0')
+
+
+def plotter_baudrate():
+    return get('plotter', 'baudrate', fallback=9600, type_=int)
+
+
+def plotter_timeout():
+    return get('plotter', 'timeout', fallback=15, type_=int)
+
+
+def plotter_center_at_origin():
+    return get('plotter', 'center_at_origin', fallback=False, type_=bool)
+
+
+# Web UI
+def webui_host():
+    return get('webui', 'host', fallback='0.0.0.0')
+
+
+def webui_port():
+    return get('webui', 'port', fallback=5000, type_=int)
+
+
+def webui_max_upload_mb():
+    return get('webui', 'max_upload_mb', fallback=16, type_=int)
+
+
+def webui_secret_key():
+    return os.environ.get('SECRET_KEY') or get('webui', 'secret_key', fallback='change-me-in-production')