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KX-Bridge-Release/config_loader.py
walterioo 0e1d46ee7f
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fix: isolate filament profiles per printer in multi-printer bridge (#74)
Per-printer [filament_profiles_<id>] sections so configuring one printer no
longer overwrites another (read-fallback to the legacy global section keeps
single-printer setups unchanged). Dropdown/switch links now navigate to each
printer's own bridge_url. Adds pytest coverage and a CHANGELOG entry.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-30 07:13:10 +02:00

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"""
config_loader.py lädt Verbindungsparameter aus config/config.ini (primär)
oder .env (Fallback / Migration).
Umgebungsvariablen haben immer Vorrang.
"""
import os
import sys
import pathlib
import configparser
from typing import Optional
_BASE = pathlib.Path(sys.executable).parent if getattr(sys, "frozen", False) else pathlib.Path(__file__).parent
CONFIG_SECTION_CONNECTION = "connection"
CONFIG_SECTION_PRINT = "print"
CONFIG_SECTION_BRIDGE = "bridge"
CONFIG_SECTION_SPOOLMAN = "spoolman"
def _find_config_file() -> pathlib.Path | None:
for base in (_BASE, _BASE.parent):
p = base / "config" / "config.ini"
if p.is_file():
return p
return None
def _find_env_file() -> pathlib.Path | None:
for base in (_BASE, _BASE.parent):
p = base / ".env"
if p.is_file():
return p
return None
def _load_env_file(path: pathlib.Path):
"""Lädt .env-Datei als Fallback setzt nur Keys die noch nicht in os.environ sind."""
with open(path, encoding="utf-8") as f:
for line in f:
line = line.strip()
if not line or line.startswith("#") or "=" not in line:
continue
key, _, val = line.partition("=")
key = key.strip()
val = val.strip()
if key and key not in os.environ:
os.environ[key] = val
def _load_config_file(path: pathlib.Path):
"""Lädt config.ini und setzt Keys in os.environ (nur wenn nicht bereits gesetzt)."""
cfg = configparser.ConfigParser()
cfg.read(path, encoding="utf-8")
mapping = {
"PRINTER_IP": (CONFIG_SECTION_CONNECTION, "printer_ip"),
"MQTT_PORT": (CONFIG_SECTION_CONNECTION, "mqtt_port"),
"MQTT_USERNAME": (CONFIG_SECTION_CONNECTION, "username"),
"MQTT_PASSWORD": (CONFIG_SECTION_CONNECTION, "password"),
"MODE_ID": (CONFIG_SECTION_CONNECTION, "mode_id"),
"DEVICE_ID": (CONFIG_SECTION_CONNECTION, "device_id"),
"DEFAULT_AMS_SLOT": (CONFIG_SECTION_PRINT, "default_ams_slot"),
"AUTO_LEVELING": (CONFIG_SECTION_PRINT, "auto_leveling"),
"CAMERA_ON_PRINT": (CONFIG_SECTION_PRINT, "camera_on_print"),
"WEB_UPLOAD_WARNING": (CONFIG_SECTION_PRINT, "web_upload_warning"),
"PRINT_START_DIALOG": (CONFIG_SECTION_PRINT, "print_start_dialog"),
"BRIDGE_PRINTER_NAME": (CONFIG_SECTION_BRIDGE, "printer_name"),
"SPOOLMAN_SERVER": (CONFIG_SECTION_SPOOLMAN, "server"),
"SPOOLMAN_SYNC_RATE": (CONFIG_SECTION_SPOOLMAN, "sync_rate"),
}
for env_key, (section, option) in mapping.items():
if env_key not in os.environ:
try:
val = cfg.get(section, option)
if val:
os.environ[env_key] = val
except (configparser.NoSectionError, configparser.NoOptionError):
pass
# Backward compatibility: old key FILE_READY_DIALOG → PRINT_START_DIALOG
if "PRINT_START_DIALOG" not in os.environ:
try:
legacy = cfg.get(CONFIG_SECTION_PRINT, "file_ready_dialog")
if legacy:
os.environ["PRINT_START_DIALOG"] = legacy
except (configparser.NoSectionError, configparser.NoOptionError):
pass
if "PRINT_START_DIALOG" not in os.environ and "FILE_READY_DIALOG" in os.environ:
os.environ["PRINT_START_DIALOG"] = os.environ["FILE_READY_DIALOG"]
def migrate_env_to_config(env_path: pathlib.Path, config_path: pathlib.Path):
"""Einmalige Migration: .env → config.ini anlegen."""
env_vals: dict[str, str] = {}
with open(env_path, encoding="utf-8") as f:
for line in f:
line = line.strip()
if not line or line.startswith("#") or "=" not in line:
continue
k, _, v = line.partition("=")
env_vals[k.strip()] = v.strip()
config_path.parent.mkdir(parents=True, exist_ok=True)
cfg = configparser.ConfigParser()
cfg[CONFIG_SECTION_CONNECTION] = {
"printer_ip": env_vals.get("PRINTER_IP", ""),
"mqtt_port": env_vals.get("MQTT_PORT", "9883"),
"username": env_vals.get("MQTT_USERNAME", ""),
"password": env_vals.get("MQTT_PASSWORD", ""),
"mode_id": env_vals.get("MODE_ID", ""),
"device_id": env_vals.get("DEVICE_ID", ""),
}
cfg[CONFIG_SECTION_PRINT] = {
"default_ams_slot": env_vals.get("DEFAULT_AMS_SLOT", "auto"),
"auto_leveling": env_vals.get("AUTO_LEVELING", "1"),
"camera_on_print": env_vals.get("CAMERA_ON_PRINT", "0"),
"web_upload_warning": env_vals.get("WEB_UPLOAD_WARNING", "1"),
}
cfg[CONFIG_SECTION_BRIDGE] = {
"poll_interval": "3",
}
with open(config_path, "w", encoding="utf-8") as f:
f.write("# KX-Bridge Konfigurationsdatei\n")
f.write("# Automatisch migriert aus .env\n\n")
cfg.write(f)
def find_config_path() -> pathlib.Path:
"""Gibt den Pfad zur config.ini zurück (auch wenn sie noch nicht existiert)."""
for base in (_BASE, _BASE.parent):
config_dir = base / "config"
if config_dir.is_dir():
return config_dir / "config.ini"
return _BASE / "config" / "config.ini"
# ─── Laden ───────────────────────────────────────────────────────────────────
_config_path = _find_config_file()
_env_path = _find_env_file()
if _config_path:
_load_config_file(_config_path)
elif _env_path:
# Kein config.ini vorhanden → aus .env migrieren
_target = find_config_path()
migrate_env_to_config(_env_path, _target)
_load_config_file(_target)
_config_path = _target
def list_printers() -> list[dict]:
"""Liest alle [printer_N]-Sektionen aus config.ini.
Jede Sektion kann folgende Keys haben:
name, printer_ip, mqtt_port, username, password, mode_id, device_id,
bridge_url, default_ams_slot, auto_leveling
Gibt eine leere Liste zurück wenn keine [printer_N]-Sektionen vorhanden sind
(Single-Printer-Betrieb via [connection]).
"""
path = _find_config_file()
if not path:
return []
cfg = configparser.ConfigParser()
cfg.read(path, encoding="utf-8")
printers: list[dict] = []
idx = 1
while True:
section = f"printer_{idx}"
if not cfg.has_section(section):
break
p = dict(cfg[section])
p.setdefault("id", str(idx))
if "mqtt_port" in p:
try:
p["mqtt_port"] = int(p["mqtt_port"])
except ValueError:
p["mqtt_port"] = 9883
printers.append(p)
idx += 1
return printers
def _filament_section(printer_id: Optional[str] = None) -> str:
"""Section name holding a printer's filament-profile mapping.
Multi-printer (one bridge, N printers): each printer keeps its own
``[filament_profiles_<id>]`` section so the mappings cannot overwrite each
other. ``printer_id is None`` (single-printer / legacy callers) maps to the
original global ``[filament_profiles]`` section — full backward compatibility.
"""
pid = str(printer_id).strip() if printer_id is not None else ""
if pid and pid != "0":
return f"filament_profiles_{pid}"
return "filament_profiles"
def list_filament_profiles(printer_id: Optional[str] = None) -> dict[int, dict]:
"""Liest die [filament_profiles]-Sektion aus config.ini.
With ``printer_id`` set, reads the per-printer ``[filament_profiles_<id>]``
section and falls back to the legacy global ``[filament_profiles]`` while
that printer has no own section yet.
Format pro AMS-Slot — primärer Selector ist (vendor, name), die `id` wird
aus der orca_filaments.json beim Speichern nachgeschlagen und mitgeführt
(als Hint für OrcaSlicer; das Orca-Datenmodell hat ~136 Profile mit
derselben filament_id wie 'OGFL99', d.h. die ID ist nicht eindeutig):
[filament_profiles]
slot_0_vendor = Polymaker
slot_0_name = PolyTerra PLA
slot_0_id = OGFL01
Gibt einen Dict {slot_index: {"id": ..., "vendor": ..., "name": ...}}
zurück. Leere/fehlende Slots werden NICHT aufgenommen — das Default-Mapping
(per filament_type) in der Bridge bleibt dann aktiv.
Backwards-Kompat: alte Configs mit nur (vendor, id) bleiben lesbar; `name`
fehlt dann und der Aufrufer kann optional aus der orca_filaments.json
rekonstruieren.
"""
path = _find_config_file()
if not path:
return {}
cfg = configparser.ConfigParser()
cfg.read(path, encoding="utf-8")
section = _filament_section(printer_id)
if not cfg.has_section(section):
section = "filament_profiles" # fallback: legacy global section
if not cfg.has_section(section):
return {}
result: dict[int, dict] = {}
for key, value in cfg.items(section):
# Erwartet: slot_<idx>_id oder slot_<idx>_vendor oder slot_<idx>_name
if not key.startswith("slot_"):
continue
parts = key.split("_", 2)
if len(parts) < 3:
continue
try:
slot_idx = int(parts[1])
except ValueError:
continue
field = parts[2]
if field not in ("id", "vendor", "name"):
continue
if not value.strip():
continue
result.setdefault(slot_idx, {})[field] = value.strip()
return result
def save_filament_profiles(profiles: dict[int, dict], printer_id: Optional[str] = None) -> bool:
"""Schreibt die übergebenen Slot-Profile in die [filament_profiles]-
Sektion der config.ini. Existierende Einträge werden komplett ersetzt.
profiles: {slot_index: {"id": "OGFL01", "vendor": "Polymaker", "name": "PolyTerra PLA"}}
Mindestens vendor+name müssen gesetzt sein; id ist optional (Hint).
With ``printer_id`` set, writes the per-printer ``[filament_profiles_<id>]``
section only — other printers and the legacy global section are untouched.
"""
path = _find_config_file()
if not path:
return False
cfg = configparser.ConfigParser()
cfg.read(path, encoding="utf-8")
section = _filament_section(printer_id)
# visible_vendors (Issue #41) ist kein Slot-Mapping — beim Ersetzen der
# Sektion erhalten, sonst geht der Vendor-Filter beim Slot-Save verloren.
# First save of a per-printer section inherits the legacy global filter.
preserved_vendors = None
if cfg.has_option(section, "visible_vendors"):
preserved_vendors = cfg.get(section, "visible_vendors")
elif cfg.has_option("filament_profiles", "visible_vendors"):
preserved_vendors = cfg.get("filament_profiles", "visible_vendors")
if cfg.has_section(section):
cfg.remove_section(section)
if profiles or preserved_vendors:
cfg[section] = {}
if preserved_vendors:
cfg[section]["visible_vendors"] = preserved_vendors
for slot_idx in sorted(profiles.keys()):
entry = profiles[slot_idx] or {}
if entry.get("vendor"):
cfg[section][f"slot_{slot_idx}_vendor"] = entry["vendor"]
if entry.get("name"):
cfg[section][f"slot_{slot_idx}_name"] = entry["name"]
if entry.get("id"):
cfg[section][f"slot_{slot_idx}_id"] = entry["id"]
with open(path, "w", encoding="utf-8") as f:
cfg.write(f)
return True
def list_visible_vendors(printer_id: Optional[str] = None) -> list[str]:
"""Liest [filament_profiles] visible_vendors (komma-separiert) aus config.ini.
Vendor-Sichtbarkeitsfilter für das Slot-Profil-Dropdown (Issue #41 Option A).
Leere Liste = keine Einschränkung (rückwärtskompatibel: alle Vendoren).
With ``printer_id`` set, reads the per-printer section and falls back to the
legacy global ``[filament_profiles]`` filter.
"""
path = _find_config_file()
if not path:
return []
cfg = configparser.ConfigParser()
cfg.read(path, encoding="utf-8")
section = _filament_section(printer_id)
if not cfg.has_option(section, "visible_vendors"):
section = "filament_profiles" # fallback: legacy global section
if not cfg.has_option(section, "visible_vendors"):
return []
raw = cfg.get(section, "visible_vendors")
return [v.strip() for v in raw.split(",") if v.strip()]
def save_visible_vendors(vendors: list[str], printer_id: Optional[str] = None) -> bool:
"""Schreibt visible_vendors in [filament_profiles], ohne die Slot-Mappings
(slot_N_*) zu verlieren. Leere Liste entfernt den Key wieder.
With ``printer_id`` set, writes the per-printer section. When that section is
created here for the first time, the slot mappings are seeded from the legacy
global section so they are not orphaned by the read-fallback in
``list_filament_profiles``."""
path = _find_config_file()
if not path:
return False
cfg = configparser.ConfigParser()
cfg.read(path, encoding="utf-8")
section = _filament_section(printer_id)
if not cfg.has_section(section):
cfg.add_section(section)
if section != "filament_profiles" and cfg.has_section("filament_profiles"):
for key, value in cfg.items("filament_profiles"):
if key.startswith("slot_"):
cfg[section][key] = value
clean = [v.strip() for v in (vendors or []) if v and v.strip()]
if clean:
cfg[section]["visible_vendors"] = ", ".join(clean)
elif cfg.has_option(section, "visible_vendors"):
cfg.remove_option(section, "visible_vendors")
with open(path, "w", encoding="utf-8") as f:
cfg.write(f)
return True
def get(key: str, default: str = "") -> str:
return os.environ.get(key, default)
# Häufig verwendete Shortcuts
PRINTER_IP = get("PRINTER_IP", "")
MQTT_PORT = int(get("MQTT_PORT", "9883"))
USERNAME = get("MQTT_USERNAME", "")
PASSWORD = get("MQTT_PASSWORD", "")
MODE_ID = get("MODE_ID", "")
DEVICE_ID = get("DEVICE_ID", "")
DEFAULT_AMS_SLOT = get("DEFAULT_AMS_SLOT", "auto")
AUTO_LEVELING = int(get("AUTO_LEVELING","1"))
CAMERA_ON_PRINT = int(get("CAMERA_ON_PRINT","0"))
WEB_UPLOAD_WARNING = int(get("WEB_UPLOAD_WARNING", "1"))
PRINT_START_DIALOG = int(get("PRINT_START_DIALOG", get("FILE_READY_DIALOG", "1")))
SPOOLMAN_SERVER = get("SPOOLMAN_SERVER", "")
SPOOLMAN_SYNC_RATE = int(get("SPOOLMAN_SYNC_RATE", "0"))