Refactor installer

installer/const.py

@@ -0,0 +1,85 @@
+"""Constants and dataclasses."""
+import logging
+import json
+from enum import Enum
+from dataclasses import dataclass, fields, asdict, field
+from typing import Any, Dict, Optional, List
+from pathlib import Path
+
+_DIR = Path(__file__).parent
+_LOGGER = logging.getLogger()
+
+PROGRAM_DIR = _DIR.parent
+LOCAL_DIR = PROGRAM_DIR / "local"
+SETTINGS_PATH = LOCAL_DIR / "settings.json"
+SERVICES_DIR = LOCAL_DIR / "services"
+
+RECORD_SECONDS = 8
+RECORD_RMS_MIN = 30
+
+TITLE = "Wyoming Satellite"
+WIDTH = "75"
+HEIGHT = "20"
+LIST_HEIGHT = "12"
+
+
+class SatelliteType(str, Enum):
+    ALWAYS_STREAMING = "always"
+    VAD = "vad"
+    WAKE = "wake"
+
+
+class WakeWordSystem(str, Enum):
+    OPENWAKEWORD = "openWakeWord"
+    PORCUPINE1 = "porcupine1"
+    SNOWBOY = "snowboy"
+
+
+@dataclass
+class Settings:
+    microphone_device: Optional[str] = None
+    noise_suppression_level: int = 0
+    auto_gain: int = 0
+    mic_volume_multiplier: float = 1.0
+
+    sound_device: Optional[str] = None
+    feedback_sounds: List[str] = field(default_factory=list)
+
+    wake_word_system: Optional[WakeWordSystem] = None
+    wake_word: Dict[WakeWordSystem, str] = field(
+        default_factory=lambda: {
+            WakeWordSystem.OPENWAKEWORD: "ok_nabu",
+            WakeWordSystem.PORCUPINE1: "porcupine",
+            WakeWordSystem.SNOWBOY: "snowboy",
+        }
+    )
+
+    satellite_name: str = "Wyoming Satellite"
+    satellite_type: SatelliteType = SatelliteType.ALWAYS_STREAMING
+
+    debug_enabled: bool = False
+
+    @staticmethod
+    def load() -> "Settings":
+        kwargs: Dict[str, Any] = {}
+
+        if SETTINGS_PATH.exists():
+            _LOGGER.debug("Loading settings from %s", SETTINGS_PATH)
+            with open(SETTINGS_PATH, "r", encoding="utf-8") as settings_file:
+                settings_dict = json.load(settings_file)
+
+            for settings_field in fields(Settings):
+                value = settings_dict.get(settings_field.name)
+                if value is not None:
+                    kwargs[settings_field.name] = value
+
+        return Settings(**kwargs)
+
+    def save(self) -> None:
+        _LOGGER.debug("Saving settings to %s", SETTINGS_PATH)
+
+        settings_dict = asdict(self)
+        SETTINGS_PATH.parent.mkdir(parents=True, exist_ok=True)
+
+        with open(SETTINGS_PATH, "w", encoding="utf-8") as settings_file:
+            json.dump(settings_dict, settings_file, ensure_ascii=False, indent=2)