86 lines
2.6 KiB
Python
86 lines
2.6 KiB
Python
"""High-level switch service selecting native/mock backend driver."""
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from __future__ import annotations
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from dataclasses import dataclass, field
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from python_app.hardware_full.switch_drivers import (
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H7992Driver,
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HMC349ADriver,
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MockSwitchDriver,
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SwitchDriverProtocol,
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)
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@dataclass(slots=True)
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class SwitchService:
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"""Facade around concrete switch drivers."""
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name: str
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positions: int
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mode: str = "mock"
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driver: str = "h7992"
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gpio_chip: str = "/dev/gpiochip0"
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pin_a: int = 17
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pin_b: int = 27
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invert_logic: bool = False
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default_position: int = 0
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_driver: SwitchDriverProtocol = field(init=False, repr=False)
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def __post_init__(self) -> None:
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"""Create underlying driver based on configured mode and type."""
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self._driver = self._build_driver()
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def open(self) -> None:
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"""Open underlying switch driver resources."""
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self._driver.open()
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def close(self) -> None:
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"""Close underlying switch driver resources."""
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self._driver.close()
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def switch_to(self, position: int) -> None:
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"""Switch to requested position."""
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self._driver.switch_to(position)
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@property
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def current_position(self) -> int:
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"""Return current switch position reported by backend driver."""
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return self._driver.current_position
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def _build_driver(self) -> SwitchDriverProtocol:
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"""Instantiate concrete driver according to configured mode and driver kind."""
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mode = self.mode.strip().lower()
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driver_kind = self.driver.strip().lower()
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if mode == "mock":
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return MockSwitchDriver(
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name=self.name,
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positions=self.positions,
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default_position=self.default_position,
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)
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if mode != "native":
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raise RuntimeError(f"Unsupported switch mode: {self.mode}")
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if driver_kind == "h7992":
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return H7992Driver(
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name=self.name,
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positions=self.positions,
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default_position=self.default_position,
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gpio_chip=self.gpio_chip,
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pin_a=self.pin_a,
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pin_b=self.pin_b,
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)
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if driver_kind == "hmc349a":
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return HMC349ADriver(
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name=self.name,
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positions=self.positions,
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default_position=self.default_position,
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gpio_chip=self.gpio_chip,
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pin_a=self.pin_a,
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invert_logic=self.invert_logic,
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)
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raise RuntimeError(f"Unsupported switch driver: {self.driver}")
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