package business

import (
	"fmt"
	"time"
)

type SensorType int

const (
	SensorTypeTemperatureHumidity SensorType = 1 // 温湿度传感器
	SensorTypeWaterLeak           SensorType = 2 // 水浸传感器
	SensorTypeSmoke               SensorType = 3 // 烟雾传感器
)

// ModbusConfig Modbus通信配置
type ModbusConfig struct {
	Port           string
	BaudRate       int
	DataBits       int
	StopBits       int
	Parity         string
	Timeout        time.Duration
	RetryCount     int
	RetryDelay     time.Duration
	SensorInterval time.Duration
	BusResetDelay  time.Duration
}
type SensorRegisterConfig struct {
	RegisterAddress uint16
	RegisterCount   uint16
}

// GetSensorTypeDescription 获取传感器类型描述
func GetSensorTypeDescription(sensorType SensorType) string {
	switch sensorType {
	case SensorTypeTemperatureHumidity:
		return "TemperatureHumidityTransducer(1)"
	case SensorTypeWaterLeak:
		return "WaterLeakTransducer(2)"
	case SensorTypeSmoke:
		return "SmokeTransducer(3)"
	default:
		return "UnknownTransducer"
	}
}

// DefaultModbusConfig 获取默认Modbus配置
func DefaultModbusConfig() *ModbusConfig {
	return &ModbusConfig{
		Port:           "/dev/ttyS5",
		BaudRate:       9600,
		DataBits:       8,
		StopBits:       1,
		Parity:         "N",
		Timeout:        3 * time.Second,
		RetryCount:     2,
		RetryDelay:     100 * time.Millisecond,
		SensorInterval: 200 * time.Millisecond,
		BusResetDelay:  50 * time.Millisecond,
	}
}

// GetRegisterConfig 根据传感器类型获取寄存器配置
func GetRegisterConfig(sensorType SensorType) (*SensorRegisterConfig, error) {
	switch sensorType {
	case SensorTypeTemperatureHumidity:
		return &SensorRegisterConfig{RegisterAddress: 0x00, RegisterCount: 2}, nil
	case SensorTypeWaterLeak:
		return &SensorRegisterConfig{RegisterAddress: 0x00, RegisterCount: 1}, nil
	case SensorTypeSmoke:
		return &SensorRegisterConfig{RegisterAddress: 0x03, RegisterCount: 1}, nil
	default:
		return nil, fmt.Errorf("Unsupported sensor types")
	}
}