package device

import (
	"errors"
	"fmt"

	"github.com/spf13/viper"
)

// Returns the correct manager for sensor/controller
type Device interface {
	Start() error
	Exit() error
	IsActive() int
	SetDeviceManager(*DeviceManager)
}

func New(bus, addr int, config *viper.Viper) (Device, error) {
	// returns correct device manager by ID
	var err error
	var defaultName string
	var m Device

	switch addr {
	case 97:
		// DO
		defaultName = "DO Sensor"
		m = NewDOManager()
	case 99:
		// pH
		defaultName = "pH Sensor"
		m = NewPHManager()
	case 102:
		// RTD
		defaultName = "RTD Sensor"
		m = NewRTDManager()
	case 256:
		// PWM
		defaultName = "PWM Controller"
		m = NewPWMManager()
	default:
		err = errors.New(fmt.Sprintf("Error: device id %d unrecognized!", addr))
	}
	// setting device manager
	dm := NewDeviceManager(bus, addr, config, defaultName)
	m.SetDeviceManager(dm)
	// setting up gRPC server functionality

	return m, err
}