package service

import (
	"fmt"
	"server/dao"
	"server/logger"
	"server/modbus"
	"server/model"
	"server/utils"
)

func SaveData(data []dao.Region) error {
	if len(data) == 0 {
		return fmt.Errorf("数据不能为空")
	}
	err := utils.SaveData("static/data.json", data)
	if err != nil {
		return err
	}
	// Remove the redundant return err statement.
	return nil // Return nil to indicate success
}

func DeviceLoopSwitch(deviceLoop dao.DeviceLoop) error {
	data := modbus.DeviceLoopSwitch(deviceLoop.ID, deviceLoop.State)
	if model.ConnectionMap[deviceLoop.DeviceId] == nil {
		return fmt.Errorf("设备连接丢失")
	}
	_, dev, _ := utils.GetDataByDeviceId(deviceLoop.DeviceId)
	if dev.State == 0 {
		return fmt.Errorf("设备离线无法操作")
	}

	err := utils.WriteDevice(dev.Sn, data, model.ConnectionMap[deviceLoop.DeviceId])
	if err != nil {
		fmt.Printf("Write device error: %v\n", err)
		return err
	}
	return nil
}
func DeviceSwitch(req model.DeviceRequest) error {
	data := modbus.DeviceSwitch(req.Device.LoopNumber, req.State)
	if model.ConnectionMap[req.Device.Sn] == nil {
		return fmt.Errorf("设备连接丢失")
	}
	err := utils.WriteDevice(req.Device.Sn, data, model.ConnectionMap[req.Device.Sn])
	if err != nil {
		logger.Get().Errorf("Write device error: %v\n", err)
		return err
	}
	return nil
}

func DeviceBatchSwitch(req model.DevicesRequest) error {
	for _, device := range req.Devices {
		if device.State == 0 {
			continue
		}
		data := modbus.DeviceSwitch(device.LoopNumber, req.State)
		if model.ConnectionMap[device.Sn] == nil {
			return fmt.Errorf("设备连接丢失")
		}
		err := utils.WriteDevice(device.Sn, data, model.ConnectionMap[device.Sn])
		if err != nil {
			fmt.Printf("Write device error: %v\n", err)
			return err
		}
	}
	return nil
}

// GetOnlineDevice 获取在线设备 总共设备  在线率
func GetOnlineDevice() (total, online int) {
	devices, err := utils.GetOnlineDevices()
	if err != nil {
		logger.Get().Errorf("GetOnlineDevices err = %s\n", err.Error())
		return
	}
	allDevices, err := utils.GetAllDevices()
	if err != nil {
		logger.Get().Errorf("GetAllDevices err = %s\n", err.Error())
		return
	}
	return len(allDevices), len(devices)
}

func GetSunDevices() (devices []dao.Device, err error) {
	allDevices, err := utils.GetAllDevices()
	if err != nil {
		return nil, err
	}
	for _, device := range allDevices {
		if device.IsSun {
			devices = append(devices, device)
		}
	}
	return
}

func UpdateRegisterAddress(deviceId string) error {
	err := utils.WriteDevice(deviceId, modbus.UpdateRegisterAddress(), model.ConnectionMap[deviceId])
	if err != nil {
		logger.Get().Errorf("UpdateRegisterAddress error: %v\n", err)
		return err
	}
	return nil
}