package main

import "errors"

var ErrCfgVerifyFailed = errors.New("config verify failed")

type ConfigDefClass struct {
	Serial struct {
		ComPort  string  `toml:"port"`
		Baudrate int     `toml:"baud"`
		DataBits int     `toml:"data_bits"`
		StopBits float32 `toml:"stop_bits"`
		Parity   string  `toml:"parity"`
	} `toml:"serial"`
	Performance struct {
		TxBufferSize int `toml:"tx_buf_size"`
		RxBufferSize int `toml:"rx_buf_size"`
	} `toml:"perf"`
	Server struct {
		Mode      string `toml:"mode"`
		TCPConfig struct {
			Bind string `toml:"bind"`
		} `toml:"tcp"`
	} `toml:"server"`
}

func ConfigVerifyAndFillDefault() error {
	// TODO: process default config
	if Config.Serial.ComPort == "" {
		App.Error("no serial port specified.")
		return ErrCfgVerifyFailed
	}
	if Config.Serial.Baudrate <= 0 {
		App.Error("baudrate should more than 0.")
		return ErrCfgVerifyFailed
	}
	if Config.Serial.DataBits == 0 {
		Config.Serial.DataBits = 8
	}
	if Config.Serial.StopBits == 0 {
		Config.Serial.StopBits = 1
	}
	if Config.Serial.Parity == "" {
		Config.Serial.Parity = "N"
	}
	if Config.Performance.TxBufferSize <= 0 {
		Config.Performance.TxBufferSize = 2048
	}
	if Config.Performance.RxBufferSize <= 0 {
		Config.Performance.RxBufferSize = 2048
	}
	return nil
}