package core

import (
	"github.com/sirupsen/logrus"
	"github.com/spf13/viper"
)

// This struct represents and holds all configurable parameters
type Configuration struct {
	Collectors struct {
		TcpCollectorPort    string `mapstructure:"porttcp"`
		SerialCollectorPort string `mapstructure:"portserial"`
	} `mapstructure:"Collectors"`
	Webserver struct {
		Port string `mapstructure:"port"`
	} `mapstructure:"webserver"`
	Pipeline struct {
		PublishIntervalMs    int `mapstructure:"publishintervalms"`
		SyncUpdateIntervalMs int `mapstructure:"syncupdateintervalms"`
	} `mapstructure:"pipeline"`
	Debuglevel string `mapstructure:"debuglevel"`
}

// Call this function to load configuration from gpsconfig.yml
func ConfigurationFromFile() *Configuration {
	viper.SetDefault("collectors.porttcp", ":3010")
	viper.SetDefault("collectors.portserial", "/dev/tty.usbmodem14201")
	viper.SetDefault("webserver.port", ":3011")
	viper.SetDefault("pipeline.publishIntervalMs", 50)
	viper.SetDefault("pipeline.syncUpdateIntervalMs", 494)
	viper.SetDefault("debuglevel", "INFO")

	viper.SetConfigName("gpsconfig") // name of config file (without extension)
	viper.SetConfigType("yaml")
	viper.AddConfigPath(".")
	viper.AddConfigPath("./../../")
	if err := viper.ReadInConfig(); err != nil {
		logrus.Warn("couldn't find config file. using standard configuration")
	}

	c := Configuration{}
	if err := viper.Unmarshal(&c); err != nil {
		logrus.Debug("couldn't load config...")
		logrus.Error(err)
	}
	lvl, err := logrus.ParseLevel(c.Debuglevel)
	if err != nil {
		logrus.Error(err)
	}
	logrus.SetLevel(lvl)
	return &c
}