gomail/config.go

package main

import (
	"io/ioutil"
	"log"

	"gopkg.in/yaml.v3"
)

// Config application configuration
type Config struct {
	Addr    string `yaml:"addr"`
	Path    string `yaml:"path"`
	Account []struct {
		Addr     string `yaml:"addr"`
		Username string `yaml:"username"`
		Password string `yaml:"password"`
	}
	Logger struct {
		Path  string `yaml:"path"`
		Mode  string `yaml:"mode"`
		Level int    `yaml:"level"`
	}
}

// NewConfig - create new config instance from file path
func NewConfig(configFile string) (config *Config) {
	file, err := ioutil.ReadFile(configFile)
	if err != nil {
		log.Fatalf("Error loading yaml config file %v", err)
	}
	if err = yaml.Unmarshal(file, &config); err != nil {
		log.Fatalf("Error Unmarshaling yaml config file %v", err)
	}
	return config
}

// NewFile create new config instance from file
func NewFile(configFile []byte) (config *Config) {
	if err := yaml.Unmarshal(configFile, &config); err != nil {
		log.Fatalf("Error Unmarshaling yaml config file %v", err)
	}
	return config
}