package cmd

import (
	"log"
	"os"

	"git.dafu.dev/dafu/gomailer/pkg"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"
)

var cfgFile string

var Cfg Config

type Config struct {
	mailserver   gomailer.MailServer `mapstructure:"mailserver"`
	mailsettings gomailer.MailSettings  `mapstructure:"mailsettings"`
}

// rootCmd represents the base command when called without any subcommands
var rootCmd = &cobra.Command{
	Use:   "gomailer",
	Short: "use it to test email templates",
	Long:  ``,
	// Run: func(cmd *cobra.Command, args []string) { },
}

// Execute adds all child commands to the root command and sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
	err := rootCmd.Execute()
	if err != nil {
		os.Exit(1)
	}
}

func init() {
	cobra.OnInitialize(initConfig)
	rootCmd.CompletionOptions.DisableDefaultCmd = true
	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.gomailer.yaml)")

	// rootCmd.PersistentFlags().StringVarP(&Template, "template", "t", "", "Path to html template")
	// viper.BindPFlag("template", rootCmd.PersistentFlags().Lookup("template"))
}

// initConfig reads in config file and ENV variables if set.
func initConfig() {
	if cfgFile != "" {
		viper.SetConfigFile(cfgFile)
	} else {
		viper.AddConfigPath(".")
		viper.SetConfigType("yaml")
		viper.SetConfigName("gomailer")
	}

	viper.AutomaticEnv() // read in environment variables that match

	// If a config file is found, read it in.
	if err := viper.ReadInConfig(); err == nil {
		mserver := &gomailer.MailServer{}
		msettings := &gomailer.MailSettings{}

		if err := viper.UnmarshalKey("mailserver", mserver); err != nil {
			log.Fatal(err)
		}
		if err := viper.UnmarshalKey("mailsettings", msettings); err != nil {
			log.Fatal(err)
		}

		Cfg.mailserver = *mserver
		Cfg.mailsettings = *msettings
	} else {
		generateDefaultConfig()
	}
}

func generateDefaultConfig() {
	// mailserver
	viper.SetDefault("mailserver.Port", 25)
	viper.SetDefault("mailserver.Host", "localhost")
	viper.SetDefault("mailserver.Username", "user")
	viper.SetDefault("mailserver.Password", "pass")
	viper.SetDefault("mailserver.Tls", "notls|mandatory")
	viper.SetDefault("mailserver.Authtype", "nologin|plain|login|cram-md5")
	viper.SetDefault("mailserver.Skipverify", false)
	// mailsettings
	viper.SetDefault("mailsettings.Subject", "subject")
	viper.SetDefault("mailsettings.From", "from@local")
	viper.SetDefault("mailsettings.To", "to@local")
	viper.SetDefault("mailsettings.Cc", "cc@local")
	viper.SetDefault("mailsettings.Template", "email.html")
	viper.SetDefault("mailsettings.Inline", true)

	viper.SafeWriteConfig()
	log.Printf("Writing default config file: " + viper.ConfigFileUsed())
}