package cmd

import (
	"log"
	"os"

	"github.com/spf13/cobra"
	"github.com/spf13/viper"
)

var cfgFile string

// rootCmd represents the base command when called without any subcommands
var rootCmd = &cobra.Command{
	Use:   "bottin-agenda",
	Short: "Application de distribution d'agendas",
	// Uncomment the following line if your bare application
	// has an action associated with it:
	// 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)

	// Here you will define your flags and configuration settings.
	// Cobra supports persistent flags, which, if defined here,
	// will be global for your application.

	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.bottin-agenda.yaml)")

	// bottin.host
	rootCmd.PersistentFlags().String(
		"bottin-host", "",
		"The host of the bottin instance (config: 'bottin.host')")
	viper.BindPFlag(
		"bottin.host",
		rootCmd.PersistentFlags().Lookup("bottin-host"))
	rootCmd.MarkPersistentFlagRequired("bottin.host")

	// bottin.protocol
	rootCmd.PersistentFlags().String(
		"bottin-protocol", "http",
		"The protocol of the bottin instance (config: 'bottin.protocol')")
	viper.BindPFlag(
		"bottin.protocol",
		rootCmd.PersistentFlags().Lookup("bottin-protocol"))
	rootCmd.MarkPersistentFlagRequired("bottin.protocol")

	// bottin.port
	rootCmd.PersistentFlags().Int(
		"bottin-port", 1312,
		"The port to the bottin instance (config: 'bottin.port')")
	viper.BindPFlag(
		"bottin.port",
		rootCmd.PersistentFlags().Lookup("bottin-port"))
	rootCmd.MarkPersistentFlagRequired("bottin.port")

	// bottin.username
	rootCmd.PersistentFlags().String(
		"bottin-username", "",
		"The username to the bottin instance (config: 'bottin.username')")
	viper.BindPFlag(
		"bottin.username",
		rootCmd.PersistentFlags().Lookup("bottin-username"))
	rootCmd.MarkPersistentFlagRequired("bottin.username")

	// bottin.password
	rootCmd.PersistentFlags().String(
		"bottin-password", "",
		"The password to the bottin instance (config: 'bottin.password')")
	viper.BindPFlag(
		"bottin.password",
		rootCmd.PersistentFlags().Lookup("bottin-password"))
	rootCmd.MarkPersistentFlagRequired("bottin.password")
}

// initConfig reads in config file and ENV variables if set.
func initConfig() {
	if cfgFile != "" {
		// Use config file from the flag.
		viper.SetConfigFile(cfgFile)
	} else {
		// Find home directory.
		home, err := os.UserHomeDir()
		cobra.CheckErr(err)

		// Search config in home directory with name ".bottin-agenda" (without extension).
		viper.AddConfigPath(home)
		viper.SetConfigType("yaml")
		viper.SetConfigName(".bottin-agenda")
	}

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

	// If a config file is found, read it in.
	if err := viper.ReadInConfig(); err == nil {
		log.Printf("Using config file: %s\n", viper.ConfigFileUsed())
	}
}