package cmd

import (
	"fmt"
	"log"
	"net/url"
	"os"
	"strings"

	"github.com/jamesnetherton/m3u"
	"github.com/pierre-emmanuelJ/iptv-proxy/pkg/config"

	"github.com/pierre-emmanuelJ/iptv-proxy/pkg/routes"

	homedir "github.com/mitchellh/go-homedir"
	"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:   "iptv-proxy",
	Short: "A brief description of your application",
	Run: func(cmd *cobra.Command, args []string) {
		m3uURL := viper.GetString("m3u-url")
		playlist, err := m3u.Parse(m3uURL)
		if err != nil {
			log.Fatal(err)
		}

		remoteHostURL, err := url.Parse(m3uURL)
		if err != nil {
			log.Fatal(err)
		}

		conf := &config.ProxyConfig{
			Playlist: &playlist,
			HostConfig: &config.HostConfiguration{
				Hostname: viper.GetString("hostname"),
				Port:     viper.GetInt64("port"),
			},
			RemoteURL:      remoteHostURL,
			XtreamUser:     viper.GetString("xtream-user"),
			XtreamPassword: viper.GetString("xtream-password"),
			XtreamBaseURL:  viper.GetString("xtream-base-url"),
			User:           viper.GetString("user"),
			Password:       viper.GetString("password"),
		}

		if e := routes.Serve(conf); e != nil {
			log.Fatal(e)
		}
	},
}

// 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() {
	if err := rootCmd.Execute(); err != nil {
		fmt.Println(err)
		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, "iptv-proxy-config", "C", "config file (default is $HOME/.iptv-proxy.yaml)")
	rootCmd.Flags().String("m3u-url", "http://example.com/iptv.m3u", "iptv m3u file")
	rootCmd.Flags().Int64("port", 8080, "Port to expose the IPTVs endpoints")
	rootCmd.Flags().String("hostname", "", "Hostname or IP to expose the IPTVs endpoints")
	rootCmd.Flags().String("user", "usertest", "user UNSAFE(temp auth to access proxy)")
	rootCmd.Flags().String("password", "passwordtest", "password UNSAFE(auth to access m3u proxy and xtream proxy)")
	rootCmd.Flags().String("xtream-user", "xtream_user", "Xtream-code user login")
	rootCmd.Flags().String("xtream-password", "xtream_password", "Xtream-code password login")
	rootCmd.Flags().String("xtream-base-url", "http://expample.tv:8080", "Xtream-code base url")

	if e := viper.BindPFlags(rootCmd.Flags()); e != nil {
		log.Fatal("error binding PFlags to viper")
	}
}

// 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 := homedir.Dir()
		if err != nil {
			fmt.Println(err)
			os.Exit(1)
		}

		// Search config in home directory with name ".iptv-proxy" (without extension).
		viper.AddConfigPath(home)
		viper.AddConfigPath(".")
		viper.SetConfigName(".iptv-proxy")
	}

	viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))

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

	// If a config file is found, read it in.
	if err := viper.ReadInConfig(); err == nil {
		fmt.Println("Using config file:", viper.ConfigFileUsed())
	}
}