package cmd

import (
	"fmt"
	"os"

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

var (
	cfgFile    string
	baseURL    string
	username   string
	password   string
	debug      bool
	apiVersion string
)

// rootCmd represents the base command when called without any subcommands
var rootCmd = &cobra.Command{
	Use:   "edge-connect",
	Short: "A CLI tool for managing Edge Connect applications",
	Long: `edge-connect is a command line interface for managing Edge Connect applications
and their instances. It provides functionality to create, show, list, and delete
applications and application instances.`,
}

// Execute adds all child commands to the root command and sets flags appropriately.
func Execute() {
	if err := rootCmd.Execute(); err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
}

func init() {
	cobra.OnInitialize(initConfig)

	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.edge-connect.yaml)")
	rootCmd.PersistentFlags().StringVar(&baseURL, "base-url", "", "base URL for the Edge Connect API")
	rootCmd.PersistentFlags().StringVar(&username, "username", "", "username for authentication")
	rootCmd.PersistentFlags().StringVar(&password, "password", "", "password for authentication")
	rootCmd.PersistentFlags().StringVar(&apiVersion, "api-version", "v2", "API version to use (v1 or v2)")
	rootCmd.PersistentFlags().BoolVar(&debug, "debug", false, "enable debug logging")

	if err := viper.BindPFlag("base_url", rootCmd.PersistentFlags().Lookup("base-url")); err != nil {
		panic(err)
	}
	if err := viper.BindPFlag("username", rootCmd.PersistentFlags().Lookup("username")); err != nil {
		panic(err)
	}
	if err := viper.BindPFlag("password", rootCmd.PersistentFlags().Lookup("password")); err != nil {
		panic(err)
	}
	if err := viper.BindPFlag("api_version", rootCmd.PersistentFlags().Lookup("api-version")); err != nil {
		panic(err)
	}
}

func initConfig() {
	viper.AutomaticEnv()
	viper.SetEnvPrefix("EDGE_CONNECT")
	if err := viper.BindEnv("base_url", "EDGE_CONNECT_BASE_URL"); err != nil {
		panic(err)
	}
	if err := viper.BindEnv("username", "EDGE_CONNECT_USERNAME"); err != nil {
		panic(err)
	}
	if err := viper.BindEnv("password", "EDGE_CONNECT_PASSWORD"); err != nil {
		panic(err)
	}
	if err := viper.BindEnv("api_version", "EDGE_CONNECT_API_VERSION"); err != nil {
		panic(err)
	}

	if cfgFile != "" {
		viper.SetConfigFile(cfgFile)
	} else {
		home, err := os.UserHomeDir()
		if err != nil {
			fmt.Println(err)
			os.Exit(1)
		}

		viper.AddConfigPath(home)
		viper.SetConfigType("yaml")
		viper.SetConfigName(".edge-connect")
	}

	if err := viper.ReadInConfig(); err == nil {
		fmt.Println("Using config file:", viper.ConfigFileUsed())
	}
}