ytdl-web/cmd/root.go

/*
Copyright © 2023 Evan Fiordeliso <evan.fiordeliso@gmail.com>
*/
package cmd

import (
	"fmt"
	"os"

	"github.com/adrg/xdg"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"
	"go.fifitido.net/ytdl-web/web"
	"golang.org/x/exp/slog"
)

var (
	cfgFile string

	rootCmd = &cobra.Command{
		Use:   "ytdl-web",
		Short: "A web frontend for yt-dlp",
		Long: `A longer description that spans multiple lines and likely contains
examples and usage of using your application. For example:

Cobra is a CLI library for Go that empowers applications.
This application is a tool to generate the needed files
to quickly create a Cobra application.`,
		Run: func(cmd *cobra.Command, args []string) {
			if err := web.Serve(); err != nil {
				slog.Error("Error when serving website", slog.String("error", err.Error()))
			}
		},
	}
)

func Execute() {
	err := rootCmd.Execute()
	if err != nil {
		os.Exit(1)
	}
}

func init() {
	cobra.OnInitialize(initConfig)

	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $XDG_CONFIG_HOME/ytdl-web/config.yml)")

	rootCmd.PersistentFlags().IntP("port", "p", 8080, "port to listen on (default is 8080)")
	rootCmd.PersistentFlags().StringP("listen", "l", "127.0.0.1", "address to listen on (default is 127.0.0.1)")
	rootCmd.PersistentFlags().StringP("base-path", "b", "", "the base path, used when behind reverse proxy (default is \"\")")
	rootCmd.PersistentFlags().StringP("ytdlp-path", "y", "yt-dlp", "the path to the yt-dlp binary, used when it is not in $PATH (default is yt-dlp)")

	// trunk-ignore-begin(golangci-lint/errcheck): Ignoring errors
	viper.BindPFlag("port", rootCmd.PersistentFlags().Lookup("port"))
	viper.BindPFlag("listen", rootCmd.PersistentFlags().Lookup("listen"))
	viper.BindPFlag("base_path", rootCmd.PersistentFlags().Lookup("base-path"))
	viper.BindPFlag("ytdlp_path", rootCmd.PersistentFlags().Lookup("ytdlp-path"))
	// trunk-ignore-end(golangci-lint/errcheck)

	viper.SetDefault("port", 8080)
	viper.SetDefault("listen", "127.0.0.1")
	viper.SetDefault("base_path", "")
	viper.SetDefault("ytdlp_path", "yt-dlp")
}

func initConfig() {
	slog.Info("Initializing configuration")

	if cfgFile != "" {
		viper.SetConfigFile(cfgFile)
	} else {
		viper.AddConfigPath(xdg.ConfigHome)
		viper.SetConfigType("yml")
		viper.SetConfigName("config")
	}

	viper.SetEnvPrefix("ytdl")
	viper.AutomaticEnv()

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