package main

import (
	"fmt"
	"os"
)

func main() {
	args := os.Args[1:]
	isSilent := hasSilentFlag(args)
	if !isSilent {
		printVersionHeader(args)
	}

	previousStderr := os.Stderr
	var nullOutput *os.File
	if isSilent {
		var err error
		nullOutput, err = os.OpenFile(os.DevNull, os.O_WRONLY, 0)
		if err != nil {
			fmt.Fprintln(previousStderr, err)
			os.Exit(1)
		}
		os.Stderr = nullOutput
	}

	err := rootCmd.Execute()
	if nullOutput != nil {
		os.Stderr = previousStderr
		nullOutput.Close()
	}
	if err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
}

func hasSilentFlag(args []string) bool {
	for _, arg := range args {
		if arg == "--silent" || arg == "--silent=true" {
			return true
		}
	}
	return false
}