// Package executor exec commands
package executor

import (
	"fmt"
	"os"
	"os/exec"
	"strings"
)

func Exec(line string) {
	line = strings.TrimSpace(line)
	if line == "" {
		return
	}

	args := strings.Fields(line)
	command := args[0]
	commandArgs := args[1:]

	if command == "exit" {
		fmt.Println("Bye Bye my small deer :3")
		os.Exit(0)
	}

	if command == "cd" {
		if len(commandArgs) < 1 {
			fmt.Fprintln(os.Stderr, "cd: argument was skipped")
			return
		}
		if err := os.Chdir(commandArgs[0]); err != nil {
			fmt.Fprintln(os.Stderr, err)
		}
		return
	}

	cmd := exec.Command(command, commandArgs...)
	cmd.Stdin = os.Stdin
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr

	if err := cmd.Run(); err != nil {
		fmt.Fprintf(os.Stderr, "Execution error: %v\n", err)
	}
}