package ls

import (
	"bbash/environment"
	"bbash/input_parser"
	"fmt"
	"os"
	"strings"
)

var flagsArray []string = []string{"a ", "help "}
var flagsDictionary map[string]string = map[string]string{"a": "-a shows hidden directories", "help": "-help shows this message"}

func Ls(in input_parser.Input, env *environment.Env, flags string) {
	if flags == "help" || flags == "-help" {
		fmt.Printf("Lists Sources in the current working directory")
		fmt.Printf("Supported flags are")
		for i := 0; i < len(flagsArray); i++ {
			fmt.Println(flagsArray[i] + flagsDictionary[flagsArray[i]])
		} // this prints all flags and their description
	}
	fs, err := os.ReadDir(env.Path)
	if err != nil {
		fmt.Print(fmt.Sprintf("Error opening directory %s", env.Path))
	}
	for _, f := range fs {
		if (f.Name()[0] == '.') && (strings.Contains(flags, "a")) {
			continue
		} // allows for hidden directories
		fmt.Print(f.Name())
		fmt.Println()
	}
}