package ls

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

func Ls(in input_parser.Input, env *environment.Env) {
	flagsArray := []string {
		"a ", 
		"help ",
	}
	flagsDictionary := map[string]string {
		"a": "-a shows hidden directories",
		"help": "-help shows this message",
	}
	if slices.Contains(in.Flags, "help") {
		fmt.Printf("Lists Sources in the current working directory")
		fmt.Printf("Supported flags are:")
		for _, flag := range flagsArray {
			fmt.Println(flag + flagsDictionary[flag])
		} // Print flags and there 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] == '.') && (slices.Contains(in.Flags, "a")) {
			continue
		} // allows for hidden directories
		fmt.Print(f.Name())
		fmt.Println()
	}
}