package main

import (
	"fmt"
	"os"

	lox "git.geekproject.eu/halfdan/glox/lox"
)

// glox:
//	run		- run a scripts
//	build	- build a binary
//	fmt		- format file
//	sh 		- run interactive shell
func main() {
	if len(os.Args) < 2 {
		usage()
	}

	switch os.Args[1] {
	case "run":
		if len(os.Args) < 3 {
			fmt.Print("glox run: no lox file listed\n")
			os.Exit(2)
		}
		lox.RunFile(os.Args[2])
	case "fmt":
		if len(os.Args) < 3 {
			fmt.Print("glox fmt: no lox file listed\n")
			os.Exit(2)
		}
		lox.RunFormat(os.Args[2])
	case "sh":
		lox.RunPrompt()
	default:
		usage()
	}
}

func usage() {
	fmt.Print("glox is a tool for running Lox code.\n\n")
	fmt.Print("Usage:\n\n")
	fmt.Print("\tglox <command> [arguments]\n\n")
	fmt.Print("The commands are:\n\n")
	fmt.Print("\trun\trun a lox script\n")
	fmt.Print("\tfmt\tformat input file\n")
	fmt.Print("\tsh\tstart interactive shell\n\n")
	os.Exit(2)
}