package main

import (
	"fmt"
	"os"
	"path/filepath"

	"github.com/alexflint/go-arg"

	"git.zorchenhimer.com/zorchenhimer/go-fds"
)

type Arguments struct {
	Input string `arg:"positional,required"`

	Blocks bool `arg:"--blocks"`
}


func main() {
	args := &Arguments{}
	arg.MustParse(args)

	err := run(args)
	if err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
}

func run(args *Arguments) error {
	if args.Blocks {
		file, err := os.Open(args.Input)
		if err != nil {
			return err
		}
		defer file.Close()

		blocks, err := fds.ReadRomBlocks(file, filepath.Ext(args.Input) == ".fds")
		if err != nil {
			return err
		}

		for _, block := range blocks {
			fmt.Println(block.String())
		}

		return nil
	}

	rom, err := fds.ReadRomFile(args.Input)
	if err != nil {
		return err
	}

	fmt.Println(rom.Info())

	return nil
}