package infinitecraft

import (
	"fmt"
	"os"
)

func NewMerger(args []string) (*Merger, error) {
	m := Merger{}
	var err error
	if len(args) < 2 {
		//nolint:err113 // Don't care
		return nil, fmt.Errorf("expected at lease 2 arguments. Got %d", len(args))
	}
	fs := make([]*os.File, len(args))
	for idx, pth := range args {
		fs[idx], err = os.Open(pth)
		if err != nil {
			return nil, err
		}
	}
	m.files = fs

	return &m, nil
}