package steamimmich

import (
	"crypto/sha1"
	"fmt"
	"io"
	"os"
)

func hashFiles(assets []assetState) (map[int]string, error) {
	results := make(map[int]string)

	for i, p := range assets {
		f, err := os.Open(p.FilePath)
		if err != nil {
			results[i] = ""
			continue
		}

		h := sha1.New()
		if _, err := io.Copy(h, f); err != nil {
			f.Close()
			return nil, err
		}
		f.Close()

		results[i] = fmt.Sprintf("%x", h.Sum(nil))
	}

	return results, nil
}