package fingerprint

import (
	"crypto/sha256"
	"fmt"
	"strings"
)

// Hash computes a stable SHA-256 fingerprint from normalized frames.
func Hash(frames []NormalizedFrame) string {
	var parts []string
	for _, f := range frames {
		parts = append(parts, f.Function+"\x00"+f.File)
	}
	data := strings.Join(parts, "\n")
	sum := sha256.Sum256([]byte(data))
	return fmt.Sprintf("%x", sum)
}