package mapping

import (
	"crypto/sha1"
	"encoding/hex"
	"strings"
)

func GenerateCheckID(sourceSystem, dataType, sourceRecordID, version string) string {
	parts := []string{sourceSystem, dataType, sourceRecordID}
	if version != "" {
		parts = append(parts, version)
	}
	sum := sha1.Sum([]byte(strings.Join(parts, "|")))
	return hex.EncodeToString(sum[:])[:20]
}