refac: password and code hashing & checking go through a domain hasher interface used by the use cases instead of bcrypt in the user repository and the auth handler

internal/infrastructure/hashing/BcryptHasher.go

@@ -0,0 +1,29 @@
+package hashing
+
+import (
+	"RenewCMS/internal/domain/hash"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+const bcryptCost = 12
+
+type BcryptHasher struct{}
+
+func NewBcryptHasher() *BcryptHasher {
+	return &BcryptHasher{}
+}
+
+func (b *BcryptHasher) Hash(value string) (string, error) {
+	hashed, err := bcrypt.GenerateFromPassword([]byte(value), bcryptCost)
+	if err != nil {
+		return "", err
+	}
+	return string(hashed), nil
+}
+
+func (b *BcryptHasher) Compare(hashed string, value string) error {
+	return bcrypt.CompareHashAndPassword([]byte(hashed), []byte(value))
+}
+
+var _ hash.Hasher = &BcryptHasher{}