Initial commit: Open sourcing all of the Maple Open Technologies code.

cloud/maplefile-backend/internal/usecase/blockedemail/check.go

@@ -0,0 +1,54 @@
+// codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/usecase/blockedemail/check.go
+package blockedemail
+
+import (
+	"context"
+	"strings"
+
+	"go.uber.org/zap"
+
+	"github.com/gocql/gocql"
+	dom_blockedemail "codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/domain/blockedemail"
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/pkg/validation"
+)
+
+type CheckBlockedEmailUseCase interface {
+	Execute(ctx context.Context, userID gocql.UUID, email string) (bool, error)
+}
+
+type checkBlockedEmailUseCaseImpl struct {
+	logger *zap.Logger
+	repo   dom_blockedemail.BlockedEmailRepository
+}
+
+func NewCheckBlockedEmailUseCase(
+	logger *zap.Logger,
+	repo dom_blockedemail.BlockedEmailRepository,
+) CheckBlockedEmailUseCase {
+	logger = logger.Named("CheckBlockedEmailUseCase")
+	return &checkBlockedEmailUseCaseImpl{
+		logger: logger,
+		repo:   repo,
+	}
+}
+
+func (uc *checkBlockedEmailUseCaseImpl) Execute(ctx context.Context, userID gocql.UUID, email string) (bool, error) {
+	// Normalize email
+	normalizedEmail := strings.ToLower(strings.TrimSpace(email))
+
+	isBlocked, err := uc.repo.IsBlocked(ctx, userID, normalizedEmail)
+	if err != nil {
+		uc.logger.Error("Failed to check if email is blocked",
+			zap.Any("error", err),
+			zap.Any("user_id", userID),
+			zap.String("email", validation.MaskEmail(normalizedEmail)))
+		return false, err
+	}
+
+	uc.logger.Debug("Checked blocked status",
+		zap.Any("user_id", userID),
+		zap.String("email", validation.MaskEmail(normalizedEmail)),
+		zap.Bool("is_blocked", isBlocked))
+
+	return isBlocked, nil
+}