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

cloud/maplefile-backend/internal/usecase/storageusageevent/create_event.go

@@ -0,0 +1,87 @@
+// monorepo/cloud/maplefile-backend/internal/maplefile/usecase/storageusageevent/create_event.go
+package storageusageevent
+
+import (
+	"context"
+	"time"
+
+	"go.uber.org/zap"
+
+	"github.com/gocql/gocql"
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/config"
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/domain/storageusageevent"
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/pkg/httperror"
+)
+
+type CreateStorageUsageEventUseCase interface {
+	Execute(ctx context.Context, userID gocql.UUID, fileSize int64, operation string) error
+}
+
+type createStorageUsageEventUseCaseImpl struct {
+	config *config.Configuration
+	logger *zap.Logger
+	repo   storageusageevent.StorageUsageEventRepository
+}
+
+func NewCreateStorageUsageEventUseCase(
+	config *config.Configuration,
+	logger *zap.Logger,
+	repo storageusageevent.StorageUsageEventRepository,
+) CreateStorageUsageEventUseCase {
+	logger = logger.Named("CreateStorageUsageEventUseCase")
+	return &createStorageUsageEventUseCaseImpl{config, logger, repo}
+}
+
+func (uc *createStorageUsageEventUseCaseImpl) Execute(ctx context.Context, userID gocql.UUID, fileSize int64, operation string) error {
+	//
+	// STEP 1: Validation.
+	//
+
+	e := make(map[string]string)
+	if userID.String() == "" {
+		e["user_id"] = "User ID is required"
+	}
+	if fileSize <= 0 {
+		e["file_size"] = "File size must be greater than 0"
+	}
+	if operation == "" {
+		e["operation"] = "Operation is required"
+	} else if operation != "add" && operation != "remove" {
+		e["operation"] = "Operation must be 'add' or 'remove'"
+	}
+	if len(e) != 0 {
+		uc.logger.Warn("Failed validating create storage usage event",
+			zap.Any("error", e))
+		return httperror.NewForBadRequest(&e)
+	}
+
+	//
+	// STEP 2: Create storage usage event.
+	//
+
+	now := time.Now()
+	event := &storageusageevent.StorageUsageEvent{
+		UserID:    userID,
+		EventDay:  now.Truncate(24 * time.Hour),
+		EventTime: now,
+		FileSize:  fileSize,
+		Operation: operation,
+	}
+
+	err := uc.repo.Create(ctx, event)
+	if err != nil {
+		uc.logger.Error("Failed to create storage usage event",
+			zap.String("user_id", userID.String()),
+			zap.Int64("file_size", fileSize),
+			zap.String("operation", operation),
+			zap.Error(err))
+		return err
+	}
+
+	uc.logger.Debug("Successfully created storage usage event",
+		zap.String("user_id", userID.String()),
+		zap.Int64("file_size", fileSize),
+		zap.String("operation", operation))
+
+	return nil
+}