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

cloud/maplefile-backend/internal/usecase/collection/create.go

@@ -0,0 +1,78 @@
+// monorepo/cloud/backend/internal/maplefile/usecase/collection/create.go
+package collection
+
+import (
+	"context"
+
+	"go.uber.org/zap"
+
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/config"
+	dom_collection "codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/domain/collection"
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/pkg/httperror"
+)
+
+type CreateCollectionUseCase interface {
+	Execute(ctx context.Context, collection *dom_collection.Collection) error
+}
+
+type createCollectionUseCaseImpl struct {
+	config *config.Configuration
+	logger *zap.Logger
+	repo   dom_collection.CollectionRepository
+}
+
+func NewCreateCollectionUseCase(
+	config *config.Configuration,
+	logger *zap.Logger,
+	repo dom_collection.CollectionRepository,
+) CreateCollectionUseCase {
+	logger = logger.Named("CreateCollectionUseCase")
+	return &createCollectionUseCaseImpl{config, logger, repo}
+}
+
+func (uc *createCollectionUseCaseImpl) Execute(ctx context.Context, collection *dom_collection.Collection) error {
+	//
+	// STEP 1: Validation.
+	//
+
+	e := make(map[string]string)
+	if collection == nil {
+		e["collection"] = "Collection is required"
+	} else {
+		if collection.OwnerID.String() == "" {
+			e["owner_id"] = "Owner ID is required"
+		}
+		if collection.EncryptedName == "" {
+			e["encrypted_name"] = "Collection name is required"
+		}
+		if collection.CollectionType == "" {
+			e["collection_type"] = "Collection type is required"
+		} else if collection.CollectionType != dom_collection.CollectionTypeFolder && collection.CollectionType != dom_collection.CollectionTypeAlbum {
+			e["collection_type"] = "Collection type must be either 'folder' or 'album'"
+		}
+		if collection.EncryptedCollectionKey.Ciphertext == nil || len(collection.EncryptedCollectionKey.Ciphertext) == 0 {
+			e["encrypted_collection_key"] = "Encrypted collection key is required"
+		}
+		if collection.State == "" {
+			e["state"] = "File state is required"
+		} else if collection.State != dom_collection.CollectionStateActive &&
+			collection.State != dom_collection.CollectionStateDeleted &&
+			collection.State != dom_collection.CollectionStateArchived {
+			e["state"] = "Invalid collection state"
+		}
+		if err := dom_collection.IsValidStateTransition(dom_collection.CollectionStateActive, collection.State); err != nil {
+			e["state"] = err.Error()
+		}
+	}
+	if len(e) != 0 {
+		uc.logger.Warn("Failed validating collection creation",
+			zap.Any("error", e))
+		return httperror.NewForBadRequest(&e)
+	}
+
+	//
+	// STEP 2: Insert into database.
+	//
+
+	return uc.repo.Create(ctx, collection)
+}