ImageService

Implements IImageService, the group-imaging facade coordinating retrieval, security filtering, and mutation of images attached to groups. It depends on IUnitOfWork for transaction boundaries, IGroupImageRepository and IImageCategoryCodeRepository for data access, IGroupImageSecurityProvider for confidentiality/deletion visibility and edit authorization, and delegates writes to injected IImageUpdater/IImageDeleter collaborators. Its static constructor registers AutoMapper maps for ImageGroup→Image and imagingDataModel.Image→Image (deriving Category, IsDeleted, IsConfidential) and reuses GroupsMappingHelper.CreateGroupMap() and ImagingMappingHelper.CreateCategoryAndDocumentTypeMap().

Purpose

• Reports whether the current user can see confidential images, see deleted images, or edit images (delegated to IGroupImageSecurityProvider).
• Retrieves a single image by ID, optionally tolerating a missing image (GetImageOrDefault).
• Retrieves all images for a group, applying an optional ImageFilterCriteria combined with the current user's confidential/deleted visibility.
• Updates or deletes an image within a transaction, delegating the actual mutation to IImageUpdater/IImageDeleter.
• Retrieves the available image categories.

Context

• Namespace: SAIF.Services.Groups.Imaging
• Assembly/package: SAIF.Services (packaged inside the SAIF.SAIFCode.Core NuGet package)

Public members

Member	Signature	Purpose
ImageService(...)	public ImageService(IUnitOfWork unitOfWork, IValidationService validationService, IGroupImageSecurityProvider securityProvider, IGroupImageRepository groupImageRepository, IImageCategoryCodeRepository imageCategoryCodeRepository, IImageUpdater imageUpdater, IImageDeleter imageDeleter)	Validates the unit of work and validation service are non-null, and stores all injected collaborators.
CanUserSeeConfidentialImages	public bool CanUserSeeConfidentialImages()	Returns whether the current user is authorized to see confidential images.
CanUserSeeDeletedImages	public bool CanUserSeeDeletedImages()	Returns whether the current user is authorized to see deleted images.
CanUserEditImages	public bool CanUserEditImages()	Returns whether the current user is authorized to edit images.
GetImage	public Image GetImage(long groupImageId)	Returns the mapped Image for the given group-image ID (throws if not found, per repository behavior).
GetImageOrDefault	public Image GetImageOrDefault(long groupImageId)	Returns the mapped Image for the given group-image ID, or null if it does not exist.
GetImages(groupId)	public IEnumerable<Image> GetImages(string groupId)	Returns all images for the group, applying an empty (default) filter.
GetImages(groupId, filter)	public IEnumerable<Image> GetImages(string groupId, ImageFilterCriteria filter)	Returns images for the group matching filter, constrained by the current user's confidential/deleted visibility.
UpdateImage	public void UpdateImage(ImageEdit imageEdit)	Begins a transaction, delegates the update to IImageUpdater.Update, then commits.
DeleteImage	public void DeleteImage(ImageDelete imageDelete)	Begins a transaction, delegates the deletion to IImageDeleter.Delete, then commits.
GetCategories	public IEnumerable<Category> GetCategories()	Returns all image categories mapped from IImageCategoryCodeRepository.GetImageCategoryCodes().

Behavioral notes

• UpdateImage and DeleteImage wrap their delegated operation in unitOfWork.Begin()/Commit(), but do not catch exceptions or call Rollback(), so any thrown validation/repository exception propagates without an explicit rollback call*.
• CreateGroupImageRepositoryFilter always overrides the caller-supplied filter's CanUserSeeConfidentialImages/CanUserSeeDeletedImages flags with the security provider's live result, preventing callers from bypassing visibility rules through the filter object.
• The static constructor participates in the same shared AutoMapper configuration as GroupService and NoteService via GroupsMappingHelper.CreateGroupMap()*.

Note: Statements marked with * were inferred from code structure, naming conventions, or contextual evidence where direct confirmation was not available in source artifacts. Statements marked with ** could not be confirmed; treat as unknown until verified.

Sources

• Services/SAIF.Services/Groups/Imaging/ImageService.cs