public async Task RemoveChat(Shared.DTO.Conversations.Chat chat, string whoRemoves)
{
var conversation = await conversationRepository.GetByIdAsync(chat.Id);
if (conversation == null)
{
throw new InvalidDataException("Wrong conversation to remove.");
}
//secure chats may be removed by any of participants.
var userRole = await rolesRepository.GetByIdAsync(conversation.Id, whoRemoves);
if (!conversation.IsSecure)
{
if (conversation.IsGroup)
{
if (userRole.RoleId != ChatRole.Creator)
{
throw new InvalidDataException("Only creator can remove group.");
}
}
}
var attachmentsToDelete = await messagesService.GetAllAttachments(conversation.Id, whoRemoves);
if (attachmentsToDelete != null && attachmentsToDelete.Any())
{
filesService.DeleteFiles(attachmentsToDelete
.Select(x => x.AttachmentInfo.ContentUrl)
.ToList());
}
//this removes all messages and users-chats links
await conversationRepository.DeleteAsync(conversation);
await unitOfWork.Commit();
}