aswi20220x00-gitlab/Backend/Core/Services/AnnotationService/AnnotationServiceEF.cs @ 1088c14e

using Core.Contexts;
using Core.Entities;
using Models.Annotations;
using Models.Enums;
using Serilog;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Core.Services.AnnotationService
{
    public class AnnotationServiceEF : IAnnotationService
    {
        private readonly DatabaseContext context;
        private readonly ILogger logger;

        public AnnotationServiceEF(DatabaseContext context, ILogger logger)
        {
            this.context = context;
            this.logger = logger;
        }

        public void CreateDocumentAnnotations(AnnotationsAddRequest request, Guid clientUserId)
        {
            User addingUser = context.Users.Single(u => u.Id == clientUserId);

            // Check the documents exist
            foreach (Guid docId in request.DocumentIdList)
            {
                if (!context.Documents.Any(d => d.Id == docId))
                {
                    logger.Information($"Received a non-existent Document ID when assigning documents to users");
                    throw new InvalidOperationException($"Document with ID {docId} does not exist");
                }
            }

            foreach (Guid userId in request.UserIdList)
            {
                var user = context.Users.Single(u => u.Id == userId);
                var userAnnotatedDocuments = context.Annotations.Where(a => a.User.Id == userId).Select(a => a.Document.Id);

                foreach (Guid docId in request.DocumentIdList)
                {
                    if (userAnnotatedDocuments.Contains(docId))
                    {
                        logger.Information($"User {user.Username} has already been assigned the document {docId}, ignoring");
                    }

                    var document = context.Documents.Single(d => d.Id == docId);

                    context.Annotations.Add(new Annotation()
                    {
                        User = user,
                        UserAssigned = addingUser,
                        DateAssigned = DateTime.Now,
                        DateLastChanged = DateTime.Now,
                        Document = document,
                        State = EState.NEW,
                        Note = ""
                    });
                }
            }

            context.SaveChanges();
        }
    }
}