DD.WellWorkover.Cloud/AsbCloudInfrastructure/Services/WellFinalDocumentsService.cs

using AsbCloudApp.Data;
using AsbCloudApp.Exceptions;
using AsbCloudApp.Services;
using AsbCloudDb.Model;
using AsbCloudInfrastructure.Repository;
using Mapster;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace AsbCloudInfrastructure.Services
{
#nullable enable
    /// <summary>
    /// Сервис "Дело скважины"
    /// </summary>
    public class WellFinalDocumentsService : IWellFinalDocumentsService
    {
        private readonly IAsbCloudDbContext context;
        private readonly IFileService fileService;
        private readonly IUserService userService;
        private readonly IWellService wellService;
        private readonly IConfiguration configuration;
        private readonly IEmailService emailService;
        private readonly IFileCategoryService fileCategoryService;

        public WellFinalDocumentsService(IAsbCloudDbContext context,
            IFileService fileService,
            IUserService userService,
            IWellService wellService,
            IConfiguration configuration,
            IEmailService emailService,
            IFileCategoryService fileCategoryService)
        {
            this.context = context;
            this.fileService = fileService;
            this.userService = userService;
            this.wellService = wellService;
            this.configuration = configuration;
            this.emailService = emailService;
            this.fileCategoryService = fileCategoryService;
        }

        public async Task<int> UpdateRangeAsync(int idWell, IEnumerable<WellFinalDocumentInputDto>? dtos, CancellationToken token)
        {
            if (dtos is not null)
            {
                var entities = dtos
                    .Where(dto => dto.IdsPublishers?.Any() == true)
                    .SelectMany(dto => dto.IdsPublishers
                        .Select(idUser => new WellFinalDocument
                        {
                            IdCategory = dto.IdCategory,
                            IdWell = idWell,
                            IdUser = idUser
                        }));

                var itemsToDelete = context.WellFinalDocuments.Where(d => d.IdWell == idWell);
                context.WellFinalDocuments.RemoveRange(itemsToDelete);

                await context.WellFinalDocuments.AddRangeAsync(entities).ConfigureAwait(false);
                var data = await context.SaveChangesAsync(token).ConfigureAwait(false);

                if (data > 0)
                {
                    var message = "от Вас ожидается загрузка на портал документа «{0}»";
                    await GenerateMessageAsync(entities.Select(x => Convert(x)), message, token);
                }

                return data;
            }
            throw new ArgumentInvalidException("Данные по категориям отсутствуют.");
        }

        public async Task<IEnumerable<WellFinalDocumentDto>> GetByWellId(int idWell, CancellationToken token)
        {
            var result = new List<WellFinalDocumentDto>();

            var wells = await context.WellFinalDocuments.Where(x => x.IdWell == idWell)
                .ToListAsync(token)
                .ConfigureAwait(false);

            if (wells.Any())
            {
                var category = await context.FileCategories
                    .Where(x => wells.Select(w => w.IdCategory).Contains(x.Id))
                    .ToListAsync(token)
                    .ConfigureAwait(false);

                var wellFinalDocs = category
                    .GroupJoin(wells,
                        fc => fc.Id,
                        w => w.IdCategory,
                        (o, i) => new {
                            IdCategory = o.Id,
                            NameCategory = o.Name,
                            Wells = i
                        })
                    .ToList();

                var wellFiles = await fileService.GetInfosByWellIdAsync(idWell, token).ConfigureAwait(false);

                wellFinalDocs.ForEach(async item => {
                    var userIds = item.Wells
                        .Select(x => x.IdUser)
                        .ToList();
                    var allUsers = await userService.GetAllAsync(token)
                        .ConfigureAwait(false);

                    var allFiles = wellFiles.Where(x => x.IdCategory == item.IdCategory);

                    FileInfoDto? actualFile = null;
                    if (allFiles.Any())
                    {
                        actualFile = allFiles.OrderByDescending(x => x.Id)
                            .FirstOrDefault();
                    }

                    result.Add(new WellFinalDocumentDto {
                        IdWell = idWell,
                        NameCategory = item.NameCategory,
                        Publishers = allUsers.Where(x => userIds.Contains(x.Id)),
                        FilesCount = allFiles.Count(),
                        File = actualFile
                    });
                });
            }

            return result;
        }

        public async Task<IEnumerable<UserDto>> GetAvailableUsersAsync(int idWell, CancellationToken token)
        {
            var companyIds = await context.RelationCompaniesWells
                .Where(x => x.IdWell == idWell).Select(x => x.IdCompany)
                .ToListAsync(token)
                .ConfigureAwait(false);

            var allUsers = await userService.GetAllAsync(token)
                .ConfigureAwait(false);

            return allUsers.Where(x => {
                    var idCompany = x.IdCompany ?? default(int);
                    return companyIds.Contains(idCompany);
                })
                .OrderBy(x => x.Surname)
                .ToList();
        }

        public async Task<int> SaveCategoryFile(int idWell, int idCategory, int idUser, Stream fileStream, string fileName, CancellationToken token)
        {
            var entity = await context.WellFinalDocuments
                .AsNoTracking()
                .FirstOrDefaultAsync(x => x.IdWell == idWell && x.IdCategory == idCategory && x.IdUser == idUser);

            if (entity is null)
                throw new ArgumentInvalidException("Пользователь не является ответственным за загрузку файла для данной категории.");

            var dto = Convert(entity);

            var file = await fileService.SaveAsync(dto.IdWell, dto.IdUser, dto.IdCategory, fileName,
                 fileStream, token).ConfigureAwait(false);

            return file?.Id ?? -1;
        }

        public async Task<WellFinalDocumentsHistoryDto> GetFilesHistoryByIdCategory(int idWell, int idCategory, CancellationToken token)
        {
            var files = await fileService.GetInfosByCategoryAsync(idWell, idCategory, token).ConfigureAwait(false);

            return new WellFinalDocumentsHistoryDto { 
                IdWell = idWell,
                IdCategory = idCategory,
                File = files
            };
        }

        private async Task GenerateMessageAsync(IEnumerable<WellFinalDocumentDBDto> dtos, string message, CancellationToken token)
        {
            foreach (var item in dtos)
            {
                var user = await userService.GetOrDefaultAsync(item.IdUser, token);
                if (user?.Email is not null)
                {
                    var category = await fileCategoryService.GetOrDefaultAsync(item.IdCategory, token);
                    var well = await wellService.GetOrDefaultAsync(item.IdWell, token);

                    SendMessage(well, user, category.Name, message, token);
                }
            }
        }

        private void SendMessage(WellDto well, UserDto user, string documentCategory, string message, CancellationToken token)
        {
            var factory = new WellFinalDocumentMailBodyFactory(configuration);
            var subject = factory.MakeSubject(well, documentCategory);
            var body = factory.MakeMailBodyForWellFinalDocument(well, user.Name ?? user.Surname, string.Format(message, documentCategory));
            emailService.EnqueueSend(user.Email, subject, body);
        }

        private WellFinalDocumentDBDto Convert(WellFinalDocument entity)
            => entity.Adapt<WellFinalDocumentDBDto>();
    }
#nullable disable
}