blazor-cms/Features/Sales/SalesOrder/Cqrs/GetSalesOrderByIdHandler.cs

using Indotalent.Infrastructure.Database;
using MediatR;
using Microsoft.EntityFrameworkCore;
using Indotalent.Shared.Utils;

namespace Indotalent.Features.Sales.SalesOrder.Cqrs;

public class SalesOrderItemResponse
{
    public string? Id { get; set; }
    public string? ProductId { get; set; }
    public string? ProductName { get; set; }
    public string? Summary { get; set; }
    public decimal? UnitPrice { get; set; }
    public double? Quantity { get; set; }
    public decimal? Total { get; set; }
}

public class GetSalesOrderByIdResponse
{
    public string? Id { get; set; }
    public string? AutoNumber { get; set; }
    public DateTime? OrderDate { get; set; }
    public Data.Enums.SalesOrderStatus OrderStatus { get; set; }
    public string? Description { get; set; }
    public string? CustomerId { get; set; }
    public string? CustomerName { get; set; }
    public string? CustomerStreet { get; set; }
    public string? CustomerCity { get; set; }
    public string? CustomerState { get; set; }
    public string? CustomerZipCode { get; set; }
    public string? CustomerPhone { get; set; }
    public string? CustomerEmail { get; set; }
    public string? EmployeeId { get; set; }
    public string? EmployeeName { get; set; }
    public string? SalesOrderGroupId { get; set; }
    public string? SalesOrderGroupName { get; set; }
    public string? SalesOrderCategoryId { get; set; }
    public string? SalesOrderCategoryName { get; set; }
    public string? CompanyName { get; set; }
    public string? CompanyStreet { get; set; }
    public string? CompanyCity { get; set; }
    public string? CompanyState { get; set; }
    public string? CompanyZipCode { get; set; }
    public string? CompanyPhone { get; set; }
    public string? CompanyEmail { get; set; }
    public string? CurrencySymbol { get; set; }
    public string? TaxId { get; set; }
    public decimal? BeforeTaxAmount { get; set; }
    public decimal? TaxAmount { get; set; }
    public decimal? AfterTaxAmount { get; set; }
    public DateTimeOffset? CreatedAt { get; set; }
    public string? CreatedBy { get; set; }
    public DateTimeOffset? UpdatedAt { get; set; }
    public string? UpdatedBy { get; set; }
    public List<SalesOrderItemResponse> Items { get; set; } = new();
}

public record GetSalesOrderByIdQuery(string Id) : IRequest<GetSalesOrderByIdResponse?>;

public class GetSalesOrderByIdHandler : IRequestHandler<GetSalesOrderByIdQuery, GetSalesOrderByIdResponse?>
{
    private readonly AppDbContext _context;
    public GetSalesOrderByIdHandler(AppDbContext context) => _context = context;

    public async Task<GetSalesOrderByIdResponse?> Handle(GetSalesOrderByIdQuery request, CancellationToken cancellationToken)
    {
        var company = await _context.Company
            .AsNoTracking()
            .Include(x => x.Currency)
            .OrderByDescending(x => x.IsDefault)
            .FirstOrDefaultAsync(cancellationToken);

        return await _context.SalesOrder
            .AsNoTracking()
            .Include(x => x.Customer)
            .Include(x => x.Employee)
            .Include(x => x.SalesOrderGroup)
            .Include(x => x.SalesOrderCategory)
            .Include(x => x.SalesOrderItemList)
            .ThenInclude(x => x.Product)
            .Where(x => x.Id == request.Id)
            .Select(x => new GetSalesOrderByIdResponse
            {
                Id = x.Id,
                AutoNumber = x.AutoNumber,
                OrderDate = x.OrderDate,
                OrderStatus = x.OrderStatus,
                Description = x.Description,
                CustomerId = x.CustomerId,
                CustomerName = x.Customer != null ? x.Customer.Name : string.Empty,
                CustomerStreet = x.Customer != null ? x.Customer.Street : string.Empty,
                CustomerCity = x.Customer != null ? x.Customer.City : string.Empty,
                CustomerState = x.Customer != null ? x.Customer.State : string.Empty,
                CustomerZipCode = x.Customer != null ? x.Customer.ZipCode : string.Empty,
                CustomerPhone = x.Customer != null ? x.Customer.PhoneNumber : string.Empty,
                CustomerEmail = x.Customer != null ? x.Customer.EmailAddress : string.Empty,
                EmployeeId = x.EmployeeId,
                EmployeeName = x.Employee != null ? x.Employee.Name : string.Empty,
                SalesOrderGroupId = x.SalesOrderGroupId,
                SalesOrderGroupName = x.SalesOrderGroup != null ? x.SalesOrderGroup.Name : string.Empty,
                SalesOrderCategoryId = x.SalesOrderCategoryId,
                SalesOrderCategoryName = x.SalesOrderCategory != null ? x.SalesOrderCategory.Name : string.Empty,
                CompanyName = company != null ? company.Name : string.Empty,
                CompanyStreet = company != null ? company.StreetAddress : string.Empty,
                CompanyCity = company != null ? company.City : string.Empty,
                CompanyState = company != null ? company.StateProvince : string.Empty,
                CompanyZipCode = company != null ? company.ZipCode : string.Empty,
                CompanyPhone = company != null ? company.Phone : string.Empty,
                CompanyEmail = company != null ? company.Email : string.Empty,
                CurrencySymbol = company != null && company.Currency != null ? company.Currency.Symbol : "IDR",
                TaxId = x.TaxId,
                BeforeTaxAmount = x.BeforeTaxAmount,
                TaxAmount = x.TaxAmount,
                AfterTaxAmount = x.AfterTaxAmount,
                CreatedAt = x.CreatedAt,
                CreatedBy = x.CreatedBy,
                UpdatedAt = x.UpdatedAt,
                UpdatedBy = x.UpdatedBy,
                Items = x.SalesOrderItemList.Select(i => new SalesOrderItemResponse
                {
                    Id = i.Id,
                    ProductId = i.ProductId,
                    ProductName = i.Product != null ? i.Product.Name : string.Empty,
                    Summary = i.Summary,
                    UnitPrice = i.UnitPrice,
                    Quantity = i.Quantity,
                    Total = i.Total
                }).ToList()
            }).FirstOrDefaultAsync(cancellationToken);
    }
}