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

namespace Indotalent.Features.Sales.Invoice.Cqrs;

public class InvoiceSalesOrderItemResponse
{
    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 GetInvoiceByIdResponse
{
    public string? Id { get; set; }
    public string? AutoNumber { get; set; }
    public DateTime? InvoiceDate { get; set; }
    public Data.Enums.InvoiceStatus InvoiceStatus { get; set; }
    public string? Description { get; set; }
    public string? SalesOrderId { get; set; }
    public string? SalesOrderAutoNumber { get; set; }
    public string? CustomerName { get; set; }
    public string? CustomerStreet { get; set; }
    public string? CustomerCity { 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? CurrencySymbol { 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<InvoiceSalesOrderItemResponse> Items { get; set; } = new();
}

public record GetInvoiceByIdQuery(string Id) : IRequest<GetInvoiceByIdResponse?>;

public class GetInvoiceByIdHandler : IRequestHandler<GetInvoiceByIdQuery, GetInvoiceByIdResponse?>
{
    private readonly AppDbContext _context;
    public GetInvoiceByIdHandler(AppDbContext context) => _context = context;

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

        return await _context.Invoice
            .AsNoTracking()
            .Include(x => x.SalesOrder)
                .ThenInclude(x => x!.Customer)
            .Include(x => x.SalesOrder)
                .ThenInclude(x => x!.SalesOrderItemList)
                    .ThenInclude(x => x.Product)
            .Where(x => x.Id == request.Id)
            .Select(x => new GetInvoiceByIdResponse
            {
                Id = x.Id,
                AutoNumber = x.AutoNumber,
                InvoiceDate = x.InvoiceDate,
                InvoiceStatus = x.InvoiceStatus,
                Description = x.Description,
                SalesOrderId = x.SalesOrderId,
                SalesOrderAutoNumber = x.SalesOrder!.AutoNumber,
                CustomerName = x.SalesOrder!.Customer!.Name,
                CustomerStreet = x.SalesOrder!.Customer!.Street,
                CustomerCity = x.SalesOrder!.Customer!.City,
                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,
                CurrencySymbol = company != null && company.Currency != null ? company.Currency.Symbol : "IDR",
                BeforeTaxAmount = x.SalesOrder!.BeforeTaxAmount,
                TaxAmount = x.SalesOrder!.TaxAmount,
                AfterTaxAmount = x.SalesOrder!.AfterTaxAmount,
                CreatedAt = x.CreatedAt,
                CreatedBy = x.CreatedBy,
                UpdatedAt = x.UpdatedAt,
                UpdatedBy = x.UpdatedBy,
                Items = x.SalesOrder!.SalesOrderItemList.Select(i => new InvoiceSalesOrderItemResponse
                {
                    Id = i.Id,
                    ProductId = i.ProductId,
                    ProductName = i.Product!.Name,
                    Summary = i.Summary,
                    UnitPrice = i.UnitPrice,
                    Quantity = i.Quantity,
                    Total = i.Total
                }).ToList()
            }).FirstOrDefaultAsync(cancellationToken);
    }
}