using System.Net.Http.Json;
using System.Text.Json;
using FluentAssertions;
using foodmarket.IntegrationTests.Support;
using Xunit;

namespace foodmarket.IntegrationTests;

/// <summary>Паритет п.7: акт сверки с поставщиком — начальное сальдо, движения
/// периода, конечное сальдо.</summary>
[Collection(ApiCollection.Name)]
public class SupplierReconciliationTests
{
    private readonly ApiFactory _factory;
    public SupplierReconciliationTests(ApiFactory factory) => _factory = factory;

    private static string RandomBarcode()
        => string.Concat(Enumerable.Range(0, 13).Select(_ => Random.Shared.Next(0, 10)));

    [Fact]
    public async Task Reconciliation_includes_supply_as_debit_and_closing_balance()
    {
        var api = new ApiActor(_factory.CreateClient());
        await api.SignupAndLoginAsync($"recon-{Guid.NewGuid():N}");
        var refs = await api.LoadRefsAsync();
        var supplier = await api.CreateCounterpartyAsync($"S-{Guid.NewGuid():N}");
        var product = await api.CreateProductAsync(refs, $"P-{Guid.NewGuid():N}", 500m, RandomBarcode());
        // Приёмка 10×100 = 1000 → мы должны 1000.
        var (_, total) = await api.CreatePostedSupplyAsync(refs, supplier, product, 10m, 100m);

        var recon = await api.GetJsonAsync($"/api/money/reports/supplier-reconciliation?supplierId={supplier}");
        recon.GetProperty("supplierId").GetString().Should().Be(supplier);
        var rows = recon.GetProperty("rows").EnumerateArray().ToList();
        rows.Should().Contain(r => r.GetProperty("docType").GetString() == "Приёмка" && r.GetProperty("debit").GetDecimal() == total);
        recon.GetProperty("closingBalance").GetDecimal().Should().Be(total, "конечное сальдо = сумма приёмки (неоплачено)");
    }
}