using Admin.NET.Plugin.AiDOP.Supply;
using Xunit;

namespace Admin.NET.Plugin.AiDOP.Tests.S3.Supply;

public class PurchaseRequestMigrationFlowTests
{
    [Fact]
    public void MergeGeneratedRequests_WhenSameSupplierItemAndWeek_MergesQuantities()
    {
        var service = new PurchaseRequestMergeService();
        var requests = new List<PurchaseRequestMain>
        {
            CreateRequest(1, new DateTime(2026, 5, 11), requireGoods: 0, qty: 10),
            CreateRequest(2, new DateTime(2026, 5, 13), requireGoods: 0, qty: 15)
        };

        var result = service.MergeGeneratedRequests(requests);

        var merged = Assert.Single(result.Requests);
        Assert.Equal(2, result.OriginalCount);
        Assert.Equal(1, result.MergedCount);
        Assert.Equal(1, result.ReducedCount);
        Assert.Equal(25, merged.PrRqty);
        Assert.Equal(new DateTime(2026, 5, 11), merged.PrSsendDate);
    }

    [Fact]
    public void MergeGeneratedRequests_WhenRequireGoodsDiffers_DoesNotMerge()
    {
        var service = new PurchaseRequestMergeService();
        var requests = new List<PurchaseRequestMain>
        {
            CreateRequest(1, new DateTime(2026, 5, 11), requireGoods: 0, qty: 10),
            CreateRequest(2, new DateTime(2026, 5, 13), requireGoods: 1, qty: 15)
        };

        var result = service.MergeGeneratedRequests(requests);

        Assert.Equal(2, result.Requests.Count);
        Assert.Equal(0, result.ReducedCount);
    }

    [Fact]
    public void MergeGeneratedRequests_WhenDifferentWeek_DoesNotMerge()
    {
        var service = new PurchaseRequestMergeService();
        var requests = new List<PurchaseRequestMain>
        {
            CreateRequest(1, new DateTime(2026, 5, 17), requireGoods: 0, qty: 10),
            CreateRequest(2, new DateTime(2026, 5, 18), requireGoods: 0, qty: 15)
        };

        var result = service.MergeGeneratedRequests(requests);

        Assert.Equal(2, result.Requests.Count);
        Assert.Equal(0, result.ReducedCount);
    }

    [Fact]
    public void SelectPushCandidates_WhenNormalPrHasBillNo_ReturnsOnlySapQadCandidates()
    {
        var requests = new List<PurchaseRequestMain>
        {
            CreateRequest(1, new DateTime(2026, 5, 11), requireGoods: 0, qty: 10, billNo: "PR001"),
            CreateRequest(2, new DateTime(2026, 5, 11), requireGoods: 1, qty: 10, billNo: "PR002"),
            CreateRequest(3, new DateTime(2026, 5, 11), requireGoods: 0, qty: 10, billNo: null),
            CreateRequest(4, new DateTime(2026, 5, 11), requireGoods: 0, qty: 10, billNo: " ")
        };

        var candidates = PurchaseRequestExternalPushService.SelectPushCandidates(requests);

        var candidate = Assert.Single(candidates);
        Assert.Equal(1, candidate.Id);
        Assert.Equal("PR001", candidate.PrBillNo);
    }

    private static PurchaseRequestMain CreateRequest(long id, DateTime sendDate, int requireGoods, decimal qty, string? billNo = "PR")
    {
        return new PurchaseRequestMain
        {
            Id = id,
            TenantId = 1000,
            CompanyId = 10,
            FactoryId = 20,
            IcitemId = 30,
            PrPurchaseId = 40,
            SupplierType = "标准",
            IsRequireGoods = requireGoods,
            PrBillNo = billNo,
            PrRqty = qty,
            PrAqty = qty,
            PrSqty = qty,
            PrSsendDate = sendDate,
            PrSarriveDate = sendDate.AddDays(3),
            CreateTime = sendDate.AddHours(8)
        };
    }
}