using System;
using System.Threading.Tasks;
using System.Collections.Generic;
using Xunit;
using Moq;
using ComplianceNFs.Core.Application.Services;
using ComplianceNFs.Core.Ports;
using ComplianceNFs.Core.Entities;
using ComplianceNFs.Infrastructure.Repositories;
using Microsoft.Extensions.Logging;

namespace ComplianceNFs.Infrastructure.Tests
{
    public class MatchingServiceTests
    {
        [Fact]
        public async Task MatchAsync_SetsMatchedStatus_WhenSingleRecordMatches()
        {
            // Arrange
            var invoice = new EnergyInvoice {
                CnpjComp = "02696252000122",
                CnpjVend = "06981176000158",
                MontNF = 19.845m,
                PrecNF = 248.76m,
                MailId = "m",
                ConversationId = "c",
                SupplierEmail = "s",
                ReceivedDate = DateTime.Now,
                InvoiceId = 359630,
                Filename = "f.xml"
            };
            var CaminhoDB = "X:\\Middle\\Informativo Setorial\\Modelo Word\\BD1_dados cadastrais e faturas.accdb";
            var repo = new AccessDbRepository(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + CaminhoDB + ";Jet OLEDB:Database Password=gds21");
            // Act
            var result = repo.GetByCnpj(invoice.CnpjComp);
            var mockLogger = new Mock<ILogger<MatchingService>>();
            var service = new MatchingService(repo, mockLogger.Object);
            // Act
            await service.MatchAsync(invoice);
            // Debug output
            System.Diagnostics.Debug.WriteLine($"Invoice status after match: {invoice.Status}");
            // Assert
            Assert.Equal(result.First().CnpjComp, invoice.CnpjComp);
            Assert.Equal(result.First().CnpjVend, invoice.CnpjVend);
            Assert.Equal(result.First().MontLO, invoice.MontNF);
            Assert.Equal(result.First().PrecLO, invoice.PrecNF);
            Assert.Equal(InvoiceStatus.Matched, invoice.Status);
            Assert.Equal(240712110001250501, (Int64)invoice.MatchedCodTE!);
        }

        [Fact]
        public async Task MatchAsync_SetsFallbackMatched_WhenSumOfTwoRecordsMatches()
        {
            var mockRepo = new Mock<IAccessDbRepository>();
            var mockLogger = new Mock<ILogger<MatchingService>>();
            var invoice = new EnergyInvoice { CnpjComp = "123", CnpjVend = "456", MontNF = 300, PrecNF = 600, MailId = "m", ConversationId = "c", SupplierEmail = "s", ReceivedDate = DateTime.Now, InvoiceId = 1, Filename = "f.xml" };
            var records = new List<BuyingRecord> {
                new BuyingRecord { CnpjComp = "123", CnpjVend = "456", MontLO = 100, PrecLO = 200, CodTE = 1 },
                new BuyingRecord { CnpjComp = "123", CnpjVend = "456", MontLO = 200, PrecLO = 400, CodTE = 2 }
            };
            mockRepo.Setup(r => r.GetByCnpj("123")).Returns(records);
            var service = new MatchingService(mockRepo.Object, mockLogger.Object);

            await service.MatchAsync(invoice);

            Assert.Equal(InvoiceStatus.FallbackMatched, invoice.Status);
            Assert.Equal(1, invoice.MatchedCodTE); // or null, depending on your logic
            Assert.Contains("Matched by sum", invoice.DiscrepancyNotes);
        }

        [Fact]
        public async Task MatchAsync_SetsNotFound_WhenNoMatch()
        {
            // Arrange
            var mockRepo = new Mock<IAccessDbRepository>();
            var mockLogger = new Mock<ILogger<MatchingService>>();
            var invoice = new EnergyInvoice {
                CnpjComp = "123",
                CnpjVend = "456",
                MontNF = 999,
                PrecNF = 999,
                MailId = "m",
                ConversationId = "c",
                SupplierEmail = "s",
                ReceivedDate = DateTime.Now,
                InvoiceId = 1,
                Filename = "f.xml"
            };
            var records = new List<BuyingRecord> {
                new BuyingRecord { CnpjComp = "123", CnpjVend = "456", MontLO = 100, PrecLO = 200, CodTE = 1 },
                new BuyingRecord { CnpjComp = "123", CnpjVend = "456", MontLO = 200, PrecLO = 400, CodTE = 2 }
            };
            mockRepo.Setup(r => r.GetByCnpj("123")).Returns(records);
            var service = new MatchingService(mockRepo.Object, mockLogger.Object);
            // Act
            await service.MatchAsync(invoice);
            // Assert
            Assert.Equal(InvoiceStatus.NotFound, invoice.Status);
            Assert.Null(invoice.MatchedCodTE);
        }
    }

    public class ComplianceServiceTests
    {
        [Fact]
        public async Task ValidateAsync_SetsValidated_WhenTaxMatches()
        {
            var service = new ComplianceService();
            var invoice = new EnergyInvoice
            {
                MailId = "m",
                ConversationId = "c",
                SupplierEmail = "s",
                ReceivedDate = DateTime.Now,
                InvoiceId = 1,
                Filename = "f.xml",
                Status = InvoiceStatus.Matched,
                ValorSemImpostos = 100,
                ValorFinalComImpostos = 125m,
                IcmsNF = 0.2m, // implied tax = 0.1
            };

            await service.ValidateAsync(invoice);

            // Debug output
            System.Diagnostics.Debug.WriteLine($"Invoice status after validate: {invoice.Status}");
            Assert.Null(invoice.DiscrepancyNotes);
            Assert.Equal(InvoiceStatus.Validated, invoice.Status);
        }

        [Fact]
        public async Task ValidateAsync_SetsTaxMismatch_WhenTaxDiffers()
        {
            // Arrange
            var invoice = new EnergyInvoice {
                MailId = "m",
                ConversationId = "c",
                SupplierEmail = "s",
                ReceivedDate = DateTime.Now,
                InvoiceId = 1,
                Filename = "f.xml",
                IcmsNF = 100,
                Status = InvoiceStatus.Matched
            };
            var service = new ComplianceService();
            // Act
            invoice.IcmsNF = 100;
            invoice.ValorFinalComImpostos = 110;
            invoice.ValorSemImpostos = 100;
            await service.ValidateAsync(invoice);
            // Assert
            Assert.Equal(InvoiceStatus.TaxMismatch, invoice.Status);
        }
    }

    public class NotificationServiceTests
    {
        [Fact]
        public async Task NotifyAsync_WritesToConsole()
        {
            // Arrange
            var invoice = new EnergyInvoice {
                MailId = "m",
                ConversationId = "c",
                SupplierEmail = "s",
                ReceivedDate = DateTime.Now,
                InvoiceId = 1,
                Filename = "f.xml",
                Status = InvoiceStatus.Validated
            };
            var service = new NotificationService();
            // Act & Assert
            var ex = await Record.ExceptionAsync(() => service.NotifyAsync(invoice, "Test message"));
            Assert.Null(ex); // Should not throw
        }
    }
}