using System.Net;
using System.Net.Http.Json;
using System.Linq;
using CashLineERP.Application.IslamicFinance.ContractTemplates;
using CashLineERP.Application.IslamicFinance.Facilities;
using CashLineERP.Application.IslamicFinance.Murabaha;
using CashLineERP.Application.IslamicFinance.PartnerLenders;
using CashLineERP.Application.IslamicFinance.ProductProfiles;
using CashLineERP.Application.IslamicFinance.Requests;
using CashLineERP.Application.IslamicFinance.Shariah;
using CashLineERP.Contracts.IslamicFinance;
using CashLineERP.Domain.IslamicFinance.Murabaha;
using CashLineERP.Infrastructure.Persistence;
using CashLineERP.Infrastructure.Persistence.Repositories;
using CashLineERP.Infrastructure.Persistence.Repositories.IslamicFinance;
using Microsoft.Extensions.DependencyInjection;

namespace CashLineERP.Api.Tests;

[Collection("Islamic Finance HTTP QA")]
public sealed class IslamicFinanceMurabahaDisbursementQaTests : IClassFixture<ApiTestFactory>
{
    private readonly HttpClient _client;
    private readonly ApiTestFactory _factory;

    public IslamicFinanceMurabahaDisbursementQaTests(ApiTestFactory factory)
    {
        _factory = factory;
        _client = factory.CreateClient();
    }

    [Fact]
    public async Task Murabaha_Disbursement_Endpoints_Support_Create_List_Detail_And_Execute()
    {
        await _client.AuthenticateAsInternalAsync();
        var murabahaCaseId = SeedMurabahaCaseReadyForDisbursement();

        var createResponse = await _client.PostAsJsonAsync("/api/v1/islamic-finance/disbursements", new CreateIslamicFinanceMurabahaDisbursementRequest
        {
            MurabahaCaseId = murabahaCaseId,
            DisbursementNumber = "IFD-HTTP-0001",
            TargetType = "SUPPLIER_PAYMENT",
            InstructedAmount = 60000m,
            PlannedExecutionDate = new DateOnly(2026, 4, 7)
        });
        Assert.Equal(HttpStatusCode.OK, createResponse.StatusCode);
        var created = await createResponse.Content.ReadFromJsonAsync<IslamicFinanceMurabahaDisbursementResponse>();
        Assert.NotNull(created);

        var listResponse = await _client.GetAsync($"/api/v1/islamic-finance/disbursements?murabahaCaseId={murabahaCaseId}");
        Assert.Equal(HttpStatusCode.OK, listResponse.StatusCode);
        var list = await listResponse.Content.ReadFromJsonAsync<IslamicFinanceMurabahaDisbursementResponse[]>();
        Assert.NotNull(list);
        Assert.Contains(list!, entry => entry.Id == created!.Id);

        var detailResponse = await _client.GetAsync($"/api/v1/islamic-finance/disbursements/{created!.Id}");
        Assert.Equal(HttpStatusCode.OK, detailResponse.StatusCode);

        Assert.Equal(HttpStatusCode.OK, (await _client.PostAsync($"/api/v1/islamic-finance/disbursements/{created.Id}/submit", null)).StatusCode);

        await _client.AuthenticateAsFinanceCheckerAsync();
        Assert.Equal(HttpStatusCode.OK, (await _client.PostAsync($"/api/v1/islamic-finance/disbursements/{created.Id}/approve", null)).StatusCode);

        var executeResponse = await _client.PostAsJsonAsync($"/api/v1/islamic-finance/disbursements/{created.Id}/execute", new ExecuteIslamicFinanceMurabahaDisbursementRequest
        {
            ExecutionReferenceNumber = "PAY-HTTP-0001"
        });
        Assert.Equal(HttpStatusCode.OK, executeResponse.StatusCode);
        var executed = await executeResponse.Content.ReadFromJsonAsync<IslamicFinanceMurabahaDisbursementResponse>();
        Assert.NotNull(executed);
        Assert.Equal("ACTIVE", executed!.StatusCode);
    }

    [Fact]
    public async Task Murabaha_Disbursement_History_And_Audit_Endpoints_Return_Settlement_Linkage()
    {
        await _client.AuthenticateAsInternalAsync();
        var setup = await IslamicFinanceSettlementHttpSeedHelper.SeedAsync(_client, "IFDISB-HIST");
        var settlementNumber = $"IFS-DH-{Guid.NewGuid():N}"[..12].ToUpperInvariant();

        var settlementResponse = await _client.PostAsJsonAsync("/api/v1/islamic-finance/settlements", new CreateIslamicFinanceSettlementRequest
        {
            SettlementNumber = settlementNumber,
            MurabahaCaseId = setup.MurabahaCaseId,
            SettlementDate = new DateOnly(2026, 4, 10),
            SettlementCurrencyCode = "EGP",
            Lines =
            [
                new CreateIslamicFinanceSettlementLineRequest
                {
                    MurabahaDisbursementId = setup.DisbursementId,
                    SettledAmount = setup.ExecutedAmount
                }
            ]
        });
        Assert.Equal(HttpStatusCode.OK, settlementResponse.StatusCode);

        var historyResponse = await _client.GetAsync($"/api/v1/islamic-finance/disbursements/{setup.DisbursementId}/history");
        Assert.Equal(HttpStatusCode.OK, historyResponse.StatusCode);
        var history = await historyResponse.Content.ReadFromJsonAsync<IslamicFinanceLifecycleHistoryEntryResponse[]>();
        Assert.NotNull(history);
        Assert.Contains(history!, entry => entry.EventCode == "DISBURSEMENT_CREATED");
        Assert.Contains(history!, entry => entry.EventCode == "DISBURSEMENT_EXECUTED");
        Assert.Contains(history!, entry => entry.EventCode == "SETTLEMENT_LINKED");
        Assert.True(history!.SequenceEqual(history.OrderBy(entry => entry.OccurredAtUtc)));

        var auditResponse = await _client.GetAsync($"/api/v1/islamic-finance/disbursements/{setup.DisbursementId}/audit");
        Assert.Equal(HttpStatusCode.OK, auditResponse.StatusCode);
        var audit = await auditResponse.Content.ReadFromJsonAsync<IslamicFinanceMurabahaDisbursementAuditResponse>();
        Assert.NotNull(audit);
        Assert.Equal(setup.DisbursementId, audit!.Disbursement.Id);
        Assert.Contains(audit.Events, entry => entry.EventCode == "SETTLEMENT_LINKED");
    }

    private long SeedMurabahaCaseReadyForDisbursement()
    {
        using var scope = _factory.Services.CreateScope();
        var dbContext = scope.ServiceProvider.GetRequiredService<CashLineErpDbContext>();

        var partnerService = new IslamicFinancePartnerService(new IslamicFinancePartnerRepository(dbContext));
        var productService = new IslamicFinanceProductService(new IslamicFinanceProductRepository(dbContext));
        var facilityService = new IslamicFinanceFacilityService(new IslamicFinanceFacilityRepository(dbContext));
        var templateService = new IslamicFinanceContractTemplateService(new IslamicFinanceContractTemplateRepository(dbContext));
        var requestRepository = new IslamicFinanceRequestRepository(dbContext);
        var requestService = new IslamicFinanceRequestService(requestRepository);
        var shariahReviewService = new ShariahReviewService(new ShariahReviewRepository(dbContext));
        var murabahaCaseService = new MurabahaCaseService(new MurabahaCaseRepository(dbContext));
        var murabahaContractService = new IslamicFinanceMurabahaContractService(
            new IslamicFinanceMurabahaContractRepository(dbContext, new DocumentStorageRepository(dbContext)));

        var partner = CreateActivePartner(partnerService);
        var product = CreateActiveProduct(productService);
        var facility = CreateActiveFacility(facilityService, partner.Id, product.Id);
        var template = CreateActiveTemplate(templateService, product.Id);
        var request = CreateApprovedAssignedRequest(requestService, requestRepository, shariahReviewService, partner.Id, product.Id, facility.Id);

        var murabahaCase = murabahaCaseService.CreateCase(new CreateIslamicFinanceMurabahaCaseRequest
        {
            CaseNumber = $"MUR-DH-{Guid.NewGuid():N}"[..12].ToUpperInvariant(),
            FinancingRequestId = request.Id,
            CustomerPartyId = 1,
            PartnerLenderId = partner.Id,
            SupplierPartyId = 2,
            ProductProfileId = product.Id,
            ContractTemplateId = template.Id,
            TransactionCurrencyCode = "EGP",
            PurchaseCostAmount = 100000m,
            ProfitAmount = 20000m
        });

        murabahaCaseService.SubmitCase(murabahaCase.Id, 3);
        murabahaCaseService.ApproveCase(murabahaCase.Id, 4);
        murabahaCaseService.ActivateCase(murabahaCase.Id, 4);
        murabahaContractService.GenerateContract(murabahaCase.Id, 4, new GenerateIslamicFinanceMurabahaContractRequest());

        dbContext.IslamicFinanceProfitSchedules.AddRange(
            new IslamicFinanceProfitSchedule(murabahaCase.Id, 1, new DateOnly(2026, 5, 1), 50000m, 10000m, 60000m),
            new IslamicFinanceProfitSchedule(murabahaCase.Id, 2, new DateOnly(2026, 6, 1), 50000m, 10000m, 0m));
        dbContext.SaveChanges();

        return murabahaCase.Id;
    }

    private static IslamicFinancePartnerLenderResponse CreateActivePartner(IslamicFinancePartnerService service)
    {
        var existing = service.GetPartnerLenders(activeOnly: true).FirstOrDefault(entry => entry.PartnerLenderPartyId == 1);
        if (existing is not null)
        {
            return existing;
        }

        var created = service.CreatePartnerLender(new CreateIslamicFinancePartnerLenderRequest
        {
            PartnerLenderPartyId = 1,
            DefaultCurrencyCode = "EGP",
            SupportsMurabaha = true,
            SupportsReceivablesFinance = false,
            SupportsTawarruq = false
        });

        service.SubmitPartnerLender(created.Id, 3);
        service.ApprovePartnerLender(created.Id, 4);
        return service.ActivatePartnerLender(created.Id, 4);
    }

    private static IslamicFinanceProductProfileResponse CreateActiveProduct(IslamicFinanceProductService service)
    {
        var created = service.CreateProductProfile(new CreateIslamicFinanceProductProfileRequest
        {
            ProductType = "MURABAHA",
            ProductCode = $"MUR-DH-{Guid.NewGuid():N}"[..12].ToUpperInvariant(),
            ProductName = "Murabaha Disbursement HTTP Product",
            RequiresShariahReview = true,
            AllowsPartnerFunding = true,
            AllowsCashLineFunding = false
        });

        service.SubmitProductProfile(created.Id, 3);
        service.ApproveProductProfile(created.Id, 4);
        return service.ActivateProductProfile(created.Id, 4);
    }

    private static IslamicFinanceFacilityResponse CreateActiveFacility(
        IslamicFinanceFacilityService service,
        long partnerLenderId,
        long productProfileId)
    {
        var created = service.CreateFacility(new CreateIslamicFinanceFacilityRequest
        {
            PartnerLenderId = partnerLenderId,
            CustomerPartyId = 1,
            ProductProfileId = productProfileId,
            FacilityNumber = $"FAC-DH-{Guid.NewGuid():N}"[..12].ToUpperInvariant(),
            CurrencyCode = "EGP",
            ApprovedLimitAmount = 300000m,
            UtilizedAmount = 0m
        });

        service.SubmitFacility(created.Id, 3);
        service.ApproveFacility(created.Id, 4);
        return service.ActivateFacility(created.Id, 4);
    }

    private static IslamicFinanceContractTemplateResponse CreateActiveTemplate(
        IslamicFinanceContractTemplateService service,
        long productProfileId)
    {
        var created = service.CreateContractTemplate(new CreateIslamicFinanceContractTemplateRequest
        {
            ProductProfileId = productProfileId,
            TemplateCode = $"TPL-DH-{Guid.NewGuid():N}"[..12].ToUpperInvariant(),
            TemplateName = "Murabaha Disbursement HTTP Template",
            LanguageCode = "EN"
        });

        service.SubmitContractTemplate(created.Id, 3);
        service.ApproveContractTemplate(created.Id, 4);
        return service.ActivateContractTemplate(created.Id, 4);
    }

    private static IslamicFinanceFinancingRequestResponse CreateApprovedAssignedRequest(
        IslamicFinanceRequestService requestService,
        IslamicFinanceRequestRepository requestRepository,
        ShariahReviewService shariahReviewService,
        long partnerLenderId,
        long productProfileId,
        long facilityId)
    {
        var created = requestService.CreateRequest(new CreateIslamicFinanceFinancingRequestRequest
        {
            RequestNumber = $"REQ-DH-{Guid.NewGuid():N}"[..12].ToUpperInvariant(),
            CustomerPartyId = 1,
            ProductProfileId = productProfileId,
            FacilityId = facilityId,
            FundingSourceMode = "PARTNER",
            SourceDocumentType = "SALES_ORDER",
            SourceDocumentId = 9911,
            TransactionCurrencyCode = "EGP",
            RequestedAmount = 120000m
        });

        requestService.SubmitRequest(created.Id, 3);
        requestService.ApproveRequest(created.Id, 4);

        var review = shariahReviewService.CreateReviewCase(new CreateIslamicFinanceShariahReviewRequest
        {
            ReviewCaseNumber = $"SHR-DH-{Guid.NewGuid():N}"[..12].ToUpperInvariant(),
            ProductProfileId = productProfileId,
            FinancingRequestId = created.Id,
            ReviewReasonCode = "SHARIAH_REVIEW"
        });
        shariahReviewService.SubmitReviewCase(review.Id, 3);
        shariahReviewService.RecommendOutcome(review.Id, new RecommendIslamicFinanceShariahOutcomeRequest
        {
            ReviewOutcomeCode = "APPROVED",
            ReviewNotes = "Approved for disbursement HTTP QA."
        }, 3);
        shariahReviewService.ApproveOutcome(review.Id, 4);

        requestService.AttachShariahReview(created.Id, new AttachIslamicFinanceShariahReviewRequest
        {
            ShariahReviewCaseId = review.Id
        }, 3);
        requestRepository.AssignPartnerLender(created.Id, partnerLenderId, 3);
        return created;
    }
}
