using System.Data;
using AdminDAL.CustomCode.Period;
using GB5Shared.GOP.Qualifier;
using System.Reflection;
using GB5Shared.Addon;
using GB5Shared.DaprCache;
using GB5Shared.EntityHandler;
using GB5Shared.EventLogPublish;
using GB5Shared.GB5Library.Qualifier;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.GOP.ExecuteAsync;
using GB5Shared.Hosting;
using GB5Shared.PickListGenerator;
using GB5Shared.PubSub.OutBox;
using GB5Shared.WorkFlow.WorkFlowEngine;
using GB5Shared.WorkFlow.WorkFlowRunTime;
using Microsoft.Data.SqlClient;
using Npgsql;
using PayRollBLL.SAP.Config;
using PayRollBLL.SAPPaySlip.Config;
using PayRollDAL.CustomeCode.DailyAttendance;
using PayRollDAL.CustomeCode.OULevelSetting;
using PayRollSL.Services;
using static GB5Shared.DTO.Framework.Enum.FrameworkEnumDTO;
using GB5Shared.DTO.Framework.CommonConfig;
using PayRollDAL.DTO.Employee;

namespace PayRollSL;

public class PayRollModule : IModule
{
    public void Register(IServiceCollection services, IConfiguration configuration)
    {
        // SAP IT Declaration named HttpClient
        var sapItDecBaseUrl = configuration["SapItDeclaration:BaseUrl"];
        if (!string.IsNullOrWhiteSpace(sapItDecBaseUrl))
        {
            services.AddHttpClient("sapItDeclaration", client =>
            {
                client.BaseAddress = new Uri(sapItDecBaseUrl);
                client.DefaultRequestHeaders.Add("Accept", "application/json");
            });
        }
        else
        {
            services.AddHttpClient("sapItDeclaration");
        }

        // SAP PaySlip named HttpClient
        var sapPaySlipBaseUrl = configuration["SapPaySlip:BaseUrl"];
        if (!string.IsNullOrWhiteSpace(sapPaySlipBaseUrl))
        {
            services.AddHttpClient("sapPaySlip", client =>
            {
                client.BaseAddress = new Uri(sapPaySlipBaseUrl);
                client.DefaultRequestHeaders.Add("Accept", "application/json");
            });
        }
        else
        {
            services.AddHttpClient("sapPaySlip");
        }

        // PayRoll-specific config sections
        services.Configure<DefaultLanguageOptions>(configuration.GetSection("DefaultLanguage"));
        services.Configure<SapItDeclarationOptions>(configuration.GetSection(SapItDeclarationOptions.SectionName));
        services.Configure<SapPaySlipOptions>(configuration.GetSection(SapPaySlipOptions.SectionName));

        // PayRoll-specific services
        services.AddScoped<IAddonService, AddonService>();
        services.AddScoped<VoucherNumberService>();
        services.AddScoped<IWorkFlowRunTime, WorkFlowRunTime>();
        services.AddScoped<IWorkFlowEngine, WorkFlowEngine>();
        services.AddScoped<IUserDelegationResolver, UserDelegationResolver>();
        services.AddScoped(typeof(BaseEntityAppService<>), typeof(BaseEntityAppService<>));
        services.AddScoped<IQualifierFacade, QualifierFacade>();
        services.AddGB5QualifierEngine();
        services.AddScoped<IExecutionEngine, ExecutionEngine>();
        services.AddScoped<IOutBox, OutBox>();
        services.AddScoped<KeyInvalidate>();
        services.AddScoped<CodeGeneration>();
        services.AddScoped<IPickListExecutor, PickListExecutor>();
        services.AddScoped<IDailyAttendanceDAL, DailyAttendanceDAL>();
        services.AddScoped<DailyAttendanceDAL>();
        services.AddScoped<IOULevelSettingDAL, OULevelSettingDAL>();
        services.AddScoped<EventLogPublish>();
        services.AddHostedService<PAYJobQueueProcessor>();

        // DB connection factory — SQL Server or PostgreSQL based on appsettings DataBaseType
        var gb5Config = configuration.GetSection("Gb5SystemDTO").Get<Gb5SystemDTO>()
            ?? throw new InvalidOperationException("Gb5SystemDTO configuration section is missing.");
        var activeDbType = (DatabaseType)gb5Config.DataBaseType;
        services.AddSingleton(new DatabaseTypeConfig(activeDbType));

        // Npgsql 6+ strict mode: must be set before any NpgsqlConnection is created
        AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);

        services.AddScoped<IDbConnection>(sp =>
        {
            var connStr = gb5Config.ActiveConnectionString;
            return activeDbType switch
            {
                DatabaseType.SQL => (IDbConnection)new SqlConnection(connStr),
                DatabaseType.POSTGRE => (IDbConnection)new NpgsqlConnection(connStr),
                _ => throw new NotSupportedException($"DataBaseType '{gb5Config.DataBaseType}' not supported.")
            };
        });

        // Scrutor assembly scan — PayRollBLL + PayRollDAL
        var payRollBLLAssembly = Assembly.Load("PayRollBLL");
        var payRollDALAssembly = Assembly.Load("PayRollDAL");
        services.Scan(scan => scan
            .FromAssemblies(payRollBLLAssembly, payRollDALAssembly)
            .AddClasses(c => c.Where(t => !t.IsAbstract && !t.IsInterface && t.GetMethod("<Clone>$") == null))
            .AsImplementedInterfaces()
            .WithScopedLifetime());

        // AdminDAL.CustomCode.Period.IPeriodDAL — PerquisitesBLL depends on it, but AdminDAL is a
        // different module and isn't covered by the scan above. Mirrors Program.cs's standalone
        // registration of IOULevelSettingDAL/IJobQueueEnqueuer for the same cross-module reason.
        services.AddScoped<AdminDAL.CustomCode.Period.IPeriodDAL, AdminDAL.CustomCode.Period.PeriodDAL>();

        // GB5Shared.QueueReader/FileImport/FileUpload — EmployeeAttachmentImportBLL/
        // EmployeeAttachmentBulkImportJobHandler depend on these. Not covered by the
        // PayRollBLL/PayRollDAL scan above. IAttachmentDAL/IFileUploadBLL are also registered
        // host-wide by HRFinanceHost/Program.cs — kept here too since re-registering the same
        // concrete implementation is harmless and keeps this module runnable standalone.
        services.AddScoped<GB5Shared.QueueReader.IJobQueueEnqueuer, GB5Shared.QueueReader.JobQueueEnqueuer>();
        services.AddScoped<GB5Shared.FileImport.IFileToDataTableService, GB5Shared.FileImport.FileToDataTableService>();
        services.AddScoped<GB5Shared.FileUpload.IAttachmentDAL, GB5Shared.FileUpload.AttachmentDAL>();
        services.AddScoped<GB5Shared.FileUpload.IFileUploadBLL, GB5Shared.FileUpload.FileUploadBLL>();
        services.AddScoped<GB5Shared.QueueReader.IJobQueueHandler, PayRollBLL.EmployeeAttachmentImport.EmployeeAttachmentBulkImportJobHandler>();
    }

    public void MapEndpoints(WebApplication app) { }
}