using ColaFlow.Shared.Kernel.Modules;
using Microsoft.AspNetCore.Builder;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using FluentValidation;
using MediatR;
using ColaFlow.Modules.ProjectManagement.Application.Behaviors;
using ColaFlow.Modules.ProjectManagement.Application.Commands.CreateProject;
using ColaFlow.Modules.ProjectManagement.Application.Common.Interfaces;
using ColaFlow.Modules.ProjectManagement.Domain.Repositories;
using ColaFlow.Modules.ProjectManagement.Infrastructure.Persistence;
using ColaFlow.Modules.ProjectManagement.Infrastructure.Persistence.Interceptors;
using ColaFlow.Modules.ProjectManagement.Infrastructure.Repositories;
using ColaFlow.Modules.ProjectManagement.Infrastructure.Services;

namespace ColaFlow.Modules.ProjectManagement;

/// <summary>
/// Project Management Module
/// Responsible for managing projects, epics, stories, and tasks.
/// </summary>
public class ProjectManagementModule : IModule
{
    public string Name => "ProjectManagement";

    public void RegisterServices(IServiceCollection services, IConfiguration configuration)
    {
        // Register tenant context service (must be before DbContext for interceptor)
        services.AddScoped<ITenantContext, TenantContext>();

        // Register audit interceptor
        services.AddScoped<AuditInterceptor>();

        // Register DbContext with interceptor
        var connectionString = configuration.GetConnectionString("PMDatabase");
        services.AddDbContext<PMDbContext>((serviceProvider, options) =>
        {
            var auditInterceptor = serviceProvider.GetRequiredService<AuditInterceptor>();
            options.UseNpgsql(connectionString)
                   .AddInterceptors(auditInterceptor);
        });

        // Register repositories
        services.AddScoped<IProjectRepository, ProjectRepository>();
        services.AddScoped<IUnitOfWork, UnitOfWork>();

        // Note: IProjectNotificationService is registered in the API layer (Program.cs)
        // as it depends on IRealtimeNotificationService which is API-specific

        // Register MediatR handlers from Application assembly
        services.AddMediatR(cfg =>
        {
            cfg.RegisterServicesFromAssembly(typeof(CreateProjectCommand).Assembly);
        });

        // Register FluentValidation validators
        services.AddValidatorsFromAssembly(typeof(CreateProjectCommand).Assembly);

        // Register pipeline behaviors
        services.AddTransient(typeof(IPipelineBehavior<,>), typeof(ValidationBehavior<,>));

        Console.WriteLine($"[{Name}] Module services registered");
    }

    public void ConfigureApplication(IApplicationBuilder app)
    {
        // Configure module-specific middleware if needed
        Console.WriteLine($"[{Name}] Module application configured");
    }
}