using MediatR;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Routing;
using Nashel.Modules.Catalog.Application.Commands;
using Nashel.Modules.Catalog.Application.Queries;

namespace Nashel.Modules.Catalog.Presentation.Endpoints;

/// <summary>
/// API Каталога (Категории и Услуги).
/// </summary>
public static class CatalogEndpoints
{
    public static void MapCatalogEndpoints(this IEndpointRouteBuilder app)
    {
        var catalogGroup = app.MapGroup("/api/catalog").WithTags("Catalog");

        // --- Категории ---

        catalogGroup.MapPost("/categories", async ([FromBody] CreateCategoryCommand command, ISender sender) =>
        {
            var result = await sender.Send(command);
            return result.IsSuccess ? Results.Ok(result.Value) : Results.BadRequest(result.Error);
        })
        .WithName("CreateCategory")
        .WithOpenApi(operation => new(operation) { Summary = "Создать категорию (Admin)", Description = "Создает новую категорию. Требуются права администратора." });

        catalogGroup.MapGet("/categories", async (ISender sender) =>
        {
            var result = await sender.Send(new GetCategoriesQuery());
            return result.IsSuccess ? Results.Ok(result.Value) : Results.BadRequest(result.Error);
        })
        .WithName("GetCategories")
        .WithOpenApi(operation => new(operation) { Summary = "Получить все категории", Description = "Возвращает плоский список категорий с указанием ParentId для иерархии." });

        // --- Услуги (Offers) ---

        var protectedOffersGroup = catalogGroup.MapGroup("").RequireAuthorization();

        protectedOffersGroup.MapGet("/offers/my", async (ISender sender) =>
        {
            var result = await sender.Send(new GetMyOffersQuery());
            return result.IsSuccess ? Results.Ok(result.Value) : Results.BadRequest(result.Error);
        })
        .WithName("GetMyOffers")
        .WithOpenApi(operation => new(operation) { Summary = "Получить мои услуги", Description = "Возвращает список услуг текущего пользователя." });

        protectedOffersGroup.MapPost("/offers", async ([FromBody] CreateOfferCommand command, ISender sender) =>
        {
            var result = await sender.Send(command);
            return result.IsSuccess ? Results.Ok(result.Value) : Results.BadRequest(result.Error);
        })
        .WithName("CreateOffer")
        .WithOpenApi(operation => new(operation) { Summary = "Создать оффер/услугу", Description = "Создает новое предложение услуги в указанной категории." });

        catalogGroup.MapGet("/offers/{id:guid}", async (Guid id, ISender sender) =>
        {
            var result = await sender.Send(new GetOfferByIdQuery(id));
            return result.IsSuccess && result.Value is not null ? Results.Ok(result.Value) : Results.NotFound();
        })
        .WithName("GetOfferById")
        .WithOpenApi(operation => new(operation) { Summary = "Получить детали услуги по ID", Description = "Возвращает полную информацию об услуге." });

        protectedOffersGroup.MapPut("/offers/{id:guid}", async (Guid id, [FromBody] UpdateOfferPayload payload, ISender sender) =>
        {
            var command = new UpdateOfferCommand(id, payload.Title, payload.Description, payload.Price.Amount, payload.Price.Type, payload.Attributes, payload.Images);
            await sender.Send(command);
            return Results.NoContent();
        })
        .WithName("UpdateOffer")
        .WithOpenApi(operation => new(operation) { Summary = "Обновить услугу" });

        protectedOffersGroup.MapPatch("/offers/{id:guid}/toggle", async (Guid id, ISender sender) =>
        {
            var isActive = await sender.Send(new ToggleOfferStatusCommand(id));
            return Results.Ok(new { IsActive = isActive });
        })
        .WithName("ToggleOfferStatus")
        .WithOpenApi(operation => new(operation) { Summary = "Приостановить/активировать услугу" });

        protectedOffersGroup.MapDelete("/offers/{id:guid}", async (Guid id, ISender sender) =>
        {
            await sender.Send(new DeleteOfferCommand(id));
            return Results.NoContent();
        })
        .WithName("DeleteOffer")
        .WithOpenApi(operation => new(operation) { Summary = "Удалить услугу" });

        protectedOffersGroup.MapPost("/offers/image", async (IFormFile file, ISender sender) =>
        {
            using var ms = new MemoryStream();
            await file.CopyToAsync(ms);
            var url = await sender.Send(new UploadOfferImageCommand(ms.ToArray(), file.FileName));
            return Results.Ok(new { url });
        })
        .WithName("UploadOfferImage")
        .WithOpenApi(operation => new(operation) { Summary = "Загрузить изображение для услуги" })
        .DisableAntiforgery();
    }
}

public record UpdateOfferPayload(
    string Title, 
    string Description, 
    PricePayload Price, 
    Dictionary<string, string>? Attributes,
    List<string>? Images);
public record PricePayload(decimal Amount, int Type);