using MediatR;
using FnbEngine.Domain.AggregatesModel.RecipeAggregate;

namespace FnbEngine.API.Application.Queries;

public record GetRecipesByShopQuery(Guid ShopId) : IRequest<IEnumerable<RecipeDto>>;

public record RecipeDto(Guid Id, Guid ProductId, Guid ShopId, string Name, string? Instructions,
    int PrepTimeMinutes, bool IsActive, DateTime CreatedAt, List<RecipeIngredientDto> Ingredients);

public record RecipeIngredientDto(Guid Id, string IngredientName, decimal Quantity, string Unit, decimal CostPerUnit);

public class GetRecipesByShopQueryHandler : IRequestHandler<GetRecipesByShopQuery, IEnumerable<RecipeDto>>
{
    private readonly IRecipeRepository _repo;
    public GetRecipesByShopQueryHandler(IRecipeRepository repo) => _repo = repo;

    public async Task<IEnumerable<RecipeDto>> Handle(GetRecipesByShopQuery req, CancellationToken ct)
    {
        var recipes = await _repo.GetByShopIdAsync(req.ShopId, ct);
        return recipes.Select(r => new RecipeDto(
            r.Id, r.ProductId, r.ShopId, r.Name, r.Instructions, r.PrepTimeMinutes, r.IsActive, r.CreatedAt,
            r.Ingredients.Select(i => new RecipeIngredientDto(i.Id, i.IngredientName, i.Quantity, i.Unit, i.CostPerUnit)).ToList()
        ));
    }
}