using System;
using System.Collections.Generic;
using System.Linq;
using HibernateMVCTest.ServiceClasses;
using linqExpression = System.Linq.Expressions;
using System.Web;
using System.Web.Mvc;
using Castle.MicroKernel.Registration.Interceptor;
using HibernateMVCTest.Models;
using NHibernate;
using NHibernate.Criterion;
using Queries;
using Rhino.Commons;
using ProductModelActiveRecord;
using NHibernate.Linq;

namespace HibernateMVCTest.Controllers
{
    public class CatalogController : Controller
    {
        
        public ActionResult Index()
        {
            return null;

        }

        public IList<T> GetList<T>(IList<linqExpression.Expression<Func<T, bool>>> criteria)
        {
            var query = from item in UnitOfWork.CurrentSession.Linq<T>()
                        select item;
            
            foreach (var criterion in criteria)
            {
                query.Where(criterion);
            }

            return query.ToList();
        }

        //this is only an example -- this stuff shouldn't be hardcoded
        public ActionResult ListPagedProduct(int? ID)
        {
            int itemsPerPage = 5;
            int startIndex = (ID.Value - 1)* itemsPerPage;

            var queryHandler = new QueryHandler<Product>();
            var p = queryHandler.GetList().Skip(startIndex).Take(itemsPerPage).ToList();

            return RenderView("ListProduct", p);
        }

        public ActionResult ListProduct()
        {
            var queryHandler = new QueryHandler<Product>();
            var p = queryHandler.GetList().ToList();

            return RenderView("ListProduct", p);
        }

        public ActionResult ViewProduct(string ID)
        {

            var queryHandler = new QueryHandler<Product>();
            queryHandler.AddCriteria(item => item.Title == ID);

            var p = queryHandler.GetList().First();

            if (p != null)
            {
                return RenderView("DisplayProduct",
                                  p);
            }
            return RenderView("DisplayProduct");
        }

        //This controller is ugly. Do not make controllers like this. 
        public ActionResult InsertProduct(string Title, string ImagePath, string Description, string RelatedProducts, string ProductGroups)
        {

            var p = new Product();
            p.Title = Title;
            p.ImagePath = ImagePath;
            p.Description = Description;
            
            if (!string.IsNullOrEmpty(RelatedProducts))
            {
                Product tmpProduct = null;
                foreach (string s in RelatedProducts.Split(','))
                {
                    tmpProduct = Repository<Product>.Get(s);
                    if (tmpProduct != null) {p.RelatedProducts.Add(tmpProduct);}
                }
            }

            if (!string.IsNullOrEmpty(ProductGroups))
            {
                ProductGroup tmpPG = null;
                foreach(string s in ProductGroups.Split(','))
                {
                    tmpPG = Repository<ProductGroup>.Get(s);
                    if (tmpPG != null) {p.ProductGroups.Add(tmpPG); }
                }
            }

            Repository<Product>.Save(p);
            UnitOfWork.Current.Flush();
            return RedirectToAction(new{Controller="Catalog", Action="ViewProduct", ID=p.Title});
        }

        public ActionResult AddProduct(string ID)
        {
            var d = new AddProductViewData();
            d.RelatedProducts = Repository<Product>.FindAll();
            d.ProductGroups = Repository<ProductGroup>.FindAll();

            return RenderView("AddProduct", d);
        }

        public ActionResult AddProductGroup()
        {
            return RenderView("AddProductGroup");
        }

        public ActionResult InsertProductGroup(string Title)
        {
            ProductGroup pg = new ProductGroup();
            pg.Title = Title;
            Repository<ProductGroup>.Save(pg);
            UnitOfWork.Current.Flush();
            return RenderView("AddProductGroup");
        }   

    }
}