using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Web.Mvc;
using Portoa.Web.Util;
using VideoGameQuotes.Api;
using VideoGameQuotes.Web.Validation;

namespace VideoGameQuotes.Web.Models {
	public class QuoteSubmitModel {
		[NonEmptyText(ErrorMessage = "Quote text must be non-empty"), DisplayName("Quote")]
		public string QuoteText { get; set; }
		[DisplayName("Categories")]
		public IList<int> CategoryIds { get; set; }

		public int GameId { get; set; }

		//if a new game is created
		[DisplayName("Name")]
		public string GameName { get; set; }
		[DisplayName("Website")]
		public string GameWebsite { get; set; }
		[DisplayName("Region")]
		public Region GameRegions { get; set; }
		[DisplayName("Publishers")]
		public IList<int> PublisherIds { get; set; }
		[DisplayName("Systems")]
		public IList<int> SystemIds { get; set; }

		//if a new publisher is created
		[DisplayName("Name")]
		public string PublisherName { get; set; }
		[DisplayName("Website")]
		public string PublisherWebsite { get; set; }

		//if a new system is created
		[DisplayName("Name")]
		public string SystemName { get; set; }
		[DisplayName("Abbreviation")]
		public string SystemAbbreviation { get; set; }
		[DisplayName("Release Date")]
		public DateTime SystemReleaseDate { get; set; }

		public IEnumerable<Game> AllGames { get; set; }
		public IEnumerable<GamingSystem> AllSystems { get; set; }
		public IEnumerable<Publisher> AllPublishers { get; set; }
		public IEnumerable<Category> AllCategories { get; set; }

		public IEnumerable<SelectListItem> GetGameList() {
			return new[] { new SelectListItem { Value = "0", Text = "--none--" } }
				.Concat(AllGames.Select(game => new SelectListItem { Value = game.Id.ToString(), Text = game.Name }));
		}

		private static string MakeTable<T>(string tableId, int cellsPerRow, IEnumerable<T> items, Func<T, string> cellDataCallback) {
			var table = new TagBuilder("table");
			table.MergeAttribute("id", tableId);
			var count = 0;
			var row = new TagBuilder("tr");
			var cell = new TagBuilder("td");

			foreach (var item in items) {
				if (count % cellsPerRow == 0) {
					if (count > 0) {
						table.InnerHtml += row.ToString(TagRenderMode.Normal);
					}

					row.InnerHtml = string.Empty;
				}

				cell.InnerHtml = cellDataCallback(item);
				row.InnerHtml += cell.ToString(TagRenderMode.Normal);
				count++;
			}

			if (count > 0) {
				//last row
				table.InnerHtml += row.ToString(TagRenderMode.Normal);
			}

			return table.ToString(TagRenderMode.Normal);
		}

		public string MakePublisherTable(HtmlHelper<QuoteSubmitModel> html, int cellsPerRow = 8) {
			return MakeTable(
				"publisher-checkbox-table",
				cellsPerRow, 
				AllPublishers, 
				publisher => CreateCheckbox(html, "PublisherIds", publisher.Id, "publisher_" + publisher.Id, publisher.Name)
			);
		}

		public string MakeSystemTable(HtmlHelper<QuoteSubmitModel> html, int cellsPerRow = 8) {
			return MakeTable(
				"system-checkbox-table",
				cellsPerRow, 
				AllSystems, 
				system => CreateCheckbox(html, "SystemIds", system.Id, "system_" + system.Id, system.Abbreviation)
			);
		}

		public string MakeCategoryTable(HtmlHelper<QuoteSubmitModel> html, int cellsPerRow = 5) {
			return MakeTable(
				"category-checkbox-table",
				cellsPerRow, 
				AllCategories, 
				category => CreateCheckbox(html, "CategoryIds", category.Id, "category_" + category.Id, category.Name)
			);
		}

		public string MakeRegionTable(HtmlHelper<QuoteSubmitModel> html, int cellsPerRow = 8) {
			return MakeTable(
				"region-checkbox-table",
				cellsPerRow, 
				(IEnumerable<Region>)Enum.GetValues(typeof(Region)), 
				region => CreateCheckbox(html, "GameRegions", region, "region_" + (int)region, region.ToString())
			);
		}

		private static string CreateCheckbox(HtmlHelper<QuoteSubmitModel> html, string name, object value, string id, string labelText) {
			return string.Format("<input type=\"checkbox\" name=\"{0}\" value=\"{1}\" id=\"{2}\"/>", name, value, id)
					+ html.Label(labelText, id);
		}
	}
}