using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Xml.Linq;
using FLocal.Common;
using FLocal.Common.dataobjects;
using FLocal.Core;
using FLocal.Core.DB;
using FLocal.Core.DB.conditions;

namespace FLocal.IISHandler.handlers {

	class ThreadHandler : AbstractGetHandler {

		override protected string templateName {
			get {
				return "Thread.xslt";
			}
		}

		override protected XElement[] getSpecificData(WebContext context) {
			Thread thread = Thread.LoadById(int.Parse(context.requestParts[1]));
			PageOuter pageOuter = PageOuter.createFromGet(
				context.requestParts,
				context.userSettings.postsPerPage,
				new Dictionary<char,Func<long>> {
					{
						'p',
						() => Config.instance.mainConnection.GetCountByConditions(
							Post.TableSpec.instance,
							new ComplexCondition(
								ConditionsJoinType.AND,
								new List<NotEmptyCondition> {
									new ComparisonCondition(
										Post.TableSpec.instance.getColumnSpec(Post.TableSpec.FIELD_THREADID),
										ComparisonType.EQUAL,
										thread.id.ToString()
									),
									new ComparisonCondition(
										Post.TableSpec.instance.getIdSpec(),
										ComparisonType.LESSTHAN,
										int.Parse(context.requestParts[2].PHPSubstring(1)).ToString()
									),
								}
							),
							new JoinSpec[0]
						)
					}
				}
			);
			IEnumerable<Post> posts = thread.getPosts(pageOuter, context);
			thread.incrementViewsCounter();
			return new XElement[] {
				new XElement("currentLocation", thread.exportToXmlSimpleWithParent(context)),
				new XElement("posts",
					from post in posts select post.exportToXmlWithoutThread(context, true),
					pageOuter.exportToXml(2, 5, 2)
				)
			};
		}

	}

}