<?php

/*
	Question2Answer (c) Gideon Greenspan

	http://www.question2answer.org/

	
	File: qa-include/qa-page-questions.php
	Version: See define()s at top of qa-include/qa-base.php
	Description: Controller for page listing recent questions


	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.
	
	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	More about this license: http://www.question2answer.org/license.php
*/

	if (!defined('QA_VERSION')) { // don't allow this page to be requested directly from browser
		header('Location: ../');
		exit;
	}

	require_once QA_INCLUDE_DIR.'qa-db-selects.php';
	require_once QA_INCLUDE_DIR.'qa-app-format.php';
	require_once QA_INCLUDE_DIR.'qa-app-q-list.php';
	require_once QA_INCLUDE_DIR.'qa-app-updates.php';
	
	$categoryslugs=qa_request_parts(1);
	$countslugs=count($categoryslugs);
	
	$sort=($countslugs && !QA_ALLOW_UNINDEXED_QUERIES) ? null : qa_get('sort');
	$start=qa_get_start();
	$userid=qa_get_logged_in_userid();


//	Get list of questions, plus category information

	switch ($sort) {
		case 'hot':
			$selectsort='hotness';
			break;
		
		case 'votes':
			$selectsort='netvotes';
			break;
			
		case 'answers':
			$selectsort='acount';
			break;
			
		case 'views':
			$selectsort='views';
			break;
		
		default:
			$selectsort='created';
			break;
	}
	
	@list($questions, $categories, $categoryid, $favorite)=qa_db_select_with_pending(
		qa_db_qs_selectspec($userid, $selectsort, $start, $categoryslugs, null, false, false, qa_opt_if_loaded('page_size_qs')),
		qa_db_category_nav_selectspec($categoryslugs, false, false, true),
		$countslugs ? qa_db_slugs_to_category_id_selectspec($categoryslugs) : null,
		($countslugs && isset($userid)) ? qa_db_is_favorite_selectspec($userid, QA_ENTITY_CATEGORY, $categoryslugs) : null
	);
	
	if ($countslugs) {
		if (!isset($categoryid))
			return include QA_INCLUDE_DIR.'qa-page-not-found.php';
	
		$categorytitlehtml=qa_html($categories[$categoryid]['title']);
		$nonetitle=qa_lang_html_sub('main/no_questions_in_x', $categorytitlehtml);

	} else
		$nonetitle=qa_lang_html('main/no_questions_found');
	

	$categorypathprefix=QA_ALLOW_UNINDEXED_QUERIES ? 'questions/' : null; // this default is applied if sorted not by recent
	$feedpathprefix=null;
	$linkparams=array('sort' => $sort);
	
	switch ($sort) {
		case 'hot':
			$sometitle=$countslugs ? qa_lang_html_sub('main/hot_qs_in_x', $categorytitlehtml) : qa_lang_html('main/hot_qs_title');
			$feedpathprefix=qa_opt('feed_for_hot') ? 'hot' : null;
			break;
			
		case 'votes':
			$sometitle=$countslugs ? qa_lang_html_sub('main/voted_qs_in_x', $categorytitlehtml) : qa_lang_html('main/voted_qs_title');
			break;
			
		case 'answers':
			$sometitle=$countslugs ? qa_lang_html_sub('main/answered_qs_in_x', $categorytitlehtml) : qa_lang_html('main/answered_qs_title');
			break;
		
		case 'views':
			$sometitle=$countslugs ? qa_lang_html_sub('main/viewed_qs_in_x', $categorytitlehtml) : qa_lang_html('main/viewed_qs_title');
			break;
		
		default:
			$linkparams=array();
			$sometitle=$countslugs ? qa_lang_html_sub('main/recent_qs_in_x', $categorytitlehtml) : qa_lang_html('main/recent_qs_title');
			$categorypathprefix='questions/';
			$feedpathprefix=qa_opt('feed_for_questions') ? 'questions' : null;
			break;
	}

	
//	Prepare and return content for theme

	$qa_content=qa_q_list_page_content(
		$questions, // questions
		qa_opt('page_size_qs'), // questions per page
		$start, // start offset
		$countslugs ? $categories[$categoryid]['qcount'] : qa_opt('cache_qcount'), // total count
		$sometitle, // title if some questions
		$nonetitle, // title if no questions
		$categories, // categories for navigation
		$categoryid, // selected category id
		true, // show question counts in category navigation
		$categorypathprefix, // prefix for links in category navigation
		$feedpathprefix, // prefix for RSS feed paths
		$countslugs ? qa_html_suggest_qs_tags(qa_using_tags()) : qa_html_suggest_ask($categoryid), // suggest what to do next
		$linkparams, // extra parameters for page links
		$linkparams, // category nav params
		$favorite // has used favorited this category
	);
	
	if (QA_ALLOW_UNINDEXED_QUERIES || !$countslugs)
		$qa_content['navigation']['sub']=qa_qs_sub_navigation($sort, $categoryslugs);

	
	return $qa_content;


/*
	Omit PHP closing tag to help avoid accidental output
*/