<?php
/*
	Question2Answer by Gideon Greenspan and contributors
	http://www.question2answer.org/

	File: qa-include/qa-page-questions.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 . 'db/selects.php';
require_once QA_INCLUDE_DIR . 'app/format.php';
require_once QA_INCLUDE_DIR . 'app/q-list.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, $categoryid) = qa_db_select_with_pending(
	qa_db_qs_selectspec($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
);

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
);

if (QA_ALLOW_UNINDEXED_QUERIES || !$countslugs) {
	$qa_content['navigation']['sub'] = qa_qs_sub_navigation($sort, $categoryslugs);
}


return $qa_content;