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

	File: qa-include/qa-page-confirm.php
	Description: Controller for email confirmation page (can also request a new code)


	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;
}


//	Check we're not using single-sign on integration, that we're not already confirmed, and that we're not blocked

if (QA_FINAL_EXTERNAL_USERS)
	qa_fatal_error('User login is handled by external code');


//	Check if we've been asked to send a new link or have a successful email confirmation

$incode = trim(qa_get('c')); // trim to prevent passing in blank values to match uninitiated DB rows
$inhandle = qa_get('u');
$loginuserid = qa_get_logged_in_userid();
$useremailed = false;
$userconfirmed = false;

if (isset($loginuserid) && qa_clicked('dosendconfirm')) { // button clicked to send a link
	require_once QA_INCLUDE_DIR . 'app/users-edit.php';

	if (!qa_check_form_security_code('confirm', qa_post_text('code')))
		$pageerror = qa_lang_html('misc/form_security_again');

	else {
		qa_send_new_confirm($loginuserid);
		$useremailed = true;
	}

} elseif (strlen($incode)) { // non-empty code detected from the URL
	require_once QA_INCLUDE_DIR . 'db/selects.php';
	require_once QA_INCLUDE_DIR . 'app/users-edit.php';

	if (!empty($inhandle)) { // match based on code and handle provided on URL
		$userinfo = qa_db_select_with_pending(qa_db_user_account_selectspec($inhandle, false));

		if (strtolower(trim(@$userinfo['emailcode'])) == strtolower($incode)) {
			qa_complete_confirm($userinfo['userid'], $userinfo['email'], $userinfo['handle']);
			$userconfirmed = true;
		}
	}

	if ((!$userconfirmed) && isset($loginuserid)) { // as a backup, also match code on URL against logged in user
		$userinfo = qa_db_select_with_pending(qa_db_user_account_selectspec($loginuserid, true));
		$flags = $userinfo['flags'];

		if (($flags & QA_USER_FLAGS_EMAIL_CONFIRMED) && !($flags & QA_USER_FLAGS_MUST_CONFIRM))
			$userconfirmed = true; // if they confirmed before, just show message as if it happened now

		elseif (strtolower(trim($userinfo['emailcode'])) == strtolower($incode)) {
			qa_complete_confirm($userinfo['userid'], $userinfo['email'], $userinfo['handle']);
			$userconfirmed = true;
		}
	}
}


//	Prepare content for theme

$qa_content = qa_content_prepare();

$qa_content['title'] = qa_lang_html('users/confirm_title');
$qa_content['error'] = @$pageerror;

if ($useremailed) {
	$qa_content['success'] = qa_lang_html('users/confirm_emailed');

} elseif ($userconfirmed) {
	$qa_content['success'] = qa_lang_html('users/confirm_complete');

	if (!isset($loginuserid)) {
		$qa_content['suggest_next'] = strtr(
			qa_lang_html('users/log_in_to_access'),
			array(
				'^1' => '<a href="' . qa_path_html('login', array('e' => $inhandle)) . '">',
				'^2' => '</a>',
			)
		);
	}

} elseif (isset($loginuserid)) { // if logged in, allow sending a fresh link
	require_once QA_INCLUDE_DIR . 'util/string.php';

	if (strlen($incode))
		$qa_content['error'] = qa_lang_html('users/confirm_wrong_resend');

	$email = qa_get_logged_in_email();

	$qa_content['form'] = array(
		'tags' => 'method="post" action="' . qa_path_html('confirm') . '"',

		'style' => 'tall',

		'fields' => array(
			'email' => array(
				'label' => qa_lang_html('users/email_label'),
				'value' => qa_html($email) . strtr(qa_lang_html('users/change_email_link'), array(
						'^1' => '<a href="' . qa_path_html('account') . '">',
						'^2' => '</a>',
					)),
				'type' => 'static',
			),
		),

		'buttons' => array(
			'send' => array(
				'tags' => 'name="dosendconfirm"',
				'label' => qa_lang_html('users/send_confirm_button'),
			),
		),

		'hidden' => array(
			'code' => qa_get_form_security_code('confirm'),
		),
	);

	if (!qa_email_validate($email)) {
		$qa_content['error'] = qa_lang_html('users/email_invalid');
		unset($qa_content['form']['buttons']['send']);
	}

} else
	$qa_content['error'] = qa_insert_login_links(qa_lang_html('users/confirm_wrong_log_in'), 'confirm');


return $qa_content;
