<?php
/*

	File: king-include/king-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: LICENCE.html
*/

	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 = qa_post_text('code') ?? (string)qa_get('c');
	$incode = trim($incode);
	$inhandle = qa_post_text('username') ?? (string)qa_get('u');
	$inhandle = trim($inhandle);
	$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.'king-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.'king-db/selects.php';
		require_once QA_INCLUDE_DIR.'king-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['error']=qa_lang_html('users/confirm_emailed'); // not an error, but display it prominently anyway

	elseif ($userconfirmed) {
		$qa_content['error']=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.'king-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;


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