<?php # Script 17.8 - secure register.php
// This script performs an INSERT query to add a record to the mb_users table.
 
include (CHAPTER_PATH.'/'.$chapter.'/includes/17.1.php');

// check if registration form has been submitted
if($_SERVER['REQUEST_METHOD'] == 'POST') {

	// create error array 
	$errors = array();

	// check each field for validity, assign error message if fails
	// first_name
	// if (empty($_POST['first_name'])) {
	// 	$errors['fn'] = 'Please enter your first name.';
	// } else {
	// 	$fn = mysqli_real_escape_string($link,trim($_POST['first_name']));
	// }

	// // last_name
	// if (empty($_POST['last_name'])) {
	// 	$errors['ln'] = 'Please enter your last name.';
	// } else {
	// 	$ln = mysqli_real_escape_string($link,trim($_POST['last_name']));
	// }

	// user_name - must be unique
	if (empty($_POST['user_name'])) {
		$errors['un'] = 'Please enter a user name.';
	} else {
		$un = mysqli_real_escape_string($link,trim($_POST['user_name']));
		//prevent users with duplicate user names
		$q = "SELECT user_id FROM mb_users WHERE user_name='$un'";
		if ($r = @mysqli_query($link, $q)) {
			if(mysqli_num_rows($r) != 0) {
				$errors['un'] = 'Sorry, that user name has already been used. Please enter a different user name.';
			}
			// free result set 
			mysqli_free_result($r);
		}	
	}

	// email - must be unique
	if (empty($_POST['email'])) {
		$errors['e'] = 'Please enter an email address.';
	} elseif (!(filter_var(trim($_POST['email']), FILTER_VALIDATE_EMAIL))) {
		$errors['e'] = 'Your email is not in a valid format.';
	} else {
		$e = mysqli_real_escape_string($link,trim($_POST['email']));
		//prevent users with duplicate email addresses
		$q = "SELECT user_id FROM mb_users WHERE email='$e'";
		if ($r = @mysqli_query($link, $q)) {
			if(mysqli_num_rows($r) != 0) {
				$errors['e'] = 'Sorry, that email has already been used. Please enter a different email address.';
			}
			// free result set 
			mysqli_free_result($r);
		}	
	}		
	
	// pass1==pass2
	if (!empty($_POST['pass1'])) {
		if ($_POST['pass1'] != $_POST['pass2']) {
			$errors['p2'] = 'Your passwords do not match.';
		} else {
			$p = mysqli_real_escape_string($link,trim($_POST['pass1']));
		}
	} else {
		$errors['p1'] = 'Please enter a password.';
	}

	// lid
	if (empty($_POST['lid'])) {
		$errors['lang'] = 'Please select your preferred language.';
	} else {
		$lid = mysqli_real_escape_string($link,trim($_POST['lid']));
	}
	// time_zone
	if (empty($_POST['time_zone'])) {
		$errors['tz'] = 'Please select your time zone.';
	} else {
		$time_zone = mysqli_real_escape_string($link,trim($_POST['time_zone']));
	}

	if(empty($errors)) { // if no errors

		// build query
		$q= "INSERT INTO mb_users (username,email,pass,lang_id,time_zone) VALUES ('$un','$e',SHA1('$p'),'$lid','$time_zone')";
		// $q = "ERROR";

		// submit data
		if($r = mysqli_query($link,$q)) {

			if(mysqli_affected_rows($link) == 1) {
				// data successfully inserted
				$message = "<h2>Thank you!</h2><p>Your name has been added to our list of users!</p>";
			} else {
				// error - data not inserted
				$message = "<h2>System Error</h2><p class='error'>Your information could not be added to our database.<br />We apologize for any inconvenience, please <a href='javascript:history.back()'>try again</a>.</p>";
				$message .= '<p><span class="content-caption">Debugging information</span>Error message: <br />'.mysqli_error($link).'<br /><br />Query: <br />'. $q .'</p>';
			}
			
			// free result set -- not needed because insert statement returns boolean value
			//mysqli_free_result($r);

		} else {
			//query unsuccessful
			$message = '<h2>Error</h2><p class="error-message error">There was an error accessing the database. Please try again later.</p>';	
		}
		
		// provide feedback from submission
		echo '<div id="content" class="message">'.$message.'</div>';

		// include footer
		include (CHAPTER_PATH.'/'.$chapter.'/includes/17.2.php');
		
		// exit script - do not redisplay form
		exit(); 

	} else {
		$errors['flag'] = "<div class='error-message error'><h2>Error</h2><p>Your registration is not complete.<br />Please doublecheck your information and resubmit after correcting the highlighted errors.</p></div>";
	}
	
}
// begin form output. if submitted with errors - include original submission values with error messages
?>
<h1><?php echo $words['register']; ?></h1>
<?php echo (isset($errors['flag']))? $errors['flag'] : ''; ?>
<form action="" method="post">
	<!-- <p>
		<label for='fn'>First Name: </label>
		<input type="text" id='fn' name="first_name" size="15" maxlength="20" value="<?php if (isset($_POST['first_name'])) echo $_POST['first_name']; ?>" />
		<?php echo (isset($errors['fn']))?'<span class="error">'.$errors['fn'].'</span>' : ''; ?>
	</p>
	<p>
		<label for='ln'>Last Name: </label>
		<input type="text" id='ln' name="last_name" size="15" maxlength="40" value="<?php if (isset($_POST['last_name'])) echo $_POST['last_name']; ?>" />
		<?php echo (isset($errors['ln']))?'<span class="error">'.$errors['ln'].'</span>' : ''; ?>
	</p> -->
	<p>
		<label for='un'>User Name: </label>
		<input type="text" id='un' name="user_name" size="15" maxlength="40" value="<?php if (isset($_POST['user_name'])) echo $_POST['user_name']; ?>" />
		<?php echo (isset($errors['un']))?'<span class="error">'.$errors['un'].'</span>' : ''; ?>
	</p>
	<p>
		<label for='e'>Email Address: </label>
		<input type="text" id='e' name="email" size="20" maxlength="60" value="<?php if (isset($_POST['email'])) echo $_POST['email']; ?>"  />
		<?php echo (isset($errors['e']))?'<span class="error">'.$errors['e'].'</span>' : ''; ?>
	</p>
	<p>
		<label for='p1'>Password: </label>
		<input type="password" id='p1' name="pass1" size="10" maxlength="20" value="<?php if (isset($_POST['pass1'])) echo $_POST['pass1']; ?>"  />
		<?php echo (isset($errors['p1']))?'<span class="error">'.$errors['p1'].'</span>' : ''; ?>
	</p>
	<p>
		<label for='p2'>Confirm Password: </label>
		<input type="password" id='p2' name="pass2" size="10" maxlength="20" value="<?php if (isset($_POST['pass2'])) echo $_POST['pass2']; ?>"  />
		<?php echo (isset($errors['p2']))?'<span class="error">'.$errors['p2'].'</span>' : ''; ?>
	</p>
	<p>
		<label for='lang'>Preferred Language: </label>
		<?php
			// Select drop down choose a preferred language:
			echo '<select id="lang" name="lid">';
			echo '<option value="0">' . $words['select'] . '</option>';
			// Retrieve all the languages...
			$q = "SELECT lang_id, lang, image, lang_eng FROM mb_languages ORDER BY lang_eng ASC";
			$r = mysqli_query($link, $q); 
			if (mysqli_num_rows($r) > 0) {
				while ($menu_row = mysqli_fetch_array($r, MYSQLI_NUM)) {
					echo "<option";
					if (isset($_POST['lid']) && $menu_row[0] == $_POST['lid']) {
						echo " selected='selected'";
					} elseif(isset($_SESSION['lid']) && $menu_row[0] == $_SESSION['lid']) {
						echo " selected='selected'";
					}
					// echo (isset($_POST['lid']) && $menu_row[0] == $_POST['lid'])?" selected='selected'":'';
					echo " value=\"$menu_row[0]\" >$menu_row[1]/$menu_row[3]</option>\n";
				}
			}
			mysqli_free_result($r);
			echo '</select>';
		?>
		<!-- <input type="text" id='lang' name="language" size="15" maxlength="40" value="<?php if (isset($_POST['language'])) echo $_POST['language']; ?>" /> -->
		<?php echo (isset($errors['lang']))?'<span class="error">'.$errors['lang'].'</span>' : ''; ?>
	</p>
	<p>
		<label for='tz'>Your Time Zone: </label>
		<?php
			// Select drop down choose a timezone:
			echo '<select id="tz" name="time_zone">';
			echo '<option value="0">' . $words['select'] . '</option>';
			// Retrieve all the timezones...
			$q = "SELECT DISTINCT(time_zone) FROM mb_users ORDER BY time_zone ASC";
			$r = mysqli_query($link, $q); 
			if (mysqli_num_rows($r) > 0) {
				while ($menu_row = mysqli_fetch_array($r, MYSQLI_NUM)) {
					echo "<option";
					echo (isset($_POST['time_zone']) && $menu_row[0] == $_POST['time_zone'])?" selected='selected'":'';
					echo " value=\"$menu_row[0]\" >$menu_row[0]</option>\n";
				}
			}
			mysqli_free_result($r);
			echo '</select>';
		?>
		<?php echo (isset($errors['tz']))?'<span class="error">'.$errors['tz'].'</span>' : ''; ?>
	</p>
	<p>
		<input type="submit" name="submit" value="<?php echo $words['register']; ?>" />
	</p>
</form>
<?php
include (CHAPTER_PATH.'/'.$chapter.'/includes/17.2.php');
?>