implement registration feature

src/application/controller/register.php

@@ -1,21 +1,79 @@
 <?php
 
+// Redirect to the login page on active session
 if (isset($_SESSION['username'])) {
     header('Location: ' . PROJECT_HOST, true, 302);
 }
 
+// Define variables
+$userName       = false;
+$errorUserName  = false;
+
+$blockEstimated = $_modelBlock->getTotal() + 1;
+
 $metaTitle = _('Register | Twisterarmy Cloud');
 
-require(PROJECT_DIR . '/application/view/register.phtml');
+// Check registration enabled
+if (!APPLICATION_ALLOW_REGISTRATION) {
 
-// @TODO welcome message
+    require(PROJECT_DIR . '/application/view/register_off.phtml');
+    exit;
+}
 
-/*
-$metaTitle = _('Welcome | Twisterarmy Cloud');
+// Process form request
+if (isset($_POST) && $_POST) {
 
-$blockEstimated = 0;
-$userName       = 'userName';
-$userPrivateKey = '0000000000000000000000000000000000000000';
+  // Validate userName
+  if (!isset($_POST['userName'])) {
 
-require(PROJECT_DIR . '/application/view/welcome.phtml');
-*/
+    $errorUserName = _('Username value required.');
+
+  } else {
+
+    if (!Valid::userName($_POST['userName'])) {
+
+      $errorUserName = _('Username must contain a-z_0-9 up to 16 chars.');
+    }
+
+    $userName = Filter::userName($_POST['userName']);
+
+    if (!$userName) {
+
+      $errorUserName = _('Username required.');
+    }
+
+    if ($_modelUser->userNameExists($userName)) {
+
+      $errorUserName = _('Username already taken.');
+    }
+  }
+
+  // Request valid
+  if (!$errorUserName) {
+
+    // Generate new wallet
+    if ($userPrivateKey = $_twister->createWalletUser($userName)) {
+
+      // Post new user public key to the network
+      if ($transaction = $_twister->sendNewUserTransaction($userName)) {
+
+        // Prepare Welcome page
+        $metaTitle = _('Welcome | Twisterarmy Cloud');
+
+        require(PROJECT_DIR . '/application/view/welcome.phtml');
+
+        exit;
+
+      } else {
+
+        trigger_error($_twister->getError());
+      }
+
+    } else {
+
+      trigger_error($_twister->getError());
+    }
+  }
+}
+
+require(PROJECT_DIR . '/application/view/register_on.phtml');

src/application/view/register_on.phtml

@@ -0,0 +1,17 @@
+<?php include(PROJECT_DIR . '/application/controller/common/header.php') ?>
+<div class="mw-1024 mx-auto of-hidden">
+  <div class="mw-360 mx-auto my-100 bg-c-4 b-r-3 py-28 px-24">
+    <h1 class="f-size-20 f-normal mb-20"><?php echo _('Register') ?></h1>
+    <form action="register" name="register" method="POST">
+      <input type="text" name="userName" value="<?php echo $userName ?>" placeholder="<?php echo _('Username') ?>" class="input-text mb-22" />
+      <?php if ($errorUserName) { ?>
+      <div class="c-5 mb-22"><?php echo $errorUserName ?></div>
+      <?php } ?>
+      <div class="mt-4">
+        <button type="submit" class="btn btn-1"><?php echo sprintf(_('~ %s'), $blockEstimated) ?></button>
+        <a class="c-1 ml-16" href="login"><?php echo _('Login') ?></a>
+      </div>
+    </form>
+  </div>
+</div>
+<?php include(PROJECT_DIR . '/application/controller/common/footer.php') ?>

src/system/twister.php

@@ -108,4 +108,66 @@ class Twister {
 
     return false;
   }
+
+  public function createWalletUser(string $userName) {
+
+    $this->_curl->prepare(
+      '/',
+      'POST',
+      30,
+      [
+        'jsonrpc' => '2.0',
+        'method'  => 'createwalletuser',
+        'params'  => [
+          $userName
+        ],
+        'id' => time() + rand()
+      ]
+    );
+
+    if ($response = $this->_curl->execute()) {
+
+      if ($response['error']) {
+
+        $this->_error = _($response['error']['message']);
+
+      } else {
+
+        return $response['result'];
+      }
+    }
+
+    return false;
+  }
+
+  public function sendNewUserTransaction(string $userName) {
+
+    $this->_curl->prepare(
+      '/',
+      'POST',
+      30,
+      [
+        'jsonrpc' => '2.0',
+        'method'  => 'sendnewusertransaction',
+        'params'  => [
+          $userName
+        ],
+        'id' => time() + rand()
+      ]
+    );
+
+    if ($response = $this->_curl->execute()) {
+
+      if ($response['error']) {
+
+        $this->_error = _($response['error']['message']);
+
+      } else {
+
+        return $response['result'];
+      }
+    }
+
+    return false;
+  }
 }