adding app/models/Data/PasswordLink.php

app/models/Data/PasswordLink.php

@@ -0,0 +1,174 @@
+<?php
+
+namespace App\Model\Data;
+
+use Httpcb\Mvc\Model\Behavior\RandomId as RandomIdBehavior;
+use Phalcon\Forms\Element\Date;
+use Phalcon\Mvc\Model\Behavior\SoftDelete;
+
+class PasswordLink extends Base
+{
+    /**
+     * @var int
+     */
+    protected $id;
+
+    /**
+     * @var string
+     */
+    protected $public_id;
+
+    /**
+     * @var int
+     */
+    protected $user_id;
+
+    /**
+     * @var string
+     */
+    protected $password;
+
+    /**
+     * @var string
+     */
+    protected $date;
+
+    /**
+     * Initialize method for model.
+     */
+    public function initialize()
+    {
+        $this->setSource('password_link');
+        $this->useDynamicUpdate(true);
+
+        // Relationships
+        $this->belongsTo('user_id', User::class, 'id', array('alias' => 'User'));
+
+        // Behaviour
+        $this->addBehavior(new RandomIdBehavior(array(
+            'field' => 'public_id',
+            'length' => 12,
+            'expression' => '(password IS NULL OR HOUR(TIMEDIFF(date, NOW())) = 0)'
+        )));
+
+        $this->addBehavior(new SoftDelete([
+            'field' => 'password',
+            'value' => null
+        ]));
+    }
+
+    /**
+     * @return int
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * @param int $id
+     * @return PasswordLink
+     */
+    public function setId(int $id) : PasswordLink
+    {
+        $this->id = $id;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getPublicId()
+    {
+        return $this->public_id;
+    }
+
+    /**
+     * @param string $public_id
+     * @return PasswordLink
+     */
+    public function setPublicId(string $public_id) : PasswordLink
+    {
+        $this->public_id = $public_id;
+        return $this;
+    }
+
+    /**
+     * @return int
+     */
+    public function getUserId()
+    {
+        return $this->user_id;
+    }
+
+    /**
+     * @param int $user_id
+     * @return PasswordLink
+     */
+    public function setUserId(int $user_id) : PasswordLink
+    {
+        $this->user_id = $user_id;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getPassword()
+    {
+        return $this->password;
+    }
+
+    /**
+     * @param string $password
+     * @return PasswordLink
+     */
+    public function setPassword(string $password) : PasswordLink
+    {
+        $this->password = $password;
+        return $this;
+    }
+
+    /**
+     * Has the link been used?
+     *
+     * @return bool
+     */
+    public function isUsed() : bool
+    {
+        return strlen($this->password) < 1;
+    }
+
+    /**
+     * Is the link still valid?
+     *
+     * @return bool
+     */
+    public function isValid() : bool
+    {
+        // Used links are not valid.
+        if ($this->isUsed()) {
+            return false;
+        }
+
+        $date = new \DateTime($this->date);
+        $now = new \DateTime();
+
+        // Get the differerence in hours.
+        $diff = $now->format('U') - $date->format('U');
+        $diff = ($diff / 60) / 60;
+
+        // Only valid for an hour.
+        return $diff >= 0 && $diff <= 1;
+    }
+
+    public function beforeCreate()
+    {
+        // Creating a new link automatically removes old ones.
+        $links = self::find(["user_id = ?0", 'bind' => [ $this->user_id ]]);
+
+        foreach($links as $link) {
+            $link->delete();
+        }
+    }
+}