6 files changed, 334 insertions, 0 deletions
diff --git a/app/ExternalLink/AttachmentLink.php b/app/ExternalLink/AttachmentLink.php
new file mode 100644
index 00000000..5a0d1344
--- /dev/null
+++ b/app/ExternalLink/AttachmentLink.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace Kanboard\ExternalLink;
+
+use Kanboard\Core\ExternalLink\ExternalLinkInterface;
+
+/**
+ * Attachment Link
+ *
+ * @package  externalLink
+ * @author   Frederic Guillot
+ */
+class AttachmentLink extends BaseLink implements ExternalLinkInterface
+{
+    /**
+     * Get link title
+     *
+     * @access public
+     * @return string
+     */
+    public function getTitle()
+    {
+        $path = parse_url($this->url, PHP_URL_PATH);
+        return basename($path);
+    }
+}
diff --git a/app/ExternalLink/AttachmentLinkProvider.php b/app/ExternalLink/AttachmentLinkProvider.php
new file mode 100644
index 00000000..706ac1dd
--- /dev/null
+++ b/app/ExternalLink/AttachmentLinkProvider.php
@@ -0,0 +1,117 @@
+<?php
+
+namespace Kanboard\ExternalLink;
+
+use Kanboard\Core\ExternalLink\ExternalLinkProviderInterface;
+
+/**
+ * Attachment Link Provider
+ *
+ * @package  externalLink
+ * @author   Frederic Guillot
+ */
+class AttachmentLinkProvider extends BaseLinkProvider implements ExternalLinkProviderInterface
+{
+    /**
+     * File extensions that are not attachments
+     *
+     * @access protected
+     * @var array
+     */
+    protected $extensions = array(
+        'html',
+        'htm',
+        'xhtml',
+        'php',
+        'jsp',
+        'do',
+        'action',
+        'asp',
+        'aspx',
+        'cgi',
+    );
+
+    /**
+     * Get provider name
+     *
+     * @access public
+     * @return string
+     */
+    public function getName()
+    {
+        return t('Attachment');
+    }
+
+    /**
+     * Get link type
+     *
+     * @access public
+     * @return string
+     */
+    public function getType()
+    {
+        return 'attachment';
+    }
+
+    /**
+     * Get a dictionary of supported dependency types by the provider
+     *
+     * @access public
+     * @return array
+     */
+    public function getDependencies()
+    {
+        return array(
+            'related' => t('Related'),
+        );
+    }
+
+    /**
+     * Return true if the provider can parse correctly the user input
+     *
+     * @access public
+     * @return boolean
+     */
+    public function match()
+    {
+        if (preg_match('/^https?:\/\/.*\.([^\/]+)$/', $this->userInput, $matches)) {
+            return $this->isValidExtension($matches[1]);
+        }
+
+        return false;
+    }
+
+    /**
+     * Get the link found with the properties
+     *
+     * @access public
+     * @return \Kanboard\Core\ExternalLink\ExternalLinkInterface
+     */
+    public function getLink()
+    {
+        $link = new AttachmentLink($this->container);
+        $link->setUrl($this->userInput);
+
+        return $link;
+    }
+
+    /**
+     * Check file extension
+     *
+     * @access protected
+     * @param  string $extension
+     * @return boolean
+     */
+    protected function isValidExtension($extension)
+    {
+        $extension = strtolower($extension);
+
+        foreach ($this->extensions as $ext) {
+            if ($extension === $ext) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+}
diff --git a/app/ExternalLink/BaseLink.php b/app/ExternalLink/BaseLink.php
new file mode 100644
index 00000000..08693ae7
--- /dev/null
+++ b/app/ExternalLink/BaseLink.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace Kanboard\ExternalLink;
+
+use Kanboard\Core\Base;
+
+/**
+ * Base Link
+ *
+ * @package  externalLink
+ * @author   Frederic Guillot
+ */
+abstract class BaseLink extends Base
+{
+    /**
+     * URL
+     *
+     * @access protected
+     * @var string
+     */
+    protected $url = '';
+
+    /**
+     * Get link URL
+     *
+     * @access public
+     * @return string
+     */
+    public function getUrl()
+    {
+        return $this->url;
+    }
+
+    /**
+     * Set link URL
+     *
+     * @access public
+     * @param  string $url
+     */
+    public function setUrl($url)
+    {
+        $this->url = $url;
+    }
+}
diff --git a/app/ExternalLink/BaseLinkProvider.php b/app/ExternalLink/BaseLinkProvider.php
new file mode 100644
index 00000000..749cda94
--- /dev/null
+++ b/app/ExternalLink/BaseLinkProvider.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Kanboard\ExternalLink;
+
+use Kanboard\Core\Base;
+
+/**
+ * Base Link Provider
+ *
+ * @package  externalLink
+ * @author   Frederic Guillot
+ */
+abstract class BaseLinkProvider extends Base
+{
+    /**
+     * User input
+     *
+     * @access protected
+     * @var string
+     */
+    protected $userInput = '';
+
+    /**
+     * Set text entered by the user
+     *
+     * @access public
+     * @param  string $input
+     */
+    public function setUserTextInput($input)
+    {
+        $this->userInput = trim($input);
+    }
+}
diff --git a/app/ExternalLink/WebLink.php b/app/ExternalLink/WebLink.php
new file mode 100644
index 00000000..9338ca42
--- /dev/null
+++ b/app/ExternalLink/WebLink.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Kanboard\ExternalLink;
+
+use Kanboard\Core\ExternalLink\ExternalLinkInterface;
+
+/**
+ * Web Link
+ *
+ * @package  externalLink
+ * @author   Frederic Guillot
+ */
+class WebLink extends BaseLink implements ExternalLinkInterface
+{
+    /**
+     * Get link title
+     *
+     * @access public
+     * @return string
+     */
+    public function getTitle()
+    {
+        $html = $this->httpClient->get($this->url);
+
+        if (preg_match('/<title>(.*)<\/title>/siU', $html, $matches)) {
+            return trim($matches[1]);
+        }
+
+        $components = parse_url($this->url);
+
+        if (! empty($components['host']) && ! empty($components['path'])) {
+            return $components['host'].$components['path'];
+        }
+
+        return t('Title not found');
+    }
+}
diff --git a/app/ExternalLink/WebLinkProvider.php b/app/ExternalLink/WebLinkProvider.php
new file mode 100644
index 00000000..5ec1bbe4
--- /dev/null
+++ b/app/ExternalLink/WebLinkProvider.php
@@ -0,0 +1,77 @@
+<?php
+
+namespace Kanboard\ExternalLink;
+
+use Kanboard\Core\ExternalLink\ExternalLinkProviderInterface;
+
+/**
+ * Web Link Provider
+ *
+ * @package  externalLink
+ * @author   Frederic Guillot
+ */
+class WebLinkProvider extends BaseLinkProvider implements ExternalLinkProviderInterface
+{
+    /**
+     * Get provider name
+     *
+     * @access public
+     * @return string
+     */
+    public function getName()
+    {
+        return t('Web Link');
+    }
+
+    /**
+     * Get link type
+     *
+     * @access public
+     * @return string
+     */
+    public function getType()
+    {
+        return 'weblink';
+    }
+
+    /**
+     * Get a dictionary of supported dependency types by the provider
+     *
+     * @access public
+     * @return array
+     */
+    public function getDependencies()
+    {
+        return array(
+            'related' => t('Related'),
+        );
+    }
+
+    /**
+     * Return true if the provider can parse correctly the user input
+     *
+     * @access public
+     * @return boolean
+     */
+    public function match()
+    {
+        $startWithHttp = strpos($this->userInput, 'http://') === 0 || strpos($this->userInput, 'https://') === 0;
+        $validUrl = filter_var($this->userInput, FILTER_VALIDATE_URL);
+
+        return $startWithHttp && $validUrl;
+    }
+
+    /**
+     * Get the link found with the properties
+     *
+     * @access public
+     * @return \Kanboard\Core\ExternalLink\ExternalLinkInterface
+     */
+    public function getLink()
+    {
+        $link = new WebLink($this->container);
+        $link->setUrl($this->userInput);
+
+        return $link;
+    }
+}