Add template field, send using substitution data

Refs #10

Author: Rich Leland

trunk/admin.widget.class.php

@@ -131,6 +131,7 @@ public function admin_page_init()
         add_settings_field('sending_method', 'Method*', array($this, 'render_sending_method_field'), 'sp-options', 'general');
         add_settings_field('password', 'API Key*', array($this, 'render_password_field'), 'sp-options', 'general');
         add_settings_field('enable_tracking', 'Enable tracking*', array($this, 'render_enable_tracking_field'), 'sp-options', 'general');
+        add_settings_field('template', 'Template*', array($this, 'render_template_field'), 'sp-options', 'general');
 
         add_settings_section('overrides', 'Overrides', null, 'sp-overrides');
         add_settings_field('from_name', 'From name', array($this, 'render_from_name_field'), 'sp-overrides', 'overrides');
@@ -154,6 +155,10 @@ public function sanitize($input)
             $new_input['from_name'] = trim($input['from_name']);
         }
 
+        if (!empty($input['template'])) {
+            $new_input['template'] = trim($input['template']);
+        }
+
         if (empty($input['password'])) {
             add_settings_error('Password', esc_attr('password'), 'API Key is required', 'error');
         } else {
@@ -222,6 +227,14 @@ public function render_password_field()
         );
     }
 
+    public function render_template_field()
+    {
+        printf(
+            '<input type="text" id="template" name="sp_settings[template]" class="regular-text" value="%s" /><br/>',
+            isset($this->options['template']) ? $this->options['template'] : ''
+        );
+    }
+
     public function render_from_email_field()
     {
         $hint = 'Important: Domain must match with one of your verified sending domains.';

trunk/mailer.http.class.php

@@ -62,17 +62,22 @@ protected function get_request_body()
             )
         );
 
-        switch ($this->ContentType) {
-            case 'multipart/alternative':
-                $body['content']['html'] = $this->Body;
-                $body['content']['text'] = $this->AltBody;
-                break;
-            case 'text/plain':
-                $body['content']['text'] = $this->Body;
-                break;
-            default:
-                $body['content']['html'] = $this->Body;
-                break;
+        if (!empty($this->options['template'])) {
+          $body['content']['template_id'] = $this->options['template'];
+          $body['substitution_data']['content'] = $this->Body;
+        } else {
+          switch($this->ContentType) {
+              case 'multipart/alternative':
+                  $body['content']['html'] = $this->Body;
+                  $body['content']['text'] = $this->AltBody;
+                  break;
+              case 'text/plain':
+                  $body['content']['text'] = $this->Body;
+                  break;
+              default:
+                  $body['content']['html'] = $this->Body;
+                  break;
+          }
         }
 
         $replyTo = $this->get_reply_to();
@@ -242,4 +247,4 @@ protected function get_headers()
 
         return $formatted_headers;
     }
-}
+}

trunk/sparkpost.class.php

@@ -16,7 +16,8 @@ class SparkPost
         'from_name' => '',
         'from_email' => '',
         'enable_sparkpost' => false,
-        'enable_tracking' => true
+        'enable_tracking' => true,
+        'template' => ''
     );
 
     var $options;