From 9fa26b8e6c8537ac4673f71a7d6c4070d85442f3 Mon Sep 17 00:00:00 2001
From: Tanner McColeman <mccolemantanner@gmail.com>
Date: Tue, 15 Sep 2015 14:55:05 -0700
Subject: [PATCH 1/3] Add colors, adhere to DRY principals

Add the valid color options in a protected property to minimize repetition
---
 lib/Trello/Api/Card/Labels.php | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/lib/Trello/Api/Card/Labels.php b/lib/Trello/Api/Card/Labels.php
index a8cfbfd..350d1a2 100644
--- a/lib/Trello/Api/Card/Labels.php
+++ b/lib/Trello/Api/Card/Labels.php
@@ -14,6 +14,21 @@
 class Labels extends AbstractApi
 {
     protected $path = 'cards/#id#/labels';
+    
+    protected $colors = array(
+        'all',
+        'green',
+        'yellow',
+        'orange',
+        'red',
+        'purple',
+        'blue',
+        'sky',
+        'lime',
+        'pink',
+        'black',
+        'null'
+    );
 
     /**
      * Set a given card's labels
@@ -29,7 +44,7 @@ class Labels extends AbstractApi
     public function set($id, array $labels)
     {
         foreach ($labels as $label) {
-            if (!in_array($label, array('all', 'green', 'yellow', 'orange', 'red', 'purple', 'blue'))) {
+            if (!in_array($label, $this->colors)) {
                 throw new InvalidArgumentException(sprintf('Label "%s" does not exist.', $label));
             }
         }
@@ -52,7 +67,7 @@ public function set($id, array $labels)
      */
     public function remove($id, $label)
     {
-        if (!in_array($label, array('green', 'yellow', 'orange', 'red', 'purple', 'blue'))) {
+        if (!in_array($label, $this->colors)) {
             throw new InvalidArgumentException(sprintf('Label "%s" does not exist.', $label));
         }
 

From 1ecb022dc364be13105ac91805285224dc29c334 Mon Sep 17 00:00:00 2001
From: Tanner McColeman <mccolemantanner@gmail.com>
Date: Tue, 15 Sep 2015 15:00:20 -0700
Subject: [PATCH 2/3] Show board colors by idLabel

Remove the color requirements of Trello\Api\Board\Labels::show() to allow for the use of either a color or ID.
---
 lib/Trello/Api/Board/Labels.php | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/lib/Trello/Api/Board/Labels.php b/lib/Trello/Api/Board/Labels.php
index f924f76..c1033a5 100644
--- a/lib/Trello/Api/Board/Labels.php
+++ b/lib/Trello/Api/Board/Labels.php
@@ -38,21 +38,12 @@ public function all($id, array $params = array())
      * @link https://trello.com/docs/api/board/#get-1-boards-board-id-labels-idlabel
      *
      * @param string $id    the board's id
-     * @param string $color the label's color
+     * @param string $color the label's color or ID
      *
      * @return array
      */
     public function show($id, $color)
     {
-        $colors = array('blue', 'green', 'orange', 'purple', 'red', 'yellow');
-
-        if (!in_array($color, $colors)) {
-            throw new InvalidArgumentException(sprintf(
-                'The "color" parameter must be one of "%s".',
-                implode(", ", $colors)
-            ));
-        }
-
         return $this->get($this->getPath($id).'/'.rawurlencode($color));
     }
 

From 11826fce009501884174fb6d03b9396ffe25f97a Mon Sep 17 00:00:00 2001
From: Tanner McColeman <mccolemantanner@gmail.com>
Date: Tue, 15 Sep 2015 15:40:32 -0700
Subject: [PATCH 3/3] Add Named Label Functionality to Cards

Created the Card\Labels::add() command that allows appending a label (optionally named) to a card.
---
 lib/Trello/Api/Card/Labels.php | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/lib/Trello/Api/Card/Labels.php b/lib/Trello/Api/Card/Labels.php
index 350d1a2..8d65f85 100644
--- a/lib/Trello/Api/Card/Labels.php
+++ b/lib/Trello/Api/Card/Labels.php
@@ -53,6 +53,32 @@ public function set($id, array $labels)
 
         return $this->put($this->getPath($id), array('value' => $labels));
     }
+    
+    /**
+     * Add a label to a given card
+     * @link https://trello.com/docs/api/card/#post-1-cards-card-id-or-shortlink-labels
+     *
+     * @param string $id     the card's id or short link
+     * @param string $color  the label's color
+     * @param string $name   the label's name (optional)
+     *
+     * @return array label info
+     *
+     * @throws InvalidArgumentException If a label does not exist
+     */
+    public function add($id, $color, $name = null)
+    {
+        if (!in_array($color, $this->colors)) {
+            throw new InvalidArgumentException(sprintf('Label "%s" does not exist.', $color));
+        }
+
+        $args = array(
+            'color' => $color,
+            'name' => $name
+        );
+
+        return $this->post($this->getPath($id), $args);
+    }
 
     /**
      * Remove a given label from a given card