working on cached data

classes/DailyImageWidget.php

@@ -8,12 +8,24 @@ class DailyImageWidget {
       'styles'
     );
     
+    $this->_cache_time = 86400;
+    
     $this->data_source = "http://hubblesite.org/gallery/album/daily_image.php";
     $this->data = false;
     
     $this->has_simplexml = class_exists('SimpleXMLElement');
     
     $this->_valid_column_names = array('title', 'caption', 'date', 'image_url', 'gallery_url', 'credits');
+    $this->_valid_options = array(
+      "image"   => "Daily Image",
+      "title"   => "Image Title",
+      "caption" => "Image Caption",
+      "credits" => "Credits",
+      "styles" => "HubbleSite Styles",
+    );
+    
+    wp_register_sidebar_widget("hubblesite-daily-image", "HubbleSite Daily Image", array($this, "render"));
+    register_widget_control("hubblesite-daily-image", array($this, "render_ui"));
   }
   
   /**
@@ -23,10 +35,7 @@ class DailyImageWidget {
     $display_options = get_option('hubblesite-daily-image-options');
     $this->display_options = array();
     if (!empty($display_options)) {
-      $this->display_options = array_intersect(
+      $this->display_options = array_intersect(explode(",", $display_options), array_keys($this->_valid_options));
-        explode(",", $display_options),
-        array("title", "image", "styles", "caption", "credits")
-      );
     }
     
     if (empty($this->display_options)) {
@@ -77,6 +86,17 @@ class DailyImageWidget {
     }
   }
   
+  function render_ui() {
+    echo "<p>Show on Widget:</p>";
+    
+    foreach ($this->_valid_options as $option => $label) {
+      echo "<label>";
+        echo "<input type=\"checkbox\" name=\"hubblesite[${option}]\" />";
+        echo $label;
+      echo "</label>";
+    }
+  }
+  
   /**
    * Parse a string of XML from the HubbleSite Daily Gallery Image feed.
    */
@@ -142,6 +162,22 @@ class DailyImageWidget {
   function _character_data_handler($parser, $data) {
     $this->_character_data .= $data;
   }
+  
+  function _get_cached_data() {
+    $result = get_option('hubblesite-daily-image-cache');
+    
+    if (is_string($result)) {
+      if (($data = @unserialize($result)) !== false) {
+        list($timestamp, $cached_data) = $data;
+        
+        if (($timestamp + $this->_cache_time) > time()) {
+          $is_valid = (count(array_intersect()) == count($this->_valid_column_names));
+          
+        }
+      }
+    }
+    return false;
+  }
 }
 
 ?>

test/DailyImageWidgetTest.php

@@ -6,9 +6,11 @@ require_once(dirname(__FILE__) . '/../../mockpress/mockpress.php');
 
 class DailyImageWidgetTest extends PHPUnit_Framework_TestCase {
   function setUp() {
+    _reset_wp();
+    
     $this->diw = new DailyImageWidget();
     
-    $this->diw->data = array(
+    $this->sample_data = array(
       'title' => 'title',
       'caption' => 'caption',
       'date' => '12345',
@@ -17,7 +19,13 @@ class DailyImageWidgetTest extends PHPUnit_Framework_TestCase {
       'credits' => 'credits'
     );
     
-    _reset_wp();
+    $this->diw->data = $this->sample_data;    
+  }
+
+  function testWidgetRegistered() {
+     global $wp_test_expectations;     
+     $this->assertEquals("hubblesite-daily-image", $wp_test_expectations['sidebar_widgets'][0]['id']);
+     $this->assertEquals("hubblesite-daily-image", $wp_test_expectations['widget_controls'][0]['name']);
   }
 
   function providerTestRetrieveJunkData() {
@@ -155,19 +163,41 @@ class DailyImageWidgetTest extends PHPUnit_Framework_TestCase {
       );
       
       $this->assertEquals(
-        array(
+        $this->sample_data,
-          'title' => 'title',
-          'caption' => 'caption',
-          'date' => '12345',
-          'image_url' => 'image_url',
-          'gallery_url' => 'gallery_url',
-          'credits' => 'credits'
-        ),
         $result,
         "simplexml? $simplexml"
       );
     }
   }
+  
+  function testWidgetUI() {
+    ob_start();
+    $this->diw->render_ui();
+    $result = ob_get_clean();
+    
+    $this->assertTrue(!empty($result));
+    
+    $this->assertTrue(($xml = _to_xml($result, true)) !== false);
+    foreach ($this->diw->_valid_options as $option => $label) {
+      $xpath = "//label[contains(text(), '${label}')]";      
+      $this->assertTrue(_xpath_test($xml, $xpath, true), $xpath);
+    }    
+  }
+  
+  function testGetCachedData() {
+    $test_time = time() + 86500;
+    update_option('hubblesite-daily-image-cache', serialize(array($test_time, $this->sample_data)));
+    $this->assertEquals(array($test_time, $this->sample_data), $this->diw->_get_cached_data());
+
+    $test_time = time() - 86500;
+    update_option('hubblesite-daily-image-cache', serialize(array($test_time, $this->sample_data)));
+    $this->assertEquals(false, $this->diw->_get_cached_data());
+
+    update_option('hubblesite-daily-image-cache', null);
+    $this->assertEquals(false, $this->diw->_get_cached_data());
+    
+    $this->markTestIncomplete();
+  }
 }
 
 ?>