add TwingleCampaign api actions

api/v3/TwingleCampaign/Get.php

@@ -0,0 +1,45 @@
+<?php
+use CRM_TwingleCampaign_ExtensionUtil as E;
+
+/**
+ * TwingleCampaign.Get API specification (optional)
+ * This is used for documentation and validation.
+ *
+ * @param array $spec description of fields supported by this API call
+ *
+ * @see https://docs.civicrm.org/dev/en/latest/framework/api-architecture/
+ */
+function _civicrm_api3_twingle_campaign_Get_spec(&$spec) {
+  $spec['magicword']['api.required'] = 1;
+}
+
+/**
+ * TwingleCampaign.Get API
+ *
+ * @param array $params
+ *
+ * @return array
+ *   API result descriptor
+ *
+ * @see civicrm_api3_create_success
+ *
+ * @throws API_Exception
+ */
+function civicrm_api3_twingle_campaign_Get($params) {
+  if (array_key_exists('magicword', $params) && $params['magicword'] == 'sesame') {
+    $returnValues = array(
+      // OK, return several data rows
+      12 => ['id' => 12, 'name' => 'Twelve'],
+      34 => ['id' => 34, 'name' => 'Thirty four'],
+      56 => ['id' => 56, 'name' => 'Fifty six'],
+    );
+    // ALTERNATIVE: $returnValues = []; // OK, success
+    // ALTERNATIVE: $returnValues = ["Some value"]; // OK, return a single value
+
+    // Spec: civicrm_api3_create_success($values = 1, $params = [], $entity = NULL, $action = NULL)
+    return civicrm_api3_create_success($returnValues, $params, 'TwingleCampaign', 'Get');
+  }
+  else {
+    throw new API_Exception(/*error_message*/ 'Everyone knows that the magicword is "sesame"', /*error_code*/ 'magicword_incorrect');
+  }
+}