Adds one entry point for both JSON and MP APIs

Removes endpoints folder and moves versions to the root
JSON API folder

lib/API/JSON/v1/ImportExport.php

@@ -0,0 +1,75 @@
+<?php
+namespace MailPoet\API\JSON\v1;
+use MailPoet\API\JSON\Endpoint as APIEndpoint;
+
+use MailPoet\Subscribers\ImportExport\Import\MailChimp;
+use MailPoet\Models\Segment;
+
+if(!defined('ABSPATH')) exit;
+
+class ImportExport extends APIEndpoint {
+  function getMailChimpLists($data) {
+    try {
+      $mailChimp = new MailChimp($data['api_key']);
+      $lists = $mailChimp->getLists();
+      return $this->successResponse($lists);
+    } catch(\Exception $e) {
+      return $this->errorResponse(array(
+        $e->getCode() => $e->getMessage()
+      ));
+    }
+  }
+
+  function getMailChimpSubscribers($data) {
+    try {
+      $mailChimp = new MailChimp($data['api_key']);
+      $subscribers = $mailChimp->getSubscribers($data['lists']);
+      return $this->successResponse($subscribers);
+    } catch(\Exception $e) {
+      return $this->errorResponse(array(
+        $e->getCode() => $e->getMessage()
+      ));
+    }
+  }
+
+  function addSegment($data) {
+    $segment = Segment::createOrUpdate($data);
+    $errors = $segment->getErrors();
+
+    if(!empty($errors)) {
+      return $this->errorResponse($errors);
+    } else {
+      return $this->successResponse(
+        Segment::findOne($segment->id)->asArray()
+      );
+    }
+  }
+
+  function processImport($data) {
+    try {
+      $import = new \MailPoet\Subscribers\ImportExport\Import\Import(
+        json_decode($data, true)
+      );
+      $process = $import->process();
+      return $this->successResponse($process);
+    } catch(\Exception $e) {
+      return $this->errorResponse(array(
+        $e->getCode() => $e->getMessage()
+      ));
+    }
+  }
+
+  function processExport($data) {
+    try {
+      $export = new \MailPoet\Subscribers\ImportExport\Export\Export(
+        json_decode($data, true)
+      );
+      $process = $export->process();
+      return $this->successResponse($process);
+    } catch(\Exception $e) {
+      return $this->errorResponse(array(
+        $e->getCode() => $e->getMessage()
+      ));
+    }
+  }
+}