add xml exposer prototype

src/classes/tainacan-creator.php

@@ -10,6 +10,7 @@ const TAPI_DIR          = __DIR__ . '/../api/';
 const ENDPOINTS_DIR    = __DIR__ . '/../api/endpoints/';
 const HELPERS_DIR      = __DIR__ . '/../helpers/';
 const IMPORTER_DIR      = __DIR__ . '/../importer/';
+const EXPOSERS_DIR		= __DIR__ . '/../exposers/';
 
 const DIRS = [
     CLASSES_DIR,
@@ -20,12 +21,14 @@ const DIRS = [
     TRAITS_DIR,
 	TAPI_DIR,
 	ENDPOINTS_DIR,
-    IMPORTER_DIR
+    IMPORTER_DIR,
+	EXPOSERS_DIR
 ];
 
 require_once(VENDOR_DIR . 'autoload.php');
 require_once(HELPERS_DIR . 'class-tainacan-helpers-html.php');
 require_once(IMPORTER_DIR . 'class-tainacan-importer.php');
+require_once(EXPOSERS_DIR . 'class-tainacan-exposers.php');
 
 spl_autoload_register('tainacan_autoload');
 
@@ -47,21 +50,24 @@ function tainacan_autoload($class_name){
 
     	if( isset( $class_path[1] ) && $class_path[1] === 'Importer' ){
             $dir = IMPORTER_DIR;
-        } else if($sliced) {
+    	} else if( isset( $class_path[1] ) && $class_path[1] === 'Exposers' ){
+    		$dir = EXPOSERS_DIR;
+    		if(count($class_path) > 3) $dir .= strtolower($class_path[2]).DIRECTORY_SEPARATOR;
+    	} else if($sliced) {
 		    $lower     = $sliced[0];
 		    $sliced[0] = strtolower( $lower );
 
-		    $dir = implode( DIRECTORY_SEPARATOR, $sliced ) . '/';
+		    $dir = implode( DIRECTORY_SEPARATOR, $sliced ) . DIRECTORY_SEPARATOR;
 		    $dir = CLASSES_DIR . str_replace( '_', '-', $dir );
 	    } else {
 		    $dir = CLASSES_DIR;
 	    }
 
-        if( in_array('Field_Types', $class_path) || in_array('Filter_Types', $class_path) ){
+	    if( in_array('Field_Types', $class_path) || in_array('Filter_Types', $class_path) ){
             if(  in_array('Filter_Types', $class_path) && in_array('Category', $class_path) ){
                 $dir = strtolower( $dir );
             } else {
-                $dir.= strtolower(str_replace('_', '-' , $class_name)).'/';
+                $dir.= strtolower(str_replace('_', '-' , $class_name)).DIRECTORY_SEPARATOR;
             }
         }
 
@@ -116,4 +122,9 @@ $Tainacan_Terms = new \Tainacan\Repositories\Terms();
 global $Tainacan_Logs;
 $Tainacan_Logs = new \Tainacan\Repositories\Logs();
 
+global $Tainacan_Exposers;
+$Tainacan_Exposers = new \Tainacan\Exposers\Exposers();
+
+$Tainacan_Exposers->register_exposer_type('Tainacan\Exposers\Types\Xml');
+
 ?>

src/exposers/class-tainacan-exposers.php

@@ -0,0 +1,58 @@
+<?php
+namespace Tainacan\Exposers;
+
+defined( 'ABSPATH' ) or die( 'No script kiddies please!' );
+
+/**
+ * Load exposers classes
+ */ 
+class Exposers {
+	
+	private $types = [];
+	private $mappers = [];
+	
+	public function __construct() {
+		add_filter( 'rest_request_after_callbacks', [$this, 'rest_request_after_callbacks'], 10, 3 );
+		add_filter( 'tainacan-rest-response', [$this, 'rest_response'], 10, 2 );
+	}
+	
+	/**
+	 * register exposers types class on array of types
+	 *
+	 * @param $class_name string | object The class name or the instance
+	 */
+	public function register_exposer_type( $class_name ){
+		if( is_object( $class_name ) ){
+			$class_name = get_class( $class_name );
+		}
+		
+		if(!in_array( $class_name, $this->types)){
+			$this->types[] = $class_name;
+		}
+	}
+	
+	public function rest_response($item_arr, $request) {
+		return $item_arr;
+	}
+	
+	/**
+	 * 
+	 * @param \WP_REST_Response $response
+	 * @param \WP_REST_Server $handler
+	 * @param \WP_REST_Request $request
+	 * @return \WP_REST_Response
+	 */
+	public function rest_request_after_callbacks( $response, $handler, $request ) {
+		if($request->get_method() == 'GET' && substr($request->get_route(), 0, strlen('/tainacan/v2')) == '/tainacan/v2') {
+			$body = json_decode( $request->get_body(), true );
+			if(is_array($body) && array_key_exists('exposer-type', $body) &&
+			in_array('Tainacan\Exposers\Types\\'.sanitize_text_field($body['exposer-type']), $this->types) ) {
+				$type = '\Tainacan\Exposers\Types\\'.sanitize_text_field($body['exposer-type']);
+				$exposer = new $type;
+				return $exposer->rest_request_after_callbacks($response, $handler, $request);
+			}
+		}
+		// default JSON response
+		return $response;
+	}
+}

src/exposers/types/class-tainacan-type.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Tainacan\Exposers\Types;
+
+abstract class Type {
+	/**
+	 * @param \WP_REST_Response $response
+	 * @param \WP_REST_Server $handler
+	 * @param \WP_REST_Request $request
+	 * @return \WP_REST_Response
+	 */
+	public abstract function rest_request_after_callbacks( $response, $handler, $request );
+}

src/exposers/types/class-tainacan-xml.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Tainacan\Exposers\Types;
+
+class Xml extends Type {
+	/**
+	 * 
+	 * {@inheritDoc}
+	 * @see \Tainacan\Exposers\Types\Type::rest_request_after_callbacks()
+	 */
+	public function rest_request_after_callbacks( $response, $handler, $request ) {
+		$response->set_headers( ['Content-Type: application/xml; charset=' . get_option( 'blog_charset' )] );
+		$xml = new \SimpleXMLElement('<?xml version="1.0"?><data></data>');
+		$xml = $this->array_to_xml($response->get_data(), $xml);
+		$response->set_data($xml->asXml());
+		return $response;
+	}
+	
+	protected function array_to_xml( $data, $xml_data ) {
+		foreach( $data as $key => $value ) {
+			if( is_numeric($key) ){
+				$key = 'item'.$key; //dealing with <0/>..<n/> issues
+			}
+			if( is_array($value) ) {
+				$subnode = $xml_data->addChild($key);
+				$this->array_to_xml($value, $subnode);
+			} else {
+				$xml_data->addChild("$key",htmlspecialchars("$value"));
+			}
+		}
+		return $xml_data;
+	}
+}

tests/test-api-exposers.php

@@ -0,0 +1,94 @@
+<?php
+
+namespace Tainacan\Tests;
+
+/**
+ * @group api_exposers
+ */
+class TAINACAN_REST_Exposers extends TAINACAN_UnitApiTestCase {
+	protected $item;
+	protected $collection;
+	protected $field;
+	
+	protected function create_meta_requirements() {
+		$collection = $this->tainacan_entity_factory->create_entity(
+			'collection',
+			array(
+				'name' => 'testeItemExpose',
+				'description' => 'No description',
+			),
+			true,
+			true
+		);
+		
+		$type = $this->tainacan_field_factory->create_field('text');
+		
+		$field = $this->tainacan_entity_factory->create_entity(
+			'field',
+			array(
+				'name'              => 'teste_Expose',
+				'description'       => 'descricao',
+				'collection'        => $collection,
+				'field_type'		=> $type,
+				'accept_suggestion'	=> true
+			),
+			true,
+			true
+		);
+		
+		$item = $this->tainacan_entity_factory->create_entity(
+			'item',
+			array(
+				'title'       => 'item_teste_Expose',
+				'description' => 'adasdasdsa',
+				'collection'  => $collection
+			),
+			true,
+			true
+		);
+		$this->collection = $collection;
+		$this->item = $item;
+		$this->field = $field;
+		return ['collection' => $collection, 'item' => $item, 'field' => $field];
+	}
+	
+	public function test_exposers() {
+		$this->create_meta_requirements();
+		global $Tainacan_Fields, $Tainacan_Item_Metadata;
+		
+		extract($this->create_meta_requirements());
+		
+		$item__metadata_json = json_encode([
+			'values'       => 'TestValues_exposers',
+		]);
+		
+		$request  = new \WP_REST_Request('POST', $this->namespace . '/item/' . $item->get_id() . '/metadata/' . $field->get_id() );
+		$request->set_body($item__metadata_json);
+		
+		$response = $this->server->dispatch($request);
+		
+		$this->assertEquals(200, $response->get_status());
+		
+		$data = $response->get_data();
+		
+		$this->assertEquals($item->get_id() , $data['item']['id']);
+		$this->assertEquals('TestValues_exposers', $data['value']);
+		
+		$item_exposer_json = json_encode([
+			'exposer-type'       => 'Xml',
+		]);
+		
+		$request  = new \WP_REST_Request('GET', $this->namespace . '/item/' . $item->get_id() . '/metadata/'. $field->get_id() );
+		$request->set_body($item_exposer_json);
+		$response = $this->server->dispatch($request);
+		$this->assertEquals(200, $response->get_status());
+		$data = $response->get_data();
+		
+		$this->assertInstanceOf('SimpleXMLElement', @simplexml_load_string($data));
+		
+		$xml = simplexml_load_string($data);
+		$xml->asXML('/tmp/1.xml');
+	}
+}
+
+?>