woocommerce create product categories via RST Api

class-wc-api-products.php

//....
public function register_routes( $routes ) {
//....
  # GET/POST /products/categories
		$routes[ $this->base . '/categories' ] = array(
			array( array( $this, 'get_product_categories' ), WC_API_Server::READABLE ),
			array( array( $this, 'create_product_categories' ), WC_API_SERVER::CREATABLE | WC_API_Server::ACCEPT_DATA ),
		);

		# GET/PUT/DELETE /products/categories/<id>
		$routes[ $this->base . '/categories/(?P<id>\d+)' ] = array(
			array( array( $this, 'get_product_category' ), WC_API_Server::READABLE ),
			array( array( $this, 'delete_product_category' ), WC_API_Server::DELETABLE ),
		);
//....
}
//...
	public function create_product_categories( $data ) {
		global $wpdb;

		try {
			if ( ! isset( $data['product_category'] ) ) {
				throw new WC_API_Exception( 'woocommerce_api_missing_product_attribute_data', sprintf( __( 'No %1$s data specified to create %1$s', 'woocommerce' ), 'product_category' ), 400 );
			}

			$data = $data['product_category'];

			// Check permissions
			if ( ! current_user_can( 'manage_product_terms' ) ) {
				throw new WC_API_Exception( 'woocommerce_api_user_cannot_create_product_attribute', __( 'You do not have permission to create product categories', 'woocommerce' ), 401 );
			}

			$data = apply_filters( 'woocommerce_api_create_product_category_data', $data, $this );

			if ( ! isset( $data['name'] ) ) {
				$data['name'] = '';
			}

			// Set the category slug
			if ( ! isset( $data['slug'] ) ) {
				$data['slug'] = wc_sanitize_taxonomy_name( stripslashes( $data['name'] ) );
			} else {
				$data['slug'] = preg_replace( '/^pa\_/', '', wc_sanitize_taxonomy_name( stripslashes( $data['slug'] ) ) );
			}

			// Set taxonomy type
			if ( ! isset( $data['type'] ) ) {
				$data['type'] = 'product_cat';
			}

			// Set values to defaults when not set
			if ( ! isset( $data['parent'] ) ) {
				$data['parent'] = 0;
			}
			if ( ! isset( $data['display'] ) ) {
				$data['display'] = 'default';
			}
			if ( ! isset( $data['image'] ) ) {
				$data['image'] = "";
			}
			if ( ! isset( $data['description'] ) ) {
				$data['description'] = "";
			}

			// Validate the category data
			//$this->validate_attribute_data( $data['name'], $data['slug'], $data['type'], $data['order_by'], true );

			
			$ids = wp_insert_term($data['name'], 'product_cat',  array(
					'description'=> $data['description'],
					'slug' => $data['slug'],
					'parent'=> $data['parent']
			));
			if ( is_wp_error( $ids ) ) {
				throw new WC_API_Exception( 'woocommerce_api_cannot_create_product_category', $ids->get_error_message(), 400 );
			}
			$term_id = $ids['term_id'];
			$term_taxonomy_id = $ids['term_taxonomy_id'];
			
			// add thumbnail
			if(isset($data['image']) && strlen($data['image'])>0){
				//TODO: use image files instead of post ids
				$meta_value = intval($data['image']);
				$insert = $wpdb->insert(
					$wpdb->prefix . 'woocommerce_termmeta',
					array(
						'woocommerce_term_id'   => $term_id,
						'meta_key'    => 'thumbnail_id',
						'meta_value'    => $meta_value					
					),
					array( '%d', '%s', '%d')
				);			

				// Checks for an error 
				if ( is_wp_error( $insert ) ) {
					throw new WC_API_Exception( 'woocommerce_api_cannot_create_product_category', $insert->get_error_message(), 400 );
				}
				$id = $wpdb->insert_id;
			}
			
			// add display
			if(isset($data['display'])){
				//TODO: use image files 
				$meta_value = $data['display'];
				$insert = $wpdb->insert(
					$wpdb->prefix . 'woocommerce_termmeta',
					array(
						'woocommerce_term_id'   => $term_id,
						'meta_key'    => 'display_type',
						'meta_value'    => $meta_value					
					),
					array( '%d', '%s', '%d')
				);			

				// Checks for an error 
				if ( is_wp_error( $insert ) ) {
					throw new WC_API_Exception( 'woocommerce_api_cannot_create_product_category', $insert->get_error_message(), 400 );
				}
				$id = $wpdb->insert_id;
			}

			do_action( 'woocommerce_api_create_product_category', $term_id, $data );

			// Clear transients
			//delete_transient( 'wc_attribute_taxonomies' );

			$this->server->send_status( 201 );

			return $this->get_product_category( $term_id );
		} catch ( WC_API_Exception $e ) {
			echo $e->getMessage();
			return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
		}
	}
	
		public function delete_product_category( $id ) {
		global $wpdb;

		try {
			// Check permissions
			if ( ! current_user_can( 'manage_product_terms' ) ) {
				throw new WC_API_Exception( 'woocommerce_api_user_cannot_delete_product_category', __( 'You do not have permission to delete product category', 'woocommerce' ), 401 );
			}

			$id = absint( $id );

			$term = term_exists($id, 'product_cat');

			if ($term == 0 || $term == null) {
				throw new WC_API_Exception( 'woocommerce_api_invalid_product_category_id', __( 'A product category with the provided ID could not be found', 'woocommerce' ), 404 );
			}
			$term_id = $term['term_id'];
			$deleted = $wpdb->delete(
				$wpdb->prefix . 'woocommerce_termmeta',
				array( 'woocommerce_term_id' => $term_id ),
				array( '%d' )
			);

			if ( false === $deleted ) {
				throw new WC_API_Exception( 'woocommerce_api_cannot_delete_product_category', __( 'Could not delete the category', 'woocommerce' ), 401 );
			}
			
			$result = wp_delete_term( $term_id, 'product_cat');
			if ( is_wp_error( $result ) || is_null( $result ) || !$result ) {
				throw new WC_API_Exception( 'woocommerce_api_cannot_delete_product_category', __( 'Could not delete the category', 'woocommerce' ), 401 );
			}

			do_action( 'woocommerce_product_category_deleted', $id);
			do_action( 'woocommerce_api_delete_product_category', $id, $this );

			// Clear transients
			delete_transient( 'wc_product_category' );

			return array( 'message' => sprintf( __( 'Deleted %s', 'woocommerce' ), 'product_category' ) );
		} catch ( WC_API_Exception $e ) {
			return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
		}
	}

Hello @geesen,

woocommerce/woocommerce#8879
I followed you from this post.

Can you please tell me how you extend woocommerce rest api?

What i have tried to make it happen. i create a plugin in which i add action like :

add_action('woocommerce_api_create_customer', 'create_custom_customer');

Hi @alizainprasla,

I forked woocommerce and changed the file.
I don't think that it's possible to extend the rest endpoint by using actions.