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Edit File: WooController.php

<?php
/**
 * Blocks rest api controller
 *
 * @package CozyBlock\RestApi\Controllers\V1
 */

namespace CozyBlock\RestApi\Controllers\V1;

use WP_Error;
use WP_Query;
use WP_REST_Request;
use CozyBlock\Abstracts\RestControllerBase;

/**
 * Exit if accessed directly.
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

class WooController extends RestControllerBase {
	public function register_routes() {
		try {
			register_rest_route(
				'cozy-block/v1',
				'/product-categories',
				array(
					'methods'             => \WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_product_categories' ),
					'permission_callback' => '__return_true',
				)
			);
		} catch ( \Exception $e ) {
			// error_log( 'Error registering route: ' . $e->getMessage() );
		}

try {
			register_rest_route(
				'cozy-block/v1',
				'/products/(?P<term_id>\d+)',
				array(
					'methods'             => \WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_product_by_category' ),
					'permission_callback' => '__return_true',
				)
			);
		} catch ( \Exception $e ) {
			// error_log( 'Error registering route: ' . $e->getMessage() );
		}

try {
			register_rest_route(
				'cozy-block/v1',
				'/products',
				array(
					'methods'             => \WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_woo_products' ),
					'permission_callback' => '__return_true',
				)
			);
		} catch ( \Exception $e ) {
			// error_log( 'Error registering route: ' . $e->getMessage() );
		}
	}

public function get_product_categories( \WP_REST_Request $request ) {
		$args = array(
			'taxonomy'   => 'product_cat',
			'hide_empty' => true,
			'number'     => $request->get_param( 'per_page' ) ?? 10,
			'order'      => 'DESC',
			'orderby'    => 'count',
		);

$categories = get_terms( $args );

$formatted_data = array();
		if ( ! empty( $categories ) && ! is_wp_error( $categories ) ) {
			foreach ( $categories as $category ) {
				$term_id      = $category->term_id;
				$thumbnail_id = get_term_meta( $term_id, 'thumbnail_id', true );

// get the image URL.
				$image_url = wp_get_attachment_url( $thumbnail_id );

$category->image_url = $image_url;
				$formatted_data[]    = $category;
			}
		}
		return rest_ensure_response( $formatted_data );
	}

public function get_product_by_category( WP_REST_Request $request ) {
		$term_id  = $request->get_param( 'term_id' );
		$per_page = $request->get_param( 'per_page' );

if ( empty( $term_id ) ) {
			return new WP_Error( 'invalid_term_id', 'Invalid term ID', array( 'status' => 400 ) );
		}

// Fetch products associated with the term ID (category ID).
		$args = array(
			'post_type'      => 'product', // Adjust to your custom post type if necessary.
			'tax_query'      => array(
				array(
					'taxonomy' => 'product_cat', // Adjust to your custom taxonomy if necessary.
					'field'    => 'term_id',
					'terms'    => $term_id,
				),
			),
			'posts_per_page' => $per_page,
			'order'          => 'DESC',
			'order_by'       => 'date',
		);

$query = new WP_Query( $args );

if ( ! $query->have_posts() ) {
			return new WP_Error( 'no_products', 'No products found', array( 'status' => 404 ) );
		}

$products = array();

while ( $query->have_posts() ) {
			$query->the_post();
			// Get the product object.
			$product = wc_get_product( get_the_ID() );

$price               = '';
			$discount_amt        = '';
			$discount_percentage = '';
			// Check if the product has a sale price.
			if ( $product->is_on_sale() ) {
				$price         = wc_format_sale_price( $product->get_regular_price(), $product->get_sale_price() );
				$regular_price = $product->get_regular_price();
				$sale_price    = $product->get_sale_price();

// Check if both regular and sale prices are numeric before calculating discount amount
				if ( is_numeric( $regular_price ) && is_numeric( $sale_price ) ) {
					$discount_amt        = wc_price( $regular_price - $sale_price );
					$discount_percentage = ( ( $product->get_regular_price() - $product->get_sale_price() ) / $product->get_regular_price() ) * 100;
					$discount_percentage = number_format( $discount_percentage, 1 );
					$discount_percentage = preg_replace( '/\.0+$/', '', $discount_percentage ) . '%';
				}
			} else {
				$price = wc_price( $product->get_regular_price() );
			}

// Check if the product is valid
			if ( $product ) {
				$products[] = array(
					'id'                  => get_the_ID(),
					'image_url'           => get_the_post_thumbnail_url( get_the_ID() ),
					'title'               => get_the_title(),
					'content'             => get_the_content(),
					'link'                => get_permalink(),
					'price'               => $price, // Get the product price.
					'discount_amt'        => $discount_amt,
					'discount_percentage' => $discount_percentage,
					'on_sale'             => $product->is_on_sale(),
					'rating'              => $product->get_average_rating(), // Get the product rating.
				);
			}
		}

wp_reset_postdata();

return rest_ensure_response( $products );
	}

public function get_woo_products( \WP_REST_Request $request ) {
		$type     = $request->get_param( 'type' ) ?? 'latest';
		$per_page = $request->get_param( 'per_page' ) ?? 3;

$args = array();

switch ( $type ) {
			case 'seller':
				$args = array(
					'post_type'      => 'product',
					'order'          => 'DESC',
					'posts_per_page' => $per_page,
					'meta_key'       => 'total_sales',
					'orderby'        => 'total_sales',
					'meta_query'     => array(
						'relation' => 'AND',
						array(
							'key'     => 'total_sales',
							'compare' => 'EXISTS',
						),
						array(
							'key'     => 'total_sales',
							'value'   => '0',
							'compare' => '>',
						),
					),
				);
				break;

case 'rated':
				$args = array(
					'post_type'      => 'product',
					'order'          => 'DESC',
					'posts_per_page' => $per_page,
					'meta_key'       => '_wc_average_rating',
					'orderby'        => '_wc_average_rating',
					'meta_query'     => array(
						'relation' => 'AND',
						array(
							'key'     => '_wc_average_rating',
							'compare' => 'EXISTS',
						),
						array(
							'key'     => '_wc_average_rating',
							'value'   => '0',
							'compare' => '>',
						),
					),
				);
				break;

case 'sale':
				$args = array(
					'post_type'      => 'product',
					'order'          => 'DESC',
					'posts_per_page' => $per_page,
					'orderby'        => 'date',
					'meta_query'     => array(
						array(
							'key'     => '_sale_price',
							'value'   => 0,
							'compare' => '>',
							'type'    => 'NUMERIC',
						),
					),
				);
				break;

default:
				$args = array(
					'post_type'      => 'product',
					'order'          => 'DESC',
					'posts_per_page' => $per_page,
					'orderby'        => 'date',
				);
		}

$query = new WP_Query( $args );

if ( ! $query->have_posts() ) {
			return new WP_Error( 'no_products', 'No products found', array( 'status' => 404 ) );
		}

$products = array();

while ( $query->have_posts() ) {
			$query->the_post();
			// Get the product object.
			$product = wc_get_product( get_the_ID() );

// Get categories and their links.
			$categories         = get_the_terms(
				get_the_ID(),
				'product_cat'
			);
			$product_categories = array();
			foreach ( $categories as $category ) {
				$product_categories[] = array(
					'name'        => $category->name,
					'link'        => get_category_link( $category->term_id ),
					'count'       => $category->count,
					'description' => $category->description,
					'slug'        => $category->slug,
					'taxonomy'    => $category->taxonomy,
					'parent'      => $category->parent,
				);
			}

wp_reset_postdata();

return rest_ensure_response( $products );
	}
}

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