<?php

namespace GeoScale;

defined('ABSPATH') || exit;

/**
 * Client for the GeoScale Address API.
 *
 * Sends authenticated address search and lookup requests to the GeoScale API and returns the decoded JSON response.
 * Requests use a short timeout so address autocomplete fails quickly if the API request cannot complete in time.
 *
 * @see https://developer.wordpress.org/plugins/http-api/
 * @see https://docs.geoscale.io/
 */
class Address_Client
{
	private const BASE_URL = 'https://api.geoscale.io/v1/address';

	private $api_key;

	public function __construct()
	{
		$this->api_key = get_option('geoscale_api_key');
	}

	public function search($country, $query, $lang = '')
	{
		$args = [
			'country' => $country,
			'q' => $query,
		];

		if ($lang) {
			$args['lang'] = $lang;
		}

		$url = add_query_arg($args, self::BASE_URL);

		return $this->request($url);
	}

	public function select($id, $lang = '')
	{
		$url = trailingslashit(self::BASE_URL) . rawurlencode($id);

		if ($lang) {
			$url = add_query_arg('lang', $lang, $url);
		}

		return $this->request($url);
	}

	private function request($url)
	{
		if (!$this->api_key) {
			return new \WP_Error(
				'geoscale_missing_api_key',
				__('GeoScale API key is not configured.', 'address-autocomplete-geoscale'),
				['status' => 500]
			);
		}

		$response = wp_remote_get($url, [
			'timeout' => 3,
			'headers' => [
				'Accept' => 'application/json',
				'Authorization' => 'Bearer ' . $this->api_key,
			],
		]);

		if (is_wp_error($response) || 200 !== wp_remote_retrieve_response_code($response)) {
			return new \WP_Error(
				'geoscale_api_error',
				__('The GeoScale Address API request failed.', 'address-autocomplete-geoscale'),
				['status' => 502]
			);
		}

		return json_decode(
			wp_remote_retrieve_body($response),
			true
		);
	}
}