<?php

namespace ThreePLNext\WooCommerce;

use WP_Error;

class API_Client
{
    private const API_BASE = 'https://apps.3plnext.com';

    public function login(string $email, string $password, string $site_url, string $client_id)
    {
        $payload = array(
            'username' => $email,
            'password' => $password,
            'client_id' => $client_id,
        );

        $response = $this->post(self::API_BASE . '/woocomerce/login', $payload);
        if (is_wp_error($response)) {
            return $response;
        }

        if (!isset($response['token']) || empty($response['token'])) {
            return new WP_Error('threeplnext_invalid_response', __('Invalid response from 3plnext API.', '3plnext'));
        }

        return $response['token'];
    }

    public function register_store(string $token, array $store_data)
    {
        $headers = array(
            'Authorization' => 'Bearer ' . $token,
        );

        return $this->post(self::API_BASE . '/woocomerce/store_register', $store_data, $headers);
    }

    public function disconnect_store(string $token, string $store_url, string $client_id)
    {
        $headers = array(
            'Authorization' => 'Bearer ' . $token,
        );

        $payload = array(
            'store_url' => $store_url,
            'client_id' => $client_id,
        );

        return $this->post(self::API_BASE . '/woocomerce/store_disconnect', $payload, $headers);
    }

    private function post(string $url, array $body, array $headers = array())
    {
        $args = array(
            'method' => 'POST',
            'timeout' => 15,
            'headers' => array_merge(
                array('Content-Type' => 'application/json'),
                $headers
            ),
            'body' => wp_json_encode($body),
            'data_format' => 'body',
        );

        $response = wp_remote_post($url, $args);

        if (is_wp_error($response)) {
            return $response;
        }

        $code = wp_remote_retrieve_response_code($response);
        $raw = wp_remote_retrieve_body($response);

        if ($code < 200 || $code >= 300) {
            /* translators: %s: HTTP status code returned by the 3plnext API. */
            return new WP_Error('threeplnext_http_error', sprintf(__('3plnext API error: %s', '3plnext'), (string) $code));
        }

        $decoded = json_decode($raw, true);
        if (!is_array($decoded)) {
            return new WP_Error('threeplnext_invalid_json', __('3plnext API returned invalid JSON.', '3plnext'));
        }

        return $decoded;
    }
}