<?php

declare(strict_types=1);

namespace Sarcio\WordPress;

final class Embed
{
    private const CACHE_SEC = 3600;

    /**
     * @return array{embedUrl?:string,siteName?:string,workspaceName?:string,error?:string}
     */
    public static function info(bool $refresh = false): array
    {
        $siteKey = (string) Options::get('site_key');
        $secret = (string) Options::get('sidecar_key');
        if ($siteKey === '' || $secret === '') {
            return ['error' => __('Add your site key and secret key under Settings → Sarcio first.', 'sarcio')];
        }
        $origin = self::adminOrigin();
        $cacheKey = 'sarcio_embed_' . md5($siteKey . '|' . $origin . '|' . Options::apiUrl());
        if (!$refresh) {
            $cached = get_transient($cacheKey);
            if (is_array($cached) && isset($cached['embedUrl'])) {
                return $cached;
            }
        }

        $response = wp_remote_post(
            sprintf('%s/api/sites/%s/embed', Options::apiUrl(), rawurlencode($siteKey)),
            [
                'body' => (string) wp_json_encode(['origin' => $origin]),
                'headers' => [
                    'Authorization' => 'Bearer ' . $secret,
                    'Content-Type' => 'application/json',
                ],
                'redirection' => 0,
                'timeout' => 5,
            ],
        );
        if (is_wp_error($response)) {
            return ['error' => __('Could not reach Sarcio. Check your connection and try again.', 'sarcio')];
        }
        $status = (int) wp_remote_retrieve_response_code($response);
        if ($status === 401) {
            return ['error' => __('Sarcio did not accept the secret key. Check it under Settings → Sarcio.', 'sarcio')];
        }
        $body = json_decode((string) wp_remote_retrieve_body($response), true);
        if (($status !== 200 && $status !== 201) || !is_array($body) || !is_string($body['embedUrl'] ?? null)) {
            return ['error' => __('Sarcio could not open the review screens for this site right now.', 'sarcio')];
        }
        $info = [
            'embedUrl' => esc_url_raw($body['embedUrl']),
            'siteName' => sanitize_text_field((string) ($body['siteName'] ?? '')),
            'workspaceName' => sanitize_text_field((string) ($body['workspaceName'] ?? '')),
        ];
        Brand::store(is_array($body['branding'] ?? null) ? $body['branding'] : null);
        set_transient($cacheKey, $info, self::CACHE_SEC);
        return $info;
    }

    public static function workspaceUrl(): ?string
    {
        $info = self::cachedInfo();
        if (!isset($info['embedUrl'])) {
            return null;
        }
        $parts = wp_parse_url($info['embedUrl']);
        if (!is_array($parts) || empty($parts['scheme']) || empty($parts['host'])) {
            return null;
        }
        return $parts['scheme'] . '://' . $parts['host'] . (isset($parts['port']) ? ':' . $parts['port'] : '');
    }

    public static function adminOrigin(): string
    {
        $parts = wp_parse_url(admin_url());
        if (!is_array($parts) || empty($parts['host'])) {
            return '';
        }
        return ($parts['scheme'] ?? 'https') . '://' . $parts['host'] . (isset($parts['port']) ? ':' . $parts['port'] : '');
    }

    /** @return array<string,string> */
    private static function cachedInfo(): array
    {
        $siteKey = (string) Options::get('site_key');
        $cached = get_transient('sarcio_embed_' . md5($siteKey . '|' . self::adminOrigin() . '|' . Options::apiUrl()));
        return is_array($cached) ? $cached : [];
    }
}