<?php

declare(strict_types=1);

namespace Sarcio\WordPress;

final class InboxSummary
{
    private const CACHE_SEC = 120;
    private const TRANSIENT = 'sarcio_inbox_summary';

    /** @return array{awaitingSecondApproval:int,live:int,needsReview:int,noticeEnabled:bool,noticed:int,openRequests:int,signals:array<int,array{count:int,kind:string,lastSeenAt:string,method:?string,reported:bool,sample:string,status:?int,urlPath:string}>,total:int,triaging:int}|null */
    public static function get(): ?array
    {
        $siteKey = (string) Options::get('site_key');
        $secret = (string) Options::get('sidecar_key');
        if ($siteKey === '' || $secret === '') {
            return null;
        }
        $cached = get_transient(self::TRANSIENT);
        if (is_array($cached) && isset($cached['total'])) {
            return empty($cached['failed']) ? $cached : null;
        }

        $response = wp_remote_get(
            sprintf('%s/api/sites/%s/inbox-summary', Options::apiUrl(), rawurlencode($siteKey)),
            [
                'headers' => ['Authorization' => 'Bearer ' . $secret],
                'redirection' => 0,
                'timeout' => 3,
            ],
        );
        $status = is_wp_error($response) ? 0 : (int) wp_remote_retrieve_response_code($response);
        $body = $status === 200 ? json_decode((string) wp_remote_retrieve_body($response), true) : null;
        if (!is_array($body)) {
            set_transient(self::TRANSIENT, ['failed' => true, 'total' => -1], self::CACHE_SEC);
            return null;
        }
        $summary = [
            'awaitingSecondApproval' => max(0, (int) ($body['awaitingSecondApproval'] ?? 0)),
            'live' => max(0, (int) ($body['live'] ?? 0)),
            'needsReview' => max(0, (int) ($body['needsReview'] ?? 0)),
            'noticeEnabled' => !empty($body['noticeEnabled']),
            'noticed' => max(0, (int) ($body['noticed'] ?? 0)),
            'openRequests' => max(0, (int) ($body['openRequests'] ?? 0)),
            'signals' => self::signals($body['signals'] ?? null),
            'total' => max(0, (int) ($body['total'] ?? 0)),
            'triaging' => max(0, (int) ($body['triaging'] ?? 0)),
        ];
        set_transient(self::TRANSIENT, $summary, self::CACHE_SEC);
        return $summary;
    }

    /**
     * What failed for visitors lately, as the API lists it, kept to what the
     * dashboard shows: no visitor keys, nothing a visitor typed.
     *
     * @return array<int,array{count:int,kind:string,lastSeenAt:string,method:?string,reported:bool,sample:string,status:?int,urlPath:string}>
     */
    public static function signals(mixed $raw): array
    {
        $out = [];
        foreach (is_array($raw) ? array_slice($raw, 0, 5) : [] as $signal) {
            if (!is_array($signal) || !is_string($signal['sample'] ?? null)) {
                continue;
            }
            $out[] = [
                'count' => max(0, (int) ($signal['count'] ?? 0)),
                'kind' => in_array($signal['kind'] ?? '', ['request', 'network'], true) ? 'request' : 'error',
                'lastSeenAt' => (string) ($signal['lastSeenAt'] ?? ''),
                'method' => isset($signal['method']) && is_string($signal['method']) ? $signal['method'] : null,
                'reported' => !empty($signal['reported']),
                'sample' => mb_substr(sanitize_text_field($signal['sample']), 0, 160),
                'status' => isset($signal['status']) && is_numeric($signal['status']) ? (int) $signal['status'] : null,
                'urlPath' => mb_substr(sanitize_text_field((string) (wp_parse_url((string) ($signal['urlPath'] ?? ''), PHP_URL_PATH) ?: ($signal['urlPath'] ?? '/'))), 0, 200),
            ];
        }
        return $out;
    }

    public static function forget(): void
    {
        delete_transient(self::TRANSIENT);
    }

    public static function badge(): string
    {
        $summary = self::get();
        $count = $summary === null ? 0 : $summary['total'];
        if ($count < 1) {
            return '';
        }
        return sprintf(
            ' <span class="awaiting-mod count-%1$d"><span class="pending-count" aria-hidden="true">%1$d</span><span class="screen-reader-text">%2$s</span></span>',
            $count,
            esc_html(sprintf(
                /* translators: %d: number of reports waiting. */
                _n('%d report waiting', '%d reports waiting', $count, 'sarcio'),
                $count,
            )),
        );
    }
}