<?php

namespace App\Services;

use Illuminate\Support\Carbon;

/** Availability evidence is distinct from legal validity or institutional endorsement. */
class InstitutionalLinkMonitor
{
    /** @return array{available:bool,reason:string,contact:string} */
    public function status(\stdClass $link): array
    {
        $valid = filter_var($link->url, FILTER_VALIDATE_URL) && parse_url($link->url, PHP_URL_SCHEME) === 'https';
        $fresh = $link->verified_at && Carbon::parse($link->verified_at)->between(now()->subDays(7), now());

        return ['available' => (bool) ($valid && $fresh && $link->status === 'active'),
            'reason' => ! $valid ? 'invalid_url' : (! $fresh ? 'verification_missing_or_expired' : ($link->status === 'active' ? 'recent_internal_check' : 'reported_unavailable')),
            'contact' => $link->contact ?: (config('portal.support.email') ?: 'Utilize o pedido de apoio no mesmo dossier.')];
    }
}