<?php

namespace App\Support;

/**
 * The navigation of both shells, in one place.
 *
 * The sidebar and the breadcrumb describe the same structure, and when each
 * built its own copy the breadcrumb quietly said "Übersicht" on every page —
 * the layout had no way to know which entry was current, so it fell back to the
 * first one. One definition, two readers.
 *
 * Each entry is [route name, icon, translation key, capability or null].
 */
final class Navigation
{
    /** @return array<int, array{label: ?string, items: array<int, array{0:string,1:string,2:string,3:?string}>}> */
    public static function portal(): array
    {
        return [
            ['label' => null, 'items' => [
                ['dashboard', 'gauge', 'overview', null],
                ['cloud', 'cloud', 'cloud', null],
                ['users', 'users', 'users', null],
                ['backups', 'database', 'backups', null],
            ]],
            ['label' => __('dashboard.nav_group.contract'), 'items' => [
                ['billing', 'box', 'billing', null],
                ['invoices', 'receipt', 'invoices', null],
                ['settings', 'settings', 'settings', null],
                ['support', 'life-buoy', 'support', null],
            ]],
        ];
    }

    /** @return array<int, array{label: ?string, items: array<int, array{0:string,1:string,2:string,3:?string}>}> */
    public static function console(): array
    {
        return [
            ['label' => null, 'items' => [
                ['admin.overview', 'gauge', 'overview', null],
                ['admin.customers', 'users', 'customers', null],
                ['admin.instances', 'box', 'instances', null],
                ['admin.hosts', 'server', 'hosts', null],
                ['admin.datacenters', 'database', 'datacenters', null],
                ['admin.plans', 'tag', 'plans', 'plans.manage'],
            ]],
            ['label' => __('admin.nav_group.operations'), 'items' => [
                ['admin.provisioning', 'activity', 'provisioning', null],
                ['admin.maintenance', 'alert-triangle', 'maintenance', null],
                ['admin.vpn', 'shield', 'vpn', null],
                ['admin.revenue', 'trending-up', 'revenue', null],
                // Its own entry, not a section of Settings: what is set here
                // appears on a legal document, and burying it beside the
                // site-visibility switch invites somebody to change one in passing.
                ['admin.finance', 'receipt', 'finance', 'site.manage'],
            ]],
            ['label' => __('admin.nav_group.system'), 'items' => [
                ['admin.mail', 'mail', 'mail', 'mail.manage'],
                ['admin.secrets', 'lock', 'secrets', 'secrets.manage'],
                ['admin.infrastructure', 'globe', 'infrastructure', 'hosts.manage'],
                ['admin.settings', 'settings', 'settings', null],
                // null capability, deliberately: the compulsory two-factor
                // switch (Admin\Settings::saveTwoFactorPolicy()) applies to
                // every operator, so enrolment has to be reachable by every
                // operator too, not only the ones who can manage the site.
                ['admin.two-factor-setup', 'shield-check', 'two_factor_setup', null],
            ]],
        ];
    }

    /**
     * The label of the entry the current request belongs to.
     *
     * Matched on the route rather than the path, because the console's path
     * changes between host-bound and fallback mode while its route names do
     * not. Null when the page is not in the navigation at all — a detail view,
     * a modal — and the caller then supplies its own title.
     */
    public static function currentLabel(bool $console = false): ?string
    {
        $prefix = $console ? 'admin.nav.' : 'dashboard.nav.';

        foreach ($console ? self::console() : self::portal() as $group) {
            foreach ($group['items'] as [$route, , $key]) {
                $matches = $console
                    ? AdminArea::routeIs($route)
                    : request()->routeIs($route);

                if ($matches) {
                    return __($prefix.$key);
                }
            }
        }

        return null;
    }
}