<?php

namespace App\Utilities;

use App\Models\Auth\User;

class SidebarMenu
{
    /**
     * 侧边栏与首页共用的功能分组，按当前账号可访问的页面过滤，标题跟随后台自定义名称。
     *
     * @return array<int, array{title: string, items: array<int, array{section: string, page: string, title: string, icon: string}>}>
     */
    public static function groups(?User $user = null): array
    {
        $user ??= user();

        $groups = [
            ['title' => '工作台', 'items' => [
                ['workspace', 'overview', '经营总览', 'monitoring'],
            ]],
            ['title' => '经营报表', 'items' => [
                ['financial-operations', 'ledger', '财务台账', 'menu_book'],
                ['company-management', 'subject-operating-report', '主体维度经营报表', 'domain'],
                ['company-management', 'company-cost-arrangement', '公司成本安排', 'account_balance_wallet'],
                ['company-management', 'tax-forecast', '税金预测表', 'calculate'],
                ['store-management', 'store-report', '店铺维度报表', 'storefront'],
                ['store-management', 'internal-flow-report', '内部流转报表', 'swap_horiz'],
                ['company-management', 'personnel-inventory', '人员盘点表', 'groups'],
            ]],
            ['title' => '基础资料', 'items' => [
                ['store-management', 'basic-information', '店铺基础信息', 'shopping_bag'],
                ['store-management', 'store-accounts', '店铺账号密码', 'key'],
                ['company-management', 'basic-information', '公司基础信息', 'badge'],
                ['trademark-management', 'information', '商标基础信息', 'workspace_premium'],
            ]],
            ['title' => '规则信息', 'items' => [
                ['trademark-management', 'subject-trademark-rules', '主体商标规则', 'rule'],
                ['trademark-management', 'store-change-rules', '店铺变更规则', 'rule'],
                ['trademark-management', 'store-report-data-logic', '店铺维度报表逻辑配置', 'table_chart'],
                ['trademark-management', 'tax-forecast-data-logic', '税金预测表逻辑配置', 'calculate'],
            ]],
            ['title' => '业务进度', 'items' => [
                ['company-management', 'company-progress', '公司进度表', 'timeline'],
                ['store-management', 'change-progress', '店铺变更进度表', 'swap_horiz'],
                ['trademark-management', 'trademark-progress', '商标进度表', 'format_list_bulleted'],
                ['other', 'systemization-todos', '系统化待办', 'checklist'],
                ['workspace', 'tasks', '待办事项', 'assignment_turned_in'],
                ['workspace', 'warnings', '预警页面', 'warning_amber'],
            ]],
            ['title' => '财务报表', 'items' => [
                ['prototype-finance-reports', 'profit-report', '公司利润报表', 'request_quote'],
                ['prototype-finance-reports', 'asset-report', '公司资产报表', 'account_balance'],
            ]],
        ];

        $visiblePages = self::visiblePages($user);

        $groups = array_map(function (array $group) use ($visiblePages): array {
            $items = [];

            foreach ($group['items'] as [$section, $page, $title, $icon]) {
                $key = $section . '/' . $page;

                if (! isset($visiblePages[$key])) {
                    continue;
                }

                $items[] = [
                    'section' => $section,
                    'page' => $page,
                    'title' => $visiblePages[$key],
                    'icon' => $icon,
                ];
            }

            $group['items'] = $items;

            return $group;
        }, $groups);

        return array_values(array_filter($groups, static fn (array $group): bool => $group['items'] !== []));
    }

    /**
     * 当前账号可访问的全部业务模块及页面，供首页做完整导航。
     *
     * @return array<int, array{slug: string, title: string, icon: string, pages: array<int, array{slug: string, title: string}>}>
     */
    public static function sections(?User $user = null): array
    {
        $user ??= user();

        $sections = [];

        foreach (SidebarPermissions::navigationFor($user) as $section) {
            $pages = [];

            foreach ($section['pages'] ?? [] as $page) {
                $pages[] = ['slug' => $page['slug'], 'title' => $page['title']];

                foreach ($page['children'] ?? [] as $child) {
                    $pages[] = ['slug' => $child['slug'], 'title' => $child['title']];
                }
            }

            if ($pages === []) {
                continue;
            }

            $sections[] = [
                'slug' => $section['slug'],
                'title' => $section['title'],
                'icon' => $section['icon'] ?? 'folder',
                'pages' => $pages,
            ];
        }

        return $sections;
    }

    /**
     * @return array<string, string> 「section/page」 => 页面标题
     */
    private static function visiblePages(User $user): array
    {
        $pages = [];

        foreach (SidebarPermissions::navigationFor($user) as $section) {
            foreach ($section['pages'] ?? [] as $page) {
                $pages[$section['slug'] . '/' . $page['slug']] = $page['title'];

                foreach ($page['children'] ?? [] as $child) {
                    $pages[$section['slug'] . '/' . $child['slug']] = $child['title'];
                }
            }
        }

        return $pages;
    }
}