<?php
declare(strict_types=1);

namespace app\controller\admin;

use app\BaseController;
use think\facade\Db;

class Menu extends BaseController
{
    /** 全部菜单树（配置用，不限角色） */
    public function tree()
    {
        $rows = Db::name('sys_menu')
            ->where('status', 1)
            ->order('sort', 'asc')
            ->order('id', 'asc')
            ->select()
            ->toArray();

        return json(['code' => 0, 'msg' => 'ok', 'data' => ['list' => $this->build($rows, 0)]]);
    }

    public function save()
    {
        $id        = (int) $this->request->post('id', 0);
        $parentId  = (int) $this->request->post('parent_id', 0);
        $name      = trim((string) $this->request->post('name', ''));
        $type      = (int) $this->request->post('type', 1);
        $path      = trim((string) $this->request->post('path', ''));
        $component = trim((string) $this->request->post('component', ''));
        $perms     = trim((string) $this->request->post('perms', ''));
        $icon      = trim((string) $this->request->post('icon', ''));
        $sort      = (int) $this->request->post('sort', 0);
        $status    = (int) $this->request->post('status', 1);

        if ($name === '') {
            return json(['code' => 400, 'msg' => '名称必填', 'data' => []]);
        }

        $now = date('Y-m-d H:i:s');
        $row = [
            'parent_id'  => $parentId,
            'name'       => $name,
            'type'       => $type,
            'path'       => $path,
            'component'  => $component,
            'perms'      => $perms,
            'icon'       => $icon,
            'sort'       => $sort,
            'status'     => $status,
            'update_time'=> $now,
        ];

        if ($id <= 0) {
            $row['create_time'] = $now;
            Db::name('sys_menu')->insert($row);
        } else {
            Db::name('sys_menu')->where('id', $id)->update($row);
        }

        return json(['code' => 0, 'msg' => '已保存', 'data' => []]);
    }

    public function delete(int $id)
    {
        $child = Db::name('sys_menu')->where('parent_id', $id)->count();
        if ($child > 0) {
            return json(['code' => 400, 'msg' => '请先删除子菜单', 'data' => []]);
        }
        Db::name('sys_role_menu')->where('menu_id', $id)->delete();
        Db::name('sys_menu')->where('id', $id)->delete();
        return json(['code' => 0, 'msg' => '已删除', 'data' => []]);
    }

    /**
     * @param list<array<string,mixed>> $rows
     * @return list<array<string,mixed>>
     */
    protected function build(array $rows, int $parentId): array
    {
        $out = [];
        foreach ($rows as $r) {
            if ((int) $r['parent_id'] !== $parentId) {
                continue;
            }
            $out[] = [
                'id'        => (int) $r['id'],
                'parent_id' => (int) $r['parent_id'],
                'name'      => $r['name'],
                'type'      => (int) $r['type'],
                'path'      => $r['path'],
                'component' => $r['component'],
                'perms'     => $r['perms'],
                'icon'      => $r['icon'],
                'sort'      => (int) $r['sort'],
                'children'  => $this->build($rows, (int) $r['id']),
            ];
        }

        return $out;
    }
}