<?php

namespace app\admin\controller\xhprof;

use app\common\controller\AdminController;
use app\admin\service\annotation\ControllerAnnotation;
use app\admin\service\annotation\NodeAnotation;
use think\App;

/**
 * XHProf 函数监控规则管理
 * regex 为 PCRE（对被调用函数名匹配），保存前校验编译合法性，
 * 防止非法正则打爆导入任务的规则编译。
 *
 * @ControllerAnnotation(title="XHProf 函数监控规则")
 */
class Watch extends AdminController
{
    use \app\admin\traits\Curd {
        \app\admin\traits\Curd::add as curdAdd;
        \app\admin\traits\Curd::edit as curdEdit;
    }

    public function __construct(App $app)
    {
        parent::__construct($app);

        $this->model = new \app\admin\model\XhprofWatch();

        $this->assign('select_list_status', $this->model::SELECT_LIST_STATUS, true);
    }

    /**
     * @NodeAnotation(title="添加")
     */
    public function add()
    {
        if ($this->request->isPost()) {
            $this->validateWatchRegex((string) $this->request->post('regex', ''));
        }

        return $this->curdAdd();
    }

    /**
     * @NodeAnotation(title="编辑")
     */
    public function edit($id)
    {
        if ($this->request->isPost()) {
            $this->validateWatchRegex((string) $this->request->post('regex', ''));
        }

        return $this->curdEdit($id);
    }

    /**
     * 校验 PCRE 正则合法性（与导入任务 compileWatchRegexes 同一判据）.
     */
    protected function validateWatchRegex(string $regex): void
    {
        if ($regex === '') {
            $this->error('正则不能为空');
        }
        error_clear_last();
        if (@preg_match($regex, '') === false) {
            $error = error_get_last();
            $message = $error !== null ? $error['message'] : preg_last_error_msg();
            $this->error('正则非法（必须带定界符，如 ~think\\\\db\\\\.*~）：' . $message);
        }
    }
}