<?php

namespace app\middleware;

use think\exception\ValidateException;
use OSS\Core\OssException;
use OSS\OssClient;
use think\facade\Log;

class Validate
{
    /**
     * 处理请求
     * @param \think\Request $request
     * @param \Closure       $next
     * @return Response
     */
    public function handle($request, \Closure $next)
    {
        $controller = $request->controller();
        $action = $request->action();
        $appName = app()->http->getName();
        trace($appName.'\\controller\\'.$controller.'@'.$action, 'log');
        $validateClass = 'app\\' . $appName . '\\validate' . '\\' . ucfirst($controller);

        $param = $request->isPost() ? $request->post() : $request->get();
        trace('post:'.json_encode($request->post()), 'log');
        trace('get:'.json_encode($request->get()), 'log');
        if (class_exists($validateClass)) {
            $validateObj = validate($validateClass);
            if ($validateObj->hasScene($action)) {
                try {
                    $validateObj->scene($action)->check($param);
                } catch (ValidateException $e) {
                    // 验证失败 输出错误信息
                    return json(['code' => 1, 'msg' => $e->getError()]);
                }
            }
        }

        // 如果有上传图片，先将地址传到控制器
        $files = $_FILES;
        $method = strtolower($request->method(true));
        $requestMethond = 'with' . ucfirst($method);
        $imgUrlOss = [];
        if (!empty($files)) {
            foreach ($files as $key => $f) {
                if (!empty($f['name'])) {
                    if (is_array($f['name'])) {
                        $p = [];
                        foreach ($f['name'] as $i => $name) {
                            $url = $controller . '/' . uniqid() . '.' . pathinfo($name, PATHINFO_EXTENSION);
                            $imgUrlOss[] = ['tmp_name' => $f['tmp_name'][$i], 'name' => $url];
                            $p[] = $url;
                        }
                    } else {
                        $p =  $controller . '/' . uniqid() . '.' . pathinfo($f['name'], PATHINFO_EXTENSION);
                        $imgUrlOss[] = ['tmp_name' => $f['tmp_name'], 'name' => $p];
                    }

                    if (method_exists($request, $requestMethond)) {
                        $request->$requestMethond(array_merge($request->$method(), [$key => $p]));
                    }
                }
            }
        }
        // 恢复内容设置到变量中
        $response = $next($request);

        // 将上传到图片保存
        if (!empty($imgUrlOss)) {
            $accessKeyId = config('app.ali_oss_access_key_id');
            $accessKeySecret = config('app.ali_oss_access_key_secret');
            $endpoint = config('app.ali_oss_end_point');
            $bucket = config('app.ali_oss_bucket');
            $oss = new OssClient($accessKeyId, $accessKeySecret, $endpoint);
            try {
                foreach ($imgUrlOss as $key => $v) {
                    $oss->uploadFile($bucket, $v['name'], $v['tmp_name']);
                }
            } catch (OssException $e) {
                Log::record('文件上传失败,error:' . $e->getErrorCode(), 'error');
                return json(['code' => 1, 'msg' => $e->getErrorMessage()]);
            }
        }

        return $response;
    }
}