<?php

namespace app\admin\controller;

use app\model\AwsS3Model;
use app\model\FileModel;
use app\utility\AwsS3Handler;
use Aws\S3\S3Client;
use think\facade\Filesystem;
use think\facade\Config;
use think\facade\Log;

class Upload extends AdminBaseController
{
    // 上传文件至服务器本地
    public function uploadToServer()
    {
        $file = $this->request->file('file');
        if (!$file) {
            return json(['code' => 400, 'message' => 'No file uploaded233']);
        }
        if ($file->getSize() > 100 * 1024 * 1024) {
            return json(['code' => 400, 'message' => 'Upload file is too large']);
        }
        $name = Filesystem::disk('local')->putFile('topic', $file);
        $path = '/bs/image/'.$name;
        return json(['code'=>0, 'message'=>'ok', 'data'=>['path'=>$path]]);
    }

    // 上传图片至 aws s3
    public function uploadImg()
    {
        try {
            // 获取文件
            $file = $this->request->file('file');
            // 检测文件是否存在
            if (!$file) {
                return json(['code' => 400, 'message' => 'No file uploaded']);
            }
            // 验证文件类型和大小, 限制20M
            $maxSize = 20 * 1024 * 1024;
            if ($file->getSize() > $maxSize) {
                return json(['code' => 400, 'message' => 'Upload file is too large']);
            }
            // 打开文件
            $openFile = fopen($file->getRealPath(), 'r');
            if (!$openFile) {
                return json(['code' => 400, 'message' => 'Failed to open the file']);
            }
            // 验证上传文件类型
            if (!in_array($file->getOriginalMime(), ['image/jpeg','image/png','image/webp','image/bm'])) {
                return json(['code' => 400, 'message' => 'Upload file type error']);
            }
            // 生成唯一的文件名
            $fileName = bin2hex(random_bytes(16)) . '.' . $file->getOriginalExtension();
            // 初始化s3客户端
            $s3Config = Config::get('common.aws_s3');
            $s3Obj = new AwsS3Handler($s3Config);
            $keyName = 'bourse-avatar/' . $fileName;
            $result = $s3Obj->putObject($keyName, $openFile, $file->getOriginalMime());
            fclose($openFile);
            if (!isset($result['data']['ObjectURL'])) {
                return json(['code' => 400, 'message' => '上传图片至s3失败']);
            }
            // 记录上传的文件
            AwsS3Model::create([
                'name' => $fileName,
                's3_url' => $result['data']['ObjectURL'],
                'size' => $file->getSize(),
                'mime' => $file->getOriginalMime(),
                'ext' => $file->getOriginalExtension(),
            ]);
            return json(['code' => '0', 'message' => '上传成功', 'data' => ['path' => $result['data']['ObjectURL']]]);
        } catch (\Exception $exception) {
            if (isset($openFile)) {
                fclose($openFile);
            }
            return json(['code' => '500', 'message' => '系统繁忙', 'data' => [$exception->getMessage()]]);
        }
    }

    // 上传视频到 aws s3
    public function uploadVideo()
    {
        try {
            // 获取文件
            $file = $this->request->file('file');
            // 检测文件是否存在
            if (!$file) {
                return json(['code' => 400, 'message' => 'No file uploaded']);
            }
            // 验证文件类型和大小 限制100M
            $maxSize = 100 * 1024 * 1024;
            if ($file->getSize() > $maxSize) {
                return json(['code' => 400, 'message' => 'The file size cannot exceed 1 GB']);
            }
            // 打开文件
            $openFile = fopen($file->getRealPath(), 'r');
            if (!$openFile) {
                return json(['code' => 400, 'message' => 'Failed to open the file']);
            }
            // 生成唯一的文件名
            $fileName = bin2hex(random_bytes(16)) . '.' . $file->getOriginalExtension();
            // 初始化s3客户端
            $s3Config = Config::get('common.aws_s3');
            $s3Obj = new AwsS3Handler($s3Config);
            $keyName = 'bourse-video-node/' . $fileName;
            $result = $s3Obj->putObject($keyName, $openFile, $file->getOriginalMime());
            fclose($openFile);
            Log::info("上传s3结果：". json_encode($result));
            if (!isset($result['data']['ObjectURL'])) {
                return json(['code' => 400, 'message' => '上传视频至s3失败']);
            }
            // 记录上传的文件
            $resData = AwsS3Model::create([
                'name' => $fileName,
                's3_url' => $result['data']['ObjectURL'],
                'size' => $file->getSize(),
                'mime' => $file->getOriginalMime(),
                'ext' => $file->getOriginalExtension(),
            ]);
            // 返回上传成功的地址
            return json(['code' => '0', 'message' => '上传成功', 'data' => [
                'id' => $resData->id,
                'url' => $result['data']['ObjectURL'],
                'name' => $fileName,
                'size' => $file->getSize(),
                'mime' => $file->getOriginalMime(),
                'ext'=> $file->getOriginalExtension(),
            ]]);
        } catch (\Exception $exception) {
            return json(['code' => '500', 'message' => '系统繁忙', 'data' => [$exception->getMessage()]]);
        }
    }

    // 创建分段上传，初始化一个新的上传任务，生成一个上传的唯一标识符
    public function initiateUpload(){
        try {
           $param = $this->request->post();
           if (empty($param['mime'])) {
               return json(['code' => 400, 'message' => '缺少参数mime']);
           }
           $getMime = trim($param['mime']);
           // 获取文件扩展名
            $mimeArr = explode('/', $getMime);
            $getExt = end($mimeArr);
            if (empty($getExt)) {
                return json(['code' => 400, 'message' => '提取文件扩展名错误']);
            }
            // 生成唯一的文件名
            $fileName = bin2hex(random_bytes(16)) . '.' . $getExt;
            // 初始化s3客户端
            $s3Config = Config::get('common.aws_s3');
            $s3Client = new S3Client([
                'version' => 'latest',
                'region'  => $s3Config['aws_region'],
                'credentials' => [
                    'key'    => $s3Config['aws_key'],
                    'secret' => $s3Config['aws_secret'],
                ],
            ]);
            // 初始化分段上传，获取上传Id
            $result = $s3Client->createMultipartUpload([
                'Bucket' => $s3Config['aws_bucket'],
                'Key'    => 'bourse-video-node/' . $fileName,
                'ContentType' => $getMime,
            ])->toArray();
            Log::info("初始化分段上传结果：".json_encode($result));
            if (empty($result['UploadId'])) {
                return json(['code' => 500, 'message' => '初始化分片上传失败','data'=>$result]);
            }
           AwsS3Model::create([
                'upload_id' => $result['UploadId'],
                'key' => 'bourse-video-node/' . $fileName,
                'parts' => '',
                'name' => $fileName,
                'mime' => $getMime,
                'ext' => $getExt,
            ]);

            return json([
                'code' => 0,
                'message' => 'success',
                'data' => [
                    'uploadId' => $result['UploadId'],
                    'key' => $result['Key']
                ]
            ]);
        } catch (\Exception $exception) {
            return json(['code' => '500', 'message' => '初始化分段上传失败', 'data' => [$exception->getMessage()]]);
        }
    }

    // 上传每个分段
    public function uploadPart(){
        try {
            $param = $this->request->param();
            if (empty($param['uploadId']) || empty($param['partNumber'])) {
                return json(['code' => 400, 'message' => '缺少参数']);
            }
            $file = $this->request->file('file');
            if (!$file) {
                return json(['code' => 400, 'message' => 'No file uploaded']);
            }
            // 每个分段大小限制  最大50M
            if ($file->getSize() > 100 * 1024 * 1024) {
                return json(['code' => 400, 'message' => 'File size is too large for multipart upload']);
            }
            // 打开文件
            $openFile = fopen($file->getRealPath(), 'r');
            if (!$openFile) {
                return json(['code' => 400, 'message' => 'Failed to open file']);
            }
            // 检查数据库中是否有对应上传记录
            $awsS3 = AwsS3Model::where(['upload_id'=>$param['uploadId']])->find();
            if (empty($awsS3) || empty($awsS3['key'])) {
                return json(['code' => 400, 'message' => 'uploadId对应的数据错误']);
            }
            // 初始化s3客户端
            $s3Config = Config::get('common.aws_s3');
            $s3Client = new S3Client([
                'version' => 'latest',
                'region'  => $s3Config['aws_region'],
                'credentials' => [
                    'key'    => $s3Config['aws_key'],
                    'secret' => $s3Config['aws_secret'],
                ],
            ]);
            $result = $s3Client->uploadPart([
                'Bucket' => $s3Config['aws_bucket'],
                'Key' => $awsS3['key'],
                'PartNumber' => $param['partNumber'],
                'UploadId' => $param['uploadId'],
                'Body' => $openFile,
            ])->toArray();
            fclose($openFile);
            Log::info("上传分段结果：".json_encode($result));
            if (empty($result['ETag'])) {
                return json(['code' => 400, 'message' => '上传分片失败']);
            }

            return json([
                'code' => 200,
                'message' => 'success',
                'data' => [
                    'ETag' => $result['ETag'],  // 每个分段的ETag
                    'PartNumber' => $param['partNumber'],
                    'key' => $param['key'],   // 存储在s3桶中的key
                ]
            ]);
        } catch (\Exception $exception) {
            if (isset($openFile)) {
                fclose($openFile);
            }
            return json(['code' => '500', 'message' => '上传失败', 'data' => [$exception->getMessage()]]);
        }
    }

    // 完成分段上传
    public function completeUpload(){
        try {
            $param = $this->request->param();
            if (empty($param['uploadId'])) {
                return json(['code' => 400, 'message' => '缺少参数']);
            }
            // 获取分段上传记录信息
            $awsS3 = AwsS3Model::where(['upload_id'=>trim($param['uploadId'])])->find();
            if (empty($awsS3) || empty($awsS3['key'])) {
                return json(['code' => 400, 'message' => 'uploadId对应的数据错误']);
            }
            // 初始化s3客户端
            $s3Config = Config::get('common.aws_s3');
            $s3Client = new S3Client([
                'version' => 'latest',
                'region'  => $s3Config['aws_region'],
                'credentials' => [
                    'key'    => $s3Config['aws_key'],
                    'secret' => $s3Config['aws_secret'],
                ],
            ]);
            // 获取已经上传的分片
            $getParts = $s3Client->listParts([
                'Bucket' => $s3Config['aws_bucket'],
                'Key' => $awsS3['key'],
                'UploadId' => trim($param['uploadId']),
            ]);
            if (empty($getParts) || !isset($getParts['Parts'])) {
                return json(['code' => 400, 'message' => '获取已上传的分片数据失败']);
            }
            // 按顺序组装分片数据
            $buildParts = [];
            foreach ($getParts['Parts'] as $p) {
                $buildParts[] = [
                    'PartNumber' => trim($p['PartNumber'], '"'),
                    'ETag' => $p['ETag']
                ];
            }
            $sortIndex = array_column($buildParts, 'PartNumber');
            array_multisort($sortIndex, SORT_ASC, $buildParts);
            Log::info("升序排列后的分片数据：".json_encode($buildParts));

            // 请求s3完成分段上传任务
            $result = $s3Client->completeMultipartUpload([
                'Bucket' => $s3Config['aws_bucket'],
                'Key' => $awsS3['key'],
                'UploadId' => $param['uploadId'],
                'MultipartUpload' => [
                    'Parts' => $buildParts
                ],
            ])->toArray();
            Log::info("完成分段上传结果：".json_encode($result));
            // 更新分片上传记录
            $awsS3->is_complete = 1;
            $awsS3->s3_url = $result['Location'];
            $awsS3->save();

            return json([
                'code' => 0,
                'message' => '上传成功',
                'data'=>[
                    'id' => $awsS3->id,
                    'uploadId' => $param['uploadId'],
                    'location' => $result['Location'],
                    ]
            ]);
        } catch (\Exception $exception) {
            return json(['code' => '500', 'message' => '完成上传失败', 'data' => [$exception->getMessage()]]);
        }
    }

    // 中止分段上传
    public function abortUpload(){
        try {
            $param = $this->request->param();
            if (empty($param['uploadId']) || empty($param['key'])) {
                return json(['code' => 400, 'message' => '缺少参数']);
            }
            // 初始化s3客户端
            $s3Config = Config::get('common.aws_s3');
            $s3Client = new S3Client([
                'version' => 'latest',
                'region'  => $s3Config['aws_region'],
                'credentials' => [
                    'key'    => $s3Config['aws_key'],
                    'secret' => $s3Config['aws_secret'],
                ],
            ]);
            $result = $s3Client->abortMultipartUpload([
                'Bucket' => $s3Config['aws_bucket'],
                'Key' => $param['key'],
                'UploadId' => $param['uploadId'],
            ]);
            Log::info('终止分段上传结果：'.json_encode($result));
            return json(['code' => 0, 'message' => '上传已取消']);
        } catch (\Exception $exception) {
            return json(['code' => '500', 'message' => '取消上传失败', 'data' => [$exception->getMessage()]]);
        }
    }

}