package file

import (
	"context"
	"fusenapi/model/gmodel"
	"fusenapi/utils/basic"
	"time"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/request"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/s3"
	"github.com/zeromicro/go-zero/core/logx"
	"gorm.io/gorm"
)

type Upload struct {
	Ctx        context.Context
	MysqlConn  *gorm.DB
	AwsSession *session.Session
}

type UploadBaseReq struct {
	FileHash     string
	FileData     string
	Metadata     string
	UploadBucket int64
	ApiType      int64
	UserId       int64
	GuestId      int64
}

type UploadBaseRes struct {
	Key          string `json:"key"`
	Status       int64  `json:"status"`
	ApiType      int64  `json:"api_type"`
	ResourceId   string `json:"resource_id"`
	ResourceType string `json:"resource_type"`
	ResourceUrl  string `json:"resource_url"`
}

func (upload *Upload) UploadFileByBase64(req *UploadBaseReq) (*UploadBaseRes, error) {
	// 定义存储桶名称
	var bucketName *string
	var apiType int64 = req.ApiType

	// 根据类别选择存储桶
	switch req.UploadBucket {
	case 2:
		bucketName = basic.TempfileBucketName
	default:
		bucketName = basic.StorageBucketName
	}

	// 设置AWS会话的区域
	upload.AwsSession.Config.Region = aws.String("us-west-1")

	// 创建新的S3服务实例
	svc := s3.New(upload.AwsSession)

	// 定义S3请求和当前时间
	var s3req *request.Request

	var resourceId string = req.FileHash

	var uploadBaseRes = UploadBaseRes{}
	resourceModel := gmodel.NewFsResourceModel(upload.MysqlConn)
	resourceInfo, err := resourceModel.FindOneById(upload.Ctx, resourceId)
	if err == nil && resourceInfo.ResourceId != "" {
		uploadBaseRes.Status = 1
		uploadBaseRes.ResourceId = resourceId
		uploadBaseRes.ResourceUrl = *resourceInfo.ResourceUrl
	} else {
		dist, contentType, err := FileBase64ToByte(req.FileData)

		if err != nil {
			logx.Errorf("err:%+v，desc:%+v", err, "fail.upload.resourceInfoGet.mysql")
			return nil, err
		}

		// 创建S3对象存储请求
		s3req, _ = svc.PutObjectRequest(
			&s3.PutObjectInput{
				Bucket: bucketName,
				Key:    &resourceId,
			},
		)

		// 设置请求体为文件数据
		s3req.SetBufferBody(dist)

		// 发送请求
		err = s3req.Send()

		// 检查是否有错误
		if err != nil {
			logx.Errorf("err:%+v，desc:%+v", err, "fail.upload.s3req")
			return nil, err
		} else {
			var url = s3req.HTTPRequest.URL.String()
			// 打印请求URL
			logx.Info(url)
			uploadBaseRes.Status = 1
			uploadBaseRes.ResourceId = resourceId
			uploadBaseRes.ResourceUrl = url
			var version string = "0.0.1"
			var nowTime = time.Now()
			_, err = resourceModel.Create(upload.Ctx, &gmodel.FsResource{
				ResourceId:   resourceId,
				UserId:       &req.UserId,
				GuestId:      &req.GuestId,
				ResourceType: &contentType,
				ResourceUrl:  &url,
				Version:      &version,
				UploadedAt:   &nowTime,
				Metadata:     &req.Metadata,
				ApiType:      &apiType,
				BucketName:   bucketName,
			})
			if err != nil {
				logx.Errorf("err:%+v，desc:%+v", err, "fail.upload.resourceInfoAdd.mysql")
				return nil, err
			}
		}
	}
	return &uploadBaseRes, err
}