package oss

import (
	"errors"
	"eta_gn/eta_obs/global"
	"eta_gn/eta_obs/services/alarm_msg"
	"fmt"
	"github.com/aliyun/aliyun-oss-go-sdk/oss"
	"time"

	"eta_gn/eta_obs/utils"
	"github.com/aliyun/alibaba-cloud-sdk-go/services/sts"
)

type STSToken struct {
	AccessKeyId     string
	AccessKeySecret string
	SecurityToken   string
	ExpiredTime     string
	RegionId        string
	Bucketname      string
	Endpoint        string
	Imghost         string
}

// GetOssSTSToken 获取STSToken
func GetOssSTSToken() (item *STSToken, err error) {
	defer func() {
		if err != nil {
			global.FILE_LOG.Info(err.Error())
			go alarm_msg.SendAlarmMsg("获取STSToken失败, ErrMsg: "+err.Error(), 3)
		}
	}()
	item = new(STSToken)
	// 已过期则获取新的token
	newToken, e := NewSTSToken()
	if e != nil {
		err = errors.New("GetOssSTSToken NewSTSToken Err: " + e.Error())
		return
	}
	item = newToken

	return
}

// NewSTSToken 获取一个新的STSToken
func NewSTSToken() (item *STSToken, err error) {
	defer func() {
		if err != nil {
			global.FILE_LOG.Info("获取阿里云NewSTSToken失败", err.Error())
		}
	}()
	item = new(STSToken)

	client, e := sts.NewClientWithAccessKey(global.CONFIG.Oss.RegionId, global.CONFIG.Oss.Ram.AccessKeyId, global.CONFIG.Oss.Ram.AccessKeySecret)
	if e != nil {
		err = errors.New("NewSTSToken NewClient Err: " + e.Error())
		return
	}
	request := sts.CreateAssumeRoleRequest()
	request.Scheme = global.CONFIG.Oss.Ram.StsScheme
	request.RegionId = global.CONFIG.Oss.RegionId
	request.RoleArn = global.CONFIG.Oss.Ram.RoleArn
	now := time.Now().Format(utils.FormatDateTimeUnSpace)
	request.RoleSessionName = global.CONFIG.Oss.Ram.RoleSessionName + now
	request.DurationSeconds = "3600"
	request.ConnectTimeout = 300 * time.Second
	request.ReadTimeout = 300 * time.Second

	response, e := client.AssumeRole(request)
	if e != nil {
		err = errors.New("NewSTSToken AssumeRole Err: " + e.Error())
		return
	}
	if response != nil {
		item.AccessKeyId = response.Credentials.AccessKeyId
		item.AccessKeySecret = response.Credentials.AccessKeySecret
		item.SecurityToken = response.Credentials.SecurityToken
		t, _ := time.Parse(time.RFC3339, response.Credentials.Expiration)
		expiration := t.In(time.Local)
		item.ExpiredTime = expiration.Format(utils.FormatDateTime)
		item.RegionId = global.CONFIG.Oss.RegionId
		item.Bucketname = global.CONFIG.Oss.BucketName
		item.Endpoint = global.CONFIG.Oss.EndPoint
		item.Imghost = global.CONFIG.Oss.ImgHost
	}
	return
}

// UploadAliyunToDir 上传至hzchart
//func UploadAliyunToDir(filename, filepath, uploadDir, fileDir string) (string, error) {
//	if utils.AccessKeyId == `` {
//		return "0", errors.New("阿里云信息未配置")
//	}
//	client, err := oss.New(utils.Endpoint, utils.AccessKeyId, utils.AccessKeySecret)
//	if err != nil {
//		return "1", err
//	}
//	bucket, err := client.Bucket(utils.Bucketname)
//	if err != nil {
//		return "2", err
//	}
//	if uploadDir == "" {
//		uploadDir = utils.UploadDir
//	}
//	if fileDir == "" {
//		fileDir = time.Now().Format("200601/20060102/")
//	}
//	path := uploadDir + fileDir
//	path += filename
//	err = bucket.PutObjectFromFile(path, filepath)
//	if err != nil {
//		return "3", err
//	}
//	path = utils.Imghost + path
//	return path, err
//}

type AliOss struct{}

// UploadFile 上传文件
func (m *AliOss) UploadFile(fileName, filePath, savePath string) (string, error) {
	if global.CONFIG.Oss.AccessKeyId == `` {
		return "0", errors.New("阿里云信息未配置")
	}
	client, err := oss.New(global.CONFIG.Oss.EndPoint, global.CONFIG.Oss.AccessKeyId, global.CONFIG.Oss.AccessKeySecret)
	if err != nil {
		return "1", err
	}
	bucket, err := client.Bucket(global.CONFIG.Oss.BucketName)
	if err != nil {
		return "2", err
	}

	path := savePath
	if savePath == "" {
		path = global.CONFIG.Oss.UploadDir + time.Now().Format("200601/20060102/") + fileName
	}
	err = bucket.PutObjectFromFile(path, filePath)
	if err != nil {
		return "3", err
	}
	resourceUrl := global.CONFIG.Oss.ImgHost + path
	return resourceUrl, err
}

func (m *AliOss) GetUploadToken() (token OssToken, err error) {
	stsToken, e := GetOssSTSToken()
	if e != nil {
		err = fmt.Errorf("GetOssSTSToken err: %s", e.Error())
		return
	}
	token.AccessKeyId = stsToken.AccessKeyId
	token.AccessKeySecret = stsToken.AccessKeySecret
	token.SecurityToken = stsToken.SecurityToken
	token.ExpiredTime = stsToken.ExpiredTime
	token.RegionId = stsToken.RegionId
	token.Bucketname = stsToken.Bucketname
	token.Endpoint = stsToken.Endpoint
	token.Imghost = stsToken.Imghost
	return
}