package providers

import (
	"context"
	"fmt"
	"github.com/qiniu/go-sdk/v7/auth/qbox"
	"github.com/qiniu/go-sdk/v7/storage"
	"io"
	"one.com/kettle/oss"
)

const (
	QINIU_REGION_HUANAN = storage.RIDHuanan
)

func NewQiniuOss(accessKey, secretKey, bucket string, region storage.RegionID) oss.IOss {
	return &qiniuOss{
		accessKey: accessKey,
		secretKey: secretKey,
		bucket:    bucket,
		region:    region,
	}
}

type qiniuOss struct {
	accessKey, secretKey string
	bucket               string
	region               storage.RegionID
}

type qiniuUploadReturn struct {
	Key, Hash    string
	Fsize        int
	Bucket, Name string
}

func (self *qiniuOss) UploadFile(absPath string, key string, conf *oss.UploadConf) (string, error) {
	scope := self.bucket
	if conf != nil && conf.Overwrite {
		scope = fmt.Sprintf("%s:%s", self.bucket, key)
	}
	putPolicy := storage.PutPolicy{
		Scope:      scope,
		ReturnBody: `{"key":"$(key)", "hash":"$(etag)", "fsize":$(fsize),"bucket":"$(bucket)","name":"$(x:name)"}`,
	}
	mac := qbox.NewMac(self.accessKey, self.secretKey)
	upToken := putPolicy.UploadToken(mac)
	zone, found := storage.GetRegionByID(self.region)
	if !found {
	}
	cfg := storage.Config{
		Zone:          &zone,
		UseHTTPS:      false,
		UseCdnDomains: false,
	}
	formUploader := storage.NewFormUploader(&cfg)
	putExtra := storage.PutExtra{}
	ret := qiniuUploadReturn{}
	err := formUploader.PutFile(context.Background(), &ret, upToken, key, absPath, &putExtra)
	return ret.Name, err
}

func (self *qiniuOss) Upload(reader io.Reader, len int64, key string, conf *oss.UploadConf) (string, error) {
	scope := self.bucket
	if conf != nil && conf.Overwrite {
		scope = fmt.Sprintf("%s:%s", self.bucket, key)
	}
	putPolicy := storage.PutPolicy{
		Scope:      scope,
		ReturnBody: `{"key":"$(key)", "hash":"$(etag)", "fsize":$(fsize),"bucket":"$(bucket)","name":"$(x:name)"}`,
	}
	mac := qbox.NewMac(self.accessKey, self.secretKey)
	upToken := putPolicy.UploadToken(mac)
	zone, found := storage.GetRegionByID(self.region)
	if !found {
	}
	cfg := storage.Config{
		Zone:          &zone,
		UseHTTPS:      false,
		UseCdnDomains: false,
	}
	formUploader := storage.NewFormUploader(&cfg)
	putExtra := storage.PutExtra{}
	ret := qiniuUploadReturn{}
	err := formUploader.Put(context.Background(), &ret, upToken, key, reader, len, &putExtra)
	return ret.Name, err
}

func (self *qiniuOss) Delete(key string) error {
	mac := qbox.NewMac(self.accessKey, self.secretKey)
	cfg := storage.Config{
		UseHTTPS: false,
	}
	bucketManager := storage.NewBucketManager(mac, &cfg)
	return bucketManager.Delete(self.bucket, key)
}

func (self *qiniuOss) Exists(key string) (bool, error) {
	mac := qbox.NewMac(self.accessKey, self.secretKey)
	cfg := storage.Config{
		UseHTTPS: false,
	}
	bucketManager := storage.NewBucketManager(mac, &cfg)
	fileInfo, err := bucketManager.Stat(self.bucket, key)
	return len(fileInfo.Hash) > 0, err
}