package osssvr

import (
	"context"
	"fmt"
	"io"

	"git.wenlab.co/joe/kettle/oss"

	"github.com/qiniu/go-sdk/v7/auth/qbox"
	"github.com/qiniu/go-sdk/v7/storage"
)

const (
	DEF_REGION = storage.RIDHuabei
)

type QiniuOption func(*QiniuOss)

func WithHTTPS(use bool) QiniuOption {
	return func(qo *QiniuOss) {
		qo.https = use
	}
}

func WithCDN(use bool) QiniuOption {
	return func(qo *QiniuOss) {
		qo.cdn = use
	}
}

func WithRegion(region storage.RegionID) QiniuOption {
	return func(qo *QiniuOss) {
		qo.region = region
	}
}

func NewQiniuOss(accessKey, secretKey, bucket string, opts ...QiniuOption) oss.IOss {
	qiniu := &QiniuOss{
		accessKey: accessKey,
		secretKey: secretKey,
		bucket:    bucket,
		region:    DEF_REGION,
		https:     false,
		cdn:       false,
	}

	for _, opt := range opts {
		opt(qiniu)
	}

	return qiniu
}

type QiniuOss struct {
	accessKey, secretKey string
	bucket               string
	region               storage.RegionID
	https                bool
	cdn                  bool
}

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:      self.https,
		UseCdnDomains: self.cdn,
	}
	formUploader := storage.NewFormUploader(&cfg)
	putExtra := storage.PutExtra{}
	ret := qiniuUploadReturn{}
	err := formUploader.PutFile(context.Background(), &ret, upToken, key, absPath, &putExtra)
	//fmt.Printf("%v\n", ret)
	return ret.Key, 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:      self.https,
		UseCdnDomains: self.cdn,
	}
	formUploader := storage.NewFormUploader(&cfg)
	putExtra := storage.PutExtra{}
	ret := qiniuUploadReturn{}
	err := formUploader.Put(context.Background(), &ret, upToken, key, reader, len, &putExtra)
	return ret.Key, 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 {
	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 == nil
}