/
qrcode.go
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/
qrcode.go
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/*
* Copyright 2020 opensourceai
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package qrcode
import (
"image/jpeg"
"github.com/boombuler/barcode"
"github.com/boombuler/barcode/qr"
"github.com/opensourceai/go-api-service/pkg/file"
"github.com/opensourceai/go-api-service/pkg/setting"
"github.com/opensourceai/go-api-service/pkg/util"
)
type QrCode struct {
URL string
Width int
Height int
Ext string
Level qr.ErrorCorrectionLevel
Mode qr.Encoding
}
const (
EXT_JPG = ".jpg"
)
// NewQrCode initialize instance
func NewQrCode(url string, width, height int, level qr.ErrorCorrectionLevel, mode qr.Encoding) *QrCode {
return &QrCode{
URL: url,
Width: width,
Height: height,
Level: level,
Mode: mode,
Ext: EXT_JPG,
}
}
// GetQrCodePath get save path
func GetQrCodePath() string {
return setting.AppSetting.QrCodeSavePath
}
// GetQrCodeFullPath get full save path
func GetQrCodeFullPath() string {
return setting.AppSetting.RuntimeRootPath + setting.AppSetting.QrCodeSavePath
}
// GetQrCodeFullUrl get the full access path
func GetQrCodeFullUrl(name string) string {
return setting.AppSetting.PrefixUrl + "/" + GetQrCodePath() + name
}
// GetQrCodeFileName get qr file name
func GetQrCodeFileName(value string) string {
return util.EncodeMD5(value)
}
// GetQrCodeExt get qr file ext
func (q *QrCode) GetQrCodeExt() string {
return q.Ext
}
// Encode generate QR code
func (q *QrCode) Encode(path string) (string, string, error) {
name := GetQrCodeFileName(q.URL) + q.GetQrCodeExt()
src := path + name
if file.CheckNotExist(src) == true {
code, err := qr.Encode(q.URL, q.Level, q.Mode)
if err != nil {
return "", "", err
}
code, err = barcode.Scale(code, q.Width, q.Height)
if err != nil {
return "", "", err
}
f, err := file.MustOpen(name, path)
if err != nil {
return "", "", err
}
defer f.Close()
err = jpeg.Encode(f, code, nil)
if err != nil {
return "", "", err
}
}
return name, path, nil
}