MaysWind
52 lines
1.2 KiB
Go
52 lines
1.2 KiB
Go
package api
|
|
|
|
import (
|
|
"bytes"
|
|
"image/png"
|
|
|
|
"github.com/boombuler/barcode"
|
|
"github.com/boombuler/barcode/qr"
|
|
|
|
"github.com/mayswind/ezbookkeeping/pkg/core"
|
|
"github.com/mayswind/ezbookkeeping/pkg/errs"
|
|
"github.com/mayswind/ezbookkeeping/pkg/settings"
|
|
)
|
|
|
|
const (
|
|
qrCodeDefaultWidth int = 320
|
|
qrCodeDefaultHeight int = 320
|
|
)
|
|
|
|
// QrCodesApi represents qrcode generator api
|
|
type QrCodesApi struct {
|
|
}
|
|
|
|
// Initialize a qrcode generator api singleton instance
|
|
var (
|
|
QrCodes = &QrCodesApi{}
|
|
)
|
|
|
|
// MobileUrlQrCodeHandler returns a mobile url qr code image
|
|
func (a *QrCodesApi) MobileUrlQrCodeHandler(c *core.Context) ([]byte, string, *errs.Error) {
|
|
fullUrl := settings.Container.Current.RootUrl + "mobile"
|
|
data, err := a.generateUrlQrCode(c, fullUrl)
|
|
|
|
if err != nil {
|
|
return nil, "", errs.ErrOperationFailed
|
|
}
|
|
|
|
return data, "", nil
|
|
}
|
|
|
|
func (a *QrCodesApi) generateUrlQrCode(c *core.Context, url string) ([]byte, *errs.Error) {
|
|
qrCodeImg, _ := qr.Encode(url, qr.M, qr.Auto)
|
|
qrCodeImg, _ = barcode.Scale(qrCodeImg, qrCodeDefaultWidth, qrCodeDefaultHeight)
|
|
imgData := &bytes.Buffer{}
|
|
|
|
if err := png.Encode(imgData, qrCodeImg); err != nil {
|
|
return nil, errs.ErrOperationFailed
|
|
}
|
|
|
|
return imgData.Bytes(), nil
|
|
}
|