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| package line
import (
"bytes"
"fmt"
"image"
_ "image/gif"
_ "image/png"
"image/jpeg"
"io"
"io/ioutil"
"mime/multipart"
"net/url"
"net/http"
"net/textproto"
"strings"
)
const (
lineNotifyURL = "https://notify-api.line.me/api/notify"
)
func NotifyLineMessage(message, token string) error {
if token == "" {
return fmt.Errorf("line: no token")
} else if message == "" {
return fmt.Errorf("line: no message")
}
data := url.Values{"message": {message}}
r, _ := http.NewRequest("POST", lineNotifyURL, strings.NewReader(data.Encode()))
r.Header.Set("Content-Type", "application/x-www-form-urlencoded")
r.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
resp, err := http.DefaultClient.Do(r)
if err != nil {
return fmt.Errorf("line: %v", err)
}
defer resp.Body.Close()
respBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
return fmt.Errorf("line: %v", err)
}
if resp.StatusCode != 200 {
return fmt.Errorf("line: %s: %v", respBody, err)
}
return nil
}
func convert2Jpeg(img io.Reader) (io.Reader, error) {
dimg, _, err := image.Decode(img)
if err != nil {
return nil, err
}
var b bytes.Buffer
err = jpeg.Encode(&b, dimg, &jpeg.Options{Quality: 100})
return &b, err
}
func NotifyLineImage(img io.Reader, filename, message, token string) error {
if token == "" {
return fmt.Errorf("line: no token")
}
body := &bytes.Buffer{}
mw := multipart.NewWriter(body)
ffw, err := mw.CreateFormField("message")
if err != nil {
return fmt.Errorf("line: %v", err)
}
if _, err = ffw.Write([]byte(message)); err != nil {
return fmt.Errorf("line: %v", err)
}
part := make(textproto.MIMEHeader)
part.Set("Content-Disposition", `form-data; name="imageFile"; filename=`+filename)
part.Set("Content-Type", "image/jpeg")
fw, err := mw.CreatePart(part)
if err != nil {
return fmt.Errorf("line: %v", err)
}
cimg, err := convert2Jpeg(img)
if err != nil {
return fmt.Errorf("line: %v", err)
}
_, err = io.Copy(fw, cimg)
if err != nil {
return fmt.Errorf("line: %v", err)
}
err = mw.Close()
if err != nil {
return fmt.Errorf("line: %v", err)
}
r, _ := http.NewRequest("POST", lineNotifyURL, body)
r.Header.Set("Content-Type", mw.FormDataContentType())
r.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
resp, err := http.DefaultClient.Do(r)
if err != nil {
return fmt.Errorf("line: %v", err)
}
defer resp.Body.Close()
respBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
return fmt.Errorf("line: %v", err)
}
if resp.StatusCode != 200 {
return fmt.Errorf("line: %s: %v", respBody, err)
}
return nil
}
|