func textMessageHandler(w http.ResponseWriter, r *http.Request) {
ctx := appengine.NewContext(r)
to := r.FormValue("to")
text := r.FormValue("text")
log.Debugf(ctx, "to: %s, text: %s.", to, text)
chi, _ := strconv.ParseInt(os.Getenv("CHANNEL_ID"), 10, 64)
chs := os.Getenv("CHANNEL_SECRET")
mid := os.Getenv("MID")
client := urlfetch.Client(ctx)
bot, err := linebot.NewClient(chi, chs, mid, linebot.WithHTTPClient(client))
if err != nil {
log.Errorf(ctx, "Client initialization failure. to: %s, text: %s, context: %s", to, text, err.Error())
w.WriteHeader(http.StatusInternalServerError)
return
}
res, err := bot.SendText([]string{to}, text)
if err != nil {
log.Errorf(ctx, "Message Send Failed. to: %s, text: %s, context: %s", to, text, err.Error())
w.WriteHeader(http.StatusInternalServerError)
return
}
log.Infof(ctx, "Message send succeed. MessageID: %s, to: %s, text: %s", res.MessageID, to, text)
w.WriteHeader(http.StatusOK)
}
func main() {
strID := os.Getenv("ChannelID")
numID, err := strconv.ParseInt(strID, 10, 64)
if err != nil {
log.Fatal("Wrong environment setting about ChannelID")
}
bot, err = linebot.NewClient(numID, os.Getenv("ChannelSecret"), os.Getenv("MID"))
log.Println("Bot:", bot, " err:", err)
http.HandleFunc("/callback", callbackHandler)
port := os.Getenv("PORT")
addr := fmt.Sprintf(":%s", port)
http.ListenAndServe(addr, nil)
}
func callbackHandler(w http.ResponseWriter, r *http.Request) {
ctx := appengine.NewContext(r)
chi, err := strconv.ParseInt(os.Getenv("CHANNEL_ID"), 10, 64)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
return
}
chs := os.Getenv("CHANNEL_SECRET")
mid := os.Getenv("MID")
bot, err := linebot.NewClient(chi, chs, mid)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
return
}
received, err := bot.ParseRequest(r)
if err != nil {
if err == linebot.ErrInvalidSignature {
w.WriteHeader(http.StatusBadRequest)
} else {
w.WriteHeader(http.StatusInternalServerError)
}
return
}
for _, result := range received.Results {
content := result.Content()
if content != nil && content.IsMessage && content.ContentType == linebot.ContentTypeText {
text, _ := content.TextContent()
log.Debugf(ctx, "id: %s, text: %s, from: %s, to: %v", content.ID, text.Text, text.From, text.To)
values := url.Values{}
values.Set("to", text.From)
values.Set("text", text.Text)
t := taskqueue.NewPOSTTask(TEXT_URI, values)
_, err = taskqueue.Add(ctx, t, TEXT_MESSAGE_QUEUE)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
return
}
}
}
w.WriteHeader(http.StatusOK)
}
