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// Copyright 2016 LINE Corporation
//
// LINE Corporation licenses this file to you 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 main
import (
"log"
"net/http"
"os"
"github.com/line/line-bot-sdk-go/linebot"
)
func main() {
bot, err := linebot.New(
os.Getenv("CHANNEL_SECRET"),
os.Getenv("CHANNEL_TOKEN"),
)
if err != nil {
log.Fatal(err)
}
// Setup HTTP Server for receiving requests from LINE platform
http.HandleFunc("/callback", func(w http.ResponseWriter, req *http.Request) {
events, err := bot.ParseRequest(req)
if err != nil {
if err == linebot.ErrInvalidSignature {
w.WriteHeader(400)
} else {
w.WriteHeader(500)
}
return
}
for _, event := range events {
if event.Type == linebot.EventTypeMessage {
switch message := event.Message.(type) {
case *linebot.TextMessage:
if _, err = bot.ReplyMessage(event.ReplyToken, linebot.NewTextMessage(message.Text)).Do(); err != nil {
log.Print(err)
}
}
}
}
})
// This is just sample code.
// For actual use, you must support HTTPS by using `ListenAndServeTLS`, a reverse proxy or something else.
if err := http.ListenAndServe(":"+os.Getenv("PORT"), nil); err != nil {
log.Fatal(err)
}
}