line bot

[shungo0525]

• https://developers.line.biz/ja/docs/messaging-api/sending-messages/
• https://zenn.dev/endo/articles/b7489546a5b759c3f0a5#bot%E4%BD%9C%E6%88%90
• https://github.com/line/line-bot-sdk-go

 go get github.com/line/line-bot-sdk-go/v7/linebot

[shungo0525]

package main

import (
  "log"
  "net/http"
  "math/rand"
  "time"

  "github.com/line/line-bot-sdk-go/v7/linebot"
  "github.com/PuerkitoBio/goquery"
)

// NOTE: ハロプロ
const LINE_BOT_CHANNEL_SECRET = "b66d538b03a93231f0cf0a6da939b343"
const LINE_BOT_CHANNEL_TOKEN = "pKyiodiIqLMz77Ekiliq2jY3ZTkKOXjZ/HVyOttlThVNgfL9RnEmcO+6NY3OxkTKdGthHxp04X1BhKj4nHZ/5g4V31f/AddlVEt2dks+rS7FY/U4U8Uczb7qgsrtWNktiHtS9bg5B+AAhNYzx3bJ1gdB04t89/1O/w1cDnyilFU="
const URL = "http://hpmatome.antena.biz/"
const CLASS_NAME = "div.blog_a > a"

func main() {
  url := get_url()
  send_linebot(url)
}

func get_url() (url string) {
  res, err := http.Get(URL)
  if err != nil {
    log.Println("htmlの取得に失敗しました", err)
    return
  }
  defer res.Body.Close()

  doc, _ := goquery.NewDocumentFromReader(res.Body)
  urls := make([]string, 0)

  doc.Find(CLASS_NAME).Each(func(i int, s *goquery.Selection) {
    url, _ := s.Attr("href")
    urls = append(urls, url)
  })
  rand.Seed(time.Now().UnixNano())
  index := rand.Intn(len(urls)-1)

  return urls[index]
}

func send_linebot(url string) {
  bot, err := linebot.New(LINE_BOT_CHANNEL_SECRET,LINE_BOT_CHANNEL_TOKEN)
  if err != nil {
    log.Fatal(err)
  }

  message := linebot.NewTextMessage(url)
  
  // NOTE: テキストメッセージを友達登録しているユーザー全員に配信する
  if _, err := bot.BroadcastMessage(message).Do(); err != nil {
    log.Fatal(err)
  }
}

[shungo0525]

• Lambda
  • ローカルでも実行できるようにする
• API Gateway

[shungo0525]

• オウム返し
  • https://github.com/yagi-eng/go-linebot-start/blob/parrot/answer/main.go