add README.md in line and drop unecessary module and code

@@ -50,6 +50,7 @@ app.listen(SERVER_PORT, () => {
   console.log("Server is running on port", process.env.SERVER_PORT);
 });
 
+//for Line Channel
 try {
   const option = {
     ca: fs.readFileSync('/etc/letsencrypt/live/' + DOMAIN +'/fullchain.pem'),

 const Router = require("koa-router");
 const auth = new Router();
 const authCtrl = require("./auth.ctrl");
-const kakaoAuth = require("./kakaoAuth");
 
 auth.post("/login", authCtrl.login);
 auth.post("/logout", authCtrl.logout);
 auth.post("/register", authCtrl.register);
 auth.get("/check", authCtrl.check);
 
-auth.post("/kakaotoken", kakaoAuth.kakaotoken);
-
 module.exports = auth;

-const request = require('request');
-const querystring = require('querystring');
-
-
-exports.kakaotoken = async (ctx) => {
-  const token = ctx.request.body;
-
-  'http://kapi.kakao.com/v2/api/talk/memo/default/send'
-
-  console.log(ctx);
-  console.log("token setted", token);
-  let template_objectObj = {
-    object_type: "text",
-    text: "hi", link: {
-      web_url: "https://developers.kakao.com",
-    }
-  };
-
-  let template_objectStr = JSON.stringify(template_objectObj);
-  console.log(template_objectStr);
-  let options = {
-    url: "http://kapi.kakao.com/v2/api/talk/memo/default/send",
-    method: "POST",
-    headers: {
-      "Authorization": "Bearer ".concat(token),
-      "Content-Type": "application/x-www-form-urlencoded"
-    }, form: {
-      template_object: template_objectStr
-    }
-  };
-  request.post(options, (err, res, body) => {
-    if (err != null) {
-      console.log(err);
-    }
-  });
-};
\ No newline at end of file

@@ -8,8 +8,17 @@ const Profile = require("../../models/profile");
 const problem_set = require("../../data/problem_set");
 const compareBJ = require("../../util/compareBJ");
 
+/*
+    username : default = ""
+*/
 let username = "";
 
+/*
+POST api/line/hook
+{
+    for line reply : recommend and set
+}
+ */
 exports.linestart = async(ctx) => {
   var eventObj = ctx.request.body.events[0];
  
@@ -20,6 +29,7 @@ exports.linestart = async(ctx) => {
   console.log('[request message]', eventObj.message);
   console.log('[username]', username);
 
+  //first . set User
   if(username == "") {
     username = eventObj.message.text;
 
@@ -38,7 +48,7 @@ exports.linestart = async(ctx) => {
                   "messages":[
                       {
                           "type":"text",
-                          "text": "작심삼일 혹은 백준 사이트의 ID값이 올바르지 않습니다. 다시 입력해주세요."
+                          "text": "작심삼일 사이트의 ID값이 올바르지 않습니다. 다시 입력해주세요."
                       }
                   ]
               }
@@ -67,7 +77,7 @@ exports.linestart = async(ctx) => {
 	}
   };
 
-
+  //second. can reset username
   if(eventObj.message.text == "reset ID") {
     username = "";
     request.post(
@@ -81,7 +91,7 @@ exports.linestart = async(ctx) => {
               "messages":[
                   {
                       "type":"text",
-                      "text": "작심삼일 혹은 백준 사이트의 ID가 초기화 되었습니다."
+                      "text": "작심삼일 사이트의 ID가 초기화 되었습니다."
                   }
               ]
           }
@@ -90,7 +100,7 @@ exports.linestart = async(ctx) => {
       });
   }
   
-
+  //main : recommend Problem
   if(eventObj.message.text == "문제") {
     console.log("문제를 추천합니다.");
     let recommendData = await lineRecommend(username);
@@ -101,6 +111,7 @@ exports.linestart = async(ctx) => {
 
 }
 
+//for recommend message
 function recommendBJ(replyToken, recommendData) {
   var recommendProblem = "오늘의 추천문제는 " + recommendData.problem_title + "입니다.";
   var problemURL = "https://www.boj.kr/" + recommendData.problem_number;

 const Router = require("koa-router");
 const profile = new Router();
 const profileCtrl = require("./profile.ctrl");
+
 profile.post("/solved:id");
 profile.get("/solvednum:id");
 profile.post("/recommend", profileCtrl.recommend);
 profile.patch("/syncBJ", profileCtrl.syncBJ);
 profile.post("/setprofile", profileCtrl.setProfile);
 profile.post("/getprofile", profileCtrl.getProfile);
+
 module.exports = profile;