Add MovieRecommend file

+const request = require('request');
+var config = require('./config.json');
+const TARGET_URL = 'https://api.line.me/v2/bot/message/reply'
+const TOKEN = config.TOKEN;
+const KOFIC_URL = 'http://www.kobis.or.kr/kobisopenapi/webservice/rest'
+
+//Return random integer.
+function getRandomInt(min, max) {
+    min = Math.ceil(min);
+    max = Math.floor(max);
+    return Math.floor(Math.random() * (max - min)) + min; //Exclude maximum value, include minimum value
+}
+
+//Get weekend boxoffice movie code.
+//Then return list fill with movie code.
+function weekendBoxOfficeMovie() {
+    var year = String(getRandomInt(2010,2023));
+    var date = String(getRandomInt(1,13));
+    if(year == 2022){
+        date = String(getRandomInt(1,6));
+    }
+    if(date < 10){
+        date = '0'+date;
+    }
+    date += '15';
+    return new Promise((resolve) => { 
+        var moviecode = [];
+        request.get(
+            {   
+                url: KOFIC_URL+`/boxoffice/searchWeeklyBoxOfficeList.json?key=${config.KOFIC_KEY}&targetDt=${year + date}&itemPerPage=7`,
+                json:true
+            },(error, response, body) => {
+                if(!error && response.statusCode == 200) {
+                    for(let i = 0; i < body.boxOfficeResult.weeklyBoxOfficeList.length; i++){
+                        moviecode.push(body.boxOfficeResult.weeklyBoxOfficeList[i].movieCd)
+                    }
+                    resolve(moviecode)
+            }
+        });    
+    });
+}
+//Returns the title, year of release, names of directors and actors.
+//The return format is array and index is as follows:
+//[title, year of release, director, actor1, actor2]
+async function movieinfo(message){
+    moviecdlist = await weekendBoxOfficeMovie();
+    
+    return new Promise((resolve) => {
+    movieresult = [];
+    for(let i = 0; i < moviecdlist.length; i++){
+        request.get(
+            {
+                url: KOFIC_URL + `/movie/searchMovieInfo.json?key=${config.KOFIC_KEY}&movieCd=${moviecdlist[i]}`,
+                json:true
+            }
+        ,(error,response, body) => {
+            if(!error && response.statusCode == 200) {
+                for(let j = 0; j < body.movieInfoResult.movieInfo.genres.length; j++){
+                    if(body.movieInfoResult.movieInfo.genres[j].genreNm == message){
+                        var title = body.movieInfoResult.movieInfo.movieNm;
+                        var openyear = body.movieInfoResult.movieInfo.prdtYear;
+                        if(body.movieInfoResult.movieInfo.directors.length == 0){
+                            var director = "감독정보없음"
+                        }
+                        else{
+                            var director = body.movieInfoResult.movieInfo.directors[0].peopleNm
+                        }
+                        if(body.movieInfoResult.movieInfo.actors.length == 0){
+                            var actor_1 = "배우정보없음"
+                            var actor_2 = "배우정보없음"
+                        }
+                        else if(body.movieInfoResult.movieInfo.actors.length == 1){
+                            var actor_1 = body.movieInfoResult.movieInfo.actors[0].peopleNm
+                            var actor_2 = "배우정보없음"
+                        }
+                        else{
+                            var actor_1 = body.movieInfoResult.movieInfo.actors[0].peopleNm
+                            var actor_2 = body.movieInfoResult.movieInfo.actors[1].peopleNm
+                        }
+                        movieresult.push([title, openyear, director, actor_1, actor_2])
+
+                    } //제목, 개봉년도, 감독, 배우1, 배우2
+                }
+                resolve(movieresult);
+                }
+            });
+        }
+    });
+}
+
+//Enter a movie genre in the message variable.
+//It will then return movie title, year of release, director and actor information to Line Messenger.
+exports.movieRecommend = async function(replyToken, message){
+    var movieresult = [];
+    while(1){
+        movielist = await movieinfo(message);
+        for(let i = 0; i < movielist.length; i ++){
+            movieresult.push(movielist[i]);
+        }
+        if(movieresult.length > 1){
+            break;
+        }
+    }
+    var movierecommend_output = '';
+    for(let i = 0; i < movieresult.length; i++){
+        movierecommend_output += `제목: ${movieresult[i][0]}(${movieresult[i][1]})\n감독: ${movieresult[i][2]}\n배우: ${movieresult[i][3]}, ${movieresult[i][4]}\n`
+    }
+    request.post(
+        {
+            url: TARGET_URL,
+            headers: {
+                'Authorization': `Bearer ${TOKEN}`
+            },
+            json: {
+                "replyToken":replyToken,
+                "messages":[
+                    {
+                        "type":"text",
+                        "text":movierecommend_output
+                    }
+                ]
+            }
+        },(error, response, body) => {
+            console.log(body)
+    });
+}
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