Merge commit '02ae3279' into feature/database

-SERVER_PORT=4000
-MONGO_URL=mongodb://localhost:27017/jaksimsamil
\ No newline at end of file

 {
-    "env": {
-        "commonjs": true,
-        "es6": true,
-        "node": true
-    },
-    "extends": "eslint:recommended",
-    "globals": {
-        "Atomics": "readonly",
-        "SharedArrayBuffer": "readonly"
-    },
-    "parserOptions": {
-        "ecmaVersion": 11
-    },
-    "rules": {
-    }
+  "parser": "babel-eslint",
+  "env": {
+    "commonjs": true,
+    "es6": true,
+    "node": true
+  },
+  "extends": "eslint:recommended",
+  "globals": {
+    "Atomics": "readonly",
+    "SharedArrayBuffer": "readonly"
+  },
+  "parserOptions": {
+    "ecmaVersion": 11
+  },
+  "rules": {}
 }

@@ -21,14 +21,17 @@
 | group   | description              | method | URL                        | Detail   | Auth      |
 | ------- | ------------------------ | ------ | -------------------------- | -------- | --------- |
 | user    | 유저 등록                | POST   | api/user                   | 바로가기 | JWT Token |
-| user    | 유저 삭제                | DEELTE | api/user:id                | 바로가기 | JWT Token |
+| user    | 유저 삭제                | DELETE | api/user:id                | 바로가기 | JWT Token |
 | user    | 특정 유저 조회           | GET    | api/user:id                | 바로가기 | None      |
 | user    | 전체 유저 조회           | GET    | api/user                   | 바로가기 | JWT Token |
 | friend  | 유저 친구 등록           | POST   | api/friend                 | 바로가기 | JWT Token |
 | friend  | 유저의 친구 조회         | GET    | api/friend:id              | 바로가기 | None      |
 | profile | 유저가 푼 문제 조회      | GET    | api/profile/solved:id      | 바로가기 | None      |
+| profile | 유저가 푼 문제 동기화    | Update | api/profile/solved:id      | 바로가기 | None      |
 | profile | 유저가 푼 문제 개수 조회 | GET    | api/profile/solvednum:id   | 바로가기 | None      |
 | profile | 추천 문제 조회           | GET    | api/profile/recommendps:id | 바로가기 | None      |
 | notify  | 슬랙 메시지 전송 요청    | POST   | api/notify/slack           | 바로가기 | Jwt Token |
 | auth    | 로그인                   | POST   | api/auth/login             | 바로가기 | None      |
 | auth    | 로그아웃                 | GET    | api/auth/logout            | 바로가기 | JWT Token |
+| auth    | 회원가입                 | POST   | api/auth/register          | 바로가기 | None      |
+| auth    | 로그인 확인              | GET    | api/auth/check             | 바로가기 | None      |

-const express = require("express");
-const morgan = require("morgan");
+const Koa = require("koa");
+const Router = require("koa-router");
+const bodyParser = require("koa-bodyparser");
 const mongoose = require("mongoose");
-const app = express();
+const jwtMiddleware = require("./src/lib/jwtMiddleware");
+const api = require("./src/api");
+
 require("dotenv").config();
+
+const app = new Koa();
+const router = new Router();
+
+app.use(bodyParser());
+app.use(jwtMiddleware);
+
 const { SERVER_PORT, MONGO_URL } = process.env;
-app.use(
-  morgan("[:date[iso]] :method :status :url :response-time(ms) :user-agent")
-);
-app.use(express.json());
-app.use(express.urlencoded({ extended: false }));
-app.use("/api", require("./api"));
+
+router.use("/api", api.routes());
+app.use(router.routes()).use(router.allowedMethods());
 
 mongoose
-  .connect(MONGO_URL, { useNewUrlParser: true, useFindAndModify: false })
+  .connect(MONGO_URL, {
+    useNewUrlParser: true,
+    useFindAndModify: false,
+    useUnifiedTopology: true,
+  })
   .then(() => {
     console.log("Connected to MongoDB");
   })
   .catch((e) => {
     console.log(e);
   });
+
 app.listen(SERVER_PORT, () => {
   console.log("Server is running on port", process.env.SERVER_PORT);
 });

@@ -4,15 +4,27 @@
   "main": "index.js",
   "license": "MIT",
   "dependencies": {
+    "axios": "^0.19.2",
+    "bcrypt": "^4.0.1",
+    "body-parser": "^1.19.0",
+    "cheerio": "^1.0.0-rc.3",
+    "cookie-parser": "^1.4.5",
     "dotenv": "^8.2.0",
     "eslint-config-prettier": "^6.11.0",
-    "express": "^4.17.1",
     "fs": "^0.0.1-security",
+    "iconv": "^3.0.0",
+    "joi": "^14.3.1",
+    "jsonwebtoken": "^8.5.1",
+    "koa": "^2.12.0",
+    "koa-bodyparser": "^4.3.0",
+    "koa-router": "^9.0.1",
     "mongoose": "^5.9.17",
     "morgan": "^1.10.0",
-    "path": "^0.12.7"
+    "path": "^0.12.7",
+    "voca": "^1.4.0"
   },
   "devDependencies": {
+    "babel-eslint": "^10.1.0",
     "eslint": "^7.1.0",
     "nodemon": "^2.0.4"
   },

+const Joi = require("joi");
+const User = require("../../models/user");
+/*
+POST /api/auth/register
+{
+    username: 'userid'
+    password: 'userpassword'
+}
+*/
+exports.register = async (ctx) => {
+  const schema = Joi.object().keys({
+    username: Joi.string().alphanum().min(3).max(20).required(),
+    password: Joi.string().required(),
+  });
+
+  const result = Joi.validate(ctx.request.body, schema);
+  if (result.error) {
+    ctx.status = 400;
+    ctx.body = result.error;
+    return;
+  }
+
+  const { username, password } = ctx.request.body;
+  try {
+    const isNameExist = await User.findByUsername(username);
+    if (isNameExist) {
+      ctx.status = 409;
+      return;
+    }
+    const user = new User({
+      username,
+    });
+    await user.setPassword(password);
+    await user.save();
+    ctx.body = user.serialize();
+
+    const token = user.generateToken();
+    ctx.cookies.set("acces_token", token, {
+      //3일동안 유효
+      maxAge: 1000 * 60 * 60 * 24 * 3,
+      httpOnly: true,
+    });
+  } catch (e) {
+    ctx.throw(500, e);
+  }
+};
+/*
+POST /api/auth/login
+{
+    username: 'userid'
+    password: 'userpassword'
+}
+ */
+exports.login = async (ctx) => {
+  const { username, password } = ctx.request.body;
+  if (!username || !password) {
+    ctx.status = 401;
+    return;
+  }
+  try {
+    const user = await User.findByUsername(username);
+    if (!user) {
+      ctx.status = 401;
+      return;
+    }
+    const isPasswordValid = await user.checkPassword(password);
+    if (!isPasswordValid) {
+      ctx.status = 401;
+      return;
+    }
+    ctx.body = user.serialize();
+    const token = user.generateToken();
+    ctx.cookies.set("acces_token", token, {
+      //7일동안 유효
+      maxAge: 1000 * 60 * 60 * 24 * 7,
+      httpOnly: true,
+    });
+  } catch (e) {
+    ctx.throw(500, e);
+  }
+};
+/*
+GET api/auth/check
+*/
+exports.check = async (ctx) => {
+  const { user } = ctx.state;
+  if (!user) {
+    ctx.status = 401;
+    return;
+  }
+  ctx.body = user;
+};
+/*
+POST /api/auth/logout
+*/
+exports.logout = async (ctx) => {
+  ctx.cookies.set("access_token");
+  ctx.status = 204;
+};

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

+const Router = require("koa-router");
+const friend = new Router();
+
+friend.post("/");
+friend.delete("/:id");
+friend.get("/:id");
+friend.get("");
+
+module.exports = friend;

+const Router = require("koa-router");
+const api = new Router();
+
+const auth = require("./auth");
+const friend = require("./friend");
+const notify = require("./profile");
+const user = require("./user");
+const profile = require("./profile");
+
+api.use("/auth", auth.routes());
+api.use("/friend", friend.routes());
+api.use("/notify", notify.routes());
+api.use("/user", user.routes());
+api.use("/profile", profile.routes());
+
+module.exports = api;

+const Router = require("koa-router");
+const notify = new Router();
+
+notify.post("/slack");
+
+module.exports = notify;

+const Router = require("koa-router");
+const profile = new Router();
+
+profile.post("/solved:id");
+profile.get("/solvednum:id");
+profile.get("recommendps:id");
+
+module.exports = profile;

+const Router = require("koa-router");
+const user = new Router();
+user.post("/");
+user.delete("/:id");
+user.get("/:id");
+user.get("");
+
+module.exports = user;

+const jwt = require("jsonwebtoken");
+const User = require("../models/user");
+const jwtMiddleware = async (ctx, next) => {
+  const token = ctx.cookies.get("access_token");
+  if (!token) {
+    //토큰이 없을 때
+    return next();
+  }
+  try {
+    const decoded = jwt.verify(token, process.env.JWT_TOKEN);
+    ctx.state.user = {
+      _id: decoded._id,
+      username: decoded.username,
+    };
+    //토큰의 남은 유효 기간이 2일 이하라면 재발급
+    if (decoded.exp - Date.now() / 1000 < 60 * 60 * 24 * 2) {
+      const user = await User.findById(decoded._id);
+      const token = user.generateToken();
+      ctx.cookies.set("access_token", token, {
+        maxAge: 1000 * 60 * 60 * 24 * 7,
+        httpOnly: true,
+      });
+    }
+    return next();
+  } catch (e) {
+    return next();
+  }
+};
+
+module.exports = jwtMiddleware;

+const mongoose = require("mongoose");
+const bcrypt = require("bcrypt");
+const jwt = require("jsonwebtoken");
+
+const Schema = mongoose.Schema;
+
+const UserSchema = new Schema({
+  username: String,
+  hashedPassword: String,
+});
+
+UserSchema.methods.setPassword = async function (password) {
+  const hash = await bcrypt.hash(password, 10);
+  this.hashedPassword = hash;
+};
+UserSchema.methods.checkPassword = async function (password) {
+  const result = await bcrypt.compare(password, this.hashedPassword);
+  return result;
+};
+UserSchema.statics.findByUsername = function (username) {
+  return this.findOne({ username });
+};
+UserSchema.methods.serialize = function () {
+  const data = this.toJSON();
+  delete data.hashedPassword;
+  return data;
+};
+UserSchema.methods.generateToken = function () {
+  const token = jwt.sign(
+    {
+      _id: this.id,
+      username: this.username,
+    },
+    process.env.JWT_SECRET,
+    {
+      expiresIn: "7d",
+    }
+  );
+  return token;
+};
+const User = mongoose.model("User", UserSchema);
+module.exports = User;

+exports.StringToDate_BJ = function (date_str) {
+  let arr_date = date_str.split(" "); //yyyy m dd tt MM SS Fomat LIST
+  let arr_date_r = arr_date.map(function (str) {
+    let str_r = str.slice(0, -1);
+
+    return str_r.length == 1 ? "0" + str_r : str_r;
+  });
+
+  return arr_date_r[0] + arr_date_r[1] + arr_date_r[2]; //YYYYMMDD 형식으로 반환
+};

+const axios = require("axios");
+const cheerio = require("cheerio");
+const StringToDate = require("./StringToDate");
+/*
+ToDO
+- 유저 네임 검증
+- 예외 처리
+*/
+exports.getBJ = async function (userid) {
+  let data_list = [];
+  let next_page_link = "";
+
+  await getStartPage(userid).then((html) => {
+    //시작 페이지를 가져온다.
+    //같은 객체를 두번 선언한다. 퍼포먼스에 문제 생길수도
+    //함수에 객체를 넘기는 방법도 있다.
+    //첫 페이지 가져온다.
+    data_list.push(getData(html));
+    next_page_link = getNextPageLink(html);
+  });
+  while (next_page_link != -1) {
+    //다음 페이지를 가져온다.
+    await getNextPage(next_page_link).then((html) => {
+      data_list.push(getData(html));
+      next_page_link = getNextPageLink(html);
+    });
+  }
+  return data_list.flat(1);
+};
+
+const getStartPage = async (userid) => {
+  //유저 아이디 입력
+  try {
+    return await axios.get(
+      "https://www.acmicpc.net/status?user_id=" + userid + "&result_id=4"
+    );
+  } catch (error) {
+    console.log(error);
+  }
+};
+
+const getNextPage = async (link) => {
+  //링크 입력
+  try {
+    return await axios.get(link);
+  } catch (error) {
+    console.log(error);
+  }
+};
+
+const getData = (html) => {
+  //페이지 데이터 파싱
+  let psArr = [];
+  const $ = cheerio.load(html.data);
+  const $bodyList = $("#status-table > tbody");
+  $bodyList.children().each((index, element) => {
+    psArr.push({
+      problem_number: $(element).find("a.problem_title").text(),
+      problem_title: $(element).find("a.problem_title").attr("title"),
+      solved_date: StringToDate.StringToDate_BJ(
+        $(element).find("a.real-time-update").attr("title")
+      ),
+    });
+  });
+  return psArr;
+};
+const getNextPageLink = (html) => {
+  //다음 페이지가 있으면 다음 페이지 주소 return, 없으면 -1 return
+  const $ = cheerio.load(html.data);
+  return $("#next_page").attr("href")
+    ? "https://www.acmicpc.net/" + $("#next_page").attr("href")
+    : -1;
+};