feat. authorization logic implemented

 //회원가입, 로그인 및 로그아웃에 관한 api
 const User = require('../../models/user');
 const Joi = require('joi');
-const jwt = require('jsonwebtoken');
 
 exports.register = async(ctx) => {
-    ctx.body = 'register'
+    const { userId, password, passwordCheck } = ctx.request.body;
+
+    const schema = Joi.object.keys({
+        userId : Joi.string().min(8).max(15).required(),
+        password : Joi.string().required(),
+        passwordCheck : Joi.string().required(),
+    })
+    
+    const result = schema.validate(ctx.request.body);
+    if(result.error || password !== passwordCheck) {
+        ctx.status = 400;
+        return;
+    }
+
+    const existUser = await User.findByUserId(userId);
+    if(existUser) {
+        ctx.status = 409;
+        return;
+    }
+
+    const user = new User({
+        userId
+    });
+
+    await user.setPassword(password);
+    await user.save();
+
+    ctx.status = 200;
+
 };
 
 exports.login = async(ctx) => {
-    ctx.body = 'login'
+    const { userId, password } = ctx.request.body;
+
+    const schema = Joi.object.keys({
+        userId : Joi.string().min(8).max(15).required(),
+        password : Joi.string().required()
+    })
+
+    const result = schema.validate(ctx.request.body);
+    if(result.error) {
+        ctx.status = 400;
+        return;
+    }
+
+    const user = await User.findByUserId(userId);
+    if(!user) {
+        ctx.stauts = 401;
+        return;
+    }
+
+    const isPasswordTrue = await user.checkPassword(password);
+    if(!isPasswordTrue) {
+        ctx.status = 401;
+        return;
+    }
+
+    const token = await user.generateToken();
+    ctx.cookies.set('access_token', token, {
+        httpOnly : true,
+        maxAge : 1000 * 60 * 60 * 24 * 30
+    });
+
+    ctx.status = 201;
+    ctx.body = user;
+
 };
 
 exports.logout = async(ctx) => {
-    ctx.body = 'logout'
+    ctx.cookies.set('access_token', null, {
+        httpOnly : true,
+        maxAge : 0
+    });
+    ctx.status = 204;
+    ctx.body = null;
 };
\ No newline at end of file