[Add] comment

 /* eslint-disable no-console */
 import routes from "../routes";
 import Video from "../models/Video";
+import Comment from "../models/Comment";
 
 // db를 import 해주고 home에 async를 달아준다. async는 기다려주는 역할을 한다.
 // javascript가 db를 다 못보고 그냥 지나갈 수도 있기 때문이다.
@@ -62,7 +63,9 @@ export const videoDetail = async (req, res) => {
     params: { id },
   } = req;
   try {
-    const video = await Video.findById(id).populate("creator");
+    const video = await Video.findById(id)
+      .populate("creator")
+      .populate("comments");
     res.render("videoDetail", { pageTitle: video.title, video });
   } catch (error) {
     res.redirect(routes.home);
@@ -136,3 +139,25 @@ export const postRegisterView = async (req, res) => {
     res.end();
   }
 };
+
+// 댓글 부분
+export const postAddComment = async (req, res) => {
+  const {
+    params: { id }, // URL에서 가져옴
+    body: { comment },
+    user,
+  } = req;
+  try {
+    const video = await Video.findById(id);
+    const newComment = await Comment.create({
+      text: comment,
+      creator: user.id,
+    });
+    video.comments.push(newComment.id);
+    video.save();
+  } catch (error) {
+    res.status(400);
+  } finally {
+    res.end();
+  }
+};

 import express from "express";
 import routes from "../routes";
-import { postRegisterView } from "../controllers/videoController";
+import {
+  postRegisterView,
+  postAddComment,
+} from "../controllers/videoController";
 
 const apiRouter = express.Router();
 
 apiRouter.post(routes.registerView, postRegisterView);
-
+apiRouter.post(routes.addComment, postAddComment);
 export default apiRouter;

@@ -31,6 +31,9 @@ const FB_CALLBACK = "/auth/facebook/callback";
 const API = "/api";
 const REGISTER_VIEW = "/:id/view";
 
+// Comment
+const ADD_COMMENT = "/:id/comment";
+
 const routes = {
   home: HOME,
   join: JOIN,
@@ -78,6 +81,7 @@ const routes = {
 
   api: API,
   registerView: REGISTER_VIEW,
+  addComment: ADD_COMMENT,
 };
 // template에서 직접 접근이 필요한 경우 함수로 바꿔준다.
 export default routes;

@@ -24,3 +24,8 @@ block content
                 span.video__comment-number 1 comment
             else
                 span.video__comment-number #{video.comments.length} comments
+            form.add__comment#jsAddComment
+                input(type="text", placeholder="Add a comment", name="comment")
+            ul.video__comments-list
+                each comment in video.comments
+                    span comment.text
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