Added comments to news items

src/modules/api/api.ts

@@ -1332,7 +1332,9 @@ function GetApp(): ModuleType {
             news[newsKey].reacts = { [react]: [user.id] }
           } else {
             if (Array.isArray(news[newsKey].reacts[react])) {
-              news[newsKey].reacts[react].push(user.id)
+              if (!news[newsKey].reacts[react].includes(user.id)) {
+                news[newsKey].reacts[react].push(user.id)
+              }
             } else {
               news[newsKey].reacts[react] = [user.id]
             }
@@ -1350,6 +1352,103 @@ function GetApp(): ModuleType {
     res.json({ msg: 'done' })
   })
 
+  function addComment(obj, path, comment) {
+    if (path.length === 0) {
+      obj.push(comment)
+    } else {
+      const i = path.pop()
+      if (!obj[i].subComments) {
+        obj[i].subComments = []
+      }
+      addComment(obj[i].subComments, path, comment)
+    }
+  }
+
+  function deleteComment(obj, path) {
+    if (path.length === 1) {
+      obj.splice(path[0], 1)
+    } else {
+      const i = path.pop()
+      deleteComment(obj[i].subComments, path)
+    }
+  }
+
+  function addReactionToComment(obj, path, { reaction, isDelete, uid }) {
+    if (path.length === 1) {
+      const index = path[0]
+      if (!obj[index].reacts) {
+        obj[index].reacts = {}
+      }
+      if (isDelete) {
+        if (obj[index].reacts[reaction]) {
+          obj[index].reacts[reaction] = obj[index].reacts[reaction].filter(
+            (uid) => {
+              return uid !== uid
+            }
+          )
+          if (obj[index].reacts[reaction].length === 0) {
+            delete obj[index].reacts[reaction]
+          }
+        }
+      } else {
+        if (!obj[index].reacts[reaction]) {
+          obj[index].reacts[reaction] = [uid]
+        } else {
+          if (!obj[index].reacts[reaction].includes(uid)) {
+            obj[index].reacts[reaction].push(uid)
+          }
+        }
+      }
+    } else {
+      const i = path.pop()
+      addReactionToComment(obj[i].subComments, path, {
+        reaction: reaction,
+        isDelete: isDelete,
+        uid: uid,
+      })
+    }
+  }
+
+  app.post('/comment', (req: Request, res) => {
+    logger.LogReq(req)
+
+    const user: User = req.session.user
+    const news: any = utils.ReadJSON(newsFile)
+    const { type, path, newsKey } = req.body
+    if (!type || !path || !newsKey) {
+      res.json({ status: 'fail', msg: ' type or path or newsKey is undefined' })
+    }
+
+
+    if (type === 'add') {
+      const { text } = req.body
+      const comment = {
+        date: new Date().toLocaleString(),
+        user: user.id,
+        text: text,
+      }
+      if (!news[newsKey].comments) {
+        news[newsKey].comments = []
+      }
+      addComment(news[newsKey].comments, path, comment)
+    } else if (type === 'delete') {
+      if (news[newsKey].comments) {
+        deleteComment(news[newsKey].comments, path)
+      }
+    } else if (type === 'reaction') {
+      const { reaction, isDelete } = req.body
+      addReactionToComment(news[newsKey].comments, path, {
+        reaction: reaction,
+        isDelete: isDelete,
+        uid: user.id,
+      })
+    } else {
+      res.json({ status: 'fail', msg: 'no such type' })
+    }
+    utils.WriteFile(JSON.stringify(news, null, 2), newsFile)
+    res.json({ status: 'ok', newNews: news })
+  })
+
   app.post('/registerscript', function(req: Request, res) {
     logger.LogReq(req)