From 013266b3f7c04f90789fe7afa5b64f13cf29001d Mon Sep 17 00:00:00 2001
From: Enrico Fasoli <fazius2009@gmail.com>
Date: Sat, 12 Dec 2015 12:51:09 +0100
Subject: [PATCH] implemented comments to dinamyc structures, closes #53

---
 lib/boards-api.js | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

diff --git a/lib/boards-api.js b/lib/boards-api.js
index 9bf59e0..b940c27 100644
--- a/lib/boards-api.js
+++ b/lib/boards-api.js
@@ -384,37 +384,50 @@ BoardsAPI.prototype.getUserPostListInBoard = function(user,board,done){
   return this.ee
 }
 
-BoardsAPI.prototype.downloadComment = function(hash,adminID,board,done){
+BoardsAPI.prototype.downloadComment = function(hash,adminID,board,target){
   this.ipfs.cat(hash,(err2,r) => {
     if(err2){
       this.ee.emit('error',err2)
       console.log('Could not download comment',hash,'of',board+'@'+adminID)
-      if(done && done.apply) done(err2)
     } else {
       // TODO: add JSON parsing error handling
       var cmnt = JSON.parse(r.toString())
       cmnt.hash = hash
       this.ee.emit(hash,cmnt,adminID,board)
-      this.ee.emit('comment for '+cmnt.parent,cmnt)
-      if(done && done.apply) done(null,cmnt)
+      this.ee.emit('comment for '+(target || cmnt.parent),cmnt)
     }
   })
   return this.ee
 }
 
-BoardsAPI.prototype.getCommentsFor = function(parent,board,adminID){
+BoardsAPI.prototype.getCommentsFor = function(parent,board,adminID,target){
   if(!parent || !board || !adminID){
     return console.log('malformed arguments:',parent,board,adminID)
   }
-  this.ee.on('approved comments for '+board+'@'+adminID,ret => {
-    ret.forEach(item => this.downloadComment(item.hash,adminID,board))
+  // figure out if there's a previous version of the item
+  this.ipfs.cat(parent, (err,res) => {
+    if(err){
+      this.ee.emit('error',err)
+    } else {
+      replyAsObj(res,true,(err2,obj) => {
+        if(err2){
+          this.ee.emit('error',err2)
+        } else if(typeof obj.previous == 'string'){
+          this.getCommentsFor(obj.previous,board,adminID,parent)
+        }
+      })
+    }
   })
   // get the admin's comments
   this.getUserCommentList(parent,adminID,(err,res) => {
     if(!err){
-      res.forEach(item => this.downloadComment(item.hash,adminID,board))
+      res.forEach(item => this.downloadComment(item.hash,adminID,board,target))
     }
   })
+  // Handle approved comments
+  this.ee.on('approved comments for '+board+'@'+adminID,ret => {
+    ret.forEach(item => this.downloadComment(item.hash,adminID,board,target))
+  })
   this.getAllowedContentProducers(adminID,board,{ comments: true })
 }