From 36a1900ce3496f2d71ae4c41609dc52d24636be2 Mon Sep 17 00:00:00 2001
From: Wu Cheng-Han <jacky_cute0808@hotmail.com>
Date: Mon, 10 Oct 2016 20:55:33 +0800
Subject: [PATCH] Update to make note history count in server-side when user
 logged

---
 lib/models/note.js   | 59 +++++++++++++++++++++++++++++++++++++++++---
 lib/realtime.js      | 14 +++++++++++
 public/js/history.js | 28 ++++++++++++++++++++-
 3 files changed, 97 insertions(+), 4 deletions(-)

diff --git a/lib/models/note.js b/lib/models/note.js
index 3478538..08ef083 100644
--- a/lib/models/note.js
+++ b/lib/models/note.js
@@ -218,8 +218,7 @@ module.exports = function (sequelize, DataTypes) {
                     return callback(null, null);
                 });
             },
-            parseNoteTitle: function (body) {
-                var title = "";
+            parseNoteInfo: function (body) {
                 var meta = null;
                 try {
                     var obj = metaMarked(body);
@@ -229,10 +228,30 @@ module.exports = function (sequelize, DataTypes) {
                     //na
                 }
                 if (!meta) meta = {};
+                var $ = cheerio.load(md.render(body));
+                return {
+                    title: Note.extractNoteTitle(meta, $),
+                    tags: Note.extractNoteTags(meta, $)
+                };
+            },
+            parseNoteTitle: function (body) {
+                var meta = null;
+                try {
+                    var obj = metaMarked(body);
+                    body = obj.markdown;
+                    meta = obj.meta;
+                } catch (err) {
+                    //na
+                }
+                if (!meta) meta = {};
+                var $ = cheerio.load(md.render(body));
+                return Note.extractNoteTitle(meta, $);
+            },
+            extractNoteTitle: function (meta, $) {
+                var title = "";
                 if (meta.title && (typeof meta.title == "string" || typeof meta.title == "number")) {
                     title = meta.title;
                 } else {
-                    var $ = cheerio.load(md.render(body));
                     var h1s = $("h1");
                     if (h1s.length > 0 && h1s.first().text().split('\n').length == 1)
                         title = S(h1s.first().text()).stripTags().s;
@@ -250,6 +269,40 @@ module.exports = function (sequelize, DataTypes) {
                 title = !title || title == "Untitled" ? "HackMD - Collaborative markdown notes" : title + " - HackMD";
                 return title;
             },
+            extractNoteTags: function (meta, $) {
+                var tags = [];
+                var rawtags = [];
+                if (meta.tags && (typeof meta.tags == "string" || typeof meta.tags == "number")) {
+                    var metaTags = ('' + meta.tags).split(',');
+                    for (var i = 0; i < metaTags.length; i++) {
+                        var text = metaTags[i].trim();
+                        if (text) rawtags.push(text);
+                    }
+                } else {
+                    var h6s = $("h6");
+                    h6s.each(function (key, value) {
+                        if (/^tags/gmi.test($(value).text())) {
+                            var codes = $(value).find("code");
+                            for (var i = 0; i < codes.length; i++) {
+                                var text = $(codes[i]).html().trim();
+                                if (text) rawtags.push(text);
+                            }
+                        }
+                    });
+                }
+                for (var i = 0; i < rawtags.length; i++) {
+                    var found = false;
+                    for (var j = 0; j < tags.length; j++) {
+                        if (tags[j] == rawtags[i]) {
+                            found = true;
+                            break;
+                        }
+                    }
+                    if (!found)
+                        tags.push(rawtags[i]);
+                }
+                return tags;
+            },
             parseMeta: function (meta) {
                 var _meta = {};
                 if (meta) {
diff --git a/lib/realtime.js b/lib/realtime.js
index c9c6543..a05c1f4 100644
--- a/lib/realtime.js
+++ b/lib/realtime.js
@@ -13,6 +13,7 @@ var moment = require('moment');
 //core
 var config = require("./config.js");
 var logger = require("./logger.js");
+var history = require("./history.js");
 var models = require("./models");
 
 //ot
@@ -390,6 +391,12 @@ function finishConnection(socket, note, user) {
     note.server.setName(socket, user.name);
     note.server.setColor(socket, user.color);
 
+    // update user note history
+    setTimeout(function () {
+        var noteId = note.alias ? note.alias : LZString.compressToBase64(note.id);
+        history.updateHistory(user.userid, noteId, note.server.document);
+    }, 0);
+
     emitOnlineUsers(socket);
     emitRefresh(socket);
 
@@ -468,6 +475,7 @@ function startConnection(socket) {
 
             notes[noteId] = {
                 id: noteId,
+                alias: note.alias,
                 owner: owner,
                 ownerprofile: ownerprofile,
                 permission: note.permission,
@@ -652,6 +660,12 @@ function operationCallback(socket, operation) {
                 return logger.error('operation callback failed: ' + err);
             });
         }
+        // update user note history
+        setTimeout(function() {
+            var noteId = note.alias ? note.alias : LZString.compressToBase64(note.id);
+            history.updateHistory(userId, noteId, note.server.document);
+        }, 0);
+        
     }
     // save authorship
     note.authorship = models.Note.updateAuthorshipByOperation(operation, userId, note.authorship);
diff --git a/public/js/history.js b/public/js/history.js
index f9ce226..9be6810 100644
--- a/public/js/history.js
+++ b/public/js/history.js
@@ -139,7 +139,8 @@ function removeHistory(id, notehistory) {
 function writeHistory(view) {
     checkIfAuth(
         function () {
-            writeHistoryToServer(view);
+            // no need to do this anymore, this will count from server-side
+            // writeHistoryToServer(view);
         },
         function () {
             writeHistoryToStorage(view);
@@ -365,4 +366,29 @@ function parseToHistory(list, notehistory, callback) {
         }
     }
     callback(list, notehistory);
+}
+
+function postHistoryToServer(noteId, data, callback) {
+    $.post(serverurl + '/history/' + noteId, data)
+    .done(function (result) {
+        return callback(null, result);
+    })
+    .fail(function (xhr, status, error) {
+        console.error(xhr.responseText);
+        return callback(error, null);
+    });
+}
+
+function deleteServerHistory(noteId, callback) {
+    $.ajax({
+        url: serverurl + '/history' + (noteId ? '/' + noteId : ""),
+        type: 'DELETE'
+    })
+    .done(function (result) {
+        return callback(null, result);
+    })
+    .fail(function (xhr, status, error) {
+        console.error(xhr.responseText);
+        return callback(error, null);
+    });
 }
\ No newline at end of file