Add support of saving authorship to revision

Author: jackycute

lib/models/revision.js

@@ -100,6 +100,7 @@ module.exports = function (sequelize, DataTypes) {
                         var startContent = null;
                         var lastPatch = [];
                         var applyPatches = [];
+                        var authorship = [];
                         if (count <= Math.round(revisions.length / 2)) {
                             // start from top to target
                             for (var i = 0; i < count; i++) {
@@ -112,6 +113,7 @@ module.exports = function (sequelize, DataTypes) {
                                     applyPatches = applyPatches.concat(patch);
                                 }
                                 lastPatch = revision.patch;
+                                authorship = revision.authorship;
                             }
                             // swap DIFF_INSERT and DIFF_DELETE to achieve unpatching
                             for (var i = 0, l = applyPatches.length; i < l; i++) {
@@ -130,12 +132,14 @@ module.exports = function (sequelize, DataTypes) {
                                 var revision = revisions[i];
                                 if (i == l) {
                                     startContent = LZString.decompressFromBase64(revision.lastContent);
+                                    authorship = revision.authorship;
                                 }
                                 if (revision.patch) {
                                     var patch = dmp.patch_fromText(LZString.decompressFromBase64(revision.patch));
                                     applyPatches = applyPatches.concat(patch);
                                 }
                                 lastPatch = revision.patch;
+                                authorship = revision.authorship;
                             }
                         }
                         try {
@@ -145,7 +149,8 @@ module.exports = function (sequelize, DataTypes) {
                         }
                         var data = {
                             content: finalContent,
-                            patch: dmp.patch_fromText(LZString.decompressFromBase64(lastPatch))
+                            patch: dmp.patch_fromText(LZString.decompressFromBase64(lastPatch)),
+                            authorship: authorship ? JSON.parse(LZString.decompressFromBase64(authorship)) : null
                         };
                         var ms_end = (new Date()).getTime();
                         if (config.debug) {
@@ -218,7 +223,8 @@ module.exports = function (sequelize, DataTypes) {
                         Revision.create({
                             noteId: note.id,
                             lastContent: note.content,
-                            length: LZString.decompressFromBase64(note.content).length
+                            length: LZString.decompressFromBase64(note.content).length,
+                            authorship: note.authorship
                         }).then(function (revision) {
                             Revision.finishSaveNoteRevision(note, revision, callback);
                         }).catch(function (err) {
@@ -244,7 +250,8 @@ module.exports = function (sequelize, DataTypes) {
                                 noteId: note.id,
                                 patch: LZString.compressToBase64(patch),
                                 content: note.content,
-                                length: LZString.decompressFromBase64(note.content).length
+                                length: LZString.decompressFromBase64(note.content).length,
+                                authorship: note.authorship
                             }).then(function (revision) {
                                 // clear last revision content to reduce db size
                                 latestRevision.update({