Index: lams_tool_doku/conf/etherpad-lite/src/node/db/AuthorManager.js
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diff -u
--- lams_tool_doku/conf/etherpad-lite/src/node/db/AuthorManager.js	(revision 0)
+++ lams_tool_doku/conf/etherpad-lite/src/node/db/AuthorManager.js	(revision cde046a71e913eedd14d02d3d6c36a1339fb5729)
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+/**
+ * The AuthorManager controlls all information about the Pad authors
+ */
+
+/*
+ * 2011 Peter 'Pita' Martischka (Primary Technology Ltd)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS-IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+var ERR = require("async-stacktrace");
+var db = require("./DB").db;
+var customError = require("../utils/customError");
+var randomString = require('ep_etherpad-lite/static/js/pad_utils').randomString;
+
+exports.getColorPalette = function(){
+  //*LAMS* modified the following array: replaced dark colors with the more lighter ones
+  return ["#ffc7c7", "#fff1c7", "#e3ffc7", "#c7ffd5", "#c7ffff", "#c7d5ff", "#e3c7ff", "#ffc7f1", "#ff8f8f", "#ffe38f", "#c7ff8f", "#8fffab", "#8fffff", "#8fabff", "#c78fff", "#ff8fe3", "#ecbcbc", "#d9c179", "#a9d979", "#79d991", "#79d9d9", "#bcc8ec", "#dcc9ef", "#efc9e6", "#d9a9a9", "#d9cda9", "#c1d9a9", "#a9d9b5", "#a9d9d9", "#a9b5d9", "#c1a9d9", "#d9a9cd", "#c9e1d9", "#12d1ad", "#d5e8e5", "#d5daed", "#a091c7", "#c1dae5", "#e0d0f0", "#e6e76d", "#e3bfd0", "#f386e5", "#4ecc0c", "#c0c236", "#d2c1bd", "#b5de6a", "#9b88fd", "#c2dde1", "#c8d3c0", "#e267fe", "#f1c0cc", "#babad0", "#cde3c2", "#f7d2f1", "#86dc6c", "#b5a714", "#dfcdd2", "#ebd4e6", "#4b81c8", "#c4d2cd", "#c6c9b9", "#d16084", "#efe1ce", "#8c8bd8"];
+};
+
+/**
+ * Checks if the author exists
+ */
+exports.doesAuthorExists = function (authorID, callback)
+{
+  //check if the database entry of this author exists
+  db.get("globalAuthor:" + authorID, function (err, author)
+  {
+    if(ERR(err, callback)) return;
+    callback(null, author != null);
+  });
+}
+
+/**
+ * Returns the AuthorID for a token. 
+ * @param {String} token The token 
+ * @param {Function} callback callback (err, author) 
+ */
+exports.getAuthor4Token = function (token, callback)
+{
+  mapAuthorWithDBKey("token2author", token, function(err, author)
+  {
+    if(ERR(err, callback)) return;
+    //return only the sub value authorID
+    callback(null, author ? author.authorID : author);
+  });
+}
+
+/**
+ * Returns the AuthorID for a mapper. 
+ * @param {String} token The mapper
+ * @param {String} name The name of the author (optional)
+ * @param {Function} callback callback (err, author) 
+ */
+exports.createAuthorIfNotExistsFor = function (authorMapper, name, callback)
+{
+  mapAuthorWithDBKey("mapper2author", authorMapper, function(err, author)
+  {
+    if(ERR(err, callback)) return;
+    
+    //set the name of this author
+    if(name)
+      exports.setAuthorName(author.authorID, name);
+      
+    //return the authorID
+    callback(null, author);
+  });
+}
+
+/**
+ * Returns the AuthorID for a mapper. We can map using a mapperkey,
+ * so far this is token2author and mapper2author
+ * @param {String} mapperkey The database key name for this mapper 
+ * @param {String} mapper The mapper
+ * @param {Function} callback callback (err, author) 
+ */
+function mapAuthorWithDBKey (mapperkey, mapper, callback)
+{  
+  //try to map to an author
+  db.get(mapperkey + ":" + mapper, function (err, author)
+  {
+    if(ERR(err, callback)) return;
+  
+    //there is no author with this mapper, so create one
+    if(author == null)
+    {
+      exports.createAuthor(null, function(err, author)
+      {
+        if(ERR(err, callback)) return;
+        
+        //create the token2author relation
+        db.set(mapperkey + ":" + mapper, author.authorID);
+        
+        //return the author
+        callback(null, author);
+      });
+    }
+    //there is a author with this mapper
+    else
+    {
+      //update the timestamp of this author
+      db.setSub("globalAuthor:" + author, ["timestamp"], new Date().getTime());
+      
+      //return the author
+      callback(null, {authorID: author});
+    }
+  });
+}
+
+/**
+ * Internal function that creates the database entry for an author 
+ * @param {String} name The name of the author 
+ */
+exports.createAuthor = function(name, callback)
+{
+  //create the new author name
+  var author = "a." + randomString(16);
+        
+  //create the globalAuthors db entry
+  var authorObj = {"colorId" : Math.floor(Math.random()*(exports.getColorPalette().length)), "name": name, "timestamp": new Date().getTime()};
+        
+  //set the global author db entry
+  db.set("globalAuthor:" + author, authorObj);
+  
+  callback(null, {authorID: author});
+}
+
+/**
+ * Returns the Author Obj of the author
+ * @param {String} author The id of the author
+ * @param {Function} callback callback(err, authorObj)
+ */
+exports.getAuthor = function (author, callback)
+{
+  db.get("globalAuthor:" + author, callback);
+}
+
+
+
+/**
+ * Returns the color Id of the author
+ * @param {String} author The id of the author
+ * @param {Function} callback callback(err, colorId)
+ */
+exports.getAuthorColorId = function (author, callback)
+{
+  db.getSub("globalAuthor:" + author, ["colorId"], callback);
+}
+
+/**
+ * Sets the color Id of the author
+ * @param {String} author The id of the author
+ * @param {String} colorId The color id of the author
+ * @param {Function} callback (optional)
+ */
+exports.setAuthorColorId = function (author, colorId, callback)
+{
+  db.setSub("globalAuthor:" + author, ["colorId"], colorId, callback);
+}
+
+/**
+ * Returns the name of the author
+ * @param {String} author The id of the author
+ * @param {Function} callback callback(err, name)
+ */
+exports.getAuthorName = function (author, callback)
+{
+  db.getSub("globalAuthor:" + author, ["name"], callback);
+}
+
+/**
+ * Sets the name of the author
+ * @param {String} author The id of the author
+ * @param {String} name The name of the author
+ * @param {Function} callback (optional)
+ */
+exports.setAuthorName = function (author, name, callback)
+{
+  db.setSub("globalAuthor:" + author, ["name"], name, callback);
+}
+
+/**
+ * Returns an array of all pads this author contributed to
+ * @param {String} author The id of the author
+ * @param {Function} callback (optional)
+ */
+exports.listPadsOfAuthor = function (authorID, callback)
+{
+  /* There are two other places where this array is manipulated:
+   * (1) When the author is added to a pad, the author object is also updated
+   * (2) When a pad is deleted, each author of that pad is also updated
+   */
+  //get the globalAuthor
+  db.get("globalAuthor:" + authorID, function(err, author)
+  {
+    if(ERR(err, callback)) return;
+
+    //author does not exists
+    if(author == null)
+    {
+      callback(new customError("authorID does not exist","apierror"))
+    }
+    //everything is fine, return the pad IDs
+    else
+    {     
+      var pads = [];
+      if(author.padIDs != null)
+      {
+        for (var padId in author.padIDs)
+        {
+          pads.push(padId);
+        }
+      }
+      callback(null, {padIDs: pads});
+    }
+  });
+}
+
+/**
+ * Adds a new pad to the list of contributions
+ * @param {String} author The id of the author
+ * @param {String} padID The id of the pad the author contributes to
+ */
+exports.addPad = function (authorID, padID)
+{
+  //get the entry
+  db.get("globalAuthor:" + authorID, function(err, author)
+  {
+    if(ERR(err)) return;
+    if(author == null) return;
+    
+    //the entry doesn't exist so far, let's create it
+    if(author.padIDs == null)
+    {
+      author.padIDs = {};
+    }
+      
+    //add the entry for this pad
+    author.padIDs[padID] = 1;// anything, because value is not used
+      
+    //save the new element back
+    db.set("globalAuthor:" + authorID, author);
+  });
+}
+
+/**
+ * Removes a pad from the list of contributions
+ * @param {String} author The id of the author
+ * @param {String} padID The id of the pad the author contributes to
+ */
+exports.removePad = function (authorID, padID)
+{
+  db.get("globalAuthor:" + authorID, function (err, author)
+  {
+    if(ERR(err)) return;
+    if(author == null) return;
+    
+    if(author.padIDs != null)
+    {
+      //remove pad from author
+      delete author.padIDs[padID];   
+      db.set("globalAuthor:" + authorID, author);
+    }
+  });
+}