From e4481ea22b911d9818750e74ad30c7983d1a34dc Mon Sep 17 00:00:00 2001
From: Lorenzo Gil <lgs@yaco.es>
Date: Mon, 31 Oct 2011 11:18:44 +0100
Subject: [PATCH] Allow to get the HTML of the pad with the API

---
 node/db/API.js             | 85 ++++++++++++++++++++++++++++++++++++++
 node/handler/APIHandler.js |  1 +
 node/utils/ExportHtml.js   |  2 +
 3 files changed, 88 insertions(+)

diff --git a/node/db/API.js b/node/db/API.js
index 9912b098..2069ce68 100644
--- a/node/db/API.js
+++ b/node/db/API.js
@@ -25,6 +25,7 @@ var groupManager = require("./GroupManager");
 var authorManager = require("./AuthorManager");
 var sessionManager = require("./SessionManager");
 var async = require("async");
+var exportHtml = require("../utils/ExportHtml");
 
 /**********************/
 /**GROUP FUNCTIONS*****/
@@ -169,6 +170,90 @@ exports.setText = function(padID, text, callback)
   });
 }
 
+/**
+getHTML(padID, [rev]) returns the html of a pad 
+
+Example returns:
+
+{code: 0, message:"ok", data: {text:"Welcome <strong>Text</strong>"}}
+{code: 1, message:"padID does not exist", data: null}
+*/
+exports.getHTML = function(padID, rev, callback)
+{
+  if(typeof rev == "function")
+  {
+    callback = rev;
+    rev = undefined; 
+  }
+
+  if (rev !== undefined && typeof rev != "number")
+  {
+    if (!isNaN(parseInt(rev)))
+    {
+      rev = parseInt(rev);
+    }
+    else
+    {
+      callback({stop: "rev is not a number"});
+      return;
+    }
+  }
+
+  if(rev !== undefined && rev < 0)
+  {
+     callback({stop: "rev is a negative number"});
+     return;
+  }
+
+  if(rev !== undefined && !is_int(rev))
+  {
+    callback({stop: "rev is a float value"});
+    return;
+  }
+
+  getPadSafe(padID, true, function(err, pad)
+  {
+    if(err)
+    {
+      callback(err);
+      return;
+    }
+    
+    //the client asked for a special revision
+    if(rev !== undefined)
+    {
+      //check if this is a valid revision
+      if(rev > pad.getHeadRevisionNumber())
+      {
+        callback({stop: "rev is higher than the head revision of the pad"});
+        return;
+      }
+     
+      //get the html of this revision 
+      exportHtml.getPadHTML(pad, rev, function(err, html)
+      {
+          if(!err)
+          {
+            data = {html: html};
+          }
+          callback(err, data);
+      });
+    }
+    //the client wants the latest text, lets return it to him
+    else
+    {
+      exportHtml.getPadHTML(pad, undefined, function (err, html)
+      {
+        if(!err)
+        {
+          data = {html: html};
+        }
+        callback(err, data);
+      });
+    }
+  });
+}
+
 /*****************/
 /**PAD FUNCTIONS */
 /*****************/
diff --git a/node/handler/APIHandler.js b/node/handler/APIHandler.js
index 34d63f18..57eeeb73 100644
--- a/node/handler/APIHandler.js
+++ b/node/handler/APIHandler.js
@@ -50,6 +50,7 @@ var functions = {
   "listSessionsOfAuthor"      : ["authorID"], 
   "getText"                   : ["padID", "rev"],
   "setText"                   : ["padID", "text"],
+  "getHTML"                   : ["padID", "rev"],
   "getRevisionsCount"         : ["padID"], 
   "deletePad"                 : ["padID"], 
   "getReadOnlyID"             : ["padID"],
diff --git a/node/utils/ExportHtml.js b/node/utils/ExportHtml.js
index dce156ec..354757e1 100644
--- a/node/utils/ExportHtml.js
+++ b/node/utils/ExportHtml.js
@@ -85,6 +85,8 @@ function getPadHTML(pad, revNum, callback)
   });
 }
 
+exports.getPadHTML = getPadHTML;
+
 function getHTMLFromAtext(pad, atext)
 {
   var apool = pad.apool();