From a434bd864044974452c855fa7a2216eb7c0d8fdc Mon Sep 17 00:00:00 2001
From: javi <qualopec@gmail.com>
Date: Tue, 31 Mar 2015 15:20:35 +0200
Subject: [PATCH] add support for maps_api_template

---
 lib/torque/provider/windshaft.js | 71 ++++++++++++++++++++++----------
 test/provider.windshaft.test.js  |  1 +
 2 files changed, 51 insertions(+), 21 deletions(-)

diff --git a/lib/torque/provider/windshaft.js b/lib/torque/provider/windshaft.js
index 293c5d9..db30e82 100644
--- a/lib/torque/provider/windshaft.js
+++ b/lib/torque/provider/windshaft.js
@@ -16,7 +16,7 @@
     return str;
   }
 
-  var json = function (options) {
+  var windshaft = function (options) {
     this._ready = false;
     this._tileQueue = [];
     this.options = options;
@@ -26,6 +26,13 @@
     this.options.tiler_domain = options.tiler_domain || 'cartodb.com';
     this.options.tiler_port = options.tiler_port || 80;
 
+    // backwards compatible
+    if (!options.maps_api_template) {
+      this._buildMapsApiTemplate(this.options);
+    } else {
+      this.options.maps_api_template =  options.maps_api_template;
+    }
+
     this.options.coordinates_data_type = this.options.coordinates_data_type || Uint8Array;
 
     if (this.options.data_aggregation) {
@@ -40,7 +47,7 @@
     }
   };
 
-  json.prototype = {
+  windshaft.prototype = {
 
     /**
      * return the torque tile encoded in an efficient javascript
@@ -339,31 +346,53 @@
       }
     },
 
-    _tilerHost: function() {
-      var opts = this.options;
-      var user = (opts.user_name || opts.user);
-      return opts.tiler_protocol +
-           "://" + (user ? user + "." : "")  +
+    _buildMapsApiTemplate: function(opts) {
+       var user = opts.user_name || opts.user;
+       opts.maps_api_template = opts.tiler_protocol +
+           "://" + ((user) ? "{user}.":"")  +
            opts.tiler_domain +
            ((opts.tiler_port != "") ? (":" + opts.tiler_port) : "");
     },
 
-    url: function() {
+    _tilerHost: function() {
+      var opts = this.options;
+      var user = opts.user_name || opts.user;
+      return opts.maps_api_template.replace('{user}', opts.user);
+    },
+
+    url: function () {
       var opts = this.options;
-      var protocol = opts.tiler_protocol || 'http';
-      if (!this.options.cdn_url || this.options.no_cdn) {
-        return this._tilerHost();
-      }
-      var h = protocol + "://"
-      if (protocol === 'http') {
-        h += "{s}.";
-      }
       var cdn_host = opts.cdn_url;
-      if(!cdn_host.http && !cdn_host.https) {
-        throw new Error("cdn_host should contain http and/or https entries");
+      var has_empty_cdn = !cdn_host || (cdn_host && (!cdn_host.http && !cdn_host.https));
+
+      if (opts.no_cdn || has_empty_cdn) {
+        return this._tilerHost();
+      } else {
+        var protocol = this.isHttps() ? 'https': 'http';
+        var h = protocol + "://";
+        if (!this.isHttps()) {
+          h += "{s}.";
+        }
+        var cdn_url = cdn_host[protocol];
+        // build default template url if the cdn url is not templatized
+        // this is for backwards compatiblity, ideally we should use the url
+        // that tiler sends to us right away
+        if (!this._isUserTemplateUrl(cdn_url)) {
+          cdn_url = cdn_url  + "/{user}";
+        }
+        var user = opts.user_name || opts.user;
+        h += cdn_url.replace('{user}', user)
+        return h;
       }
-      h += cdn_host[protocol] + "/" + (opts.user_name || opts.user);
-      return h;
+
+    },
+
+    _isUserTemplateUrl: function(t) {
+      return t && t.indexOf('{user}') !== -1;
+    },
+
+    isHttps: function() {
+      return this.options.maps_api_template.indexOf('https') === 0;
     },
 
     _generateCartoCSS: function() {
@@ -451,4 +480,4 @@
 
   };
 
-  module.exports = json;
+  module.exports = windshaft;
diff --git a/test/provider.windshaft.test.js b/test/provider.windshaft.test.js
index 55308d8..11a87a3 100644
--- a/test/provider.windshaft.test.js
+++ b/test/provider.windshaft.test.js
@@ -64,6 +64,7 @@ QUnit.module('provider.windshaft', {
 
   test("url cdn https", function() {
     windshaft.options.tiler_protocol = 'https';
+    windshaft._buildMapsApiTemplate(windshaft.options);
     windshaft.options.cdn_url = { https: 'cartocdn.com' };
     equal(windshaft.url(), "https://cartocdn.com/rambo");
   });