1 files changed, 92 insertions, 0 deletions
diff --git a/lib/caldav/request/abstract.js b/lib/caldav/request/abstract.js
new file mode 100644
index 0000000..04d2128
--- /dev/null
+++ b/lib/caldav/request/abstract.js
@@ -0,0 +1,92 @@
+(function(module, ns) {
+
+  var SAX = ns.require('sax');
+  var XHR = ns.require('xhr');
+
+
+  /**
+   * Creates an (Web/Cal)Dav request.
+   *
+   * @param {String} url location of resource.
+   * @param {Object} options additional options for request.
+   */
+  function Abstract(url, options) {
+    if (typeof(options) === 'undefined') {
+      options = {};
+    }
+
+    var key;
+    var xhrOptions = {};
+
+    if (typeof(url) === 'undefined' || !url) {
+      throw new Error('request requires a url');
+    }
+
+    xhrOptions.url = url;
+
+    if ('password' in options) {
+      xhrOptions.password = options.password;
+      delete options.password;
+    }
+
+    if ('user' in options) {
+      xhrOptions.user = options.user;
+      delete options.user;
+    }
+
+    this.sax = new SAX();
+
+    for (key in options) {
+      if (options.hasOwnProperty(key)) {
+        this[key] = options[key];
+      }
+    }
+
+    this.xhr = new XHR(xhrOptions);
+  }
+
+  Abstract.prototype = {
+
+    _createPayload: function() {
+      return '';
+    },
+
+    _processResult: function(req, callback) {
+      callback.call(this, null, this.sax.root, req);
+    },
+
+    /**
+     * Sends request to server.
+     *
+     * @param {Function} callback node style callback.
+     *                            Receives three arguments
+     *                            error, parsedData, xhr.
+     */
+    send: function(callback) {
+      var self = this;
+      var req = this.xhr;
+      req.data = this._createPayload();
+
+      // in the future we may stream data somehow
+      req.send(function xhrResult() {
+        var xhr = req.xhr;
+        if (xhr.status > 199 && xhr.status < 300) {
+          // success
+          self.sax.write(xhr.responseText).close();
+          self._processResult(req, callback);
+        } else {
+          // fail
+          callback(new Error('http error code: ' + xhr.status));
+        }
+      });
+    }
+  };
+
+  module.exports = Abstract;
+
+}.apply(
+  this,
+  (this.Caldav) ?
+    [Caldav('request/abstract'), Caldav] :
+    [module, require('../caldav')]
+));