add navigator.auth api

navigator.auth.js

@@ -0,0 +1,96 @@
+(function () {
+'use strict';
+
+function create(myOpts) {
+  return {
+    requestScope: function (opts) {
+      // TODO pre-generate URL
+
+      // deliver existing session if it exists
+      var scope = opts && opts.scope || [];
+      if (myOpts.session) {
+        if (!scope.length || scope.every(function (scp) {
+          return -1 !== opts.myOpts.session.scope.indexOf(scp);
+        })) {
+          return OAUTH3.PromiseA.resolve(myOpts.session);
+        }
+      }
+
+      // request a new session otherwise
+      return OAUTH3.implicitGrant(myOpts.directives, {
+        client_id: myOpts.conf.client_uri
+      , client_uri: myOpts.conf.client_uri
+        // maybe use inline instead?
+      , windowType: 'popup'
+      , scope: scope
+      }).then(function (session) {
+        return session;
+      });
+    }
+  , session: function () {
+      return myOpts.session;
+    }
+  , refresh: function (session) {
+      return OAUTH3.implicitGrant(myOpts.directives, {
+        client_id: myOpts.conf.client_uri
+      , client_uri: myOpts.conf.client_uri
+      , windowType: 'background'
+      }).then(function (_session) {
+        session = _session;
+        return session;
+      });
+    }
+  , deauthorize: function () {
+      return OAUTH3.logout(myOpts.conf.provider_uri, {
+        client_id: myOpts.conf.client_uri
+      , client_uri: myOpts.conf.client_uri
+      });
+    }
+  , switchUser: function () {
+      // should open dialog with user selection dialog
+    }
+  }
+}
+
+window.navigator.auth = {
+  getUserAuthenticator: function (opts) {
+    var conf = {};
+    var directives;
+    var session;
+
+    opts = opts || {};
+    conf.client_uri = opts.client_uri || OAUTH3.clientUri(opts.location || window.location);
+
+    return OAUTH3.issuer({ broker: opts.issuer_uri || 'https://new.oauth3.org' }).then(function (issuer) {
+      conf.issuer_uri = issuer;
+      conf.provider_uri = issuer;
+
+      return OAUTH3.directives(conf.provider_uri, {
+        client_id: conf.client_uri
+      , client_uri: conf.client_uri
+      }).then(function (_directives) {
+        directives = _directives;
+        var myOpts = {
+          directives: directives
+        , conf: conf
+        };
+
+        return OAUTH3.implicitGrant(directives, {
+          client_id: conf.client_uri
+        , client_uri: conf.client_uri
+        , windowType: 'background'
+        }).then(function (_session) {
+          session = _session;
+          myOpts.session = session;
+          return create(myOpts);
+        }, function (err) {
+          console.error('[DEBUG] implicitGrant err:');
+          console.error(err);
+          return create(myOpts);
+        });
+      });
+    });
+  }
+};
+
+}());