import {
  AsyncTestCompleter,
  describe,
  proxy,
  it,
  iit,
  ddescribe,
  expect,
  inject,
  beforeEach,
  beforeEachBindings,
  SpyObject
} from 'angular2/test_lib';
import {IMPLEMENTS} from 'angular2/src/facade/lang';

import {Promise, PromiseWrapper} from 'angular2/src/facade/async';
import {ListWrapper} from 'angular2/src/facade/collection';
import {Router, RootRouter} from 'angular2/src/router/router';
import {Pipeline} from 'angular2/src/router/pipeline';
import {RouterOutlet} from 'angular2/src/router/router_outlet';
import {SpyLocation} from 'angular2/src/mock/location_mock';
import {Location} from 'angular2/src/router/location';

import {RouteRegistry} from 'angular2/src/router/route_registry';
import {RouteConfig} from 'angular2/src/router/route_config_decorator';
import {DirectiveResolver} from 'angular2/src/core/compiler/directive_resolver';

import {bind} from 'angular2/di';

export function main() {
  describe('Router', () => {
    var router, location;

    beforeEachBindings(() => [
      Pipeline,
      RouteRegistry,
      DirectiveResolver,
      bind(Location).toClass(SpyLocation),
      bind(Router)
          .toFactory((registry, pipeline,
                      location) => { return new RootRouter(registry, pipeline, location, AppCmp); },
                     [RouteRegistry, Pipeline, Location])
    ]);


    beforeEach(inject([Router, Location], (rtr, loc) => {
      router = rtr;
      location = loc;
    }));


    it('should navigate based on the initial URL state', inject([AsyncTestCompleter], (async) => {
         var outlet = makeDummyOutlet();

         router.config({'path': '/', 'component': DummyComponent})
             .then((_) => router.registerOutlet(outlet))
             .then((_) => {
               expect(outlet.spy('activate')).toHaveBeenCalled();
               expect(location.urlChanges).toEqual([]);
               async.done();
             });
       }));


    it('should activate viewports and update URL on navigate',
       inject([AsyncTestCompleter], (async) => {
         var outlet = makeDummyOutlet();

         router.registerOutlet(outlet)
             .then((_) => router.config({'path': '/a', 'component': DummyComponent}))
             .then((_) => router.navigate('/a'))
             .then((_) => {
               expect(outlet.spy('activate')).toHaveBeenCalled();
               expect(location.urlChanges).toEqual(['/a']);
               async.done();
             });
       }));


    it('should navigate after being configured', inject([AsyncTestCompleter], (async) => {
         var outlet = makeDummyOutlet();

         router.registerOutlet(outlet)
             .then((_) => router.navigate('/a'))
             .then((_) => {
               expect(outlet.spy('activate')).not.toHaveBeenCalled();
               return router.config({'path': '/a', 'component': DummyComponent});
             })
             .then((_) => {
               expect(outlet.spy('activate')).toHaveBeenCalled();
               async.done();
             });
       }));


    it('should throw when linkParams does not start with a "/" or "./"', () => {
      expect(() => router.generate(['firstCmp', 'secondCmp']))
          .toThrowError(
              `Link "${ListWrapper.toJSON(['firstCmp', 'secondCmp'])}" must start with "/", "./", or "../"`);
    });


    it('should throw when linkParams does not include a route name', () => {
      expect(() => router.generate(['./']))
          .toThrowError(`Link "${ListWrapper.toJSON(['./'])}" must include a route name.`);
      expect(() => router.generate(['/']))
          .toThrowError(`Link "${ListWrapper.toJSON(['/'])}" must include a route name.`);
    });


    it('should generate URLs from the root component when the path starts with /', () => {
      router.config({'path': '/first/...', 'component': DummyParentComp, 'as': 'firstCmp'});

      expect(router.generate(['/firstCmp', 'secondCmp'])).toEqual('/first/second');
      expect(router.generate(['/firstCmp', 'secondCmp'])).toEqual('/first/second');
      expect(router.generate(['/firstCmp/secondCmp'])).toEqual('/first/second');
    });
  });
}

@proxy
@IMPLEMENTS(RouterOutlet)
class DummyOutlet extends SpyObject {
  noSuchMethod(m) { return super.noSuchMethod(m) }
}

class DummyComponent {}

@RouteConfig([{'path': '/second', 'component': DummyComponent, 'as': 'secondCmp'}])
class DummyParentComp {
}

function makeDummyOutlet() {
  var ref = new DummyOutlet();
  ref.spy('activate').andCallFake((_) => PromiseWrapper.resolve(true));
  ref.spy('canActivate').andCallFake((_) => PromiseWrapper.resolve(true));
  ref.spy('canDeactivate').andCallFake((_) => PromiseWrapper.resolve(true));
  ref.spy('deactivate').andCallFake((_) => PromiseWrapper.resolve(true));
  return ref;
}

class AppCmp {}