import {
  AsyncTestCompleter,
  describe,
  it,
  iit,
  ddescribe,
  expect,
  inject,
  beforeEach,
  SpyObject
} from 'angular2/testing_internal';

import {Promise, PromiseWrapper} from 'angular2/src/core/facade/async';
import {Type} from 'angular2/src/core/facade/lang';

import {RouteRegistry} from 'angular2/src/router/route_registry';
import {
  RouteConfig,
  Route,
  Redirect,
  AuxRoute,
  AsyncRoute
} from 'angular2/src/router/route_config_decorator';
import {stringifyInstruction} from 'angular2/src/router/instruction';
import {IS_DART} from '../platform';

export function main() {
  describe('RouteRegistry', () => {
    var registry;

    beforeEach(() => { registry = new RouteRegistry(); });

    it('should match the full URL', inject([AsyncTestCompleter], (async) => {
         registry.config(RootHostCmp, new Route({path: '/', component: DummyCmpA}));
         registry.config(RootHostCmp, new Route({path: '/test', component: DummyCmpB}));

         registry.recognize('/test', RootHostCmp)
             .then((instruction) => {
               expect(instruction.component.componentType).toBe(DummyCmpB);
               async.done();
             });
       }));

    it('should generate URLs starting at the given component', () => {
      registry.config(RootHostCmp,
                      new Route({path: '/first/...', component: DummyParentCmp, name: 'FirstCmp'}));

      expect(stringifyInstruction(registry.generate(['FirstCmp', 'SecondCmp'], RootHostCmp)))
          .toEqual('first/second');
      expect(stringifyInstruction(registry.generate(['SecondCmp'], DummyParentCmp)))
          .toEqual('second');
    });

    it('should generate URLs that account for redirects', () => {
      registry.config(
          RootHostCmp,
          new Route({path: '/first/...', component: DummyParentRedirectCmp, name: 'FirstCmp'}));

      expect(stringifyInstruction(registry.generate(['FirstCmp'], RootHostCmp)))
          .toEqual('first/second');
    });

    it('should generate URLs in a hierarchy of redirects', () => {
      registry.config(
          RootHostCmp,
          new Route({path: '/first/...', component: DummyMultipleRedirectCmp, name: 'FirstCmp'}));

      expect(stringifyInstruction(registry.generate(['FirstCmp'], RootHostCmp)))
          .toEqual('first/second/third');
    });

    it('should generate URLs with params', () => {
      registry.config(
          RootHostCmp,
          new Route({path: '/first/:param/...', component: DummyParentParamCmp, name: 'FirstCmp'}));

      var url = stringifyInstruction(registry.generate(
          ['FirstCmp', {param: 'one'}, 'SecondCmp', {param: 'two'}], RootHostCmp));
      expect(url).toEqual('first/one/second/two');
    });

    it('should generate params as an empty StringMap when no params are given', () => {
      registry.config(RootHostCmp, new Route({path: '/test', component: DummyCmpA, name: 'Test'}));
      var instruction = registry.generate(['Test'], RootHostCmp);
      expect(instruction.component.params).toEqual({});
    });

    it('should generate URLs of loaded components after they are loaded',
       inject([AsyncTestCompleter], (async) => {
         registry.config(
             RootHostCmp,
             new AsyncRoute({path: '/first/...', loader: AsyncParentLoader, name: 'FirstCmp'}));

         expect(() => registry.generate(['FirstCmp', 'SecondCmp'], RootHostCmp))
             .toThrowError('Could not find route named "SecondCmp".');

         registry.recognize('/first/second', RootHostCmp)
             .then((_) => {
               expect(
                   stringifyInstruction(registry.generate(['FirstCmp', 'SecondCmp'], RootHostCmp)))
                   .toEqual('first/second');
               async.done();
             });
       }));


    it('should throw when generating a url and a parent has no config', () => {
      expect(() => registry.generate(['FirstCmp', 'SecondCmp'], RootHostCmp))
          .toThrowError('Component "RootHostCmp" has no route config.');
    });

    it('should prefer static segments to dynamic', inject([AsyncTestCompleter], (async) => {
         registry.config(RootHostCmp, new Route({path: '/:site', component: DummyCmpB}));
         registry.config(RootHostCmp, new Route({path: '/home', component: DummyCmpA}));

         registry.recognize('/home', RootHostCmp)
             .then((instruction) => {
               expect(instruction.component.componentType).toBe(DummyCmpA);
               async.done();
             });
       }));

    it('should prefer dynamic segments to star', inject([AsyncTestCompleter], (async) => {
         registry.config(RootHostCmp, new Route({path: '/:site', component: DummyCmpA}));
         registry.config(RootHostCmp, new Route({path: '/*site', component: DummyCmpB}));

         registry.recognize('/home', RootHostCmp)
             .then((instruction) => {
               expect(instruction.component.componentType).toBe(DummyCmpA);
               async.done();
             });
       }));

    it('should prefer routes with more dynamic segments', inject([AsyncTestCompleter], (async) => {
         registry.config(RootHostCmp, new Route({path: '/:first/*rest', component: DummyCmpA}));
         registry.config(RootHostCmp, new Route({path: '/*all', component: DummyCmpB}));

         registry.recognize('/some/path', RootHostCmp)
             .then((instruction) => {
               expect(instruction.component.componentType).toBe(DummyCmpA);
               async.done();
             });
       }));

    it('should prefer routes with more static segments', inject([AsyncTestCompleter], (async) => {
         registry.config(RootHostCmp, new Route({path: '/first/:second', component: DummyCmpA}));
         registry.config(RootHostCmp, new Route({path: '/:first/:second', component: DummyCmpB}));

         registry.recognize('/first/second', RootHostCmp)
             .then((instruction) => {
               expect(instruction.component.componentType).toBe(DummyCmpA);
               async.done();
             });
       }));

    it('should prefer routes with static segments before dynamic segments',
       inject([AsyncTestCompleter], (async) => {
         registry.config(RootHostCmp,
                         new Route({path: '/first/second/:third', component: DummyCmpB}));
         registry.config(RootHostCmp,
                         new Route({path: '/first/:second/third', component: DummyCmpA}));

         registry.recognize('/first/second/third', RootHostCmp)
             .then((instruction) => {
               expect(instruction.component.componentType).toBe(DummyCmpB);
               async.done();
             });
       }));

    it('should match the full URL using child components', inject([AsyncTestCompleter], (async) => {
         registry.config(RootHostCmp, new Route({path: '/first/...', component: DummyParentCmp}));

         registry.recognize('/first/second', RootHostCmp)
             .then((instruction) => {
               expect(instruction.component.componentType).toBe(DummyParentCmp);
               expect(instruction.child.component.componentType).toBe(DummyCmpB);
               async.done();
             });
       }));

    it('should match the URL using async child components',
       inject([AsyncTestCompleter], (async) => {
         registry.config(RootHostCmp, new Route({path: '/first/...', component: DummyAsyncCmp}));

         registry.recognize('/first/second', RootHostCmp)
             .then((instruction) => {
               expect(instruction.component.componentType).toBe(DummyAsyncCmp);
               expect(instruction.child.component.componentType).toBe(DummyCmpB);
               async.done();
             });
       }));

    it('should match the URL using an async parent component',
       inject([AsyncTestCompleter], (async) => {
         registry.config(RootHostCmp,
                         new AsyncRoute({path: '/first/...', loader: AsyncParentLoader}));

         registry.recognize('/first/second', RootHostCmp)
             .then((instruction) => {
               expect(instruction.component.componentType).toBe(DummyParentCmp);
               expect(instruction.child.component.componentType).toBe(DummyCmpB);
               async.done();
             });
       }));

    it('should throw when a parent config is missing the `...` suffix any of its children add routes',
       () => {
         expect(() =>
                    registry.config(RootHostCmp, new Route({path: '/', component: DummyParentCmp})))
             .toThrowError(
                 'Child routes are not allowed for "/". Use "..." on the parent\'s route path.');
       });

    it('should throw when a parent config uses `...` suffix before the end of the route', () => {
      expect(() => registry.config(RootHostCmp,
                                   new Route({path: '/home/.../fun/', component: DummyParentCmp})))
          .toThrowError('Unexpected "..." before the end of the path for "home/.../fun/".');
    });


    it('should throw if a config has a component that is not defined', () => {
      expect(() => registry.config(RootHostCmp, new Route({path: '/', component: null})))
          .toThrowError('Component for route "/" is not defined, or is not a class.');
      expect(() => registry.config(RootHostCmp, new AuxRoute({path: '/', component: null})))
          .toThrowError('Component for route "/" is not defined, or is not a class.');

      // This would never happen in Dart
      if (!IS_DART) {
        expect(() => registry.config(RootHostCmp, new Route({path: '/', component:<Type>(<any>4)})))
            .toThrowError('Component for route "/" is not defined, or is not a class.');
      }
    });

    it('should throw when linkParams are not terminal', () => {
      registry.config(RootHostCmp,
                      new Route({path: '/first/...', component: DummyParentCmp, name: 'First'}));
      expect(() => { registry.generate(['First'], RootHostCmp); })
          .toThrowError('Link "["First"]" does not resolve to a terminal or async instruction.');
    });

    it('should match matrix params on child components and query params on the root component',
       inject([AsyncTestCompleter], (async) => {
         registry.config(RootHostCmp, new Route({path: '/first/...', component: DummyParentCmp}));

         registry.recognize('/first/second;filter=odd?comments=all', RootHostCmp)
             .then((instruction) => {
               expect(instruction.component.componentType).toBe(DummyParentCmp);
               expect(instruction.component.params).toEqual({'comments': 'all'});

               expect(instruction.child.component.componentType).toBe(DummyCmpB);
               expect(instruction.child.component.params).toEqual({'filter': 'odd'});
               async.done();
             });
       }));

    it('should generate URLs with matrix and query params', () => {
      registry.config(
          RootHostCmp,
          new Route({path: '/first/:param/...', component: DummyParentParamCmp, name: 'FirstCmp'}));

      var url = stringifyInstruction(registry.generate(
          [
            'FirstCmp',
            {param: 'one', query: 'cats'},
            'SecondCmp',
            {
              param: 'two',
              sort: 'asc',
            }
          ],
          RootHostCmp));
      expect(url).toEqual('first/one/second/two;sort=asc?query=cats');
    });

  });
}

function AsyncParentLoader() {
  return PromiseWrapper.resolve(DummyParentCmp);
}

function AsyncChildLoader() {
  return PromiseWrapper.resolve(DummyCmpB);
}

class RootHostCmp {}

@RouteConfig([new AsyncRoute({path: '/second', loader: AsyncChildLoader})])
class DummyAsyncCmp {
}

class DummyCmpA {}
class DummyCmpB {}

@RouteConfig([
  new Redirect({path: '/', redirectTo: '/third'}),
  new Route({path: '/third', component: DummyCmpB, name: 'ThirdCmp'})
])
class DummyRedirectCmp {
}


@RouteConfig([
  new Redirect({path: '/', redirectTo: '/second'}),
  new Route({path: '/second/...', component: DummyRedirectCmp, name: 'SecondCmp'})
])
class DummyMultipleRedirectCmp {
}

@RouteConfig([
  new Redirect({path: '/', redirectTo: '/second'}),
  new Route({path: '/second', component: DummyCmpB, name: 'SecondCmp'})
])
class DummyParentRedirectCmp {
}

@RouteConfig([new Route({path: '/second', component: DummyCmpB, name: 'SecondCmp'})])
class DummyParentCmp {
}


@RouteConfig([new Route({path: '/second/:param', component: DummyCmpB, name: 'SecondCmp'})])
class DummyParentParamCmp {
}