import {AsyncTestCompleter, beforeEach, beforeEachProviders, ddescribe, describe, expect, iit, flushMicrotasks, inject, it, xdescribe, TestComponentBuilder, xit,} from 'angular2/testing_internal';

import {bootstrap} from 'angular2/platform/browser';
import {Component, Directive} from 'angular2/src/core/metadata';
import {DOM} from 'angular2/src/platform/dom/dom_adapter';
import {Console} from 'angular2/src/core/console';
import {provide, ViewChild, AfterViewInit} from 'angular2/core';
import {DOCUMENT} from 'angular2/src/platform/dom/dom_tokens';
import {RouteConfig, Route, Redirect, AuxRoute} from 'angular2/src/router/route_config/route_config_decorator';
import {PromiseWrapper} from 'angular2/src/facade/async';
import {BaseException, WrappedException} from 'angular2/src/facade/exceptions';
import {ROUTER_PROVIDERS, ROUTER_PRIMARY_COMPONENT, RouteParams, Router, APP_BASE_HREF, ROUTER_DIRECTIVES, LocationStrategy} from 'angular2/router';

import {MockLocationStrategy} from 'angular2/src/mock/mock_location_strategy';
import {ApplicationRef} from 'angular2/src/core/application_ref';
import {MockApplicationRef} from 'angular2/src/mock/mock_application_ref';

class DummyConsole implements Console {
  log(message) {}
}

export function main() {
  describe('router bootstrap', () => {
    beforeEachProviders(
        () =>
            [ROUTER_PROVIDERS, provide(LocationStrategy, {useClass: MockLocationStrategy}),
             provide(ApplicationRef, {useClass: MockApplicationRef})]);

    // do not refactor out the `bootstrap` functionality. We still want to
    // keep this test around so we can ensure that bootstrapping a router works
    it('should bootstrap a simple app', inject([AsyncTestCompleter], (async) => {
         var fakeDoc = DOM.createHtmlDocument();
         var el = DOM.createElement('app-cmp', fakeDoc);
         DOM.appendChild(fakeDoc.body, el);

         bootstrap(AppCmp, [
           ROUTER_PROVIDERS, provide(ROUTER_PRIMARY_COMPONENT, {useValue: AppCmp}),
           provide(LocationStrategy, {useClass: MockLocationStrategy}),
           provide(DOCUMENT, {useValue: fakeDoc}), provide(Console, {useClass: DummyConsole})
         ]).then((applicationRef) => {
           var router = applicationRef.hostComponent.router;
           router.subscribe((_) => {
             expect(el).toHaveText('outer { hello }');
             expect(applicationRef.hostComponent.location.path()).toEqual('');
             async.done();
           });
         });
       }));

    describe('broken app', () => {
      beforeEachProviders(() => [provide(ROUTER_PRIMARY_COMPONENT, {useValue: BrokenAppCmp})]);

      it('should rethrow exceptions from component constructors',
         inject([AsyncTestCompleter, TestComponentBuilder], (async, tcb: TestComponentBuilder) => {
           tcb.createAsync(AppCmp).then((fixture) => {
             var router = fixture.debugElement.componentInstance.router;
             PromiseWrapper.catchError(router.navigateByUrl('/cause-error'), (error) => {
               expect(error).toContainError('oops!');
               async.done();
             });
           });
         }));
    });

    describe('back button app', () => {
      beforeEachProviders(() => [provide(ROUTER_PRIMARY_COMPONENT, {useValue: HierarchyAppCmp})]);

      it('should change the url without pushing a new history state for back navigations',
         inject([AsyncTestCompleter, TestComponentBuilder], (async, tcb: TestComponentBuilder) => {

           tcb.createAsync(HierarchyAppCmp).then((fixture) => {
             var router = fixture.debugElement.componentInstance.router;
             var position = 0;
             var flipped = false;
             var history = [
               ['/parent/child', 'root { parent { hello } }', '/super-parent/child'],
               ['/super-parent/child', 'root { super-parent { hello2 } }', '/parent/child'],
               ['/parent/child', 'root { parent { hello } }', false]
             ];

             router.subscribe((_) => {
               var location = fixture.debugElement.componentInstance.location;
               var element = fixture.debugElement.nativeElement;
               var path = location.path();

               var entry = history[position];

               expect(path).toEqual(entry[0]);
               expect(element).toHaveText(entry[1]);

               var nextUrl = entry[2];
               if (nextUrl == false) {
                 flipped = true;
               }

               if (flipped && position == 0) {
                 async.done();
                 return;
               }

               position = position + (flipped ? -1 : 1);
               if (flipped) {
                 location.back();
               } else {
                 router.navigateByUrl(nextUrl);
               }
             });

             router.navigateByUrl(history[0][0]);
           });
         }), 1000);
    });

    describe('hierarchical app', () => {
      beforeEachProviders(
          () => { return [provide(ROUTER_PRIMARY_COMPONENT, {useValue: HierarchyAppCmp})]; });

      it('should bootstrap an app with a hierarchy',
         inject([AsyncTestCompleter, TestComponentBuilder], (async, tcb: TestComponentBuilder) => {

           tcb.createAsync(HierarchyAppCmp).then((fixture) => {
             var router = fixture.debugElement.componentInstance.router;
             router.subscribe((_) => {
               expect(fixture.debugElement.nativeElement).toHaveText('root { parent { hello } }');
               expect(fixture.debugElement.componentInstance.location.path())
                   .toEqual('/parent/child');
               async.done();
             });
             router.navigateByUrl('/parent/child');
           });
         }));

      // TODO(btford): mock out level lower than LocationStrategy once that level exists
      xdescribe('custom app base ref', () => {
        beforeEachProviders(() => { return [provide(APP_BASE_HREF, {useValue: '/my/app'})]; });
        it('should bootstrap',
           inject(
               [AsyncTestCompleter, TestComponentBuilder], (async, tcb: TestComponentBuilder) => {

                 tcb.createAsync(HierarchyAppCmp).then((fixture) => {
                   var router = fixture.debugElement.componentInstance.router;
                   router.subscribe((_) => {
                     expect(fixture.debugElement.nativeElement)
                         .toHaveText('root { parent { hello } }');
                     expect(fixture.debugElement.componentInstance.location.path())
                         .toEqual('/my/app/parent/child');
                     async.done();
                   });
                   router.navigateByUrl('/parent/child');
                 });
               }));
      });
    });


    describe('querystring params app', () => {
      beforeEachProviders(
          () => { return [provide(ROUTER_PRIMARY_COMPONENT, {useValue: QueryStringAppCmp})]; });

      it('should recognize and return querystring params with the injected RouteParams',
         inject([AsyncTestCompleter, TestComponentBuilder], (async, tcb: TestComponentBuilder) => {
           tcb.createAsync(QueryStringAppCmp).then((fixture) => {
             var router = fixture.debugElement.componentInstance.router;
             router.subscribe((_) => {
               fixture.detectChanges();

               expect(fixture.debugElement.nativeElement)
                   .toHaveText('qParam = search-for-something');
               /*
               expect(applicationRef.hostComponent.location.path())
                   .toEqual('/qs?q=search-for-something');*/
               async.done();
             });
             router.navigateByUrl('/qs?q=search-for-something');
             fixture.detectChanges();
           });
         }));
    });

    describe('retrieving components loaded via outlet via @ViewChild', () => {
      let tcb: TestComponentBuilder = null;

      beforeEachProviders(() => [provide(ROUTER_PRIMARY_COMPONENT, {useValue: AppCmp})]);

      beforeEach(inject(
          [TestComponentBuilder], (testComponentBuilder) => { tcb = testComponentBuilder; }));

      it('should get a reference and pass data to components loaded inside of outlets',
         inject([AsyncTestCompleter], (async) => {
           tcb.createAsync(AppWithViewChildren).then(fixture => {
             let appInstance = fixture.debugElement.componentInstance;
             let router = appInstance.router;

             router.subscribe((_) => {
               fixture.detectChanges();

               expect(appInstance.helloCmp).toBeAnInstanceOf(HelloCmp);
               expect(appInstance.helloCmp.message).toBe('Ahoy');

               async.done();
             });

             // TODO(juliemr): This isn't necessary for the test to pass - figure
             // out what's going on.
             // router.navigateByUrl('/rainbow(pony)');
           });
         }));
    });
  });
}


@Component({selector: 'hello-cmp', template: 'hello'})
class HelloCmp {
  public message: string;
}

@Component({selector: 'hello2-cmp', template: 'hello2'})
class Hello2Cmp {
  public greeting: string;
}

@Component({
  selector: 'app-cmp',
  template: `outer { <router-outlet></router-outlet> }`,
  directives: ROUTER_DIRECTIVES
})
@RouteConfig([new Route({path: '/', component: HelloCmp})])
class AppCmp {
  constructor(public router: Router, public location: LocationStrategy) {}
}

@Component({
  selector: 'app-cmp',
  template: `
    Hello routing!
    <router-outlet></router-outlet>
    <router-outlet name="pony"></router-outlet>`,
  directives: ROUTER_DIRECTIVES
})
@RouteConfig([
  new Route({path: '/rainbow', component: HelloCmp}),
  new AuxRoute({name: 'pony', path: 'pony', component: Hello2Cmp})
])
class AppWithViewChildren implements AfterViewInit {
  @ViewChild(HelloCmp) helloCmp: HelloCmp;
  @ViewChild(Hello2Cmp) hello2Cmp: Hello2Cmp;

  constructor(public router: Router, public location: LocationStrategy) {}

  ngAfterViewInit() { this.helloCmp.message = 'Ahoy'; }
}

@Component({
  selector: 'parent-cmp',
  template: `parent { <router-outlet></router-outlet> }`,
  directives: ROUTER_DIRECTIVES
})
@RouteConfig([new Route({path: '/child', component: HelloCmp})])
class ParentCmp {
}

@Component({
  selector: 'super-parent-cmp',
  template: `super-parent { <router-outlet></router-outlet> }`,
  directives: ROUTER_DIRECTIVES
})
@RouteConfig([new Route({path: '/child', component: Hello2Cmp})])
class SuperParentCmp {
}

@Component({
  selector: 'app-cmp',
  template: `root { <router-outlet></router-outlet> }`,
  directives: ROUTER_DIRECTIVES
})
@RouteConfig([
  new Route({path: '/parent/...', component: ParentCmp}),
  new Route({path: '/super-parent/...', component: SuperParentCmp})
])
class HierarchyAppCmp {
  constructor(public router: Router, public location: LocationStrategy) {}
}

@Component({selector: 'qs-cmp', template: `qParam = {{q}}`})
class QSCmp {
  q: string;
  constructor(params: RouteParams) { this.q = params.get('q'); }
}

@Component({
  selector: 'app-cmp',
  template: `<router-outlet></router-outlet>`,
  directives: ROUTER_DIRECTIVES
})
@RouteConfig([new Route({path: '/qs', component: QSCmp})])
class QueryStringAppCmp {
  constructor(public router: Router, public location: LocationStrategy) {}
}

@Component({selector: 'oops-cmp', template: 'oh no'})
class BrokenCmp {
  constructor() { throw new BaseException('oops!'); }
}

@Component({
  selector: 'app-cmp',
  template: `outer { <router-outlet></router-outlet> }`,
  directives: ROUTER_DIRECTIVES
})
@RouteConfig([new Route({path: '/cause-error', component: BrokenCmp})])
class BrokenAppCmp {
  constructor(public router: Router, public location: LocationStrategy) {}
}