import {
  describe,
  it,
  iit,
  ddescribe,
  expect,
  inject,
  beforeEach,
  beforeEachProviders,
} from '@angular/core/testing/testing_internal';

import {Injector, provide} from '@angular/core';
import {
  PlatformLocation,
  LocationStrategy,
  PathLocationStrategy,
  APP_BASE_HREF
} from '@angular/common';
import {SpyPlatformLocation} from '../spies';

export function main() {
  describe('PathLocationStrategy', () => {
    var platformLocation, locationStrategy;

    beforeEachProviders(() => [
      PathLocationStrategy,
      provide(PlatformLocation, {useFactory: makeSpyPlatformLocation})
    ]);

    it('should throw without a base element or APP_BASE_HREF', () => {
      platformLocation = new SpyPlatformLocation();
      platformLocation.pathname = '';
      platformLocation.spy('getBaseHrefFromDOM').andReturn(null);

      expect(() => new PathLocationStrategy(platformLocation))
          .toThrowError(
              'No base href set. Please provide a value for the APP_BASE_HREF token or add a base element to the document.');
    });

    describe('without APP_BASE_HREF', () => {
      beforeEach(inject([PlatformLocation, PathLocationStrategy], (pl, ls) => {
        platformLocation = pl;
        locationStrategy = ls;
      }));

      it('should prepend urls with a hash for non-empty URLs', () => {
        expect(locationStrategy.prepareExternalUrl('foo')).toEqual('foo');

        locationStrategy.pushState(null, 'Title', 'foo', '');
        expect(platformLocation.spy('pushState')).toHaveBeenCalledWith(null, 'Title', 'foo');
      });

      it('should prepend urls with a hash for URLs with query params', () => {
        expect(locationStrategy.prepareExternalUrl('foo?bar')).toEqual('foo?bar');

        locationStrategy.pushState(null, 'Title', 'foo', 'bar=baz');
        expect(platformLocation.spy('pushState'))
            .toHaveBeenCalledWith(null, 'Title', 'foo?bar=baz');
      });

      it('should not prepend a hash to external urls for an empty internal URL', () => {
        expect(locationStrategy.prepareExternalUrl('')).toEqual('');

        locationStrategy.pushState(null, 'Title', '', '');
        expect(platformLocation.spy('pushState')).toHaveBeenCalledWith(null, 'Title', '');
      });
    });

    describe('with APP_BASE_HREF with neither leading nor trailing slash', () => {
      beforeEachProviders(() => [provide(APP_BASE_HREF, {useValue: 'app'})]);

      beforeEach(inject([PlatformLocation, PathLocationStrategy], (pl, ls) => {
        platformLocation = pl;
        locationStrategy = ls;
        platformLocation.spy('pushState');
        platformLocation.pathname = '';
      }));

      it('should prepend urls with a hash for non-empty URLs', () => {
        expect(locationStrategy.prepareExternalUrl('foo')).toEqual('app/foo');

        locationStrategy.pushState(null, 'Title', 'foo', '');
        expect(platformLocation.spy('pushState')).toHaveBeenCalledWith(null, 'Title', 'app/foo');
      });

      it('should prepend urls with a hash for URLs with query params', () => {
        expect(locationStrategy.prepareExternalUrl('foo?bar')).toEqual('app/foo?bar');

        locationStrategy.pushState(null, 'Title', 'foo', 'bar=baz');
        expect(platformLocation.spy('pushState'))
            .toHaveBeenCalledWith(null, 'Title', 'app/foo?bar=baz');
      });

      it('should not prepend a hash to external urls for an empty internal URL', () => {
        expect(locationStrategy.prepareExternalUrl('')).toEqual('app');

        locationStrategy.pushState(null, 'Title', '', '');
        expect(platformLocation.spy('pushState')).toHaveBeenCalledWith(null, 'Title', 'app');
      });
    });

    describe('with APP_BASE_HREF with leading slash', () => {
      beforeEachProviders(() => [provide(APP_BASE_HREF, {useValue: '/app'})]);

      beforeEach(inject([PlatformLocation, PathLocationStrategy], (pl, ls) => {
        platformLocation = pl;
        locationStrategy = ls;
        platformLocation.spy('pushState');
        platformLocation.pathname = '';
      }));

      it('should prepend urls with a hash for non-empty URLs', () => {
        expect(locationStrategy.prepareExternalUrl('foo')).toEqual('/app/foo');

        locationStrategy.pushState(null, 'Title', 'foo', '');
        expect(platformLocation.spy('pushState')).toHaveBeenCalledWith(null, 'Title', '/app/foo');
      });

      it('should prepend urls with a hash for URLs with query params', () => {
        expect(locationStrategy.prepareExternalUrl('foo?bar')).toEqual('/app/foo?bar');

        locationStrategy.pushState(null, 'Title', 'foo', 'bar=baz');
        expect(platformLocation.spy('pushState'))
            .toHaveBeenCalledWith(null, 'Title', '/app/foo?bar=baz');
      });

      it('should not prepend a hash to external urls for an empty internal URL', () => {
        expect(locationStrategy.prepareExternalUrl('')).toEqual('/app');

        locationStrategy.pushState(null, 'Title', '', '');
        expect(platformLocation.spy('pushState')).toHaveBeenCalledWith(null, 'Title', '/app');
      });
    });

    describe('with APP_BASE_HREF with both leading and trailing slash', () => {
      beforeEachProviders(() => [provide(APP_BASE_HREF, {useValue: '/app/'})]);

      beforeEach(inject([PlatformLocation, PathLocationStrategy], (pl, ls) => {
        platformLocation = pl;
        locationStrategy = ls;
        platformLocation.spy('pushState');
        platformLocation.pathname = '';
      }));

      it('should prepend urls with a hash for non-empty URLs', () => {
        expect(locationStrategy.prepareExternalUrl('foo')).toEqual('/app/foo');

        locationStrategy.pushState(null, 'Title', 'foo', '');
        expect(platformLocation.spy('pushState')).toHaveBeenCalledWith(null, 'Title', '/app/foo');
      });

      it('should prepend urls with a hash for URLs with query params', () => {
        expect(locationStrategy.prepareExternalUrl('foo?bar')).toEqual('/app/foo?bar');

        locationStrategy.pushState(null, 'Title', 'foo', 'bar=baz');
        expect(platformLocation.spy('pushState'))
            .toHaveBeenCalledWith(null, 'Title', '/app/foo?bar=baz');
      });

      it('should not prepend a hash to external urls for an empty internal URL', () => {
        expect(locationStrategy.prepareExternalUrl('')).toEqual('/app/');

        locationStrategy.pushState(null, 'Title', '', '');
        expect(platformLocation.spy('pushState')).toHaveBeenCalledWith(null, 'Title', '/app/');
      });
    });
  });
}

function makeSpyPlatformLocation() {
  var platformLocation = new SpyPlatformLocation();
  platformLocation.spy('getBaseHrefFromDOM').andReturn('');
  platformLocation.spy('pushState');
  platformLocation.pathname = '';
  return platformLocation;
}