/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import {APP_BASE_HREF, LocationStrategy, PathLocationStrategy, PlatformLocation} from '@angular/common';
import {Injector, provide} from '@angular/core';
import {beforeEach, beforeEachProviders, ddescribe, describe, expect, iit, inject, it} from '@angular/core/testing/testing_internal';

import {SpyPlatformLocation} from '../spies';

export function main() {
  describe('PathLocationStrategy', () => {
    var platformLocation: any /** TODO #9100 */, locationStrategy: any /** TODO #9100 */;

    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: any /** TODO #9100 */, ls: any /** TODO #9100 */) => {
            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: any /** TODO #9100 */, ls: any /** TODO #9100 */) => {
            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: any /** TODO #9100 */, ls: any /** TODO #9100 */) => {
            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: any /** TODO #9100 */, ls: any /** TODO #9100 */) => {
            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;
}