// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System.Linq;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Features;
using Xunit;

namespace Microsoft.AspNetCore.Routing
{
    // Integration tests for GetXyzByRouteValues. These are basic because important behavioral details
    // are covered elsewhere.
    //
    // Does not cover template processing in detail, those scenarios are validated by TemplateBinderTests
    // and DefaultLinkGeneratorProcessTemplateTest
    //
    // Does not cover the RouteValuesAddressScheme in detail. see RouteValuesAddressSchemeTest
    public class LinkGeneratorRouteValuesAddressExtensionsTest : LinkGeneratorTestBase
    {
        [Fact]
        public void GetPathByRouteValues_WithHttpContext_UsesAmbientValues()
        {
            // Arrange
            var endpoint1 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });
            var endpoint2 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id?}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });

            var linkGenerator = CreateLinkGenerator(endpoint1, endpoint2);

            var context = new EndpointSelectorContext()
            {
                RouteValues = new RouteValueDictionary(new { action = "Index", })
            };
            var httpContext = CreateHttpContext();
            httpContext.Features.Set<IRouteValuesFeature>(context);
            httpContext.Request.PathBase = new PathString("/Foo/Bar?encodeme?");

            // Act
            var path = linkGenerator.GetPathByRouteValues(
                httpContext,
                routeName: null,
                values: new RouteValueDictionary(new { controller = "Home", query = "some?query" }),
                fragment: new FragmentString("#Fragment?"),
                options: new LinkOptions() { AppendTrailingSlash = true, });

            // Assert
            Assert.Equal("/Foo/Bar%3Fencodeme%3F/Home/Index/?query=some%3Fquery#Fragment?", path);
        }

        [Fact]
        public void GetPathByRouteValues_WithoutHttpContext_WithPathBaseAndFragment()
        {
            // Arrange
            var endpoint1 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });
            var endpoint2 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id?}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });

            var linkGenerator = CreateLinkGenerator(endpoint1, endpoint2);

            // Act
            var path = linkGenerator.GetPathByRouteValues(
                routeName: null,
                values: new RouteValueDictionary(new { controller = "Home", action = "Index", query = "some?query" }),
                new PathString("/Foo/Bar?encodeme?"),
                new FragmentString("#Fragment?"),
                new LinkOptions() { AppendTrailingSlash = true, });

            // Assert
            Assert.Equal("/Foo/Bar%3Fencodeme%3F/Home/Index/?query=some%3Fquery#Fragment?", path);
        }

        [Fact]
        public void GetPathByRouteValues_WithHttpContext_WithPathBaseAndFragment()
        {
            // Arrange
            var endpoint1 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });
            var endpoint2 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id?}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });

            var linkGenerator = CreateLinkGenerator(endpoint1, endpoint2);

            var httpContext = CreateHttpContext();
            httpContext.Request.PathBase = new PathString("/Foo/Bar?encodeme?");

            // Act
            var path = linkGenerator.GetPathByRouteValues(
                httpContext,
                routeName: null,
                values: new RouteValueDictionary(new { controller = "Home", action = "Index", query = "some?query" }),
                fragment: new FragmentString("#Fragment?"),
                options: new LinkOptions() { AppendTrailingSlash = true, });

            // Assert
            Assert.Equal("/Foo/Bar%3Fencodeme%3F/Home/Index/?query=some%3Fquery#Fragment?", path);
        }

        [Fact]
        public void GetUriByRouteValues_WithoutHttpContext_WithPathBaseAndFragment()
        {
            // Arrange
            var endpoint1 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });
            var endpoint2 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id?}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });

            var linkGenerator = CreateLinkGenerator(endpoint1, endpoint2);

            // Act
            var path = linkGenerator.GetUriByRouteValues(
                routeName: null,
                values: new RouteValueDictionary(new { controller = "Home", action = "Index", query = "some?query" }),
                "http",
                new HostString("example.com"),
                new PathString("/Foo/Bar?encodeme?"),
                new FragmentString("#Fragment?"),
                new LinkOptions() { AppendTrailingSlash = true, });

            // Assert
            Assert.Equal("http://example.com/Foo/Bar%3Fencodeme%3F/Home/Index/?query=some%3Fquery#Fragment?", path);
        }

        [Fact]
        public void GetUriByRouteValues_WithHttpContext_WithPathBaseAndFragment()
        {
            // Arrange
            var endpoint1 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });
            var endpoint2 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id?}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });

            var linkGenerator = CreateLinkGenerator(endpoint1, endpoint2);

            var httpContext = CreateHttpContext();
            httpContext.Request.Scheme = "http";
            httpContext.Request.Host = new HostString("example.com");
            httpContext.Request.PathBase = new PathString("/Foo/Bar?encodeme?");

            // Act
            var uri = linkGenerator.GetUriByRouteValues(
                httpContext,
                routeName: null,
                values: new RouteValueDictionary(new { controller = "Home", action = "Index", query = "some?query" }),
                fragment: new FragmentString("#Fragment?"),
                options: new LinkOptions() { AppendTrailingSlash = true, });

            // Assert
            Assert.Equal("http://example.com/Foo/Bar%3Fencodeme%3F/Home/Index/?query=some%3Fquery#Fragment?", uri);
        }

        [Fact]
        public void GetUriByRouteValues_WithHttpContext_CanUseAmbientValues()
        {
            // Arrange
            var endpoint1 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });
            var endpoint2 = EndpointFactory.CreateRouteEndpoint(
                "Home/Index/{id?}",
                defaults: new { controller = "Home", action = "Index", },
                metadata: new[] { new RouteValuesAddressMetadata(new RouteValueDictionary(new { controller = "Home", action = "Index", })) });

            var linkGenerator = CreateLinkGenerator(endpoint1, endpoint2);

            var httpContext = CreateHttpContext(new { controller = "Home", });
            httpContext.Request.Scheme = "http";
            httpContext.Request.Host = new HostString("example.com");
            httpContext.Request.PathBase = new PathString("/Foo/Bar?encodeme?");

            // Act
            var uri = linkGenerator.GetUriByRouteValues(
                httpContext,
                routeName: null,
                values: new RouteValueDictionary(new { action = "Index", query = "some?query" }),
                fragment: new FragmentString("#Fragment?"),
                options: new LinkOptions() { AppendTrailingSlash = true, });

            // Assert
            Assert.Equal("http://example.com/Foo/Bar%3Fencodeme%3F/Home/Index/?query=some%3Fquery#Fragment?", uri);
        }
    }
}