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

using Microsoft.Framework.DependencyInjection;
using Microsoft.Framework.DependencyInjection.Fallback;
using Microsoft.Framework.OptionsModel;
using System.Collections.Generic;
using Xunit;
using System;
using System.Threading;
using System.Threading.Tasks;
using System.Linq;
using Microsoft.AspNet.Security.DataProtection;

namespace Microsoft.AspNet.Identity.Test
{
    public class IdentityBuilderTest
    {

        [Fact]
        public void CanOverrideUserStore()
        {
            var services = new ServiceCollection();
            services.AddIdentity().AddUserStore<MyUberThingy>();
            var thingy = services.BuildServiceProvider().GetRequiredService<IUserStore<IdentityUser>>() as MyUberThingy;
            Assert.NotNull(thingy);
        }

        [Fact]
        public void CanOverrideRoleStore()
        {
            var services = new ServiceCollection();
            services.AddIdentity().AddRoleStore<MyUberThingy>();
            var thingy = services.BuildServiceProvider().GetRequiredService<IRoleStore<IdentityRole>>() as MyUberThingy;
            Assert.NotNull(thingy);
        }

        [Fact]
        public void CanOverrideRoleValidator()
        {
            var services = new ServiceCollection();
            services.AddIdentity().AddRoleValidator<MyUberThingy>();
            var thingy = services.BuildServiceProvider().GetRequiredService<IRoleValidator<IdentityRole>>() as MyUberThingy;
            Assert.NotNull(thingy);
        }

        [Fact]
        public void CanOverrideUserValidator()
        {
            var services = new ServiceCollection();
            services.AddIdentity().AddUserValidator<MyUberThingy>();
            var thingy = services.BuildServiceProvider().GetRequiredService<IUserValidator<IdentityUser>>() as MyUberThingy;
            Assert.NotNull(thingy);
        }

        [Fact]
        public void CanOverridePasswordValidator()
        {
            var services = new ServiceCollection();
            services.AddIdentity().AddPasswordValidator<MyUberThingy>();
            var thingy = services.BuildServiceProvider().GetRequiredService<IPasswordValidator<IdentityUser>>() as MyUberThingy;
            Assert.NotNull(thingy);
        }

        [Fact]
        public void EnsureDefaultServices()
        {
            var services = new ServiceCollection();
            services.AddIdentity();
            services.Add(OptionsServices.GetDefaultServices());

            var provider = services.BuildServiceProvider();
            var userValidator = provider.GetRequiredService<IUserValidator<IdentityUser>>() as UserValidator<IdentityUser>;
            Assert.NotNull(userValidator);

            var pwdValidator = provider.GetRequiredService<IPasswordValidator<IdentityUser>>() as PasswordValidator<IdentityUser>;
            Assert.NotNull(pwdValidator);

            var hasher = provider.GetRequiredService<IPasswordHasher<IdentityUser>>() as PasswordHasher<IdentityUser>;
            Assert.NotNull(hasher);
        }

        [Fact]
        public void EnsureDefaultTokenProviders()
        {
            var services = new ServiceCollection();
            services.AddIdentity().AddDefaultTokenProviders();
            services.Add(DataProtectionServices.GetDefaultServices());
            services.Add(OptionsServices.GetDefaultServices());

            var provider = services.BuildServiceProvider();
            var tokenProviders = provider.GetRequiredService<IEnumerable<IUserTokenProvider<IdentityUser>>>();
            Assert.Equal(3, tokenProviders.Count());
        }

        private class MyUberThingy : IUserValidator<IdentityUser>, IPasswordValidator<IdentityUser>, IRoleValidator<IdentityRole>, IUserStore<IdentityUser>, IRoleStore<IdentityRole>
        {
            public Task CreateAsync(IdentityRole role, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task CreateAsync(IdentityUser user, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task DeleteAsync(IdentityRole role, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task DeleteAsync(IdentityUser user, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public void Dispose()
            {
                throw new NotImplementedException();
            }

            public Task<IdentityUser> FindByIdAsync(string userId, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task<IdentityUser> FindByNameAsync(string normalizedUserName, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task<string> GetNormalizedUserNameAsync(IdentityUser user, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task<string> GetRoleIdAsync(IdentityRole role, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task<string> GetRoleNameAsync(IdentityRole role, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task<string> GetUserIdAsync(IdentityUser user, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task<string> GetUserNameAsync(IdentityUser user, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task SetNormalizedUserNameAsync(IdentityUser user, string normalizedName, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task SetRoleNameAsync(IdentityRole role, string roleName, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task SetUserNameAsync(IdentityUser user, string userName, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task UpdateAsync(IdentityRole role, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task UpdateAsync(IdentityUser user, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task<IdentityResult> ValidateAsync(RoleManager<IdentityRole> manager, IdentityRole role, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task<IdentityResult> ValidateAsync(UserManager<IdentityUser> manager, IdentityUser user, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            public Task<IdentityResult> ValidateAsync(IdentityUser user, string password, UserManager<IdentityUser> manager, CancellationToken cancellationToken = default(CancellationToken))
            {
                throw new NotImplementedException();
            }

            Task<IdentityRole> IRoleStore<IdentityRole>.FindByIdAsync(string roleId, CancellationToken cancellationToken)
            {
                throw new NotImplementedException();
            }

            Task<IdentityRole> IRoleStore<IdentityRole>.FindByNameAsync(string roleName, CancellationToken cancellationToken)
            {
                throw new NotImplementedException();
            }
        }

    }
}