// 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 System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNet.Hosting;
using Microsoft.Framework.DependencyInjection;
using Microsoft.Framework.DependencyInjection.Fallback;
using Microsoft.Framework.OptionsModel;
using Moq;

namespace Microsoft.AspNet.Identity.Test
{
    public static class MockHelpers
    {
        //public static UserManager<TUser> CreateManager<TUser>(IUserStore<TUser> store) where TUser : class
        //{
        //    var services = new ServiceCollection();
        //    services.Add(OptionsServices.GetDefaultServices());
        //    services.Add(HostingServices.GetDefaultServices());
        //    services.AddDefaultIdentity<TUser, IdentityRole>().AddUserStore(store);
        //    services.ConfigureIdentity(options =>
        //    {
        //        options.Password.RequireDigit = false;
        //        options.Password.RequireLowercase = false;
        //        options.Password.RequireNonLetterOrDigit = false;
        //        options.Password.RequireUppercase = false;
        //        options.User.UserNameValidationRegex = null;
        //    });
        //    return services.BuildServiceProvider().GetService<UserManager<TUser>>();
        //}

        public static Mock<UserManager<TUser>> MockUserManager<TUser>() where TUser : class
        {
            var store = new Mock<IUserStore<TUser>>();
            var options = new OptionsManager<IdentityOptions>(null);
            return new Mock<UserManager<TUser>>(
                store.Object,
                options,
                new PasswordHasher<TUser>(new PasswordHasherOptionsAccessor()),
                new UserValidator<TUser>(),
                new PasswordValidator<TUser>(),
                new UpperInvariantUserNameNormalizer(),
                new List<IUserTokenProvider<TUser>>(),
                new List<IIdentityMessageProvider>());
        }

        public static Mock<RoleManager<TRole>> MockRoleManager<TRole>() where TRole : class
        {
            var store = new Mock<IRoleStore<TRole>>();
            return new Mock<RoleManager<TRole>>(store.Object, new RoleValidator<TRole>());
        }

        public static UserManager<TUser> TestUserManager<TUser>() where TUser : class
        {
            return TestUserManager(new Mock<IUserStore<TUser>>().Object);
        }

        public static UserManager<TUser> TestUserManager<TUser>(IUserStore<TUser> store) where TUser : class
        {
            var options = new OptionsManager<IdentityOptions>(null);
            var validator = new Mock<UserValidator<TUser>>();
            var userManager = new UserManager<TUser>(store, options, new PasswordHasher<TUser>(new PasswordHasherOptionsAccessor()), 
                validator.Object, new PasswordValidator<TUser>(), new UpperInvariantUserNameNormalizer(), null, null);
            validator.Setup(v => v.ValidateAsync(userManager, It.IsAny<TUser>(), CancellationToken.None))
                .Returns(Task.FromResult(IdentityResult.Success)).Verifiable();
            return userManager;
        }
    }
}