// Copyright (c) Umbraco.
// See LICENSE for more details.

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using Moq;
using NUnit.Framework;
using Umbraco.Cms.Core.Cache;
using Umbraco.Cms.Core.Models;
using Umbraco.Cms.Core.Models.Entities;
using Umbraco.Cms.Core.Services;
using Umbraco.Cms.Tests.Common.Builders;
using User = Umbraco.Cms.Core.Models.Membership.User;

namespace Umbraco.Cms.Tests.UnitTests.Umbraco.Core.Models
{
    [TestFixture]
    public class UserExtensionsTests
    {
        private UserBuilder _userBuilder;

        [SetUp]
        public void SetUp() => _userBuilder = new UserBuilder();

        [TestCase(-1, "-1", "-1,1,2,3,4,5", true)] // below root start node
        [TestCase(2, "-1,1,2", "-1,1,2,3,4,5", true)] // below start node
        [TestCase(5, "-1,1,2,3,4,5", "-1,1,2,3,4,5", true)] // at start node

        [TestCase(6, "-1,1,2,3,4,5,6", "-1,1,2,3,4,5", false)] // above start node

        [TestCase(-1, "-1", "-1,-20,1,2,3,4,5", true)] // below root start node, bin
        [TestCase(1, "-1,-20,1", "-1,-20,1,2,3,4,5", false)] // below bin start node

        public void Determines_Path_Based_Access_To_Content(int startNodeId, string startNodePath, string contentPath, bool outcome)
        {
            User user = _userBuilder
                .WithStartContentIds(new[] { startNodeId })
                .Build();

            IContent content = Mock.Of<IContent>(c => c.Path == contentPath && c.Id == 5);

            var esmock = new Mock<IEntityService>();
            esmock
                .Setup(x => x.GetAllPaths(It.IsAny<UmbracoObjectTypes>(), It.IsAny<int[]>()))
                .Returns<UmbracoObjectTypes, int[]>((type, ids) => new[] { new TreeEntityPath { Id = startNodeId, Path = startNodePath } });

            Assert.AreEqual(outcome, user.HasPathAccess(content, esmock.Object, AppCaches.Disabled));
        }

        [TestCase("", "1", "1")] // single user start, top level
        [TestCase("", "4", "4")] // single user start, deeper level
        [TestCase("", "2,3", "2,3")] // many user starts
        [TestCase("", "2,3,4", "3,4")] // many user starts, de-duplicate to deepest

        [TestCase("1", "", "1")] // single group start, top level
        [TestCase("4", "", "4")] // single group start, deeper leve
        [TestCase("2,3", "", "2,3")] // many group starts
        [TestCase("2,3,4", "", "2,3")] // many group starts, de-duplicate to upmost

        [TestCase("3", "2", "3,2")] // user and group start, combine
        [TestCase("3", "2,5", "2,5")] // user and group start, restrict
        [TestCase("3", "2,1", "2,1")] // user and group start, expand

        [TestCase("3,8", "2,6", "3,2")] // exclude bin
        [TestCase("", "6", "")] // exclude bin

        [TestCase("1,-1", "1", "1")] // was an issue
        [TestCase("-1,1", "1", "1")] // was an issue

        [TestCase("-1", "", "-1")]
        [TestCase("", "-1", "-1")]

        public void CombineStartNodes(string groupSn, string userSn, string expected)
        {
            // 1
            //  3
            //   5
            // 2
            //  4
            // bin
            //  6
            //  7
            //   8
            var paths = new Dictionary<int, string>
            {
                { 1, "-1,1" },
                { 2, "-1,2" },
                { 3, "-1,1,3" },
                { 4, "-1,2,4" },
                { 5, "-1,1,3,5" },
                { 6, "-1,-20,6" },
                { 7, "-1,-20,7" },
                { 8, "-1,-20,7,8" },
            };

            var esmock = new Mock<IEntityService>();
            esmock
                .Setup(x => x.GetAllPaths(It.IsAny<UmbracoObjectTypes>(), It.IsAny<int[]>()))
                .Returns<UmbracoObjectTypes, int[]>((type, ids) => paths.Where(x => ids.Contains(x.Key)).Select(x => new TreeEntityPath { Id = x.Key, Path = x.Value }));

            var comma = new[] { ',' };

            var groupSnA = groupSn.Split(comma, StringSplitOptions.RemoveEmptyEntries).Select(x=>int.Parse(x, CultureInfo.InvariantCulture)).ToArray();
            var userSnA = userSn.Split(comma, StringSplitOptions.RemoveEmptyEntries).Select(x=>int.Parse(x, CultureInfo.InvariantCulture)).ToArray();
            var combinedA = UserExtensions.CombineStartNodes(UmbracoObjectTypes.Document, groupSnA, userSnA, esmock.Object).OrderBy(x => x).ToArray();
            var expectedA = expected.Split(comma, StringSplitOptions.RemoveEmptyEntries).Select(x=>int.Parse(x, CultureInfo.InvariantCulture)).OrderBy(x => x).ToArray();

            var ok = combinedA.Length == expectedA.Length;
            if (ok)
            {
                ok = expectedA.Where((t, i) => t != combinedA[i]).Any() == false;
            }

            if (ok == false)
            {
                Assert.Fail("Expected \"" + string.Join(",", expectedA) + "\" but got \"" + string.Join(",", combinedA) + "\".");
            }
        }
    }
}