// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschränkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using Squidex.Domain.Apps.Core.Contents;
using Xunit;

#pragma warning disable xUnit2013 // Do not use equality check to check for collection size.

namespace Squidex.Domain.Apps.Core.Model.Contents
{
    public class ContentDataTests
    {
        [Fact]
        public void Should_remove_null_values_from_name_model_when_cleaning()
        {
            var input =
                new NamedContentData()
                    .AddField("field1", null)
                    .AddField("field2",
                        new ContentFieldData()
                            .AddValue("en", 2)
                            .AddValue("it", null));

            var actual = input.ToCleaned();

            var expected =
                new NamedContentData()
                    .AddField("field2",
                        new ContentFieldData()
                            .AddValue("en", 2));

            Assert.Equal(expected, actual);
        }

        [Fact]
        public void Should_remove_null_values_from_id_model_when_cleaning()
        {
            var input =
                new IdContentData()
                    .AddField(1, null)
                    .AddField(2,
                        new ContentFieldData()
                            .AddValue("en", 2)
                            .AddValue("it", null));

            var actual = input.ToCleaned();

            var expected =
                new IdContentData()
                    .AddField(2,
                        new ContentFieldData()
                            .AddValue("en", 2));

            Assert.Equal(expected, actual);
        }

        [Fact]
        public void Should_return_same_content_if_merging_same_references()
        {
            var source =
                new NamedContentData()
                    .AddField("field1",
                        new ContentFieldData()
                            .AddValue("iv", 1))
                    .AddField("field2",
                        new ContentFieldData()
                            .AddValue("de", 2));

            var actual = source.MergeInto(source);

            Assert.Same(source, actual);
        }

        [Fact]
        public void Should_merge_two_name_models()
        {
            var lhs =
                new NamedContentData()
                    .AddField("field1",
                        new ContentFieldData()
                            .AddValue("iv", 1))
                    .AddField("field2",
                        new ContentFieldData()
                            .AddValue("de", 2)
                            .AddValue("it", 2));

            var rhs =
                new NamedContentData()
                    .AddField("field2",
                        new ContentFieldData()
                            .AddValue("it", 3)
                            .AddValue("en", 3))
                    .AddField("field3",
                        new ContentFieldData()
                            .AddValue("iv", 4));

            var expected =
                new NamedContentData()
                    .AddField("field1",
                        new ContentFieldData()
                            .AddValue("iv", 1))
                    .AddField("field2",
                        new ContentFieldData()
                            .AddValue("it", 2)
                            .AddValue("de", 2)
                            .AddValue("en", 3))
                    .AddField("field3",
                        new ContentFieldData()
                            .AddValue("iv", 4));

            var actual = lhs.MergeInto(rhs);

            Assert.Equal(expected, actual);
            Assert.NotSame(expected, rhs);
            Assert.NotSame(expected, lhs);
        }

        [Fact]
        public void Should_merge_two_id_models()
        {
            var lhs =
                new IdContentData()
                    .AddField(1,
                        new ContentFieldData()
                            .AddValue("iv", 1))
                    .AddField(2,
                        new ContentFieldData()
                            .AddValue("de", 2)
                            .AddValue("it", 2));

            var rhs =
                new IdContentData()
                    .AddField(2,
                        new ContentFieldData()
                            .AddValue("it", 3)
                            .AddValue("en", 3))
                    .AddField(3,
                        new ContentFieldData()
                            .AddValue("iv", 4));

            var expected =
                new IdContentData()
                    .AddField(1,
                        new ContentFieldData()
                            .AddValue("iv", 1))
                    .AddField(2,
                        new ContentFieldData()
                            .AddValue("it", 2)
                            .AddValue("de", 2)
                            .AddValue("en", 3))
                    .AddField(3,
                        new ContentFieldData()
                            .AddValue("iv", 4));

            var actual = lhs.MergeInto(rhs);

            Assert.Equal(expected, actual);
            Assert.NotSame(expected, rhs);
            Assert.NotSame(expected, lhs);
        }

        [Fact]
        public void Should_be_equal_when_data_have_same_structure()
        {
            var lhs =
                new NamedContentData()
                    .AddField("field1",
                        new ContentFieldData()
                            .AddValue("iv", 2))
                    .AddField("field2",
                        new ContentFieldData()
                            .AddValue("iv", 2));

            var rhs =
                new NamedContentData()
                    .AddField("field1",
                        new ContentFieldData()
                            .AddValue("iv", 2))
                    .AddField("field2",
                        new ContentFieldData()
                            .AddValue("iv", 2));

            Assert.True(lhs.Equals(rhs));
            Assert.True(lhs.Equals((object)rhs));
            Assert.Equal(lhs.GetHashCode(), rhs.GetHashCode());
        }

        [Fact]
        public void Should_not_be_equal_when_data_have_not_same_structure()
        {
            var lhs =
                new NamedContentData()
                    .AddField("field1",
                        new ContentFieldData()
                            .AddValue("iv", 2))
                    .AddField("field2",
                        new ContentFieldData()
                            .AddValue("iv", 2));

            var rhs =
                new NamedContentData()
                    .AddField("field1",
                        new ContentFieldData()
                            .AddValue("en", 2))
                    .AddField("field3",
                        new ContentFieldData()
                            .AddValue("iv", 2));

            Assert.False(lhs.Equals(rhs));
            Assert.False(lhs.Equals((object)rhs));
            Assert.NotEqual(lhs.GetHashCode(), rhs.GetHashCode());
        }

        [Fact]
        public void Should_be_equal_fields_when_they_have_same_value()
        {
            var lhs =
                new ContentFieldData()
                    .AddValue("iv", 2);

            var rhs =
                new ContentFieldData()
                    .AddValue("iv", 2);

            Assert.True(lhs.Equals(rhs));
            Assert.True(lhs.Equals((object)rhs));
            Assert.Equal(lhs.GetHashCode(), rhs.GetHashCode());
        }
    }
}