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

using System;
using System.Collections.Generic;
using System.Linq;
using FakeItEasy;
using MongoDB.Bson.Serialization;
using MongoDB.Driver;
using NodaTime.Text;
using Squidex.Domain.Apps.Core.Contents;
using Squidex.Domain.Apps.Entities.MongoDb.Assets;
using Squidex.Domain.Apps.Entities.MongoDb.Assets.Visitors;
using Squidex.Infrastructure;
using Squidex.Infrastructure.MongoDb;
using Squidex.Infrastructure.MongoDb.Queries;
using Squidex.Infrastructure.Queries;
using Squidex.Infrastructure.Validation;
using Xunit;
using ClrFilter = Squidex.Infrastructure.Queries.ClrFilter;
using SortBuilder = Squidex.Infrastructure.Queries.SortBuilder;

namespace Squidex.Domain.Apps.Entities.Assets.MongoDb
{
    public class AssetQueryTests
    {
        private static readonly IBsonSerializerRegistry Registry = BsonSerializer.SerializerRegistry;
        private static readonly IBsonSerializer<MongoAssetEntity> Serializer = BsonSerializer.SerializerRegistry.GetSerializer<MongoAssetEntity>();
        private readonly DomainId appId = DomainId.NewGuid();

        static AssetQueryTests()
        {
            DomainIdSerializer.Register();

            TypeConverterStringSerializer<RefToken>.Register();
            TypeConverterStringSerializer<Status>.Register();

            InstantSerializer.Register();
        }

        [Fact]
        public void Should_throw_exception_for_full_text_search()
        {
            Assert.Throws<ValidationException>(() => AssertQuery(string.Empty, new ClrQuery { FullText = "Full Text" }));
        }

        [Fact]
        public void Should_make_query_with_id()
        {
            var id = Guid.NewGuid();

            var filter = ClrFilter.Eq("id", id);

            AssertQuery($"{{ '_id' : '{appId}--{id}' }}", filter);
        }

        [Fact]
        public void Should_make_query_with_id_string()
        {
            var id = DomainId.NewGuid().ToString();

            var filter = ClrFilter.Eq("id", id);

            AssertQuery($"{{ '_id' : '{appId}--{id}' }}", filter);
        }

        [Fact]
        public void Should_make_query_with_id_list()
        {
            var id = Guid.NewGuid();

            var filter = ClrFilter.In("id", new List<Guid> { id });

            AssertQuery($"{{ '_id' : {{ '$in' : ['{appId}--{id}'] }} }}", filter);
        }

        [Fact]
        public void Should_make_query_with_id_string_list()
        {
            var id = DomainId.NewGuid().ToString();

            var filter = ClrFilter.In("id", new List<string> { id });

            AssertQuery($"{{ '_id' : {{ '$in' : ['{appId}--{id}'] }} }}", filter);
        }

        [Fact]
        public void Should_make_query_with_lastModified()
        {
            var time = "1988-01-19T12:00:00Z";

            var filter = ClrFilter.Eq("lastModified", InstantPattern.ExtendedIso.Parse(time).Value);

            AssertQuery("{ 'mt' : ISODate('[value]') }", filter, time);
        }

        [Fact]
        public void Should_make_query_with_lastModifiedBy()
        {
            var filter = ClrFilter.Eq("lastModifiedBy", "subject:me");

            AssertQuery("{ 'mb' : 'subject:me' }", filter);
        }

        [Fact]
        public void Should_make_query_with_created()
        {
            var time = "1988-01-19T12:00:00Z";

            var filter = ClrFilter.Eq("created", InstantPattern.ExtendedIso.Parse(time).Value);

            AssertQuery("{ 'ct' : ISODate('[value]') }", filter, time);
        }

        [Fact]
        public void Should_make_query_with_createdBy()
        {
            var filter = ClrFilter.Eq("createdBy", "subject:me");

            AssertQuery("{ 'cb' : 'subject:me' }", filter);
        }

        [Fact]
        public void Should_make_query_with_version()
        {
            var filter = ClrFilter.Eq("version", 2L);

            AssertQuery("{ 'vs' : NumberLong(2) }", filter);
        }

        [Fact]
        public void Should_make_query_with_fileVersion()
        {
            var filter = ClrFilter.Eq("fileVersion", 2L);

            AssertQuery("{ 'fv' : NumberLong(2) }", filter);
        }

        [Fact]
        public void Should_make_query_with_tags()
        {
            var filter = ClrFilter.Eq("tags", "tag1");

            AssertQuery("{ 'td' : 'tag1' }", filter);
        }

        [Fact]
        public void Should_make_query_with_fileName()
        {
            var filter = ClrFilter.Eq("fileName", "Logo.png");

            AssertQuery("{ 'fn' : 'Logo.png' }", filter);
        }

        [Fact]
        public void Should_make_query_with_mimeType()
        {
            var filter = ClrFilter.Eq("mimeType", "text/json");

            AssertQuery("{ 'mm' : 'text/json' }", filter);
        }

        [Fact]
        public void Should_make_query_with_fileSize()
        {
            var filter = ClrFilter.Eq("fileSize", 1024);

            AssertQuery("{ 'fs' : NumberLong(1024) }", filter);
        }

        [Fact]
        public void Should_make_query_with_pixelHeight()
        {
            var filter = ClrFilter.Eq("metadata.pixelHeight", 600);

            AssertQuery("{ 'md.pixelHeight' : 600 }", filter);
        }

        [Fact]
        public void Should_make_query_with_pixelWidth()
        {
            var filter = ClrFilter.Eq("metadata.pixelWidth", 800);

            AssertQuery("{ 'md.pixelWidth' : 800 }", filter);
        }

        [Fact]
        public void Should_make_orderby_with_single_field()
        {
            var sorting = SortBuilder.Descending("created");

            AssertSorting("{ 'ct' : -1 }", sorting);
        }

        [Fact]
        public void Should_make_orderby_with_multiple_fields()
        {
            var sorting1 = SortBuilder.Ascending("created");
            var sorting2 = SortBuilder.Descending("createdBy");

            AssertSorting("{ 'ct' : 1, 'cb' : -1 }", sorting1, sorting2);
        }

        private void AssertQuery(string expected, FilterNode<ClrValue> filter, object? arg = null)
        {
            AssertQuery(expected, new ClrQuery { Filter = filter }, arg);
        }

        private void AssertQuery(string expected, ClrQuery query, object? arg = null)
        {
            var rendered =
                query.AdjustToModel(appId).BuildFilter<MongoAssetEntity>(false).Filter!
                    .Render(Serializer, Registry).ToString();

            var expectation = Cleanup(expected, arg);

            Assert.Equal(expectation, rendered);
        }

        private void AssertSorting(string expected, params SortNode[] sort)
        {
            var cursor = A.Fake<IFindFluent<MongoAssetEntity, MongoAssetEntity>>();

            var rendered = string.Empty;

            A.CallTo(() => cursor.Sort(A<SortDefinition<MongoAssetEntity>>._))
                .Invokes((SortDefinition<MongoAssetEntity> sortDefinition) =>
                {
                    rendered = sortDefinition.Render(Serializer, Registry).ToString();
                });

            cursor.QuerySort(new ClrQuery { Sort = sort.ToList() }.AdjustToModel(appId));

            var expectation = Cleanup(expected);

            Assert.Equal(expectation, rendered);
        }

        private static string Cleanup(string filter, object? arg = null)
        {
            return filter.Replace('\'', '"').Replace("[value]", arg?.ToString());
        }
    }
}