// Copyright (C) Stichting Deltares 2025. All rights reserved.
// 
// This file is part of the application DAM - UI.
// 
// DAM - UI is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// 
// All names, logos, and references to "Deltares" are registered trademarks of
// Stichting Deltares and remain full property of Stichting Deltares at all times.
// All rights reserved.

using System;
using System.Collections.Generic;
using NetTopologySuite.Geometries;
using NSubstitute;
using NUnit.Framework;

namespace Deltares.Maps.Tests.Domain
{
    [TestFixture]
    public class CoverageFunctionTest
    {
        private IFeatureRepository repository;

        #region Setup

        [SetUp]
        public void TestSetup()
        {
            repository = Substitute.For<IFeatureRepository>();
        }

        #endregion

        [Test]
        public void GetCoverageFunction_NoAttributesInList_Throws()
        {
            Assert.That(() => CoverageFunction.GetCoverageFunc(repository, new List<string>()), Throws.ArgumentException);
        }

        [Test]
        public void GetCoverageFunction_AttributeListContainsInvalidString_Throws()
        {
            Assert.That(() => CoverageFunction.GetCoverageFunc(repository, new List<string>
            {
                ""
            }), Throws.ArgumentException);
        }

        [Test]
        public void GetCoverageFunction_SupportedAttributeListIsNull_Throws()
        {
            Assert.That(() => repository.GetCoverageFunc("SomeAttribute", null), Throws.ArgumentNullException);
        }

        [Test]
        public void GetCoverageFunction_RepositoryIsNull_Throws()
        {
            Assert.That(() => CoverageFunction.GetCoverageFunc(null, new[]
            {
                "SomeAttribute"
            }), Throws.ArgumentNullException);
        }

        [Test]
        public void UsingCoverageFunction_AttributeNameIsNullOrEmpty_Throws()
        {
            Func<string, double, double, object> func = CoverageFunction.GetCoverageFunc(repository, new[]
            {
                "SomeAttribute"
            });
            Assert.That(() => func("", 0, 0), Throws.ArgumentNullException);
        }

        [Test]
        public void CoverageFunction_AttributeNamesAndDifferentCase_ReturnsExpectedValue()
        {
            var lineString = new LineString(new[]
            {
                new Coordinate(1, 1),
                new Coordinate(1, 2)
            });

            var rep = new FeatureRepository();

            var geom = Feature.Create(lineString);
            rep.Add(geom);

            const string attribute = "SomeAttribute";
            const string expected = "test";
            geom.AddAttribute(attribute, expected);

            Func<string, double, double, object> func = rep.GetCoverageFunc();
            var actual = (string) func(attribute.ToUpper(), 1, 1);
            Assert.That(actual, Is.Not.Null);
            Assert.That(actual, Is.EqualTo(expected));

            actual = (string) func(attribute.ToLower(), 1, 1);
            Assert.That(actual, Is.Not.Null);
            Assert.That(actual, Is.EqualTo(expected));
        }

        [Test]
        public void UsingCoverageFunction_AttributeNamenotContainedInAttributeList_Throws()
        {
            Func<string, double, double, object> func = CoverageFunction.GetCoverageFunc(repository, new[]
            {
                "SomeAttribute"
            });
            Assert.That(() => func("AnotherAttribute", 0, 0), Throws.InstanceOf<AttributeMissingException>());
        }

        [Test]
        public void UsingCoverageFunction_MoreThenOneGeometryFoundAtGivenLocation_Throws()
        {
            var square = new Polygon(new LinearRing(new[]
            {
                new Coordinate(-1, 1),
                new Coordinate(1, 1),
                new Coordinate(1, -1),
                new Coordinate(-1, -1),
                new Coordinate(-1, 1)
            }));

            var geom = Feature.Create(square);
            repository.Query(Arg.Any<Geometry>()).Returns(new[]
            {
                geom,
                geom
            });

            const string attribute = "SomeAttribute";
            repository.SupportedAttributes.Returns(new[]
            {
                attribute.ToUpper()
            });

            Func<string, double, double, object> func = repository.GetCoverageFunc();

            Assert.That(() => func(attribute, 0, 0), Throws.InstanceOf<FeatureCoverageException>().With.Message.EqualTo("Multiple geometries found covering point (0 0)"));
        }

        [Test]
        public void UsingCoverageFunction_NoGeometryFoundAtGivenLocation_Throws()
        {
            var square = new Polygon(new LinearRing(new[]
            {
                new Coordinate(-1, 1),
                new Coordinate(1, 1),
                new Coordinate(1, -1),
                new Coordinate(-1, -1),
                new Coordinate(-1, 1)
            }));

            const string attribute = "SomeAttribute";
            repository.SupportedAttributes.Returns(new[]
            {
                attribute.ToUpper()
            });

            var geom = Feature.Create(square);
            repository.Query(Arg.Any<Geometry>()).Returns(new[]
            {
                geom
            });

            Func<string, double, double, object> func = repository.GetCoverageFunc();
            Assert.That(() => func("SomeAttribute", 10, 10), Throws.InstanceOf<FeatureCoverageException>().With.Message.EqualTo("No geometries found covering point (10 10)"));
        }

        [Test]
        public void UsingCoverageFunction_GeometryFoundAtGivenLocation_ReturnsAttributeValueAsDouble()
        {
            var square = new Polygon(new LinearRing(new[]
            {
                new Coordinate(-1, 1),
                new Coordinate(1, 1),
                new Coordinate(1, -1),
                new Coordinate(-1, -1),
                new Coordinate(-1, 1)
            }));

            var geom = Feature.Create(square);
            repository.Query(Arg.Any<Geometry>()).Returns(new[]
            {
                geom
            });

            const string attribute = "SomeAttribute";
            const double expected = 20;
            geom.AddAttribute(attribute, expected);

            repository.SupportedAttributes.Returns(new[]
            {
                attribute.ToUpper()
            });

            Func<string, double, double, object> func = repository.GetCoverageFunc();
            var actual = (double) func(attribute, 0, 0);
            Assert.That(actual, Is.EqualTo(expected).Within(0.0001));
        }

        [Test]
        public void UsingCoverageFunction_GeometryFoundAtGivenLocation_ReturnsAttributeValueAsStringType()
        {
            var square = new Polygon(new LinearRing(new[]
            {
                new Coordinate(-1, 1),
                new Coordinate(1, 1),
                new Coordinate(1, -1),
                new Coordinate(-1, -1),
                new Coordinate(-1, 1)
            }));

            var geom = Feature.Create(square);
            repository.Query(Arg.Any<Geometry>()).Returns(new[]
            {
                geom
            });

            const string attribute = "SomeAttribute";
            const string expected = "test";
            geom.AddAttribute(attribute, expected);

            repository.SupportedAttributes.Returns(new[]
            {
                attribute
            });

            Func<string, double, double, object> func = repository.GetCoverageFunc();
            var actual = (string) func(attribute, 0, 0);
            Assert.That(actual, Is.Not.Null);
            Assert.That(actual, Is.EqualTo(expected));
        }

        [Test]
        public void UsingCoverageFunctionForGivenLocation_RepositoryContainsLinestringGeometryType_ReturnsValue()
        {
            var lineString = new LineString(new[]
            {
                new Coordinate(1, 1),
                new Coordinate(1, 2)
            });

            var geom = Feature.Create(lineString);
            repository.Query(Arg.Any<Geometry>()).Returns(new[]
            {
                geom
            });

            const string attribute = "SomeAttribute";
            const double expected = 5;
            geom.AddAttribute(attribute, expected);

            repository.SupportedAttributes.Returns(new[]
            {
                attribute
            });

            Func<string, double, double, object> func = repository.GetCoverageFunc();
            var actual = (double) func(attribute, 1, 1);
            Assert.That(actual, Is.EqualTo(expected));

            actual = (double) func(attribute, 1, 2);
            Assert.That(actual, Is.EqualTo(expected));

            actual = (double) func(attribute, 1, 1.5);
            Assert.That(actual, Is.EqualTo(expected));
        }

        [Test]
        public void UsingCoverageFunctionCreatedByGeometryRepository_GeometryFoundAtGivenLocation_ReturnsAttributeValue()
        {
            const string attribute = "SomeAttribute";
            const double expected = 20;

            var square = new Polygon(new LinearRing(new[]
            {
                new Coordinate(-1, 1),
                new Coordinate(1, 1),
                new Coordinate(1, -1),
                new Coordinate(-1, -1),
                new Coordinate(-1, 1)
            }));

            var geom = Feature.Create(square);
            geom.AddAttribute(attribute, expected);
            repository.Query(Arg.Any<Geometry>()).Returns(new[]
            {
                geom
            });
            repository.SupportedAttributes.Returns(new[]
            {
                attribute.ToUpper()
            });

            Func<double, double, object> func = repository.GetCoverageFunc(attribute);
            var actual = (double) func(0, 0);
            Assert.That(actual, Is.EqualTo(expected).Within(0.0001));
        }
    }
}