/*
 * QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
 * Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/

using NUnit.Framework;
using Python.Runtime;
using QuantConnect.Data;
using System;
using System.Collections.Generic;

namespace QuantConnect.Tests.Common.Data
{
    [TestFixture]
    public class SubscriptionDataSourceTests
    {
        [Test]
        public void ComparesEqualWithIdenticalSourceAndTransportMedium()
        {
            var one = new SubscriptionDataSource("source", SubscriptionTransportMedium.LocalFile);
            var two = new SubscriptionDataSource("source", SubscriptionTransportMedium.LocalFile);
            Assert.IsTrue(one == two);
            Assert.IsTrue(one.Equals(two));
        }

        [Test]
        public void ComparesNotEqualWithDifferentSource()
        {
            var one = new SubscriptionDataSource("source1", SubscriptionTransportMedium.LocalFile);
            var two = new SubscriptionDataSource("source2", SubscriptionTransportMedium.LocalFile);
            Assert.IsTrue(one != two);
            Assert.IsTrue(!one.Equals(two));
        }

        [Test]
        public void ComparesNotEqualWithDifferentTransportMedium()
        {
            var one = new SubscriptionDataSource("source", SubscriptionTransportMedium.LocalFile);
            var two = new SubscriptionDataSource("source", SubscriptionTransportMedium.RemoteFile);
            Assert.IsTrue(one != two);
            Assert.IsTrue(!one.Equals(two));
        }

        [Test]
        public void SupportsPythonDictionaryHeaders()
        {
            using (Py.GIL())
            {
                using var headers = new PyDict();
                headers.SetItem("Authorization".ToPython(), "Basic test-token".ToPython());
                headers.SetItem("X-Api-Key".ToPython(), "abc123".ToPython());

                var dataSource = new SubscriptionDataSource("https://example.com", SubscriptionTransportMedium.RemoteFile, FileFormat.Csv, headers);
                CollectionAssert.AreEquivalent(new[]
                {
                    new KeyValuePair<string, string>("Authorization", "Basic test-token"),
                    new KeyValuePair<string, string>("X-Api-Key", "abc123")
                }, dataSource.Headers);
            }
        }

        [Test]
        public void SupportsNullPythonDictionaryHeaders()
        {
            var dataSource = new SubscriptionDataSource("https://example.com", SubscriptionTransportMedium.RemoteFile, FileFormat.Csv, (PyObject)null);
            Assert.IsEmpty(dataSource.Headers);
        }

        [Test]
        public void ThrowsForInvalidPythonHeadersType()
        {
            using (Py.GIL())
            {
                using var invalidHeaders = "invalid-headers".ToPython();

                var exception = Assert.Throws<ArgumentException>(() =>
                    new SubscriptionDataSource("https://example.com", SubscriptionTransportMedium.RemoteFile, FileFormat.Csv, invalidHeaders));

                StringAssert.Contains("ConvertToDictionary cannot be used", exception.Message);
            }
        }
    }
}