// <copyright file="PluginsTests.cs" company="OpenTelemetry Authors">
// Copyright The OpenTelemetry Authors
//
// 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.
// </copyright>

using FluentAssertions;
using IntegrationTests.Helpers;
using Xunit.Abstractions;

namespace IntegrationTests;

public class PluginsTests : TestHelper
{
    public PluginsTests(ITestOutputHelper output)
        : base("Plugins", output)
    {
    }

    [Fact]
    [Trait("Category", "EndToEnd")]
    public void InitPlugin()
    {
        SetEnvironmentVariable("OTEL_DOTNET_AUTO_PLUGINS", "TestApplication.Plugins.Plugin, TestApplication.Plugins, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null");

        var (standardOutput, _) = RunTestApplication();

        standardOutput.Should().Contain("Plugin.Initializing() invoked.");
    }

    [Fact]
    [Trait("Category", "EndToEnd")]
    public void SubmitsTraces()
    {
        using var collector = new MockSpansCollector(Output);
        SetExporter(collector);
        collector.Expect("MyCompany.MyProduct.MyLibrary");
#if NETFRAMEWORK
        collector.Expect("OpenTelemetry.Instrumentation.Http.HttpWebRequest", span => span.Attributes.Any(att => att.Key == "example.plugin"));
#elif NET7_0_OR_GREATER
        collector.Expect("System.Net.Http", span => span.Attributes.Any(att => att.Key == "example.plugin"));
#else
        collector.Expect("OpenTelemetry.Instrumentation.Http.HttpClient", span => span.Attributes.Any(att => att.Key == "example.plugin"));
#endif

        SetEnvironmentVariable("OTEL_DOTNET_AUTO_PLUGINS", "TestApplication.Plugins.Plugin, TestApplication.Plugins, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null");
        var (standardOutput, _) = RunTestApplication();

        collector.AssertExpectations();
        standardOutput.Should().Contain("Plugin.ConfigureTracesOptions(OtlpExporterOptions options) invoked.");
    }

    [Fact]
    [Trait("Category", "EndToEnd")]
    public void SubmitMetrics()
    {
        using var collector = new MockMetricsCollector(Output);
        SetExporter(collector);
        collector.Expect("MyCompany.MyProduct.MyLibrary");

        SetEnvironmentVariable("OTEL_DOTNET_AUTO_PLUGINS", "TestApplication.Plugins.Plugin, TestApplication.Plugins, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null");

        var (standardOutput, _) = RunTestApplication();

        collector.AssertExpectations();
        standardOutput.Should().Contain("Plugin.ConfigureMetricsOptions(OtlpExporterOptions options) invoked.");
    }
}
