// <copyright file="BuildTests.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 System.Runtime.InteropServices;
using IntegrationTests.Helpers;

namespace IntegrationTests;

[UsesVerify]
public class BuildTests
{
    [Fact]
    public Task DistributionStructure()
    {
        var distributionFolder = EnvironmentHelper.GetNukeBuildOutput();
        var files = Directory.GetFiles(distributionFolder, "*", SearchOption.AllDirectories);

        var relativesPaths = new List<string>(files.Length);
        foreach (var file in files)
        {
            relativesPaths.Add(file.Substring(distributionFolder.Length));
        }

        relativesPaths.Sort(StringComparer.Ordinal);

        var systemName = GetSystemName();

        return Verifier.Verify(relativesPaths)
            .UseTextForParameters(systemName)
            .DisableDiff();
    }

    private static string GetSystemName()
    {
        if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
        {
            return "osx";
        }

        if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
        {
            if (Environment.GetEnvironmentVariable("IsAlpine") == "true")
            {
                return "alpine-linux";
            }

            return "linux";
        }

        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
        {
            return "windows";
        }

        return "unknown";
    }
}