namespace Explorer.Hosting.Tests;

public class ProjectGraphTests
{
    [Fact]
    public void App_references_client_not_host_runtime_or_plugin_implementations()
    {
        var csproj = File.ReadAllText(Path.Combine(RepoRoot(), "src", "Explorer.App", "Explorer.App.csproj"));
        Assert.Contains("Explorer.Hosting.Client", csproj);
        Assert.Contains("Explorer.Presentation", csproj);
        Assert.DoesNotContain("Explorer.Hosting\\Explorer.Hosting.csproj", csproj);
        Assert.DoesNotContain("Explorer.Plugin.OneDrive", csproj);
        Assert.DoesNotContain("Explorer.Plugin.GoogleDrive", csproj);
        Assert.DoesNotContain("Explorer.Plugin.Nextcloud", csproj);
        Assert.DoesNotContain("Explorer.Indexing", csproj);
    }

    [Fact]
    public void Client_does_not_reference_plugin_implementations_or_scanners()
    {
        var csproj = File.ReadAllText(Path.Combine(RepoRoot(), "src", "Explorer.Hosting.Client", "Explorer.Hosting.Client.csproj"));
        Assert.Contains("Explorer.Plugin.Abstractions", csproj);
        Assert.Contains("Explorer.Storage.Sqlite", csproj);
        Assert.DoesNotContain("Explorer.Plugin.OneDrive", csproj);
        Assert.DoesNotContain("Explorer.Plugin.GoogleDrive", csproj);
        Assert.DoesNotContain("Explorer.Plugin.Nextcloud", csproj);
        Assert.DoesNotContain("Explorer.Indexing", csproj);
        Assert.DoesNotContain("Explorer.Hosting\\Explorer.Hosting.csproj", csproj);
    }

    [Fact]
    public void Host_runtime_owns_plugins_and_references_the_client()
    {
        var csproj = File.ReadAllText(Path.Combine(RepoRoot(), "src", "Explorer.Hosting", "Explorer.Hosting.csproj"));
        Assert.Contains("Explorer.Hosting.Client", csproj);
        Assert.Contains("Explorer.Plugin.OneDrive", csproj);
        Assert.Contains("Explorer.Plugin.GoogleDrive", csproj);
        Assert.Contains("Explorer.Plugin.Nextcloud", csproj);
        Assert.Contains("Explorer.Indexing", csproj);
    }

    [Fact]
    public void Presentation_may_reference_plugin_abstractions_not_implementations()
    {
        var csproj = File.ReadAllText(Path.Combine(RepoRoot(), "src", "Explorer.Presentation", "Explorer.Presentation.csproj"));
        Assert.Contains("Explorer.Plugin.Abstractions", csproj);
        Assert.DoesNotContain("Explorer.Plugin.OneDrive", csproj);
        Assert.DoesNotContain("Explorer.Plugin.GoogleDrive", csproj);
        Assert.DoesNotContain("Explorer.Plugin.Nextcloud", csproj);
    }

    private static string RepoRoot()
    {
        var dir = new DirectoryInfo(AppContext.BaseDirectory);
        while (dir is not null)
        {
            if (File.Exists(Path.Combine(dir.FullName, "Explorer.slnx")))
            {
                return dir.FullName;
            }

            dir = dir.Parent;
        }

        throw new InvalidOperationException("Could not find Explorer.slnx above " + AppContext.BaseDirectory);
    }
}