using System.Xml.Linq;
using FluentAssertions;

namespace NugetPrime.Tests;

public sealed class NugetPrimeTests
{
    [Theory]
    [InlineData("nuget-prime.csproj")]
    [InlineData("nuget-prime-v9.csproj")]
    public void PackageDownloads_ArePinned(string projectFile)
    {
        var repoRoot = FindRepoRoot();
        var path = Path.Combine(repoRoot, "devops", "tools", "nuget-prime", projectFile);
        File.Exists(path).Should().BeTrue($"expected {projectFile} under devops/tools/nuget-prime");

        var doc = XDocument.Load(path);
        var packages = doc.Descendants().Where(element => element.Name.LocalName == "PackageDownload").ToList();
        packages.Should().NotBeEmpty();

        foreach (var package in packages)
        {
            var include = package.Attribute("Include")?.Value;
            include.Should().NotBeNullOrWhiteSpace();

            var version = package.Attribute("Version")?.Value;
            version.Should().NotBeNullOrWhiteSpace();
            version.Should().NotContain("*");
        }
    }

    private static string FindRepoRoot()
    {
        var current = new DirectoryInfo(AppContext.BaseDirectory);
        for (var i = 0; i < 12 && current is not null; i++)
        {
            var candidate = Path.Combine(current.FullName, "devops", "tools", "nuget-prime", "nuget-prime.csproj");
            if (File.Exists(candidate))
            {
                return current.FullName;
            }

            current = current.Parent;
        }

        throw new DirectoryNotFoundException("Repo root not found for devops/tools/nuget-prime");
    }
}