using System.IO;
using System.Reflection;
using System.Runtime.Loader;
using Azaion.Suite.Services.DTO;
using Microsoft.Extensions.Options;

namespace Azaion.Suite;

public class DynamicAssemblyLoader(IOptions<LocalFilesConfig> localFilesConfig) : AssemblyLoadContext
{
    private static readonly Dictionary<string?, Assembly> LoadedAssemblies = new();

    static DynamicAssemblyLoader()
    {
        LoadedAssemblies = Default.Assemblies.ToDictionary(a => a.GetName().Name, a => a);
    }

    protected override Assembly Load(AssemblyName assemblyName)
    {
        var assembly = LoadedAssemblies.GetValueOrDefault(assemblyName.Name);
        if (assembly != null)
            return assembly;

        var currentLocation = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)!;

        var asm = Assembly.LoadFile(Path.Combine(currentLocation, localFilesConfig.Value.DllPath, $"{assemblyName.Name!}.dll"));
        return asm;
    }
}