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

namespace Azaion.Suite;

public interface IResourceLoader
{
    Task LoadAnnotator(string email, string password, Stream outStream, CancellationToken cancellationToken = default);
    Assembly LoadAssembly(string name, CancellationToken cancellationToken = default);
}

public class ResourceLoader(AzaionApiClient azaionApi, IHardwareService hardwareService, IOptions<LocalFilesConfig> localFilesConfig) : IResourceLoader
{
    public async Task LoadAnnotator(string email, string password, Stream outStream, CancellationToken cancellationToken = default)
    {
        var hardwareInfo = await hardwareService.GetHardware();
        azaionApi.Login(email, password);
        var key = Security.MakeEncryptionKey(email, password, hardwareInfo.Hash);

        var encryptedStream = await azaionApi.GetResource(password, hardwareInfo, ResourceEnum.AnnotatorDll);

        await encryptedStream.DecryptTo(outStream, key, cancellationToken);
        //return Assembly.Load(stream.ToArray());
    }

    public Assembly LoadAssembly(string name, CancellationToken cancellationToken = default)
    {
        var dllValues = name.Split(",");
        var dllName = $"{dllValues[0]}.dll";
        var currentLocation = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)!;

        var asm = Assembly.LoadFile(Path.Combine(currentLocation, localFilesConfig.Value.DllPath, dllName));
        return asm;
    }
}