using AdOrbitSDK;
using StalwartSimpleLoginMiddleware.Constants;

namespace StalwartSimpleLoginMiddleware.Services;

public class StalwartClient() : IDisposable
{
    private Client _userClient;

    private static HttpClient HttpClient => new()
    {
        BaseAddress = new Uri(Environment.GetEnvironmentVariable(EnvironmentVariable.MailServerUri) + "/api/")
    };

    public async Task<Client> GetClient()
    {
        if (_userClient != null) return _userClient;

        return GetClient(Environment.GetEnvironmentVariable(EnvironmentVariable.MailServerApiKey) ?? string.Empty);
    }

    private Client GetClient(string apiKey)
    {
        if (_userClient != null) return _userClient;

        if (string.IsNullOrEmpty(HttpClient.BaseAddress?.AbsoluteUri))
            throw new NullReferenceException($"{EnvironmentVariable.MailServerUri} is missing in environment.");

        if (string.IsNullOrEmpty(apiKey))
            throw new NullReferenceException($"{EnvironmentVariable.MailServerApiKey} is missing in environment.");

        _userClient = new Client(HttpClient, apiKey);
        return _userClient;
    }

    public void Dispose()
    {
        HttpClient.Dispose();
        GC.SuppressFinalize(this);
    }
}