using System;
using NUnit.Framework;

namespace SpotifyAPI.Web.Tests
{
  [TestFixture]
  public class ProxyConfigTest
  {
    #region GetUri

    [Test]
    public void GetUri_HostNameWithScheme()
    {
      ProxyConfig config = new ProxyConfig { Host = "https://test-host.com" };
      CheckUri(config.GetUri(), "https", "test-host.com", 80);
    }

    [Test]
    public void GetUri_HostNameWithoutScheme()
    {
      ProxyConfig config = new ProxyConfig { Host = "test-host.com" };
      CheckUri(config.GetUri(), "http", "test-host.com", 80);
    }

    [Test]
    public void GetUri_HostNameWithSchemeAndPort()
    {
      ProxyConfig config = new ProxyConfig
      {
        Host = "https://test-host.com",
        Port = 8080
      };
      CheckUri(config.GetUri(), "https", "test-host.com", 8080);
    }

    [Test]
    public void GetUri_HostAddressWithScheme()
    {
      ProxyConfig config = new ProxyConfig { Host = "https://192.168.0.1" };
      CheckUri(config.GetUri(), "https", "192.168.0.1", 80);
    }

    [Test]
    public void GetUri_HostAddressWithoutScheme()
    {
      ProxyConfig config = new ProxyConfig { Host = "192.168.0.1" };
      CheckUri(config.GetUri(), "http", "192.168.0.1", 80);
    }

    [Test]
    public void GetUri_HostAddressWithSchemeAndPort()
    {
      ProxyConfig config = new ProxyConfig
      {
        Host = "https://192.168.0.1",
        Port = 8080
      };
      CheckUri(config.GetUri(), "https", "192.168.0.1", 8080);
    }

    [Test]
    public void GetUri_NullHost()
    {
      ProxyConfig config = new ProxyConfig { Host = null };
      Assert.Throws<ArgumentNullException>(() => config.GetUri());
    }

    [Test]
    public void GetUri_EmptyHost()
    {
      ProxyConfig config = new ProxyConfig { Host = string.Empty };
      Assert.Throws<UriFormatException>(() => config.GetUri());
    }

    [Test]
    public void GetUri_NegativePort()
    {
      ProxyConfig config = new ProxyConfig
      {
        Host = "test-host.com",
        Port = -10
      };
      Assert.Throws<ArgumentOutOfRangeException>(() => config.GetUri());
    }

    #endregion GetUri

    [Test]
    public void Set_Null()
    {
      ProxyConfig config = new ProxyConfig
      {
        Host = "https://test-host.com",
        Port = 1234,
        Username = "admin",
        Password = "password",
        BypassProxyOnLocal = true
      };
      config.Set(null);

      Assert.NotNull(config);
      Assert.Null(config.Host);
      Assert.AreEqual(80, config.Port);
      Assert.Null(config.Username);
      Assert.Null(config.Password);
      Assert.False(config.BypassProxyOnLocal);
    }

    private static void CheckUri(Uri uri, string expectedScheme, string expectedHost, int expectedPort)
    {
      Assert.AreEqual(expectedScheme, uri.Scheme);
      Assert.AreEqual(expectedHost, uri.Host);
      Assert.AreEqual(expectedPort, uri.Port);
    }
  }
}