namespace LmxFakeProxy.Tests;

using LmxFakeProxy.Sessions;

public class SessionManagerTests
{
    [Fact]
    public void Connect_ReturnsUniqueSessionId()
    {
        var mgr = new SessionManager(null);
        var (ok1, _, id1) = mgr.Connect("client1", "");
        var (ok2, _, id2) = mgr.Connect("client2", "");
        Assert.True(ok1);
        Assert.True(ok2);
        Assert.NotEqual(id1, id2);
    }

    [Fact]
    public void Connect_WithValidApiKey_Succeeds()
    {
        var mgr = new SessionManager("secret");
        var (ok, _, _) = mgr.Connect("client1", "secret");
        Assert.True(ok);
    }

    [Fact]
    public void Connect_WithInvalidApiKey_Fails()
    {
        var mgr = new SessionManager("secret");
        var (ok, msg, id) = mgr.Connect("client1", "wrong");
        Assert.False(ok);
        Assert.Empty(id);
        Assert.Contains("Invalid API key", msg);
    }

    [Fact]
    public void Connect_WithNoKeyConfigured_AcceptsAnyKey()
    {
        var mgr = new SessionManager(null);
        var (ok1, _, _) = mgr.Connect("c1", "anykey");
        var (ok2, _, _) = mgr.Connect("c2", "");
        Assert.True(ok1);
        Assert.True(ok2);
    }

    [Fact]
    public void Disconnect_RemovesSession()
    {
        var mgr = new SessionManager(null);
        var (_, _, id) = mgr.Connect("client1", "");
        Assert.True(mgr.ValidateSession(id));
        var ok = mgr.Disconnect(id);
        Assert.True(ok);
        Assert.False(mgr.ValidateSession(id));
    }

    [Fact]
    public void Disconnect_UnknownSession_ReturnsFalse()
    {
        var mgr = new SessionManager(null);
        Assert.False(mgr.Disconnect("nonexistent"));
    }

    [Fact]
    public void ValidateSession_ValidId_ReturnsTrue()
    {
        var mgr = new SessionManager(null);
        var (_, _, id) = mgr.Connect("client1", "");
        Assert.True(mgr.ValidateSession(id));
    }

    [Fact]
    public void ValidateSession_InvalidId_ReturnsFalse()
    {
        var mgr = new SessionManager(null);
        Assert.False(mgr.ValidateSession("bogus"));
    }

    [Fact]
    public void GetConnectionState_ReturnsCorrectInfo()
    {
        var mgr = new SessionManager(null);
        var (_, _, id) = mgr.Connect("myClient", "");
        var (found, clientId, ticks) = mgr.GetConnectionState(id);
        Assert.True(found);
        Assert.Equal("myClient", clientId);
        Assert.True(ticks > 0);
    }

    [Fact]
    public void GetConnectionState_UnknownSession_ReturnsNotConnected()
    {
        var mgr = new SessionManager(null);
        var (found, clientId, ticks) = mgr.GetConnectionState("unknown");
        Assert.False(found);
        Assert.Empty(clientId);
        Assert.Equal(0, ticks);
    }

    [Fact]
    public void CheckApiKey_NoKeyConfigured_AlwaysValid()
    {
        var mgr = new SessionManager(null);
        Assert.True(mgr.CheckApiKey("anything"));
        Assert.True(mgr.CheckApiKey(""));
    }

    [Fact]
    public void CheckApiKey_WithKeyConfigured_ValidatesCorrectly()
    {
        var mgr = new SessionManager("mykey");
        Assert.True(mgr.CheckApiKey("mykey"));
        Assert.False(mgr.CheckApiKey("wrong"));
        Assert.False(mgr.CheckApiKey(""));
    }
}