using VoiceCat.Interop;

namespace VoiceCat.App.Forms;

/// <summary>
/// Per-remote-user gain, mute, and noise reduction settings.
/// Changes are applied in real-time as the user adjusts controls — no OK/Cancel round-trip
/// for gain and mute (the close button just dismisses). The settings live in the core and
/// are not persisted across sessions.
/// </summary>
public sealed class PerUserTuningDialog : Form
{
    private readonly VoiceCatClient _client;
    private readonly uint _userId;

    private readonly TrackBar _trkGain;
    private readonly Label _lblGainValue;
    private readonly CheckBox _chkMute;
    private readonly CheckBox _chkNr;

    public PerUserTuningDialog(VoiceCatClient client, uint userId, string nickname)
    {
        _client = client;
        _userId = userId;

        // ── Controls ──────────────────────────────────────────────────────────
        var lblTitle = new Label
        {
            Text = $"Settings for {nickname}",
            AutoSize = true,
            Font = new Font(Font, FontStyle.Bold),
            Location = new Point(12, 12),
            TabIndex = 0,
        };

        var lblGainLabel = new Label
        {
            Text = "&Gain:",
            AutoSize = true,
            Location = new Point(12, 46),
            TabIndex = 1,
        };

        _trkGain = new TrackBar
        {
            AccessibleName = "Gain",
            AccessibleDescription = "Volume level for this user. 100 is normal (1.0×), 200 is double.",
            Location = new Point(55, 38),
            Size = new Size(220, 45),
            Minimum = 0,
            Maximum = 200,
            Value = 100,
            TickFrequency = 25,
            SmallChange = 5,
            LargeChange = 25,
            TabIndex = 2,
        };

        _lblGainValue = new Label
        {
            Text = "100% (1.0×)",
            AutoSize = true,
            Location = new Point(280, 46),
            TabIndex = 3,
        };

        _chkMute = new CheckBox
        {
            Text = "&Mute this user",
            AutoSize = true,
            Location = new Point(12, 92),
            TabIndex = 4,
        };

        _chkNr = new CheckBox
        {
            Text = "&Noise reduction (planned — currently passthrough)",
            AutoSize = true,
            Location = new Point(12, 118),
            TabIndex = 5,
        };

        var btnClose = new Button
        {
            Text = "&Close",
            DialogResult = DialogResult.OK,
            Location = new Point(296, 152),
            Size = new Size(75, 27),
            TabIndex = 6,
        };

        // ── Wire events ───────────────────────────────────────────────────────
        _trkGain.Scroll += (_, _) =>
        {
            float gain = _trkGain.Value / 100f;
            _lblGainValue.Text = $"{_trkGain.Value}% ({gain:F1}×)";
            ApplySettings();
        };
        _chkMute.CheckedChanged += (_, _) => ApplySettings();
        _chkNr.CheckedChanged += (_, _) => ApplySettings();

        // ── Form ──────────────────────────────────────────────────────────────
        AcceptButton = btnClose;
        AutoScaleMode = AutoScaleMode.Font;
        ClientSize = new Size(384, 192);
        Controls.AddRange([lblTitle, lblGainLabel, _trkGain, _lblGainValue,
                           _chkMute, _chkNr, btnClose]);
        FormBorderStyle = FormBorderStyle.FixedDialog;
        MaximizeBox = false;
        MinimizeBox = false;
        StartPosition = FormStartPosition.CenterParent;
        Text = $"User settings — {nickname}";
    }

    private void ApplySettings()
    {
        float gain = _trkGain.Value / 100f;
        bool muted = _chkMute.Checked;
        bool nr = _chkNr.Checked;
        // Apply to all of this user's streams
        var streams = _client.ListUserStreams(_userId);
        foreach (var s in streams)
            _client.SetRemoteStream(_userId, s.StreamId, gain, muted, nr);
    }
}