using System;
using Content.Shared.CCVar;
using Robust.Client.Audio.Midi;
using Robust.Client.AutoGenerated;
using Robust.Client.Graphics;
using Robust.Client.UserInterface;
using Robust.Client.UserInterface.Controls;
using Robust.Client.UserInterface.XAML;
using Robust.Shared;
using Robust.Shared.Maths;
using Robust.Shared.Configuration;
using Robust.Shared.IoC;
using Robust.Shared.Localization;

namespace Content.Client.EscapeMenu.UI.Tabs
{
    [GenerateTypedNameReferences]
    public partial class AudioTab : Control
    {
        [Dependency] private readonly IConfigurationManager _cfg = default!;
        [Dependency] private readonly IClydeAudio _clydeAudio = default!;

        public AudioTab()
        {
            RobustXamlLoader.Load(this);
            IoCManager.InjectDependencies(this);

            AmbienceCheckBox.Pressed = _cfg.GetCVar(CCVars.AmbienceBasicEnabled);
            LobbyMusicCheckBox.Pressed = _cfg.GetCVar(CCVars.LobbyMusicEnabled);

            ApplyButton.OnPressed += OnApplyButtonPressed;
            ResetButton.OnPressed += OnResetButtonPressed;
            MasterVolumeSlider.OnValueChanged += OnMasterVolumeSliderChanged;
            MidiVolumeSlider.OnValueChanged += OnMidiVolumeSliderChanged;
            AmbienceCheckBox.OnToggled += OnAmbienceCheckToggled;
            LobbyMusicCheckBox.OnToggled += OnLobbyMusicCheckToggled;

            Reset();
        }

        protected override void Dispose(bool disposing)
        {
            ApplyButton.OnPressed -= OnApplyButtonPressed;
            ResetButton.OnPressed -= OnResetButtonPressed;
            MasterVolumeSlider.OnValueChanged -= OnMasterVolumeSliderChanged;
            MidiVolumeSlider.OnValueChanged -= OnMidiVolumeSliderChanged;
            AmbienceCheckBox.OnToggled -= OnAmbienceCheckToggled;
            base.Dispose(disposing);
        }

        private void OnMasterVolumeSliderChanged(Robust.Client.UserInterface.Controls.Range range)
        {
            _clydeAudio.SetMasterVolume(MasterVolumeSlider.Value / 100);
            UpdateChanges();
        }

        private void OnMidiVolumeSliderChanged(Robust.Client.UserInterface.Controls.Range range)
        {
            UpdateChanges();
        }

        private void OnAmbienceCheckToggled(BaseButton.ButtonEventArgs args)
        {
            UpdateChanges();
        }

        private void OnLobbyMusicCheckToggled(BaseButton.ButtonEventArgs args)
        {
            UpdateChanges();
        }

        private void OnApplyButtonPressed(BaseButton.ButtonEventArgs args)
        {
            _cfg.SetCVar(CVars.AudioMasterVolume, MasterVolumeSlider.Value / 100);
            _cfg.SetCVar(CVars.MidiVolume, LV100ToDB(MidiVolumeSlider.Value));
            _cfg.SetCVar(CCVars.AmbienceBasicEnabled, AmbienceCheckBox.Pressed);
            _cfg.SetCVar(CCVars.LobbyMusicEnabled, LobbyMusicCheckBox.Pressed);
            _cfg.SaveToFile();
            UpdateChanges();
        }

        private void OnResetButtonPressed(BaseButton.ButtonEventArgs args)
        {
            Reset();
        }

        private void Reset()
        {
            MasterVolumeSlider.Value = _cfg.GetCVar(CVars.AudioMasterVolume) * 100;
            MidiVolumeSlider.Value = DBToLV100(_cfg.GetCVar(CVars.MidiVolume));
            AmbienceCheckBox.Pressed = _cfg.GetCVar(CCVars.AmbienceBasicEnabled);
            LobbyMusicCheckBox.Pressed = _cfg.GetCVar(CCVars.LobbyMusicEnabled);
            UpdateChanges();
        }

        // Note: Rather than moving these functions somewhere, instead switch MidiManager to using linear units rather than dB
        // Do be sure to rename the setting though
        private float DBToLV100(float db)
        {
            return (MathF.Pow(10, (db / 10)) * 100);
        }

        private float LV100ToDB(float lv100)
        {
            // Saving negative infinity doesn't work, so use -10000000 instead (MidiManager does it)
            return MathF.Max(-10000000, MathF.Log(lv100 / 100, 10) * 10);
        }

        private void UpdateChanges()
        {
            var isMasterVolumeSame =
                System.Math.Abs(MasterVolumeSlider.Value - _cfg.GetCVar(CVars.AudioMasterVolume) * 100) < 0.01f;
            var isMidiVolumeSame =
                System.Math.Abs(MidiVolumeSlider.Value - DBToLV100(_cfg.GetCVar(CVars.MidiVolume))) < 0.01f;
            var isAmbienceSame = AmbienceCheckBox.Pressed == _cfg.GetCVar(CCVars.AmbienceBasicEnabled);
            var isLobbySame = LobbyMusicCheckBox.Pressed == _cfg.GetCVar(CCVars.LobbyMusicEnabled);
            var isEverythingSame = isMasterVolumeSame && isMidiVolumeSame && isAmbienceSame && isLobbySame;
            ApplyButton.Disabled = isEverythingSame;
            ResetButton.Disabled = isEverythingSame;
            MasterVolumeLabel.Text =
                Loc.GetString("ui-options-volume-percent", ("volume", MasterVolumeSlider.Value / 100));
            MidiVolumeLabel.Text =
                Loc.GetString("ui-options-volume-percent", ("volume", MidiVolumeSlider.Value / 100));
        }
    }
}