using Foundation;
using VoiceCat.Audio;

namespace VoiceCat.iOS;

internal sealed class IosSettings
{
    private readonly NSUserDefaults values = NSUserDefaults.StandardUserDefaults;

    internal AudioInputMode InputMode { get; set; } = AudioInputMode.VoiceActivation;
    internal float VadThreshold { get; set; } = 0.025f;
    internal float InputGain { get; set; } = 1f;
    internal float OutputGain { get; set; } = 1f;
    internal bool InputNoiseReduction { get; set; }
    internal bool EventSounds { get; set; } = true;
    internal bool SpokenEvents { get; set; }
    internal float EventVolume { get; set; } = 1f;
    internal bool SelfTalkSounds { get; set; }
    internal bool PushToTalkSound { get; set; }
    internal int AudioBufferMilliseconds { get; set; } = 40;

    internal void Load()
    {
        NSString[] keys = [(NSString)"voice.inputMode", (NSString)"voice.vadThreshold", (NSString)"voice.inputGain",
            (NSString)"voice.outputGain", (NSString)"voice.audioBufferMs", (NSString)"feedback.sounds", (NSString)"feedback.volume"];
        NSObject[] defaults = [NSNumber.FromInt32((int)AudioInputMode.VoiceActivation), NSNumber.FromFloat(0.025f),
            NSNumber.FromFloat(1f), NSNumber.FromFloat(1f), NSNumber.FromInt32(40), NSNumber.FromBoolean(true), NSNumber.FromFloat(1f)];
        values.RegisterDefaults(new NSDictionary<NSString, NSObject>(keys, defaults));
        int inputMode = checked((int)values.IntForKey("voice.inputMode"));
        InputMode = Enum.IsDefined(typeof(AudioInputMode), inputMode) ? (AudioInputMode)inputMode : AudioInputMode.VoiceActivation;
        VadThreshold = Math.Clamp(values.FloatForKey("voice.vadThreshold"), 0.001f, 0.1f);
        InputGain = Math.Clamp(values.FloatForKey("voice.inputGain"), 0f, 4f);
        OutputGain = Math.Clamp(values.FloatForKey("voice.outputGain"), 0f, 1f);
        InputNoiseReduction = values.BoolForKey("voice.inputNoiseReduction");
        int audioBuffer = checked((int)values.IntForKey("voice.audioBufferMs")); AudioBufferMilliseconds = audioBuffer is 20 or 40 or 60 ? audioBuffer : 40;
        EventSounds = values.BoolForKey("feedback.sounds");
        SpokenEvents = values.BoolForKey("feedback.speech");
        EventVolume = Math.Clamp(values.FloatForKey("feedback.volume"), 0f, 1f);
        SelfTalkSounds = values.BoolForKey("feedback.selfTalk");
        PushToTalkSound = values.BoolForKey("feedback.ptt");
    }

    internal void Save()
    {
        values.SetInt((int)InputMode, "voice.inputMode"); values.SetFloat(VadThreshold, "voice.vadThreshold");
        values.SetFloat(InputGain, "voice.inputGain"); values.SetFloat(OutputGain, "voice.outputGain");
        values.SetInt(AudioBufferMilliseconds, "voice.audioBufferMs");
        values.SetBool(InputNoiseReduction, "voice.inputNoiseReduction"); values.SetBool(EventSounds, "feedback.sounds");
        values.SetBool(SpokenEvents, "feedback.speech"); values.SetFloat(EventVolume, "feedback.volume");
        values.SetBool(SelfTalkSounds, "feedback.selfTalk"); values.SetBool(PushToTalkSound, "feedback.ptt"); values.Synchronize();
    }
}