using UnityEngine;
using UnityEngine.UIElements;
using System.Collections.Generic;

namespace UI
{
    public class SettingsController : MonoBehaviour
    {
        private VisualElement _contentGeneral;
        private VisualElement _contentGraphics;
        private VisualElement _contentAudio;
        private VisualElement _contentControls;

        private Button _tabGeneral;
        private Button _tabGraphics;
        private Button _tabAudio;
        private Button _tabControls;

        private void OnEnable()
        {
            var root = GetComponent<UIDocument>().rootVisualElement;

            // Tabs
            _tabGeneral = root.Q<Button>("tab-general");
            _tabGraphics = root.Q<Button>("tab-graphics");
            _tabAudio = root.Q<Button>("tab-audio");
            _tabControls = root.Q<Button>("tab-controls");

            // Content
            _contentGeneral = root.Q<VisualElement>("content-general");
            _contentGraphics = root.Q<VisualElement>("content-graphics");
            _contentAudio = root.Q<VisualElement>("content-audio");
            _contentControls = root.Q<VisualElement>("content-controls");

            // Register Tab Events
            _tabGeneral?.RegisterCallback<ClickEvent>(evt => SwitchTab(_contentGeneral, _tabGeneral));
            _tabGraphics?.RegisterCallback<ClickEvent>(evt => SwitchTab(_contentGraphics, _tabGraphics));
            _tabAudio?.RegisterCallback<ClickEvent>(evt => SwitchTab(_contentAudio, _tabAudio));
            _tabControls?.RegisterCallback<ClickEvent>(evt => SwitchTab(_contentControls, _tabControls));

            // Close
            root.Q<Button>("btn-close")?.RegisterCallback<ClickEvent>(evt => UIManager.Instance.ToggleSettings());
        }

        private void SwitchTab(VisualElement targetContent, Button targetTab)
        {
            // Hide all
            _contentGeneral.style.display = DisplayStyle.None;
            if(_contentGraphics != null) _contentGraphics.style.display = DisplayStyle.None;
            if(_contentAudio != null) _contentAudio.style.display = DisplayStyle.None;
            if(_contentControls != null) _contentControls.style.display = DisplayStyle.None;

            _tabGeneral.RemoveFromClassList("active-tab");
            _tabGraphics.RemoveFromClassList("active-tab");
            _tabAudio.RemoveFromClassList("active-tab");
            _tabControls.RemoveFromClassList("active-tab");

            // Show target
            targetContent.style.display = DisplayStyle.Flex;
            targetTab.AddToClassList("active-tab");
        }
    }
}