ControllerView.swift

//
//  ControllerView.swift
//  Folium-iOS
//
//  Created by Jarrod Norwell on 4/6/2024.
//

import Foundation
import UIKit

var machine: String {
    var utsnameInstance = utsname()
    uname(&utsnameInstance)
    let optionalString: String? = withUnsafePointer(to: &utsnameInstance.machine) {
        $0.withMemoryRebound(to: CChar.self, capacity: 1) {
            ptr in String.init(validatingUTF8: ptr)
        }
    }
    return optionalString ?? "N/A"
}

class PassthroughView : UIView {
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        super.hitTest(point, with: event) == self ? nil : super.hitTest(point, with: event)
    }
}

class ControllerView : PassthroughView {
    var imageView: UIImageView? = nil
    
    var updateFramesCallback: (() -> Void)? = nil
    
    var orientation: Orientation
    var skin: Skin
    var delegates: (button: ControllerButtonDelegate?, thumbstick: ControllerThumbstickDelegate?)
    init(orientation: Orientation, skin: Skin, delegates: (button: ControllerButtonDelegate?, thumbstick: ControllerThumbstickDelegate?)) {
        self.orientation = orientation
        self.skin = skin
        self.delegates = delegates
        super.init(frame: .zero)
        
        imageView = if let backgroundImageName = orientation.backgroundImageName, let url = skin.url {
            .init(image: .init(contentsOfFile: url
                .appendingPathComponent("backgrounds", conformingTo: .folder)
                .appendingPathComponent(backgroundImageName, conformingTo: .fileURL)
                .path
            ))
        } else {
            .init()
        }
        
        guard let imageView else {
            return
        }
        
        imageView.translatesAutoresizingMaskIntoConstraints = false
        addSubview(imageView)
        
        imageView.topAnchor.constraint(equalTo: topAnchor).isActive = true
        imageView.leadingAnchor.constraint(equalTo: leadingAnchor).isActive = true
        imageView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
        imageView.trailingAnchor.constraint(equalTo: trailingAnchor).isActive = true
        
        orientation.thumbsticks.forEach { thumbstick in
            let controllerThumbstick = if let thumbstickClassName = thumbstick.thumbstickClassName,
                                          let thumbstickClass = ThumbstickClass(rawValue: thumbstickClassName) {
                switch thumbstickClass {
                case .blurredThumbstick:
                    BlurredThumbstick(thumbstick: thumbstick, skin: skin, delegate: delegates.thumbstick)
                case .defaultThumbstick:
                    DefaultThumbstick(thumbstick: thumbstick, skin: skin, delegate: delegates.thumbstick)
                }
            } else {
                DefaultThumbstick(thumbstick: thumbstick, skin: skin, delegate: delegates.thumbstick)
            }
            
            controllerThumbstick.frame = .init(x: thumbstick.x, y: thumbstick.y, width: thumbstick.width, height: thumbstick.height)
            controllerThumbstick.alpha = orientation.sharedAlpha ?? thumbstick.alpha ?? 1
            addSubview(controllerThumbstick)
        }
        
        orientation.buttons.forEach { button in
            let controllerButton = if let buttonClassName = button.buttonClassName, let buttonClass = ButtonClass(rawValue: buttonClassName) {
                switch buttonClass {
                case .blurredButton:
                    BlurredButton(button: button, skin: skin, delegate: delegates.button)
                case .borderedButton:
                    BorderedButton(button: button, skin: skin, delegate: delegates.button)
                case .defaultButton:
                    DefaultButton(button: button, skin: skin, delegate: delegates.button)
                }
            } else {
                DefaultButton(button: button, skin: skin, delegate: delegates.button)
            }
            
            controllerButton.frame = .init(x: button.x, y: button.y, width: button.width, height: button.height)
            controllerButton.alpha = orientation.sharedAlpha ?? button.alpha ?? 1
            addSubview(controllerButton)
        }
    }
    
    @MainActor required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    // TODO: letting to off the button does not
    /*override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesMoved(touches, with: event)
        touches.forEach { touch in
            guard let currentlyTouchedSubviews = subviews.filter({ $0.isKind(of: ControllerButton.classForCoder() )}) as? [ControllerButton] else {
                return
            }
    
            for button in currentlyTouchedSubviews {
                if button.frame.contains(touch.location(in: self)) {
                    button.touchDown()
                    break
                }
     
                button.touchUpInside()
            }
        }
    }*/
    
    func updateFrames(for orientation: Orientation, controllerDisconnected: Bool = true) {
        subviews.filter {
            $0.isKind(of: ControllerButton.classForCoder()) || $0.isKind(of: ControllerThumbstick.classForCoder())
        }.forEach { $0.removeFromSuperview() }
        
        self.orientation = orientation
        
        guard let imageView else {
            return
        }
        
        if let backgroundImageName = orientation.backgroundImageName, let url = skin.url {
            imageView.image = .init(contentsOfFile: url
                .appendingPathComponent("backgrounds", conformingTo: .folder)
                .appendingPathComponent(backgroundImageName, conformingTo: .fileURL)
                .path
            )
        }
        
        orientation.thumbsticks.forEach { thumbstick in
            let controllerThumbstick = if let thumbstickClassName = thumbstick.thumbstickClassName,
                                          let thumbstickClass = ThumbstickClass(rawValue: thumbstickClassName) {
                switch thumbstickClass {
                case .blurredThumbstick:
                    BlurredThumbstick(thumbstick: thumbstick, skin: skin, delegate: delegates.thumbstick)
                case .defaultThumbstick:
                    DefaultThumbstick(thumbstick: thumbstick, skin: skin, delegate: delegates.thumbstick)
                }
            } else {
                DefaultThumbstick(thumbstick: thumbstick, skin: skin, delegate: delegates.thumbstick)
            }
            
            controllerThumbstick.frame = .init(x: thumbstick.x, y: thumbstick.y, width: thumbstick.width, height: thumbstick.height)
            controllerThumbstick.alpha = orientation.sharedAlpha ?? thumbstick.alpha ?? 1
            addSubview(controllerThumbstick)
        }
        
        orientation.buttons.forEach { button in
            let controllerButton = if let buttonClassName = button.buttonClassName, let buttonClass = ButtonClass(rawValue: buttonClassName) {
                switch buttonClass {
                case .blurredButton:
                    BlurredButton(button: button, skin: skin, delegate: delegates.button)
                case .borderedButton:
                    BorderedButton(button: button, skin: skin, delegate: delegates.button)
                case .defaultButton:
                    DefaultButton(button: button, skin: skin, delegate: delegates.button)
                }
            } else {
                DefaultButton(button: button, skin: skin, delegate: delegates.button)
            }
            
            controllerButton.frame = .init(x: button.x, y: button.y, width: button.width, height: button.height)
            controllerButton.alpha = orientation.sharedAlpha ?? button.alpha ?? 1
            addSubview(controllerButton)
        }
        
#if !targetEnvironment(simulator)
        controllerDisconnected ? show() : hide()
#endif
        
        if let updateFramesCallback { updateFramesCallback() }
    }
    
    func hide() {
        UIView.transition(with: self, duration: 0.2) {
            var subs = self.subviews.filter {
                $0.isKind(of: ControllerButton.classForCoder()) || $0.isKind(of: ControllerThumbstick.classForCoder())
            }
                
            subs.removeAll(where: {
                ($0 as? ControllerButton)?.button.type == .settings
            })
            
            subs.forEach { $0.alpha = 0 }
        }
    }
    
    func show() {
        UIView.transition(with: self, duration: 0.2) {
            var subs = self.subviews.filter {
                $0.isKind(of: ControllerButton.classForCoder()) || $0.isKind(of: ControllerThumbstick.classForCoder())
            }
            
            subs.removeAll(where: {
                ($0 as? ControllerButton)?.button.type == .settings
            })
            
            subs.forEach { $0.alpha = 1 }
        }
    }
    
    func button(for buttonType: Button.`Type`) -> ControllerButton? {
        subviews.first(where: { $0.isKind(of: ControllerButton.classForCoder()) && ($0 as? ControllerButton)?.button.type == buttonType }) as? ControllerButton
    }
}