//
//  GenericMolecule.swift
//  JSONCreator
//
//  Created by Matt Bruce on 10/11/22.
//  Copyright © 2022 Verizon Wireless. All rights reserved.
//

import Foundation
import MVMCore
import MVMCoreUI
import UIKit
import VDS

open class GenericMolecule<MoleculeModelType: MoleculeModelProtocol>:  UIView, MoleculeViewProtocol, MVMCoreViewProtocol, ViewMaskingProtocol {
    
    //--------------------------------------------------
    // MARK: - Properties
    //--------------------------------------------------
    public var model: MoleculeModelType!
    public var delegateObject: MVMCoreUIDelegateObject?
    public var additionalData: [AnyHashable: Any]?

    private var initialSetupPerformed = false

    public var shouldMaskWhileRecording: Bool {
        return model?.shouldMaskRecordedView ?? false
    }
    
    //--------------------------------------------------
    // MARK: - Initialization
    //--------------------------------------------------
    
    public override init(frame: CGRect) {
        super.init(frame: .zero)
        initialSetup()
    }
    
    public convenience init() {
        self.init(frame: .zero)
    }
    
    public required init?(coder: NSCoder) {
        super.init(coder: coder)
        initialSetup()
    }
    
    open func initialSetup() {
        if !initialSetupPerformed {
            initialSetupPerformed = true
            setupView()
        }
    }
    
    public required init(model: MoleculeModelProtocol, _ delegateObject: MVMCoreUIDelegateObject?, _ additionalData: [AnyHashable: Any]?) {
        super.init(frame: .zero)
        guard let casted = model as? MoleculeModelType else {
            fatalError("Wrong MoleculeModel sent to \(self). Expected: \(MoleculeModelType.self) but received: \(type(of: model).self)")
        }
        self.model = casted
        initialSetup()
        set(with: model, delegateObject, additionalData)
    }
    
    //--------------------------------------------------
    // MARK: - MoleculeViewProtocol
    //--------------------------------------------------
    
    open func set(with model: MoleculeModelProtocol, _ delegateObject: MVMCoreUIDelegateObject?, _ additionalData: [AnyHashable: Any]?) {
        guard let castedModel = model as? MoleculeModelType else { return }
        self.model = castedModel
        self.delegateObject = delegateObject
        self.additionalData = additionalData
        viewModelUpdate(model: castedModel)
    }
    
    open func viewModelUpdate(model: MoleculeModelType) { }
    
    open func reset() {
        backgroundColor = .clear
    }
    
    // MARK: Overridables
    // Base classes need to implement these functions otherwise swift won't respect the subclass functions and use the ones in the protocol extension instead.
    open class func nameForReuse(with model: MoleculeModelProtocol, _ delegateObject: MVMCoreUIDelegateObject?) -> String? {
        model.moleculeName
    }
    
    open class func estimatedHeight(with model: MoleculeModelProtocol, _ delegateObject:  MVMCoreUIDelegateObject?) -> CGFloat? { nil }
    
    open class func requiredModules(with model: MoleculeModelProtocol, _ delegateObject: MVMCoreUIDelegateObject?, error: AutoreleasingUnsafeMutablePointer<MVMCoreErrorObject?>?) -> [String]? { nil }
    
    open func updateView(_ size: CGFloat) { }
    
    /// Will be called only once.
    open func setupView() {
        translatesAutoresizingMaskIntoConstraints = false
        insetsLayoutMarginsFromSafeArea = false
        MVMCoreUIUtility.setMarginsFor(self, leading: 0, top: 0, trailing: 0, bottom: 0)
    }
    
}