//
//  File.swift
//  MVMCoreUI
//
//  Created by Kevin Christiano on 1/31/20.
//  Copyright © 2020 Verizon Wireless. All rights reserved.
//

import Foundation


open class StackView: UIStackView, ModelMoleculeViewProtocol {
    //--------------------------------------------------
    // MARK: - Properties
    //--------------------------------------------------
    
    open var json: [AnyHashable: Any]?
    open var model: MoleculeModelProtocol?
    
    private var initialSetupPerformed = 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()
    }
    
    public func initialSetup() {
        if !initialSetupPerformed {
            initialSetupPerformed = true
            setupView()
        }
    }
    
    //--------------------------------------------------
    // MARK: - ModelMoleculeViewProtocol
    //--------------------------------------------------
    
    open func setWithModel(_ model: MoleculeModelProtocol?, _ delegateObject: MVMCoreUIDelegateObject?, _ additionalData: [AnyHashable: Any]?) {
        self.model = model
        if let backgroundColor = model?.backgroundColor {
            self.backgroundColor = backgroundColor.uiColor
        }
    }
    
    open class func nameForReuse(_ model: MoleculeModelProtocol?, _ delegateObject: MVMCoreUIDelegateObject?) -> String? {
        return model?.moleculeName
    }
    
    open class func estimatedHeight(forRow molecule: MoleculeModelProtocol?, delegateObject:  MVMCoreUIDelegateObject?) -> CGFloat? {
        return nil
    }
    
    open class func requiredModules(_ molecule: MoleculeModelProtocol?, delegateObject: MVMCoreUIDelegateObject?, error: AutoreleasingUnsafeMutablePointer<MVMCoreErrorObject?>?) -> [String]? {
        return nil
    }
}

// MARK:- MVMCoreViewProtocol
extension StackView: MVMCoreViewProtocol {
    
    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)
    }
}

// MARK:- MVMCoreUIMoleculeViewProtocol
extension StackView: MVMCoreUIMoleculeViewProtocol {
    
    open func setWithJSON(_ json: [AnyHashable: Any]?, delegateObject: MVMCoreUIDelegateObject?, additionalData: [AnyHashable: Any]?) {
        self.json = json
        
        if let backgroundColorString = json?.optionalStringForKey(KeyBackgroundColor) {
            backgroundColor = UIColor.mfGet(forHex: backgroundColorString)
        }
    }
    
    open func reset() {
        backgroundColor = .clear
    }
    
    open func setAsMolecule() { }
}