//
//  BreadcrumbCellItem.swift
//  VDS
//
//  Created by Kanamarlapudi, Vasavi on 11/03/24.
//

import UIKit
import VDSTokens

///This is customised view for Breadcrumb cell item
final class BreadcrumbCellItem: UICollectionViewCell {
    
    ///Identifier for the BreadcrumbCellItem
    static let identifier: String = String(describing: BreadcrumbCellItem.self)
    
    //--------------------------------------------------
    // MARK: - Private Properties
    //--------------------------------------------------
    internal var stackView: UIStackView = {
        return UIStackView().with {
            $0.translatesAutoresizingMaskIntoConstraints = false
            $0.axis = .horizontal
            $0.distribution = .fill
            $0.alignment = .fill
            $0.spacing = VDSLayout.space1X
            $0.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
            $0.setContentHuggingPriority(.defaultHigh, for: .horizontal)
        }
    }()
    
    internal var breadCrumbItem: BreadcrumbItem?
    
    ///separator label
    private var separator: Label = Label().with {
        $0.translatesAutoresizingMaskIntoConstraints = false
        $0.textAlignment = .left
        $0.numberOfLines = 1
        $0.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
        $0.setContentHuggingPriority(.defaultHigh, for: .horizontal)
        $0.text = "/"
    }
    
    private let textColorConfiguration = SurfaceColorConfiguration(VDSColor.elementsPrimaryOnlight, VDSColor.elementsPrimaryOndark)
   
    //--------------------------------------------------
    // MARK: - Initializers
    //--------------------------------------------------
    override init(frame: CGRect) {
        super.init(frame: frame)
        setUp()
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        setUp()
    }
    
    ///Configuring the cell with default setup
    private func setUp() {
        separator.textColorConfiguration = textColorConfiguration.eraseToAnyColorable()
        contentView.addSubview(stackView)
        stackView.pinToSuperView()
        separator.backgroundColor = .clear
    }
    
    ///Updating the breadCrumbItem and UI based on the selected flag along with the surface
    func update(surface: Surface, hideSlash: Bool, breadCrumbItem: BreadcrumbItem) {
        //update surface
        separator.surface = surface
        breadCrumbItem.surface = surface
        breadCrumbItem.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
        breadCrumbItem.setContentHuggingPriority(.defaultLow, for: .horizontal)

        //remove previous views
        stackView.arrangedSubviews.forEach { $0.removeFromSuperview() }
        
        //add to stack
        stackView.addArrangedSubview(separator)
        stackView.addArrangedSubview(breadCrumbItem)
        stackView.setCustomSpacing(VDSLayout.space1X, after: separator)
        
        //update separator
        separator.textColor = textColorConfiguration.getColor(surface)
        separator.isHidden = hideSlash
        self.breadCrumbItem = breadCrumbItem
        layoutIfNeeded()
    }
}