//
//  TableCellItem.swift
//  VDS
//
//  Created by Nadigadda, Sumanth on 25/04/24.
//

import Foundation
import UIKit
import VDSCoreTokens

final class TableCellItem: UICollectionViewCell {
    
    /// Identifier for TableCellItem
    static let Identifier: String = String(describing: TableCellItem.self)
    
    //--------------------------------------------------
    // MARK: - Private Properties
    //--------------------------------------------------
    
    /// Main view which holds the content of the cell
    private let containerView = View()
    
    /// Line seperator for cell
    private let separator: Line = Line()
    
    /// Color configuration for default background color
    private let backgroundColorConfiguration = SurfaceColorConfiguration(VDSColor.backgroundPrimaryLight, VDSColor.backgroundPrimaryDark)
    
    /// Color configuration for striped background color
    private let stripedColorConfiguration = SurfaceColorConfiguration(VDSColor.backgroundSecondaryLight, VDSColor.backgroundSecondaryDark)
    
    /// Padding parameter to maintain the edge spacing of the containerView
    private var padding: Table.Padding = .standard
    
    //--------------------------------------------------
    // MARK: - Initializers
    //--------------------------------------------------
    override init(frame: CGRect) {
        super.init(frame: frame)
        setupCell()
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        setupCell()
    }
    
    private func setupCell() {
        contentView.backgroundColor = .clear
        
        addSubview(containerView)
        containerView.pinToSuperView()
    }
    
    //--------------------------------------------------
    // MARK: - Public Methods
    //--------------------------------------------------
    
    /// Updates the cell content with ``TableItemModel`` and styling/padding attributes from other parameters
    public func updateCell(content: TableItemModel, surface: Surface, striped: Bool = false, padding: Table.Padding = .standard, isHeader: Bool = false) {
        
        containerView.subviews.forEach({ $0.removeFromSuperview() })
        self.padding = padding
        containerView.surface = surface
        containerView.backgroundColor = striped ? stripedColorConfiguration.getColor(surface) : backgroundColorConfiguration.getColor(surface)
        
        
        containerView.addSubview(separator)
        separator.pinLeading().pinTrailing().pinBottom()
        
        separator.style = content.bottomLine ?? .primary
        separator.isHidden = content.bottomLine == nil
        separator.surface = surface
        
        guard let component = content.component else { return }
        
        containerView.addSubview(component)
        
        if var surfacedView = component as? Surfaceable {
            surfacedView.surface = surface
        }
        
        NSLayoutConstraint.activate([
            component.leadingAnchor.constraint(equalTo: containerView.leadingAnchor, constant: VDSLayout.space1X),
            containerView.trailingAnchor.constraint(greaterThanOrEqualTo: component.trailingAnchor, constant: padding.horizontalValue())
        ])

        component.topAnchor.constraint(equalTo: containerView.topAnchor, constant: padding.verticalValue()).isActive = !isHeader
        containerView.bottomAnchor.constraint(equalTo: component.bottomAnchor, constant: padding.verticalValue()).isActive = isHeader
    }
}