//
//  Tilet.swift
//  VDS
//
//  Created by Matt Bruce on 12/19/22.
//

import Foundation
import Foundation
import VDSColorTokens
import UIKit

@objc(VDSTilet)
open class Tilet: TileContainer {
    
    public enum TextPosition {
        case top
        case bottom
    }
    
    //--------------------------------------------------
    // MARK: - Initializers
    //--------------------------------------------------
    required public init() {
        super.init(frame: .zero)
        initialSetup()
    }
    
    public override init(frame: CGRect) {
        super.init(frame: .zero)
        initialSetup()
    }
    
    public required init?(coder: NSCoder) {
        super.init(coder: coder)
        initialSetup()
    }
    //--------------------------------------------------
    // MARK: - Private Properties
    //--------------------------------------------------
    private var stackView = UIStackView().with {
        $0.translatesAutoresizingMaskIntoConstraints = false
        $0.axis = .vertical
        $0.distribution = .fill
        $0.spacing = 5
    }
    
    private var titleLockupContainerView = UIView().with {
        $0.translatesAutoresizingMaskIntoConstraints = false
    }
    
    private var titleLockup = TitleLockup().with {
        let configs = [
            TypographicalStyleDeviceSpacingConfig([.TitleSmall, .BoldTitleSmall],
                                                  neighboring: [
                                                    .BodySmall, .BoldBodySmall,
                                                    .BodyMedium, .BoldBodyMedium
                                                  ],
                                                  spacing: 8.0,
                                                  deviceType: .iPhone),
            
            TypographicalStyleDeviceSpacingConfig([.TitleMedium, .BoldTitleMedium,
                                                   .TitleLarge, .BoldTitleLarge],
                                                  neighboring: [
                                                    .BodySmall, .BoldBodySmall,
                                                    .BodyMedium, .BoldBodyMedium,
                                                    .BodyLarge, .BoldBodyLarge],
                                                  spacing: 8.0,
                                                  deviceType: .iPhone),
            
            TypographicalStyleDeviceSpacingConfig([.TitleXLarge, .BoldTitleXLarge],
                                                  neighboring: [
                                                    .BodySmall, .BoldBodySmall,
                                                    .BodyMedium, .BoldBodyMedium,
                                                    .BodyLarge, .BoldBodyLarge,
                                                    .TitleMedium, .BoldTitleMedium
                                                  ],
                                                  spacing: 12.0,
                                                  deviceType: .iPhone),
            
            TypographicalStyleDeviceSpacingConfig([.TitleSmall, .BoldTitleSmall,
                                                   .TitleMedium, .BoldTitleMedium],
                                                  neighboring: [
                                                    .BodySmall, .BoldBodySmall,
                                                    .BodyMedium, .BoldBodyMedium,
                                                    .BodyLarge, .BoldBodyLarge
                                                  ],
                                                  spacing: 8.0,
                                                  deviceType: .iPad),
            
            TypographicalStyleDeviceSpacingConfig([.TitleLarge, .BoldTitleLarge],
                                                  neighboring: [
                                                    .BodySmall, .BoldBodySmall,
                                                    .BodyMedium, .BoldBodyMedium,
                                                    .BodyLarge, .BoldBodyLarge,
                                                    .TitleSmall, .BoldTitleSmall
                                                  ],
                                                  spacing: 12.0,
                                                  deviceType: .iPad),
            
            TypographicalStyleDeviceSpacingConfig([.TitleXLarge, .BoldTitleXLarge],
                                                  neighboring: [
                                                    .BodyLarge, .BoldBodyLarge,
                                                    .TitleMedium, .BoldTitleMedium
                                                  ],
                                                  spacing: 16.0,
                                                  deviceType: .iPad)
            
        ]
        
        $0.bottomTypographicalStyleSpacingConfig = TypographicalStyleSpacingConfig(configs: configs)
    }
    
    private var badgeContainerView = UIView().with {
        $0.translatesAutoresizingMaskIntoConstraints = false
    }
    
    private var badge = Badge().with {
        $0.fillColor = .red
    }
    
    private let iconContainerView = UIView().with {
        $0.translatesAutoresizingMaskIntoConstraints = false
        $0.backgroundColor = .clear
    }
    
    private var descriptiveIcon = Icon()
    private var directionalIcon = Icon().with {
        $0.name = .rightArrow
    }
    
    //--------------------------------------------------
    // MARK: - Public Properties
    //--------------------------------------------------
    //style
    private var _textWidth: CGFloat?
    open var textWidth: CGFloat? {
        get { _textWidth }
        set {
            if let newValue, newValue > 44.0 && newValue <= width {
                _textWidth = newValue
                if _textPercentage != nil {
                    _textPercentage = nil
                }
            } else {
                _textWidth = nil
            }
            didChange()
        }
        
    }
    
    private var _textPercentage: CGFloat?
    open var textPercentage: CGFloat? {
        get { _textPercentage }
        set {
            if let newValue, newValue >= 5 && newValue <= 100.0 {
                _textPercentage = newValue
                if textWidth != nil {
                    _textWidth = nil
                }
            } else {
                _textPercentage = nil
            }
            didChange()
        }
    }
    
    open var textPostion: TextPosition = .top { didSet { didChange() }}
    
    //models
    public var badgeModel: TiletBadgeModel? { didSet { didChange() }}
    public var titleModel: TiletTitleModel? { didSet { didChange() }}
    public var subTitleModel: TiletSubTitleModel? { didSet { didChange() }}
    
    //only 1 Icon can be active
    private var _descriptiveIconModel: TiletDescriptiveIcon?
    public var descriptiveIconModel: TiletDescriptiveIcon? {
        get { _descriptiveIconModel }
        set {
            _descriptiveIconModel = newValue;
            _directionalIconModel = nil
            didChange()
        }
    }
    
    private var _directionalIconModel: TiletDirectionalIcon?
    public var directionalIconModel: TiletDirectionalIcon? {
        get { _directionalIconModel }
        set {
            _directionalIconModel = newValue;
            _descriptiveIconModel = nil
            didChange()
        }
    }
    //icons
    
    
    //--------------------------------------------------
    // MARK: - Constraints
    //--------------------------------------------------
    internal var titleLockupWidthConstraint: NSLayoutConstraint?
    internal var titleLockupTrailingConstraint: NSLayoutConstraint?
    //functions
    //--------------------------------------------------
    // MARK: - Lifecycle
    //--------------------------------------------------
    
    open override func setup() {
        super.setup()
        width = 100
        aspectRatio = .none
        containerBackgroundColor = .black
        let view = UIView().with {
            $0.translatesAutoresizingMaskIntoConstraints = false
        }
        view.addSubview(stackView)
        stackView.pinTop()
        stackView.pinLeading()
        stackView.pinTrailing()
        stackView.bottomAnchor.constraint(lessThanOrEqualTo: view.bottomAnchor).isActive = true
        addContentView(view)
        
        //badge
        badgeContainerView.addSubview(badge)
        badge
            .pinTop()
            .pinLeading()
            .pinBottom()
        badge.trailingAnchor.constraint(lessThanOrEqualTo: badgeContainerView.trailingAnchor).isActive = true
        
        titleLockupContainerView.addSubview(titleLockup)
        titleLockup
            .pinTop()
            .pinLeading()
            .pinBottom()
        titleLockupTrailingConstraint = titleLockup.trailingAnchor.constraint(equalTo: titleLockupContainerView.trailingAnchor)
        titleLockupTrailingConstraint?.isActive = true
        
        iconContainerView.addSubview(descriptiveIcon)
        iconContainerView.addSubview(directionalIcon)
        
        descriptiveIcon
            .pinLeading()
            .pinTop()
            .pinBottom()
        
        directionalIcon
            .pinTrailing()
            .pinTop()
            .pinBottom()
        
    }
    
    public override func reset() {
        super.reset()
        aspectRatio = .none
        surface = .light
        containerBackgroundColor = .black
        
        //models
        badgeModel = nil
        titleModel = nil
        subTitleModel = nil
        descriptiveIconModel = nil
        directionalIconModel = nil
    }
    
    //--------------------------------------------------
    // MARK: - State
    //--------------------------------------------------
    fileprivate func updateBadge() {
        if let badgeModel {
            badge.text = badgeModel.text
            badge.fillColor = badgeModel.fillColor
            badge.numberOfLines = badgeModel.numberOfLines
            badge.surface = badgeModel.surface
            badge.maxWidth = badgeModel.maxWidth
            if badgeContainerView.superview == nil {
                stackView.insertArrangedSubview(badgeContainerView, at: 0)
            }
        } else {
            badgeContainerView.removeFromSuperview()
        }
    }
    
    fileprivate func updateTitleLockup() {
        
        var showTitleLockup = false
        
        if let titleModel, !titleModel.text.isEmpty {
            showTitleLockup = true
        }
        
        if let subTitleModel, !subTitleModel.text.isEmpty {
            showTitleLockup = true
        }
                
        if showTitleLockup {
            //flip the surface for the titleLockup
            titleLockup.surface = containerBackgroundColor == .black ? .dark : .light
            
            //titleLockup
            if let textWidth {
                titleLockupTrailingConstraint?.isActive = false
                titleLockupWidthConstraint?.isActive = false
                titleLockupWidthConstraint = titleLockup.widthAnchor.constraint(equalToConstant: textWidth)
                titleLockupWidthConstraint?.isActive = true
                
            } else if let textPercentage {
                titleLockupTrailingConstraint?.isActive = false
                titleLockupWidthConstraint?.isActive = false
                titleLockupWidthConstraint = NSLayoutConstraint(item: titleLockup,
                                                                attribute: .width,
                                                                relatedBy: .equal,
                                                                toItem: containerView,
                                                                attribute: .width,
                                                                multiplier: textPercentage / 100,
                                                                constant: 0.0)
                titleLockupWidthConstraint?.isActive = true
                
            } else {
                titleLockupWidthConstraint?.isActive = false
                titleLockupTrailingConstraint?.isActive = true
            }
            
            //set models
            titleLockup.titleModel = titleModel?.toTitleLockupTitleModel()
            titleLockup.subTitleModel = subTitleModel?.toTitleLockupSubTitleModel()
            
            if let style = subTitleModel?.typographicalStyle.value {
                titleLockup.otherTypograpicalStyle = style
            }
            
            if titleLockupContainerView.superview == nil {
                stackView.insertArrangedSubview(titleLockupContainerView, at: badgeContainerView.superview == nil ? 0 : 1)
            }
        } else {
            titleLockupContainerView.removeFromSuperview()
        }
    }
    
    fileprivate func updateIcons() {
        //icons
        var showIconContainerView = false
        if let descriptiveIconModel {
            descriptiveIcon.name = descriptiveIconModel.name
            descriptiveIcon.size = descriptiveIconModel.size
            descriptiveIcon.surface = descriptiveIconModel.surface
            showIconContainerView = true
        }
        
        if let directionalIconModel {
            directionalIcon.size = directionalIconModel.size
            directionalIcon.surface = directionalIconModel.surface
            showIconContainerView = true
        }
        
        //iconContainer
        descriptiveIcon.isHidden = descriptiveIconModel == nil
        directionalIcon.isHidden = directionalIconModel == nil

        if showIconContainerView {
            //spacing before iconContainerView
            var view: UIView?
            if badgeContainerView.superview != nil {
                view = badgeContainerView
            }
            if titleLockupContainerView.superview != nil {
                view = titleLockupContainerView
            }
            if let view {
                stackView.setCustomSpacing(containerPadding.tiletSpacing, after: view)
            }
            if iconContainerView.superview == nil {
                stackView.addArrangedSubview(iconContainerView)
            }
        } else {
            iconContainerView.removeFromSuperview()
        }

    }
    
    open override func updateView() {
        super.updateView()
                
        updateBadge()
        updateTitleLockup()
        updateIcons()
    }
}

extension TileContainer.ContainerPadding {
    fileprivate var tiletSpacing: CGFloat {
        switch self {
        case .twelve:
            return 16
        case .sixteen:
            return 24
        case .twentyFour:
            return 32
        case .thirtyTwo:
            return 48
        case .fourtyEight:
            return 16
        }
    }
}