//
//  TrailingTooltipLabel.swift
//  VDS
//
//  Created by Matt Bruce on 4/14/23.
//

import Foundation
import UIKit
import Combine

@objc(VDSTrailingTooltipLabel)
open class TrailingTooltipLabel: View, TooltipLaunchable {
    
    //--------------------------------------------------
    // MARK: - Private Properties
    //--------------------------------------------------
    private let tooltipAction = PassthroughSubject<Void, Never>()
    private var tooltipModel: TooltipModel {
        .init(surface: surface, closeButtonText: tooltipCloseButtonText, title: tooltipTitle, child: tooltipChild)
    }
    //--------------------------------------------------
    // MARK: - Public Properties
    //--------------------------------------------------
    open var label = Label()
    
    open var labelText: String? { didSet { setNeedsUpdate() }}
    
    open var labelAttributes: [any LabelAttributeModel]? { didSet { setNeedsUpdate() } }
    
    open var labelTextStyle: TextStyle = .defaultStyle { didSet { setNeedsUpdate() } }
    
    open var labelTextPosition: TextPosition = .left { didSet { setNeedsUpdate() } }
    
    public lazy var textColorConfiguration: AnyColorable = {
        label.textColorConfiguration
    }() { didSet { setNeedsUpdate() }}
    
    open var tooltipCloseButtonText: String = "Close" { didSet { setNeedsUpdate() } }
    
    open var tooltipTitle: String? { didSet { setNeedsUpdate() } }
    
    open var tooltipChild: Any? { didSet { setNeedsUpdate() } }
    

    //--------------------------------------------------
    // MARK: - Overrides
    //--------------------------------------------------
    open override func setup() {
        super.setup()
        
        addSubview(label)
        label.pinToSuperView()
        
        //create the tooltip click event
        tooltipAction.sink { [weak self] in
            guard let self else { return }
            self.presentTooltip(tooltip: tooltipModel)
        }.store(in: &subscribers)
    }
    
    open override func updateView() {
        super.updateView()

        label.text = labelText
        label.textStyle = labelTextStyle
        label.textPosition = labelTextPosition
        label.attributes = labelAttributes
        label.surface = surface
        label.disabled = disabled
        
        //add tooltip
        label.addTooltip(model: tooltipModel)
    }
    
    open override func reset() {
        super.reset()
        shouldUpdateView = false
        labelText = nil
        labelAttributes = nil
        labelTextStyle = .defaultStyle
        labelTextPosition = .left
        tooltipCloseButtonText = "Close"
        tooltipTitle = ""
        tooltipChild = nil
        shouldUpdateView = true
        setNeedsUpdate()
    }
}


extension Label {
    
    public func addTooltip(model: TooltipModel) {
        
        var newAttributes: [any LabelAttributeModel] = []
        if let attributes {
            attributes.forEach { attribute in
                if type(of: attribute) != TooltipLabelAttribute.self {
                    newAttributes.append(attribute)
                }
            }
        }
        
        if let text = text, !text.isEmpty {
            let tooltip = TooltipLabelAttribute(surface: surface,
                                                closeButtonText: model.closeButtonText,
                                                title: model.title,
                                                child: model.child)
            newAttributes.append(tooltip)
        }
        
        if !newAttributes.isEmpty {
            attributes = newAttributes
        }
    }
}