//
//  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>()

    //--------------------------------------------------
    // MARK: - Public Properties
    //--------------------------------------------------
    open var label = Label()
    
    open var labelText: String? { didSet { didChange() }}

    open var labelAttributes: [any LabelAttributeModel]? { didSet { didChange() } }

    open var labelTextStyle: TextStyle = .defaultStyle { didSet { didChange() } }
    
    open var labelTextPosition: TextPosition = .left { didSet { didChange() } }
    
    public lazy var textColorConfiguration: AnyColorable = {
        label.textColorConfiguration
    }() { didSet { didChange() }}
    
    open var tooltipCloseButtonText: String = "Close" { didSet { didChange() } }
    
    open var tooltipSize: Tooltip.Size = .medium { didSet { didChange() } }
    
    open var tooltipTitle: String = "" { didSet { didChange() } }
    
    open var tooltipContent: String = "" { didSet { didChange() } }
    
    //--------------------------------------------------
    // 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(surface: self.surface,
                                title: self.tooltipTitle,
                                content: self.tooltipContent,
                                closeButtonText: self.tooltipCloseButtonText)
        }.store(in: &subscribers)
    }
    
    open override func updateView() {
        super.updateView()
        
        var attributes: [any LabelAttributeModel] = []
        if let labelAttributes {
            attributes.append(contentsOf: labelAttributes)
        }
        
        var updatedLabelText = labelText
        
        //add the tool tip
        if let oldText = updatedLabelText, !tooltipTitle.isEmpty, !tooltipContent.isEmpty {
            let tooltipUpdateText = "\(oldText)   "  //create a little space between the final character and tooltip image
            let frame = CGRect(x: 0, y: 0, width: tooltipSize.dimensions.width, height: tooltipSize.dimensions.width)
            let color = textColorConfiguration.getColor(self)
            let tooltipAttribute = ImageLabelAttribute(location: tooltipUpdateText.count - 2, imageName: "info", frame:  frame, tintColor: color)
            let tooltipAction = ActionLabelAttribute(location: tooltipUpdateText.count - 3, length: 3, shouldUnderline: false, action: tooltipAction)
            updatedLabelText = tooltipUpdateText
            attributes.append(tooltipAttribute)
            attributes.append(tooltipAction)
        }
        //set the titleLabel
        label.text = updatedLabelText
        label.attributes = attributes
        label.textStyle = labelTextStyle
        label.textPosition = labelTextPosition
        label.surface = surface
        label.disabled = disabled
    }
}