//
//  HeadlineBody.swift
//  MVMCoreUI
//
//  Created by Scott Pfeil on 7/1/19.
//  Copyright © 2019 Verizon Wireless. All rights reserved.
//

import UIKit

open class HeadlineBody: ViewConstrainingView {
    let headlineLabel = Label.commonLabelH2(true)
    let messageLabel = Label.commonLabelB2(true)
    var spaceBetweenLabels: NSLayoutConstraint?
    var leftConstraintTitle: NSLayoutConstraint?
    var rightConstraintTitle: NSLayoutConstraint?
    var leftConstraintMessage: NSLayoutConstraint?
    var rightConstraintMessage: NSLayoutConstraint?
    
    // MARK: - MVMCoreViewProtocol
    open override func updateView(_ size: CGFloat) {
        super.updateView(size)
        headlineLabel.updateView(size)
        messageLabel.updateView(size)
        setSpacing()
    }
    
    open override func setupView() {
        super.setupView()
        guard subviews.count == 0 else {
            return
        }
        translatesAutoresizingMaskIntoConstraints = false
        backgroundColor = .clear
        clipsToBounds = true
            
        addSubview(headlineLabel)
        addSubview(messageLabel)
            
        headlineLabel.setContentHuggingPriority(UILayoutPriority.required, for: NSLayoutConstraint.Axis.vertical)
        messageLabel.setContentHuggingPriority(UILayoutPriority.required, for: NSLayoutConstraint.Axis.vertical)
        setContentHuggingPriority(UILayoutPriority.required, for: NSLayoutConstraint.Axis.vertical)
            
        topPin = headlineLabel.topAnchor.constraint(equalTo: topAnchor, constant: 0)
        topPin?.isActive = true
            
        spaceBetweenLabels = messageLabel.topAnchor.constraint(equalTo: headlineLabel.bottomAnchor, constant: PaddingTwo)
        spaceBetweenLabels?.isActive = true
            
        leftConstraintTitle = headlineLabel.leftAnchor.constraint(equalTo: leftAnchor)
        leftConstraintTitle?.isActive = true
            
        rightConstraintTitle = rightAnchor.constraint(equalTo: headlineLabel.rightAnchor)
        rightConstraintTitle?.isActive = true
            
        leftConstraintMessage = messageLabel.leftAnchor.constraint(equalTo: leftAnchor)
        leftConstraintMessage?.isActive = true
        
        rightConstraintMessage = rightAnchor.constraint(equalTo: messageLabel.rightAnchor)
        rightConstraintMessage?.isActive = true
        
        bottomPin = bottomAnchor.constraint(equalTo: messageLabel.bottomAnchor, constant: 0)
        bottomPin?.isActive = true
    }
    
    // MARK: - Constraining
    public func setSpacing() {
        if headlineLabel.hasText && messageLabel.hasText {
            spaceBetweenLabels?.constant = PaddingTwo
        } else {
            spaceBetweenLabels?.constant = 0
        }
    }
    
    open override func setLeftPinConstant(_ constant: CGFloat) {
        leftConstraintTitle?.constant = constant
        leftConstraintMessage?.constant = constant
    }
    
    open override func setRightPinConstant(_ constant: CGFloat) {
        rightConstraintTitle?.constant = constant
        rightConstraintMessage?.constant = constant
    }
    
    // MARK: - MVMCoreUIMoleculeViewProtocol
    open override func setWithJSON(_ json: [AnyHashable: Any]?, delegateObject: MVMCoreUIDelegateObject?, additionalData: [AnyHashable: Any]?) {
        super.setWithJSON(json, delegateObject: delegateObject, additionalData: additionalData)
        
        let headlineJSON = json?.optionalDictionaryForKey("headline")
        headlineLabel.setWithJSON(headlineJSON, delegateObject: delegateObject, additionalData: additionalData)
        let bodyJSON = json?.optionalDictionaryForKey("body")
        messageLabel.setWithJSON(bodyJSON, delegateObject: delegateObject, additionalData: additionalData)
    }
    
    open override func reset() {
        super.reset()
        headlineLabel.styleH2(true)
        messageLabel.styleB2(true)
    }
    
    public override static func estimatedHeight(forRow json: [AnyHashable : Any]?, delegateObject: MVMCoreUIDelegateObject?) -> CGFloat {
        return 58
    }
}