/*
* Copyright (c) 2010-2020 Belledonne Communications SARL.
*
* This file is part of linphone-iphone
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/

import UIKit

@objc class SwiftUtil: NSObject {
	
	@objc static func textToImage(drawText text: String, inImage image: UIImage) -> UIImage {
		let textColor = UIColor.black
		let fontMax = UIFont.systemFont(ofSize: 30)
		let backgroundColor = UIColor.white
		
		let size =  CGSize(width: 120, height: 120)
		
		let scale = UIScreen.main.scale
		UIGraphicsBeginImageContextWithOptions(size, false, scale)
		let context = UIGraphicsGetCurrentContext()
		backgroundColor.setFill()
		context!.fill(CGRect(x: 0, y: 0, width: size.width, height: size.height))
		
		image.draw(in: CGRect(origin: CGPoint(x: size.width/2 - (image.size.width)/2,y: 5), size: image.size))
		
		let label = UILabel(frame: CGRect(x: 0,y: 0,width: size.width,height: 50))
		label.numberOfLines = 0
		label.font = fontMax
		label.adjustsFontSizeToFitWidth = true
		label.text = text
		label.textColor = textColor
		label.textAlignment = .center
		label.allowsDefaultTighteningForTruncation = true
		label.lineBreakMode = .byTruncatingTail
		imageWithLabel(label: label).draw(in: CGRect(origin: CGPoint(x:0,y: 60), size: CGSize(width: size.width,height: 50)))
		let view = UIView(frame: CGRect(x: 0,y: 0,width: size.width,height: 50))
		view.addSubview(label)
		label.sizeToFit()
		
		
		let newImage = UIGraphicsGetImageFromCurrentImageContext()
		UIGraphicsEndImageContext()
		
		return newImage!
	}
	
	static func imageWithLabel(label: UILabel) -> UIImage {
		UIGraphicsBeginImageContextWithOptions(label.frame.size, false, 0.0)
		label.layer.render(in: UIGraphicsGetCurrentContext()!)
		let img = UIGraphicsGetImageFromCurrentImageContext()!
		UIGraphicsEndImageContext()
		return img
	}
	
}