//
//  NSAttributedString+Extension.swift
// JiuLaiBao
//
//  Created by SeanXu on 17/05/2018.
//  Copyright © 2018 GuoXiaoMei. All rights reserved.
//

import Foundation
import UIKit

public extension NSAttributedString {
    
    convenience init?(string: String?, fontSize: CGFloat, color: UIColor = UIColor.darkText) {
        self.init(string: string, font: UIFont.systemFont(ofSize: fontSize), color: color)
    }
    
    convenience init?(string: String?, font: UIFont, color: UIColor) {
        guard let string = string else { return nil }
        let attributes: [NSAttributedString.Key: Any] = [
            .font: font,
            .foregroundColor: color
        ]
        self.init(string: string, attributes: attributes)
    }
    
    convenience init?(string: String?, fontSize: CGFloat, color: UIColor = UIColor.darkText, lineSpacing: CGFloat) {
        self.init(string: string, font: UIFont.systemFont(ofSize: fontSize), color: color, lineSpacing: lineSpacing)
    }
    
    convenience init?(string: String?, font: UIFont, color: UIColor, lineSpacing: CGFloat) {
        guard let string = string else { return nil }
        let paragraphStyle = NSMutableParagraphStyle()
        paragraphStyle.lineSpacing = lineSpacing
        let attributes: [NSAttributedString.Key: Any] = [
            .paragraphStyle: paragraphStyle,
            .font: font,
            .foregroundColor: color,
            .baselineOffset: 0
            ]
        self.init(string: string, attributes: attributes)
    }
    
}