//
//  ContentItemView.swift
//  AeroBuddy
//
//  Created by Kieran Samuel Cross on 25/12/2019.
//  Copyright © 2019 Luke Collister. All rights reserved.
//

import UIKit
import SwiftSoup

class ContentItemView: UIView {

    @IBOutlet weak var ContentTitle: UILabel!
    @IBOutlet weak var ContentText: UILabel!

    var currentContent = 0
    var contentList: [Content]!


    func reload() {
        ContentTitle.text = contentList[currentContent].title
        //ContentText.text = contentList[currentContent].isVideo ? contentList[currentContent].description : contentList[currentContent].content

        var htmlString: String?
        htmlString = contentList[currentContent].content

        if (htmlString != nil) {
            let data = htmlString!.data(using: String.Encoding.unicode)!
            let attrStr = try? NSAttributedString(
                data: data,
                options: [NSAttributedString.DocumentReadingOptionKey.documentType: NSAttributedString.DocumentType.html],
                documentAttributes: nil)
            ContentText.attributedText = attrStr
        }
    }

    /*
    func reload() {
        ContentTitle.text = contentList[currentContent].title
        do {
            let html = contentList[currentContent].content!
            guard let doc: Document = try? SwiftSoup.parse(html) else { return }
            let data = try doc.html().data(using: String.Encoding.unicode)!
            let attrStr = try? NSAttributedString(
                data: data,
                options: [NSAttributedString.DocumentReadingOptionKey.documentType: NSAttributedString.DocumentType.html],
                documentAttributes: nil)
            ContentText.attributedText = attrStr
            //ContentText.text = try doc.html()
            print("DOC: ", doc)
            print("DOC.TEXT: ", try doc.text())
        } catch {
            print("There was an error parsing the HTML")
        }
    }
 */
}

extension NSAttributedString {
    func attributedStringWithResizedImages(with maxWidth: CGFloat) -> NSAttributedString {
        let text = NSMutableAttributedString(attributedString: self)
        text.enumerateAttribute(NSAttributedString.Key.attachment, in: NSMakeRange(0, text.length), options: .init(rawValue: 0), using: { (value, range, stop) in
            if let attachement = value as? NSTextAttachment {
                let image = attachement.image(forBounds: attachement.bounds, textContainer: NSTextContainer(), characterIndex: range.location)!
                if image.size.width > maxWidth {
                    let newImage = image.resizeImage(scale: maxWidth/image.size.width)
                    let newAttribut = NSTextAttachment()
                    newAttribut.image = newImage
                    text.addAttribute(NSAttributedStringKey.attachment, value: newAttribut, range: range)
                }
            }
        })
        return text
    }
}

extension UIImage {
    func resizeImage(scale: CGFloat) -> UIImage {
        let newSize = CGSize(width: self.size.width*scale, height: self.size.height*scale)
        let rect = CGRect(origin: CGPoint.zero, size: newSize)

        UIGraphicsBeginImageContext(newSize)
        self.draw(in: rect)
        let newImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return newImage!
    }
}