import Foundation
import UIKit
import MediaResources

let colorKeyRegex = try? NSRegularExpression(pattern: "\"k\":\\[[\\d\\.]+\\,[\\d\\.]+\\,[\\d\\.]+\\,[\\d\\.]+\\]")

public func transformedWithFitzModifier(data: Data, fitzModifier: EmojiFitzModifier?) -> Data {
    return data
//    if let fitzModifier = fitzModifier, var string = String(data: data, encoding: .utf8) {
//        let colors: [UIColor] = [0xf77e41, 0xffb139, 0xffd140, 0xffdf79].map { UIColor(rgb: $0) }
//        let replacementColors: [UIColor]
//        switch fitzModifier {
//            case .type12:
//                replacementColors = [0xcb7b55, 0xf6b689, 0xffcda7, 0xffdfc5].map { UIColor(rgb: $0) }
//            case .type3:
//                replacementColors = [0xa45a38, 0xdf986b, 0xedb183, 0xf4c3a0].map { UIColor(rgb: $0) }
//            case .type4:
//                replacementColors = [0x703a17, 0xab673d, 0xc37f4e, 0xd89667].map { UIColor(rgb: $0) }
//            case .type5:
//                replacementColors = [0x4a2409, 0x7d3e0e, 0x965529, 0xa96337].map { UIColor(rgb: $0) }
//            case .type6:
//                replacementColors = [0x200f0a, 0x412924, 0x593d37, 0x63453f].map { UIColor(rgb: $0) }
//        }
//        
//        func colorToString(_ color: UIColor) -> String {
//            var r: CGFloat = 0.0
//            var g: CGFloat = 0.0
//            var b: CGFloat = 0.0
//            if color.getRed(&r, green: &g, blue: &b, alpha: nil) {
//                return "\"k\":[\(r),\(g),\(b),1]"
//            }
//            return ""
//        }
//        
//        func match(_ a: Double, _ b: Double, eps: Double) -> Bool {
//            return abs(a - b) < eps
//        }
//        
//        var replacements: [(NSTextCheckingResult, String)] = []
//        
//        if let colorKeyRegex = colorKeyRegex {
//            let results = colorKeyRegex.matches(in: string, range: NSRange(string.startIndex..., in: string))
//            for result in results.reversed()  {
//                if let range = Range(result.range, in: string) {
//                    let substring = String(string[range])
//                    let color = substring[substring.index(string.startIndex, offsetBy: "\"k\":[".count) ..< substring.index(before: substring.endIndex)]
//                    let components = color.split(separator: ",")
//                    if components.count == 4, let r = Double(components[0]), let g = Double(components[1]), let b = Double(components[2]), let a = Double(components[3]) {
//                        if match(a, 1.0, eps: 0.01) {
//                            for i in 0 ..< colors.count {
//                                let color = colors[i]
//                                var cr: CGFloat = 0.0
//                                var cg: CGFloat = 0.0
//                                var cb: CGFloat = 0.0
//                                if color.getRed(&cr, green: &cg, blue: &cb, alpha: nil) {
//                                    if match(r, Double(cr), eps: 0.01) && match(g, Double(cg), eps: 0.01) && match(b, Double(cb), eps: 0.01) {
//                                        replacements.append((result, colorToString(replacementColors[i])))
//                                    }
//                                }
//                            }
//                        }
//                    }
//                }
//            }
//        }
//        
//        for (result, text) in replacements {
//            if let range = Range(result.range, in: string) {
//                string = string.replacingCharacters(in: range, with: text)
//            }
//        }
//        
//        return string.data(using: .utf8) ?? data
//    } else {
//        return data
//    }
}