diff --git a/Sources/Internal/RCBit.swift b/Sources/Internal/RCBit.swift
index 46201ec..2cab581 100644
--- a/Sources/Internal/RCBit.swift
+++ b/Sources/Internal/RCBit.swift
@@ -22,22 +22,21 @@
 
 import Foundation
 
-enum RCBit: Int, CustomDebugStringConvertible {
+enum RCBit: Int {
   
   case zero
   case one
   
   init?(_ character: Character) {
     switch character {
-      case "0":
-        self = .zero
-      case "1":
-        self = .one
-      default:
-        return nil
+      case "0": self = .zero
+      case "1": self = .one
+      default: return nil
     }
   }
-  
+}
+
+extension RCBit: CustomDebugStringConvertible {
   var debugDescription: String {
     String(rawValue)
   }
diff --git a/Sources/Public/RCCoder.swift b/Sources/Public/RCCoder.swift
index 9a37fb9..0f826ec 100644
--- a/Sources/Public/RCCoder.swift
+++ b/Sources/Public/RCCoder.swift
@@ -24,7 +24,7 @@ import UIKit
 
 public final class RCCoder {
   
-  private let configuration: RCCoderConfiguration
+  private var configuration: RCCoderConfiguration
   
   public init(configuration: RCCoderConfiguration = .defaultConfiguration) {
     self.configuration = configuration
@@ -34,8 +34,9 @@ public final class RCCoder {
 public extension RCCoder {
   func encode(_ image: RCImage) throws -> UIImage {
     let bits = try encode(message: image.message)
-    return UIImage()
-    
+    image.bits = stride(from: 0, to: bits.count, by: bits.count / 4).map({Array(bits[$0 ..< min($0 + bits.count / 4, bits.count)])})
+    let drawer = RCDrawer(image: image)
+    return drawer.draw()
   }
   
   func decode(_ data: UIImage) throws -> String {
@@ -44,8 +45,7 @@ public extension RCCoder {
   }
   
   func validate(_ text: String) -> Bool {
-    let characterset = CharacterSet(charactersIn: configuration.symbols.map({String($0)}).reduce("", +))
-    return text.trimmingCharacters(in: characterset).isEmpty && text.count <= configuration.maxMessageCount
+    return text.trimmingCharacters(in: configuration.characterSet).isEmpty && text.count <= configuration.maxMessageCount
   }
 }
 
@@ -77,7 +77,6 @@ extension RCCoder {
   }
 }
 
-
 public extension RCCoder {
   enum RCCoderError: String, Error {
     case inValidText
diff --git a/Sources/Public/RCCoderConfiguration.swift b/Sources/Public/RCCoderConfiguration.swift
index 21fc6dc..369bb3b 100644
--- a/Sources/Public/RCCoderConfiguration.swift
+++ b/Sources/Public/RCCoderConfiguration.swift
@@ -22,11 +22,14 @@
 
 import Foundation
 
-public final class RCCoderConfiguration {
+public struct RCCoderConfiguration {
   
   public let symbols: [Character]
   public let maxMessageCount: Int
   internal let bitesPerSymbol: Int
+  internal lazy var characterSet: CharacterSet = {
+    CharacterSet(charactersIn: symbols.map({String($0)}).reduce("", +))
+  }()
   
   public init(symbols: String, maxMessageCount: Int) throws {
     var hash = [Character : Int]()
diff --git a/Sources/Public/RCImage.swift b/Sources/Public/RCImage.swift
index 9e28455..81e802d 100644
--- a/Sources/Public/RCImage.swift
+++ b/Sources/Public/RCImage.swift
@@ -25,17 +25,11 @@ import UIKit
 public class RCImage {
   
   public var message = ""
-  public var type = ImageType.png
-  public var size = CGSize(width: 300, height: 300)
-  public var tintColor = UIColor.purple
+  public var size = CGFloat(300)
+  public var tintColor = UIColor.systemBlue
   public var attachmentImage: UIImage?
   public var isTransparent = false
+  internal var bits = [[RCBit]]()
   
-}
-
-public extension RCImage {
-  enum ImageType {
-    case png
-    case jpg(quality: Double)
-  }
+  public init() {}
 }