using System.Collections.Generic;

using UnityEngine;

namespace QRCoder.Unity

{

public class UnityQRCode : AbstractQRCode

{

/// <summary>

/// Constructor without params to be used in COM Objects connections

/// </summary>

public UnityQRCode() { }

public UnityQRCode(QRCodeData data) : base(data) {}

public Texture2D GetGraphic(int pixelsPerModule)

{

return this.GetGraphic(pixelsPerModule, Color.black, Color.white);

}

public Texture2D GetGraphic(int pixelsPerModule, string darkColorHtmlHex, string lightColorHtmlHex)

{

return this.GetGraphic(pixelsPerModule, HexToColor(darkColorHtmlHex), HexToColor(lightColorHtmlHex));

}

public static Color HexToColor(string hexColor)

{

hexColor = hexColor.Replace("0x", "").Replace("#", "").Trim();

byte a = 255;

var r = byte.Parse(hexColor.Substring(0, 2), System.Globalization.NumberStyles.HexNumber);

var g = byte.Parse(hexColor.Substring(2, 2), System.Globalization.NumberStyles.HexNumber);

var b = byte.Parse(hexColor.Substring(4, 2), System.Globalization.NumberStyles.HexNumber);

if (hexColor.Length == 8)

{

a = byte.Parse(hexColor.Substring(6, 2), System.Globalization.NumberStyles.HexNumber);

}

return new Color32(r, g, b, a);

}

public Texture2D GetGraphic(int pixelsPerModule, Color darkColor, Color lightColor)

{

var size = this.QrCodeData.ModuleMatrix.Count * pixelsPerModule;

var gfx = new Texture2D(size, size, TextureFormat.ARGB32, false);

var darkBrush = this.GetBrush(pixelsPerModule, pixelsPerModule, darkColor);

var lightBrush = this.GetBrush(pixelsPerModule, pixelsPerModule, lightColor);

for (var x = 0; x < size; x = x + pixelsPerModule)

{

for (var y = 0; y < size; y = y + pixelsPerModule)

{

var module = this.QrCodeData.ModuleMatrix[(y + pixelsPerModule) / pixelsPerModule - 1][(x + pixelsPerModule) / pixelsPerModule - 1];

if (module)

gfx.SetPixels(x, y, pixelsPerModule, pixelsPerModule, darkBrush);

else

gfx.SetPixels(x, y, pixelsPerModule, pixelsPerModule, lightBrush);

}

}

gfx.Apply();

return gfx;

}

internal Color[] GetBrush(int sizeX, int sizeY, Color defaultColor) {

var len = sizeX * sizeY;

var brush = new List<Color>(len);

for(var i = 0; i < len; i++){

brush.Add(defaultColor);

}

return brush.ToArray();

}

}

}