/*

 * Copyright (c) 2015, Jason Maltzen

 Permission is hereby granted, free of charge, to any person obtaining a copy

 of this software and associated documentation files (the "Software"), to deal

 in the Software without restriction, including without limitation the rights

 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 copies of the Software, and to permit persons to whom the Software is

 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in

 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 THE SOFTWARE.

*/

using System;

using System.IO;

namespace DesertPaintLab

{

    // ReactionRecorder - business logic for recording paint reactions

    public class ReactionRecorder

    {

        public delegate void CaptureProgressHandler(int x, int y);

        public CaptureProgressHandler OnCaptureProgress;

        const int COLOR_TOLERANCE = 3;

        const InterfaceSize DEFAULT_INTERFACE_SIZE = InterfaceSize.Small;

        // Swatch is 301x20 solid color, 1px darker left/top, 1px black outer left/top, 1px light right/bottom, 1px bright right/bottom

        // top-right and bottom-left are bright instead of black

        // Color bars are 4x302 solid color, 2px border on all sides (darker left/top, lighter bottom/right

        public static readonly int[] SWATCH_HEIGHT = 

        {

            24, // tiny

            24, // small

            24, // medium

            24, // large

            24 // huge

        };

        public static readonly int[] SWATCH_WIDTH =

        {

            306, // tiny

            306, // small

            306, // medium

            320, // large

        };

        public static readonly int[] COLOR_BAR_WIDTH =

        {

            306, // tiny

            306, // small -- includes left and right borders

            306, // medium

            320, // large

        };

        public static readonly int[] RED_BAR_SPACING =

        {

            32, // tiny

            32, // small

            32, // medium

            32, // large

            32 // huge

        };

        public static readonly int[] GREEN_BAR_SPACING =

        {

            42, // tiny

            42, // small

            42, // medium

            42, // large

            42 // huge

        };

        public static readonly int[] BLUE_BAR_SPACING =

        {

            52, // tiny

            52, // small

            52, // medium

            52, // large

            52 // huge

        };

        // width to test on ends of swatch (10% on either end)

        public static readonly int[] SWATCH_TEST_WIDTH =

        {

            26, // tiny

            26, // small

            26, // medium

            28, // large

            31  // huge

        };

        int swatchHeight = SWATCH_HEIGHT[(int)DEFAULT_INTERFACE_SIZE];

        int swatchWidth = SWATCH_WIDTH[(int)DEFAULT_INTERFACE_SIZE];

        int swatchTestWidth = SWATCH_TEST_WIDTH[(int)DEFAULT_INTERFACE_SIZE];

        int colorBarWidth = COLOR_BAR_WIDTH[(int)DEFAULT_INTERFACE_SIZE];

        int redBarSpacing = RED_BAR_SPACING[(int)DEFAULT_INTERFACE_SIZE];

        int greenBarSpacing = GREEN_BAR_SPACING[(int)DEFAULT_INTERFACE_SIZE];

        int blueBarSpacing = BLUE_BAR_SPACING[(int)DEFAULT_INTERFACE_SIZE];

        public int SwatchHeight {  get { return swatchHeight; } }

        public int SwatchWidth {  get { return swatchWidth; } }

        public int ColorBarWidth { get { return colorBarWidth;  } }

        public int RedBarSpacing {  get { return redBarSpacing; } }

        public int GreenBarSpacing { get { return greenBarSpacing; } }

        public int BlueBarSpacing {  get { return blueBarSpacing; } }

        // Current Status

        public bool IsCaptured { get; private set; }

        public int X { get; private set; }

        public int Y { get; private set; }

        public int ScreenWidth { get; private set; }

        public int ScreenHeight { get; private set; }

        private PaintColor _recordedColor = new PaintColor();

        public PaintColor RecordedColor { get { return _recordedColor; } private set { _recordedColor.Set(value); } }

        public int RedBarX { get; private set; }

        public int RedBarY { get; private set; }

        int pixelMultiplier = 1;

        InterfaceSize interfaceSize;

        bool firstRun = true;

        int lastSwatchX = -1;

        int lastSwatchY = -1;

        public int SwatchX { get { return lastSwatchX; } }

        public int SwatchY { get { return lastSwatchY; } }

        private class PixelColor

        {

            public byte r;

            public byte g;

            public byte b;

            public bool IsMatch(PixelColor other)

            {

                return ((Math.Abs(r - other.r) <= COLOR_TOLERANCE) &&

                    (Math.Abs(g - other.g) <= COLOR_TOLERANCE) &&

                    (Math.Abs(b - other.b) <= COLOR_TOLERANCE));

            }

            public static bool IsDark(PixelColor color)

            {

                return (color.r < 0x47) && (color.g < 0x47) && (color.b < 0x47);

            }

            public static bool IsPapyrus(PixelColor color)

            {

                // red between 208 and 244

                // 240 and 255

                // green between 192 and 237

                // 223 and 248

                // blue between 145 and 205

                // 178 and 232

                //return ((r > 0xD0) && (g >= 0xC0) && (b >= 0x91)) &&

                //       ((r < 0xF4) && (g <= 0xED) && (b <= 0xCD));

                return ((color.r >= 0xF0) && (color.r <= 0xFF) && (color.g >= 0xDF) && (color.g <= 0xF8) && (color.b >= 0xB2) && (color.b <= 0xE8));

            }

            public static bool IsRed(PixelColor color)

            {

                return (color.r > 0x9F) && (color.g < 0x62) && (color.b < 0x62);

            }

            public static bool IsGreen(PixelColor color)

            {

                return (color.r < 0x62) && (color.g > 0x9F) && (color.b < 0x62);

            }

            public static bool IsBlue(PixelColor color)

            {

                return (color.r < 0x62) && (color.g < 0x62) && (color.b > 0x9F);

            }

        }

        unsafe private class Pixels

        {

            public byte* pixBytes;

            public int width;

            public int height;

            public int stride;

            public int pixelMultiplier;

            private PixelColor _tempColor = new PixelColor();

            private PixelColor _tempColor2 = new PixelColor();

            public int ComputeOffset(int x, int y)

            {