using System.Drawing;

namespace View_by_Distance.Shared.Models.Stateless;

internal abstract class Location
{

    internal static bool Check(int bottom, int left, int right, int top, int zCount, bool throwException)
    {
        bool result = true;
        if (left < 0)
            result = false;
        if (right < 0)
            result = false;
        if (right < left)
            result = false;
        if (top < 0)
            result = false;
        if (bottom < 0)
            result = false;
        if (bottom < top)
            result = false;
        if (zCount < 0)
            result = false;
        if (throwException && !result)
            throw new Exception();
        return result;
    }

    internal static bool Check(int bottom, int height, int left, int right, int top, int width, int zCount, bool throwException)
    {
        bool result = true;
        if (bottom > height)
            result = false;
        if (left > width)
            result = false;
        if (right > width)
            result = false;
        if (top > height)
            result = false;
        if (zCount < 0)
            result = false;
        if (result)
            result = Check(bottom, left, right, top, zCount, throwException);
        if (throwException && !result)
            throw new Exception();
        return result;
    }

    internal static RectangleF? GetPercentagesRectangle(DistanceSettings distanceSettings, int wholePercentages)
    {
        RectangleF? result;
        string wp = wholePercentages.ToString();
        int length = (distanceSettings.LocationDigits - 1) / 4;
        string[] segments =
        [
            wp[..1],
            wp.Substring(1, length),
            wp.Substring(3, length),
            wp.Substring(5, length),
            wp.Substring(7, length)
        ];
        if (string.Join(string.Empty, segments) != wp)
            result = null;
        else
        {
            if (!int.TryParse(segments[1], out int xWholePercent) || !int.TryParse(segments[2], out int yWholePercent) || !int.TryParse(segments[3], out int wWholePercent) || !int.TryParse(segments[4], out int hWholePercent))
                result = null;
            else
            {
                float factor = 100;
                result = new(xWholePercent / factor, yWholePercent / factor, wWholePercent / factor, hWholePercent / factor);
            }
        }
        return result;
    }

}