using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            MaleCheck();
            Category();
        }

        private void radioButton2_CheckedChanged(object sender, EventArgs e)
        {
            MaleCheck();
            Category();
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            bool noletters = textBox1.Text.Any(x => !char.IsLetter(x));
            if (textBox1.Text != "" && noletters)
            {
                Data.kg = Convert.ToDouble(textBox1.Text);
                UpdateIndex();
                Category();
            }
        }

        private void textBox2_TextChanged(object sender, EventArgs e)
        {
            bool noletters = textBox2.Text.Any(x => !char.IsLetter(x));
            if (textBox2.Text != "" && noletters)
            {
                Data.m = Convert.ToDouble(textBox2.Text) / 100;
                UpdateIndex();
                Category();
            }
        }

        public void UpdateIndex()
        {
            if (Data.index != null && Data.m != null && Data.m != 0)
            {
                Data.index = Data.kg / (Data.m * Data.m);
            }
        }

        public void Category()
        {
            if (Data.male)
            {
                switch (Data.index)
                {
                    case double n when n < 20.7:
                        label3.Text = $"BMI:{n}\nSovány";
                        break;
                    case double n when n >= 20.7 && n < 27.8:
                        label3.Text = $"BMI:{n}\nNormális";
                        break;
                    case double n when n >= 27.8 && n < 32.3:
                        label3.Text = $"BMI:{n}\nTúlsúlyos";
                        break;
                    case double n when n >= 32.3  && n < 45.4:
                        label3.Text = $"BMI:{n}\nKomolyan Túlsúlyos";
                        break;
                    case double n when n >= 45.4:
                        label3.Text = $"BMI:{n}\nVeszélyeztetett";
                        break;
                    default:
                        break;
                }
            }
            else
            {
                switch (Data.index)
                {
                    case double n when n < 19.1:
                        label3.Text = $"BMI:{n}\nSovány";
                        break;
                    case double n when n >= 19.1 && n < 27.3:
                        label3.Text = $"BMI:{n}\nNormális";
                        break;
                    case double n when n >= 27.3 && n < 31.1:
                        label3.Text = $"BMI:{n}\nTúlsúlyos";
                        break;
                    case double n when n >= 31.1 && n < 44.8:
                        label3.Text = $"BMI:{n}\nKomolyan Túlsúlyos";
                        break;
                    case double n when n >= 44.8:
                        label3.Text = $"BMI:{n}\nVeszélyeztetett";
                        break;
                    default:
                        break;
                }
            }
        }

        public void MaleCheck()
        {
            if (radioButton1.Checked)
            {
                Data.male = true;
            }
            else
            {
                Data.male = false;
            }
        }
    }

    public static class Data{
        public static double kg;
        public static double m;
        public static double index;
        public static bool male;
    }
}