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;
using System.IO;

namespace WindowsFormsApplication4
{



    public partial class Form1 : Form
    {
        public enum pc_type { table, mono, nettop, gaming };
        public struct PC
        {
            public string firm;
            public pc_type state;
            public int ram, hdd_capacity;
            public bool tv;
            public PC(string FIRM, pc_type t, int RAM, int HDD, bool TV)
            {
                firm = FIRM;
                state = t;
                ram = RAM;
                hdd_capacity = HDD;
                tv = TV;
            }
        }
        public pc_type radio_state()
        {
            if (radioButton1.Checked)      { return pc_type.table; }
            else if (radioButton2.Checked) { return pc_type.mono; }
            else if (radioButton3.Checked) { return pc_type.nettop; }
            else { return pc_type.gaming; }
        }
        public void radio_off()
        {
            radioButton1.Checked = false;
            radioButton2.Checked = false;
            radioButton3.Checked = false;
            radioButton4.Checked = false;
        }
        public Form1()
        {
            InitializeComponent();
            radioButton1.Checked = true;
            string path = Environment.CurrentDirectory + "\\pc.dat";
            BinaryWriter writer = new BinaryWriter(File.Open(path, FileMode.OpenOrCreate));
            writer.Close();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string path = Environment.CurrentDirectory + "\\pc.dat";
            PC input = new PC(textBox1.Text, radio_state(), Convert.ToInt32(textBox2.Text),
                              Convert.ToInt32(textBox3.Text), checkBox1.Checked);
            BinaryWriter writer = new BinaryWriter(File.Open(path, FileMode.Append));
            writer.Write(input.firm);
            writer.Write(Convert.ToInt32(input.state));
            writer.Write(input.ram);
            writer.Write(input.hdd_capacity);
            writer.Write(input.tv);
            writer.Close();

        }

        private void radioButton1_Click(object sender, EventArgs e)
        {
            radio_off();
            radioButton1.Checked = true;
        }

        private void radioButton2_Click(object sender, EventArgs e)
        {
            radio_off();
            radioButton2.Checked = true;
        }

        private void radioButton3_Click(object sender, EventArgs e)
        {
            radio_off();
            radioButton3.Checked = true;
        }

        private void radioButton4_Click(object sender, EventArgs e)
        {
            radio_off();
            radioButton4.Checked = true;
        }

        private void button3_Click(object sender, EventArgs e)
        {
            richTextBox1.Clear();
            string path = Environment.CurrentDirectory + "\\pc.dat";
            BinaryReader reader = new BinaryReader(File.Open(path, FileMode.Open));
            if(reader.PeekChar() == - 1)
            {
                reader.Close();
                richTextBox1.Text += "File is empty. \n";
                return;
            }
            while(reader.PeekChar() > -1 )
            {
                richTextBox1.Text += "////////\n";
                richTextBox1.Text += reader.ReadString() + '\n';
                string type = "pc type: ";
                switch(reader.ReadInt32())
                {
                    case 1: { type += "table"; break; }
                    case 2: { type += "mono"; break; }
                    case 3: { type += "nettop"; break; }
                    case 4: { type += "gaming"; break; }
                }
                richTextBox1.Text += type + '\n';
                richTextBox1.Text += "ram: " + reader.ReadInt32() + '\n';
                richTextBox1.Text += "hdd capacity: " + reader.ReadInt32() + '\n';
                if(reader.ReadBoolean())
                {
                    richTextBox1.Text += "have tv \n";
                }
                else
                {
                    richTextBox1.Text += "dont have tv \n";
                }

            }
            reader.Close();

        }

        private void button2_Click(object sender, EventArgs e)
        {
            string path = Environment.CurrentDirectory + "\\pc.dat";
            BinaryWriter writer = new BinaryWriter(File.Open(path, FileMode.Create));
            writer.Close();
        }
    }
}