using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Text;
using System.Windows.Forms;

namespace CPUScheduling
{
    
    public partial class Input : Form
    {
        TextBox[] names, ats, bts, types;
        Random r = new Random();
        public List<CPU> list = new List<CPU>();

        public Input()
        {
            InitializeComponent();
            names = new TextBox[] { textBox1, textBox2, textBox3, textBox4, textBox5, textBox6, textBox7, textBox8, textBox9, textBox10};
            ats = new TextBox[] { textBox11, textBox12, textBox13, textBox14, textBox15, textBox16, textBox17, textBox18, textBox19, textBox20 };
            bts = new TextBox[] { textBox21, textBox22, textBox23, textBox24, textBox25, textBox26, textBox27, textBox28, textBox29, textBox30 };
            types = new TextBox[] { textBox31, textBox32, textBox33, textBox34, textBox35, textBox36, textBox37, textBox38, textBox39, textBox40};
        }

        private void button3_Click(object sender, EventArgs e)
        {
            list.Clear();
            for (int i = 0; i < names.Length; i++) {
                CPU cpu = new CPU();
                cpu.id = names[i].Text;
                cpu.at = int.Parse(ats[i].Text);
                cpu.bt = int.Parse(bts[i].Text);
                cpu.bbt = cpu.bt;
                cpu.color = Color.FromArgb(r.Next(256), r.Next(256), r.Next(256));
                switch(types[i].Text.Substring(0,1)) {
                    case "S":
                        cpu.type = Processtype.System;
                        break;
                    case "I":
                        cpu.type = Processtype.Interactive;
                        break;
                    case "B":
                        cpu.type = Processtype.Batch;
                        break;
                    default:
                        MessageBox.Show("Invalid Type! See instructions for valid types");
                        return;
                }
                list.Add(cpu);
                
            }
            this.Close();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (keyboard.Checked) {
                for (int i = 0; i < names.Length; i++) {
                    names[i].Text = "P" + i.ToString();
                    ats[i].Text = i.ToString();
                    bts[i].Text = "1";
                    types[i].Text = ((Processtype)0).ToString().Substring(0, 1);
                }
            } else if (random.Checked) {
                for (int i = 0; i < names.Length; i++) {
                    names[i].Text = "P" + i.ToString();
                    ats[i].Text = r.Next(20).ToString();
                    bts[i].Text = (r.Next(10)+1).ToString();
                    types[i].Text = ((Processtype)r.Next(3)).ToString().Substring(0, 1);
                }
            } else if (file.Checked) {
                try {
                    Stream stream = openFileDialog1.OpenFile();
                    StreamReader streamreader = new StreamReader(stream);
                    int i = 0;
                    if (streamreader.ReadLine() == "CPU SCHEDULER DATA FILE") {
                        while (!streamreader.EndOfStream) {
                            string[] temp = streamreader.ReadLine().Split('/');
                            names[i].Text = temp[0];
                            ats[i].Text = temp[1];
                            bts[i].Text = temp[2];
                            types[i].Text = temp[3];
                            i++;
                        }

                    } else {
                        MessageBox.Show("Invalid Input");
                    }

                    
                } catch { }
            }
            button3.Enabled = true;
            button5.Enabled = true;
        }

        private void button4_Click(object sender, EventArgs e) {
            this.Close();
        }

        private void button5_Click(object sender, EventArgs e) {
            saveFileDialog1.ShowDialog();
            try {
                Stream stream = saveFileDialog1.OpenFile();
                StreamWriter streamwriter = new StreamWriter(stream);

                streamwriter.WriteLine("CPU SCHEDULER DATA FILE");
                for (int i = 0; i < names.Length; i++) {
                    streamwriter.Write(names[i].Text + "/" + ats[i].Text + "/" + bts[i].Text + "/" + types[i].Text + System.Environment.NewLine);
                }

                streamwriter.Close();
                stream.Close();
            } catch { }
        }

        private void button1_Click(object sender, EventArgs e) {
            openFileDialog1.ShowDialog();
            file.Checked = true;
        }
    }
}