using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace ConsoleApp1
{
    /*Belolo, Gio Staniell E.
      IT111L - B54 */


    class VotersInfo
    {
        //Inheritance and Encapsulation
        Validation check = new Validation();
        public void addInfo(ArrayList info)
        {


            bool result = true;

            for (int i = 0; i < 6; i++)
            {
                if (info[i] is string)
                {
                    if (check.checkInput(info[i].ToString()) == false)
                    {
                        result = false;
                        break;
                    }
                }
                else if (info[i] is byte)
                {
                    if (check.checkInput(Convert.ToByte(info[i])) == false)
                    {
                        result = false;
                        break;
                    }
                }

            }

            if (result)
            {
                FileStream voterFile = new FileStream("Voters.txt", FileMode.OpenOrCreate);
                StreamReader lineread = new StreamReader(voterFile);
                string firstLine = lineread.ReadLine();
                voterFile.Close();
                if (firstLine == null)
                    File.AppendAllText ("Voters.txt", "Voters ID|Voters Name|Gender|Age|Barangay Code|Municipality Code");

                voterFile = new FileStream("Voters.txt", FileMode.Open);
                lineread = new StreamReader(voterFile);
                string checkline = lineread.ReadLine();
                checkline = lineread.ReadLine();


                string votersList = Environment.NewLine + info[0] + "|" + info[1] + "|" + info[2] + "|" + info[3] + "|" + info[4] + "|" + info[5] + "|";
                lineread.Close();
                voterFile.Close();
                File.AppendAllText("Voters.txt", votersList);
                Console.WriteLine("\nVoters data added!");
            }
            else
                Console.WriteLine("Data not added");

        }

        public void summaryInfo()
        {
            FileStream voterFile = new FileStream("Voters.txt", FileMode.OpenOrCreate);
            StreamReader lineread = new StreamReader(voterFile);
            string firstLine = lineread.ReadLine();
            voterFile.Close();
            if (firstLine == null)
                File.AppendAllText("Voters.txt", "Voters ID|Voters Name|Gender|Age|Barangay Code|Municipality Code");

            voterFile = new FileStream("Voters.txt", FileMode.Open);
            lineread = new StreamReader(voterFile);
            string oneline = lineread.ReadLine();
            oneline = lineread.ReadLine();

            string[] votersContent;

            if (oneline != null)
                votersContent = oneline.Split('|');
            int male = 0, female = 0, teenagers = 0, pulo = 0, mamatid = 0,
                balete = 0, lagyo = 0,cabuyao = 0, lipa = 0;

            while (oneline != null)
            {
                votersContent = oneline.Split('|');
                oneline = lineread.ReadLine();
                if (votersContent[2] == "F")
                        female++;
                if (votersContent[2] == "M")
                        male++;
                if (Int32.Parse(votersContent[3]) > 18 && Int32.Parse(votersContent[3]) < 21)
                    teenagers++;
                if (votersContent[5] == "1" && votersContent[4] == "A")
                    pulo++;
                if (votersContent[5] == "1" && votersContent[4] == "B")
                    mamatid++;
                if (votersContent[5] == "2" && votersContent[4] == "A")
                    balete++;
                if (votersContent[5] == "2" && votersContent[4] == "B")
                    lagyo++;


            }
            Console.WriteLine("Number of Residents per Municipality");
            Console.WriteLine("Cabuyao - {0}", pulo + mamatid);
            Console.WriteLine("Lipa - {0}\n", balete + lagyo);

            Console.WriteLine("Number of Residents per Barangay");
            Console.WriteLine("Pulo - {0}", pulo);
            Console.WriteLine("Mamatid - {0}", mamatid);

            Console.WriteLine("Balete - {0}", balete);
            Console.WriteLine("Lagyo - {0}\n", lagyo);

            Console.WriteLine("Male Voters - {0}", male);
            Console.WriteLine("Female Voters - {0}", female);
            Console.WriteLine("Teenage Voters - {0}", teenagers);


        }

        public void eraseData()
        {
            try
            {
                string idToDelete;
                Console.Write("Enter the voter's ID to be deleted:");
                idToDelete = Console.ReadLine();
                var tempFile = Path.GetTempFileName();
                var linesToKeep = File.ReadLines("Voters.txt").Select(l => l.Split('|')).Where(l => l[0] != idToDelete).Select(l => string.Join("|", l));

                File.WriteAllLines(tempFile, linesToKeep);

                File.Delete("Voters.txt");
                File.Move(tempFile, "Voters.txt");
                Console.WriteLine("{0} info has been deleted");
            }
            catch
            {
                Console.WriteLine("Voter's ID does not exist");
            }
        }
    }


    class Validation
    {
        //Polymorphism
        public bool checkInput(string info)
        {
            if (info.Length <= 0)
            {
                Console.WriteLine("\nEnter a valid name");
                return false;
            }

            if (info.Length == 1)
            {
                switch (info)
                {
                    case "M":
                        return true;
                    case "F":
                        return true;
                    case "A":
                        return true;
                    case "B":
                        return true;
                    default:
                        return false;
                }
            }

            return true;
        }
        public bool checkInput(byte int_info)
        {
            if (int_info < 18)
            {
                Console.WriteLine("Enter a valid age");
                return false;
            }
            return true;
        }

        public bool checkInput(sbyte int_info)
        {
            if (int_info != 1 || int_info !=2)
            {
                Console.WriteLine("Municipality code must be 1 or 2 only");
                return false;
            }
            return true;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            bool condition = true;
            string votersName, gender, barangayCode, votersID;
            byte voterAge;
            sbyte municipalityCode;

            while (condition)
            {
                Console.WriteLine("\n1 - Data Entry\n2 - Summary of Information\n3 - Erase a data\n4 - Exit\n");

                Console.Write("Select a command:");
                string choice = Console.ReadLine();
                Console.WriteLine("\n");
                VotersInfo voter = new VotersInfo();


                switch (choice)
                {
                    case "1":

                        var voters_info = new ArrayList();

                        Console.Write("Voter's ID:");
                        votersID = Console.ReadLine();
                        Console.Write("Voter's Name:");
                        votersName = Console.ReadLine();

                        Console.Write("Gender:");
                        gender = Console.ReadLine();
                        Console.Write("Age:");
                        byte.TryParse(Console.ReadLine(), out voterAge);




                        Console.Write("Barangay Code:");
                        barangayCode = Console.ReadLine();

                        Console.Write("Municipality Code:");
                        sbyte.TryParse(Console.ReadLine(), out municipalityCode);


                        voters_info.Add(votersID);
                        voters_info.Add(votersName);
                        voters_info.Add(gender);
                        voters_info.Add(voterAge);
                        voters_info.Add(barangayCode);
                        voters_info.Add(municipalityCode);

                        voter.addInfo(voters_info);


                        break;
                    case "2":
                        voter.summaryInfo();
                        Console.ReadKey();
                        break;
                    case "3":
                        voter.eraseData();
                        Console.ReadKey();
                        break;
                    case "4":
                        condition = false;
                        break;
                    default:
                        Console.WriteLine("Enter a valid number");
                        break;
                }
            }
        }
    }
}