using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace RoboticsClub
{
    class Program
    {
        static void Main(string[] args)
        {
            // Open "Members.input" for input
            Console.Out.Write("Attempting to load 'Members.input'... ");
            TextReader input = null;

            try
            {
                input = new StreamReader("Members.input");
            }
            catch(System.IO.IOException error)
            {
                // Quit
                Console.Out.WriteLine("Failed to load 'Members.input': " + error.Message);
                return;
            }
            Console.Out.WriteLine("Done!");

            // Open "Members.output" for output
            Console.Out.Write("Attempting to load 'Members.output'... ");
            TextWriter output = null;

            try
            {
                output = new StreamWriter("Members.csv", false);
            }
            catch (System.IO.IOException error)
            {
                // Quit
                Console.Out.WriteLine("Failed to open 'Members.output': " + error.Message);
                return;
            }
            Console.Out.WriteLine("Done!");

            // Format the top of list
            output.WriteLine("Full name, User ID, EMail, Major, Year");

            // For each line in the input
            String UserID;
            while ((UserID = input.ReadLine()) != null)
            {
                // Validate the line (Either it's a "[jgb5034]@psu.edu" or a "PSU ID: [jgb5034]"
                // All else is junk

                if (UserID.Contains('@'))
                {
                    int AtIndex = UserID.IndexOf('@');
                    UserID = UserID.Substring(0, AtIndex);
                }
                else if(UserID.Contains("PSU ID: "))
                {
                    UserID = UserID.Substring("PSU ID: ".Length);
                }
                else
                    continue;

                // Read the user ID and load the user ID information
                Console.Out.Write("Processing " + UserID + ".... ");
                PersonalPage User = new PersonalPage(UserID);

                // Write out data
                if (!User.ErrorBool)
                {
                    output.WriteLine(User.FullName + ", " + User.ID + ", " + User.EMail + ", " + User.Major + ", " + User.Year);
                    Console.Out.WriteLine("Done!");
                }
                else
                    Console.Out.WriteLine("Unable to query: " + User.ID + ". Error: " + User.ErrorString);
            }
            Console.Out.WriteLine("Finished processing!");

            // Close both streams
            input.Close();
            output.Close();
        }
    }
}