using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Assignment3
{
    public class Tweet
    {

        private static int currentId = 0;
        public int ID;
        public string From;
        public string To;
        public string Message;
        public string Hashtag;

        public override string ToString()
        {
            string str = "From: " + this.From + "nTo: " + this.To + "nMessage: " + this.Message.Substring(0, Math.Min(this.Message.Length, 10));
            return str;
        }

        public static Tweet Parse(string line)
        {
            Tweet temp;
            try
            {
                string[] parameterList = line.Split('t');
                Console.WriteLine(parameterList[0]);
                temp = new Tweet(parameterList[0], parameterList[1], parameterList[2], parameterList[3]);
            }
            catch (IndexOutOfRangeException e)
            {
                temp = new Tweet("Invalid", "Invalid", "Invalid", "Invalid");
                Console.WriteLine("Exception caught: {0}", e);
            }
            return temp;
        }

        public Tweet(string from, string to, string message, string hashtag)
        {
            this.From = from;
            this.To = to;
            this.Message = message;
            this.Hashtag = hashtag;
            this.ID = Tweet.currentId;
            Tweet.currentId++;
        }

    }
}

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web.Script.Serialization;

namespace Assignment3
{
    class TweetManager
    {

        private static Tweet[] tweets;
        private static string fileName;


        static TweetManager()
        {
            int length = tweets.Length;
            tweets = new Tweet[length];

            try
            {


                StreamReader read = new StreamReader(@"D:tweets.txt");
                string line = read.ReadLine();

                for (int i =0; line !=null; i++)
                {
                    line = read.ReadLine();
                    tweets[i] = Tweet.Parse(line);
                    Console.WriteLine(line);
                }
                read.Close();

            }

            catch(Exception e)
            {
                Console.WriteLine("Exception: " + e.Message);
            }
        }

        public static void ShowAll()
        {
            foreach (var item in tweets)
            {
                Console.WriteLine($"{item}");
            }
        }

        public static void ShowAll(string hashtag)
        {
            var hash = hashtag;
            if (hash != hashtag)
            {
                Console.WriteLine("none of the tweets have this hashtag");
            }
            else
            {
               foreach (var item in tweets)
                {
                    Console.WriteLine($"{item}");
                }
            }


        }

        public static void ConvertToJson()
        {
            JavaScriptSerializer serializer = new JavaScriptSerializer();

            FileStream fileStream = new FileStream("tweets.json", FileMode.OpenOrCreate, FileAccess.Write);
            StreamWriter streamWriter = new StreamWriter(fileStream);

            var serialized = serializer.Serialize(tweets);

            streamWriter.Close();
            fileStream.Close();
        }

    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Assignment3
{
    class Program
    {
        static void Main(string[] args)
        {
            TweetManager.ShowAll();

            Console.ReadKey();
        }
    }
}