/* 
 * File Remover Program
 * Author: Mike Dunphy
 * Seattle Pacific University
 * Description: This program either takes 2 arguments or can be run interactively. The two arguments are 1. path
 * where files are to prune and 2. how many days back to delete files 
 */
 
 
 
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
 
namespace fileRemover
{
    class Program
    {
        static void Main(string[] args)
        {
            string path = null;
            string days = null;
            if (args.Length > 0)
            {
                if (args.Length == 2)
                {
                    path = args[0].ToString();
                    days = args[1].ToString();
                }
                else
                {
                    Console.WriteLine("Please enter 2 arguments - Path and days to prune");
                    System.Environment.Exit(777);
                }
            }
            else
            {
                Console.Write("Enter path to prune: ");
                path = Console.ReadLine();
                Console.Write("Enter days back to prune: ");
                days = Console.ReadLine();
            }
            string formattedDate;
            formattedDate = DateTime.Now.AddDays(-30).ToString("yyyyMMdd");
            if (path != null && days != null)
            {
                DirectoryInfo di = new DirectoryInfo(path);
                FileInfo[] fis = di.GetFiles();
 
                foreach (FileInfo fi in fis)
                {
                    if (fi.LastWriteTime < DateTime.Now.AddDays(-Int32.Parse(days)))
                    {
                        fi.Delete();
                    }
                }
            }
            else
            {
                Console.WriteLine("Something went seriously wrong. Program takes 2 arguments or is run interactively. Fail.");
                System.Environment.Exit(777);
            }
        }
    }
}