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Program.cs
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Program.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace Planner_SLR
{
class Program
{
private static readonly List<Planner> Tasks = new List<Planner>();
public static void Main(string[] args)
{
Console.Title = "Planner-SLR";
Console.WindowHeight = 30;
Console.WindowWidth = 80;
Console.BufferWidth = 80;
//beginning of the main
while (true)
{
ExecuteAction();
}
}
//The selection menu
private static void ShowMenu()
{
//Screen cleaning
Console.Clear();
//Menu
Console.WriteLine("********************************************************************************");
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(" WARNING! AFTER YOUR CHANGES IN YOUR LIST");
Console.WriteLine(" YOU MUST VIEW IT (PRESS [0]) AND SAVE IT (PRESS [5])");
Console.WriteLine(" AND BE SURE OF THE CORRECTNESS OF THE DATA");
Console.WriteLine(" IN ADDITION THE DATA AFTER RECORDING IN THE FILE WILL BE LOST!");
Console.ResetColor();
Console.WriteLine();
Console.WriteLine("********************************************************************************");
Console.WriteLine(" Welcome to your DAILY PLANNER, choose an action: ");
Console.WriteLine("--------------------------------------------------------------------------------");
Console.WriteLine(" [0] Show to-do list");
Console.WriteLine(" [1] Add a new task");
Console.WriteLine(" [2] Delete the task");
Console.WriteLine(" [3] Edit the task");
Console.WriteLine(" [4] Viewing the contents of a file");
Console.WriteLine(" [5] Save data to the file");
Console.WriteLine(" [6] Close application");
Console.WriteLine();
Console.WriteLine("--------------------------------------------------------------------------------");
}
//Method for entering values
private static int InputSelect()
{
Console.ForegroundColor = ConsoleColor.Cyan;
Console.Write("> ");
Console.ResetColor();
try
{
//Read the entered text. The Convert.ToInt32 method produces an error if there are letters in the string
//The error is delayed by the catch block
var input = Convert.ToInt32(Console.ReadLine());
//Validation of entered values
if (!(input >= 0 && input <= 6))
{
throw new Exception("Validation error");
}
return input;
}
catch (Exception)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("\r\nPlease enter a valid number. (Between 0 and 6)");
Console.ResetColor();
return InputSelect();
}
}
private static void ExecuteAction()
{
while (true)
{
ShowMenu();
int input = InputSelect();
switch (input)
{
case 0:
ShowTasks();
break;
case 1:
CreateTask();
break;
case 2:
DeleteTask();
break;
case 3:
EditTask();
break;
case 4:
SeeTheFile();
break;
case 5:
SaveInTheFile();
break;
case 6:
EndApplication();
break;
default:
//Verification will not be performed
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Unknown number");
Console.ResetColor();
continue;
}
break;
}
}
private static int SelectTask()
{
PrintAllTasks();
try
{
var nummer = Convert.ToInt32(Console.ReadLine());
if (!(nummer >= 0 && nummer < Tasks.Count))
{
Console.ForegroundColor = ConsoleColor.Red;
throw new Exception("Validation error");
}
return nummer;
}
catch (Exception)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("An error has occurred. Please, try again.\r\n");
return SelectTask();
}
}
private static void ShowTasks()
{
Console.Clear();
Console.WriteLine("Show task`s number: " + Tasks.Count);
PrintAllTasks();
Console.WriteLine("\r\nBack with [Enter]");
//Press [Enter] to return the menu.
Console.ReadLine();
}
private static void PrintAllTasks()
{
foreach (var task in Tasks)
{
Console.WriteLine("Create: " + task.CreatedAt.ToShortDateString() + " " + task.CreatedAt.ToShortTimeString() + ": " + task.Description);
}
}
private static void CreateTask()
{
Console.Clear();
Console.WriteLine("Create task.");
Console.Write("Enter description\r\n> ");
var description = Console.ReadLine();
var todo = new Planner(description);
Tasks.Add(todo);
Console.WriteLine("The task was created.\r\nClick [Enter]");
Console.ReadLine();
}
private static void DeleteTask()
{
Console.Clear();
Console.WriteLine("Delete task.");
Console.WriteLine("To select the job to be deleted, enter its number (the numbering starts at 0)");
if (Tasks.Count == 0)
{
Console.WriteLine("There are no tasks and so none can be deleted.\r\nClick [Enter]");
Console.ReadLine();
return;
}
int task = SelectTask();
//Remove task from the list
Tasks.RemoveAt(task);
Console.WriteLine("The task was deleted successfully.\r\nClick [Enter]");
Console.ReadLine();
}
private static void EditTask()
{
Console.Clear();
Console.WriteLine("Edit task");
Console.WriteLine("To select a variable task, enter its number (the numbering starts from 0)");
if (Tasks.Count == 0)
{
Console.WriteLine("There are no tasks so none can be edited.\r\nClick [Enter]");
Console.ReadLine();
return;
}
var task = SelectTask();
var taskObj = Tasks[task];
Console.WriteLine("Old description: " + taskObj.Description);
Console.Write("New description: ");
var description = Console.ReadLine();
taskObj.Description = description;
Console.WriteLine("The task was successfully edited.\r\nClick [Enter]");
Console.ReadLine();
}
private static void EndApplication()
{
Environment.Exit(0);
}
private static void SeeTheFile()
{
if (File.Exists("Planner.txt"))
{
string line;
string[] lines = File.ReadAllLines("Planner.txt");
//Сhecking for an empty file
if (lines.Length == 0)
{
Console.WriteLine("File is empty");
}
else
{
StreamReader sr = new StreamReader("Planner.txt");
//Read the first line of text
line = sr.ReadLine();
//Continue to read until reach end of file
while (line != null)
{
Console.WriteLine(line);
//Read the next line
line = sr.ReadLine();
}
//Close the file
sr.Close();
Console.WriteLine("All data was successfully downloaded for viewing\r\nClick [Enter]");
}
Console.ReadLine();
}
else
{
Console.WriteLine("Error. File is missing\r\nClick [Enter]");
Console.ReadLine();
}
}
private static void SaveInTheFile()
{
StreamWriter sw = new StreamWriter("PLanner.txt", false);
foreach (var task in Tasks)
{
string lineffile = (task.CreatedAt.ToShortDateString() + " " + task.CreatedAt.ToShortTimeString() + ": " + task.Description);
sw.WriteLine(lineffile);
}
sw.Close();
Console.WriteLine("Data successfully recorded\r\nClick [Enter]");
Console.ReadLine();
}
}
}