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

namespace Bombardment
{
    class Program
    {
        private Tools _Tools = new Tools();
        private bool _Running;
        private bool _GameOver;
        private int[] _YourGrid = new int[25] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
        private int[] _EnemyGrid = new int[25] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
        private int[] _Outposts = new int[2] { 0, 0 };
        private void DisplayRules()
        {
            Console.WriteLine("YOU ARE ON A BATTLEFIELD WITH 4 PLATOONS AND YOU");
            Console.WriteLine("HAVE 25 OUTPOSTS AVAILABLE WHERE THEY MAY BE PLACED.");
            Console.WriteLine("YOU CAN ONLY PLACE ONE PLATOON AT ANY ONE OUTPOST.");
            Console.WriteLine("THE COMPUTER DOES THE SAME WITH ITS FOUR PLATOONS.\r\n");
            Console.WriteLine("THE OBJECT OF THE GAME IS TO FIRE MISSILES AT THE");
            Console.WriteLine("OUTPOSTS OF THE COMPUTER. IT WILL DO THE SAME TO YOU.");
            Console.WriteLine("THE ONE WHO DESTROYS ALL FOUR OF THE ENEMY'S PLATOONS");
            Console.WriteLine("FIRST IS THE WINNER.\r\n");
            Console.WriteLine("GOOD LUCK...AND TELL US WHERE YOU WANT THE BODIES SENT.\r\n");
        }

        private int CheckWinner()
        {
            if (_Outposts[0] == 0) return 2;
            if (_Outposts[1] == 0) return 1;
            return 0;
        }

        private void DisplayYourGrid()
        {
            Console.WriteLine("=======================");
            Console.WriteLine("YOUR GRID");
            Console.WriteLine("=======================");
            Console.WriteLine("X | 1 | 2 | 3 | 4 | 5 |");
            Console.WriteLine("Y |---+---+---+---+---|");
            for (int x = 1; x < 6; x++)
            {
                int gStart = (x - 1) * 5;
                int gEnd = x * 5;
                string displayLine = $"{x} |";
                for (int g = gStart; g < gEnd; g++)
                {
                    if (_YourGrid[g] == -1) displayLine += " X |";
                    else if (_YourGrid[g] == 1) displayLine += " O |";
                    else displayLine += "   |";
                }
                Console.WriteLine(displayLine);
                Console.WriteLine("  |---+---+---+---+---|");
            }
        }

        private void DisplayEnemyGrid()
        {
            Console.WriteLine("=======================");
            Console.WriteLine("ENEMY GRID");
            Console.WriteLine("=======================");
            Console.WriteLine("X | 1 | 2 | 3 | 4 | 5 |");
            Console.WriteLine("Y |---+---+---+---+---|");
            for (int x = 1; x < 6; x++)
            {
                int gStart = (x - 1) * 5;
                int gEnd = x * 5;
                string displayLine = $"{x} |";
                for (int g = gStart; g < gEnd; g++)
                {
                    if (_EnemyGrid[g] == -1) displayLine += " X |";
                    else displayLine += "   |";
                }
                Console.WriteLine(displayLine);
                Console.WriteLine("  |---+---+---+---+---|");
            }
        }

        private void ClearGrids()
        {
            for (int g = 0; g < 25; g++) _YourGrid[g] = _EnemyGrid[g] = 0;
        }

        private void SetOutposts()
        {
            _Outposts[0] = 4;
            for(int o = 0; o < 4; o ++)
            {
                DisplayYourGrid();
                bool outpostSet = false;
                while (!outpostSet)
                {
                    Console.WriteLine($"PLACE YOUR OUTPOST #{o + 1}");
                    int x = _Tools.GetIntInput("X");
                    if (x < 1 || x > 5) Console.WriteLine("X MUST BE BETWEEN 1 AND 5.");
                    else
                    {
                        int y = _Tools.GetIntInput("Y");
                        if (y < 1 || y > 5) Console.WriteLine("Y MUST BE BETWEEN 1 AND 5.");
                        else
                        {
                            int outpost = ((y - 1) * 5) + (x - 1);
                            if (_YourGrid[outpost] == 0)
                            {
                                outpostSet = true;
                                _YourGrid[outpost] = 1;
                            }
                            else Console.WriteLine("YOU ALREADY HAVE AN OUTPOST THERE.");
                        }
                    }
                }
            }
        }

        private void ComputerSetOutposts()
        {
            _Outposts[1] = 4;
            for (int o = 0; o < 4; o++)
            {
                bool outpostSet = false;
                while (!outpostSet)
                {
                    int x = _Tools.GenerateRandomNumber(1, 5, false);
                    int y = _Tools.GenerateRandomNumber(1, 5, false);
                    int outpost = ((y - 1) * 5) + (x - 1);
                    if (_EnemyGrid[outpost] == 0)
                    {
                        outpostSet = true;
                        _EnemyGrid[outpost] = 1;
                    }
                }
            }
        }

        private void ComputerTurn()
        {
            Console.WriteLine("MY TURN ...");
            int loc = 0, x = 0, y = 0;
            bool gotLoc = false;
            while (!gotLoc)
            {
                x = _Tools.GenerateRandomNumber(1, 5, false);
                y = _Tools.GenerateRandomNumber(1, 5, false);
                loc = ((y - 1) * 5) + (x - 1);
                if (_YourGrid[loc] > -1) gotLoc = true;
            }
            Console.WriteLine("..........BOOM!");
            if(_YourGrid[loc] == 0)
            {
                Console.WriteLine("I MISSED YOU, YOU DIRTY RAT.");
                Console.WriteLine($"I PICKED LOCATION ({x},{y}).");
            }
            else
            {
                Console.WriteLine("I GOT YOU.  IT WON'T BE LONG NOW!");
                Console.WriteLine($"OUTPOST AT ({x},{y}) WAS HIT.");
                _YourGrid[loc] = -1;
                _Outposts[0]--;
                if (_Outposts[0] == 3) Console.WriteLine("YOU ONLY HAVE THREE OUTPOSTS LEFT.");
                else if (_Outposts[0] == 2) Console.WriteLine("YOU ONLY HAVE TWO OUTPOSTS LEFT.");
                else if (_Outposts[0] == 1) Console.WriteLine("YOU ONLY HAVE ONE OUTPOST LEFT.");
                else Console.WriteLine("YOU ARE DEAD! YOU HAVE NO OUTPOSTS LEFT.");
            }
        }

        private void FireMissile()
        {
            Console.WriteLine("WHERE DO YOU WANT TO FIRE YOUR MISSILE?");
            int x = 0, y = 0;
            bool gotLoc = false;
            while (!gotLoc)
            {
                x = _Tools.GetIntInput("X");
                if (x < 1 || x > 5) Console.WriteLine("PLEASE ENTER A NUMBER BETWEEN 1 AND 5.");
                else gotLoc = true;
            }
            gotLoc = false;
            while (!gotLoc)
            {
                y = _Tools.GetIntInput("Y");
                if (y < 1 || y > 5) Console.WriteLine("PLEASE ENTER A NUMBER BETWEEN 1 AND 5.");
                else gotLoc = true;
            }
            int loc = ((y - 1) * 5) + (x - 1);
            Console.WriteLine("..........BOOM!");
            if (_EnemyGrid[loc] == -1)
                Console.WriteLine("YOU FOOL, YOU ALREADY ATTACKED THERE!");
            else if (_EnemyGrid[loc] == 0)
                Console.WriteLine("HA HA, YOU MISSED!");
            else
            {
                Console.WriteLine("YOU GOT ONE OF MY OUTPOSTS!");
                _EnemyGrid[loc] = -1;
                _Outposts[1]--;
                if (_Outposts[1] == 3) Console.WriteLine("ONE DOWN, THREE TO GO.");
                else if (_Outposts[1] == 2) Console.WriteLine("TWO DOWN, TWO TO GO.");
                else if (_Outposts[1] == 1) Console.WriteLine("THREE DOWN, ONE TO GO.");
                else Console.WriteLine("YOU GOT THEM ALL.");
            }
        }

        public void Run()
        {
            Console.WriteLine("*** BOMBARDMENT : C# ***");
            _Running = true;
            if (_Tools.AskToSeeTheRules()) DisplayRules();
            while (_Running)
            {
                int turn = 0;
                ClearGrids();
                ComputerSetOutposts();
                SetOutposts();
                _GameOver = false;
                Console.WriteLine("--------- LET THE WAR BEGIN ----------");
                while (!_GameOver)
                {
                    Console.WriteLine("-----------------------");
                    Console.WriteLine($"TURN #{turn + 1}");
                    Console.WriteLine("-----------------------");
                    if(turn % 2 == 0)
                    {
                        DisplayYourGrid();
                        DisplayEnemyGrid();
                        FireMissile();
                    }
                    else ComputerTurn();
                    int winner = CheckWinner();
                    if (winner == 1)
                    {
                        DisplayYourGrid();
                        DisplayEnemyGrid();
                        Console.WriteLine("YOU WIN!!!");
                        _GameOver = true;
                    }
                    else if (winner == 2)
                    {
                        DisplayYourGrid();
                        DisplayEnemyGrid();
                        Console.WriteLine("TOO BAD, BETTER LUCK NEXT TIME.");
                        _GameOver = true;
                    }
                    else turn++;
                }
                Console.WriteLine("*** GAME OVER ***");
                _Running = _Tools.AskToPlayAgain();
            }
            Console.WriteLine("THANKS FOR PLAYING!");
        }

        static void Main(string[] args)
        {
            Program p = new Program();
            p.Run();
            Console.ReadLine();
        }
    }
}