package server.game.content.lottery;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.text.NumberFormat;
import java.util.HashMap;

import server.event.CycleEvent;
import server.event.CycleEventContainer;
import server.event.CycleEventHandler;
import server.game.entity.players.Client;
import server.game.entity.players.Player;
import server.game.entity.players.PlayerHandler;
import server.util.Misc;

/**
 * The main class that processes lottery actions
 * @author Karma
 *
 */
public class Lottery extends LotteryConfig {

	/**
	 * A map containing lottery numbers and their owners
	 */
	public static HashMap<Integer, String> ticketEntrance = new HashMap<Integer, String>();

	/**
	 * Processes a lottery number
	 * @param client
	 * 			the player buying a lottery number
	 * @param number
	 * 			the lottery number
	 */
	public static void enterLottery(final Client client, int number) {
		if (PlayerHandler.updateRunning) {
			client.sendMessage("You can't buy a lottery number during an update.");
			return;
		}
		if (canStart) {
			client.sendMessage("You can't enter the lottery while numbers are being drawn.");
			return;
		}
		if (!client.getItems().playerHasItem(995, TICKET_COST)) {
			client.sendMessage("You need to have "+TICKET_COST+"gp to buy a lottery number.");
			return;
		}
		if (ticketEntrance.containsValue(client.playerName.toLowerCase())) {
			client.sendMessage("You've already entered this lottery draw.");
			return;
		}
		if (ticketEntrance.containsKey(number)) {
			client.sendMessage("Someone's already bought this number, choose another.");
			return;
		}
		if (number > LOTTERY_DRAW_MAX) {
			client.sendMessage("Your ticket number must be from 0 to 50.");
			return;
		}
		if (client.getItems().playerHasItem(995, TICKET_COST)) {
			client.getItems().deleteItem2(995, TICKET_COST);
			pot += (TICKET_COST - TICKET_TAX);
			ticketEntrance.put(number, client.playerName.toLowerCase());
			LotteryIO.saveNumber(number, client.playerName.toLowerCase());
			LotteryIO.saveConfig();
			ticketsBought ++;
			client.sendMessage("You've entered the lottery and bought the number: "+number+".");
			Client.sendGlobalMessage("[Lottery] "+Misc.ucFirst(client.playerName)+" has entered the lottery!");
			if (!announcing && pot > 9000000) {
				announcing = true;
			}
			if (announcing) {
				announceLottery();
			}
			if (pot > START_DRAW_RANGE && !canStart) {
				CycleEventHandler.getSingleton().addEvent(null, new CycleEvent() {

					@Override
					public void execute(CycleEventContainer container) {
						Client.sendGlobalMessage("[Lottery] Lottery Drawing will now commence!");
						canStart = true;
						container.stop();
					}

					@Override
					public void stop() {
						startDraw();
					}

				}, 5);
			}
		}
	}

	/**
	 * Starts the announcing of a lottery jackpot
	 */
	public static void announceLottery() {
		CycleEventHandler.getSingleton().addEvent(null, new CycleEvent() {

			@Override
			public void execute(CycleEventContainer container) {
				if (canStart || !announcing) {
					container.stop();
					return;
				}
				Client.sendGlobalMessage("[Lottery] The Lottery JackPot is currently at "+NumberFormat.getInstance().format(pot)+"gp!");
			}

			@Override
			public void stop() {
				// TODO Auto-generated method stub

			}

		}, 500);
	}

	/**
	 * Starts the drawing of a lottery number and rewards the winner
	 */
	public static void startDraw() {
		CycleEventHandler.getSingleton().addEvent(null, new CycleEvent() {

			@Override
			public void execute(CycleEventContainer container) {
				if (canStart) {
					lotteryRolled = (int) (Math.random() * (LOTTERY_DRAW_MAX + ticketsBought));
					try {
						BufferedReader reader = new BufferedReader(new FileReader(LotteryIO.LOTTERY_NUMBERS));
						String line = null;
						try {
							while ((line = reader.readLine()) != null) {
								String[] valuesArray = line.split("\t");
								int number = Integer.parseInt(valuesArray[0]);
								if (!ticketEntrance.containsKey(lotteryRolled)) {
									Client.sendGlobalMessage("[Lottery] No lucky winners won the Lottery JackPot.");
									Client.sendGlobalMessage("[Lottery] BETTER LUCK NEXT TIME!");
									container.stop();
									return;
								}

								if (number == lotteryRolled) {
									String name = valuesArray[1];
									checkWinner(name, pot);
									Client.sendGlobalMessage("[Lottery] "+Misc.ucFirst(name)+" has won the lottery!");
									container.stop();
									break;
								}
							}
						} finally {
							reader.close();
						}
					} catch (IOException e) {
						e.printStackTrace();
					}
				}
			}

			@Override
			public void stop() {
				canStart = false;
				ticketEntrance.clear();
				announcing = false;
				ticketEntrance.clear();
				LotteryIO.deleteNumbersFromFile();
				ticketsBought = 0;
			}

		}, 20);
	}

	/**
	 * Checks if a player is online or offline
	 * @param name
	 * 			the player checking for
	 * @return
	 * 			online/offline
	 */
	private static Client getClient(String name) {
		for (Player player : PlayerHandler.players) {
			if (player != null && player.playerName.toLowerCase().equalsIgnoreCase(name.toLowerCase())) {
				return (Client) player;
			}
		}
		return null;
	}

	/**
	 * Checks to see if the lottery winner is online
	 * if offline, saves user and jackpot to an external file
	 * @param winner
	 * 			the winner's name
	 * @param pot
	 * 			the jackpot amount
	 */
	public static void checkWinner(String winner, int pot) {
		Client client = getClient(winner);
		if (client == null) {
			LotteryIO.saveWinners(winner.toLowerCase(), pot);
		} else {
			client.getItems().addItemToBank(995, pot);
			client.sendMessage("You've collected "+pot+" from winning the lottery!");
			client.sendMessage("Its been deposited to your bank.");
		}
		LotteryConfig.pot = 0;
		LotteryIO.saveConfig();
	}

	/**
	 * Checks to see if a player's won a previous lottery jackpot
	 * @param client
	 * 			the player
	 */
	public static void checkWinners(Client client) {
		try {
			BufferedReader reader = new BufferedReader(new FileReader("./data/lottery/unclaimedwinners.txt"));
			String line = null;
			try {
				while ((line = reader.readLine()) != null) {
					String[] valuesArray = line.split("\t");
					String playerName = valuesArray[0];
					int pot = Integer.valueOf(valuesArray[1]);
					if (playerName.equalsIgnoreCase(client.playerName.toLowerCase())) {
						client.getItems().addItemToBank(995, pot);
						client.sendMessage("You've collected "+pot+" from winning the lottery!");
						client.sendMessage("Its been deposited to your bank.");
						LotteryIO.deleteWinnerFromFile(playerName, pot);
						break;
					}
				}
			} finally {
				reader.close();
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}