package fr.lunamc;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Random;

import org.bukkit.Bukkit;
import org.bukkit.Server;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.AsyncPlayerChatEvent;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class LunaWelcome extends JavaPlugin implements Listener {
	// ===== Begin configuration ===== //

	// Message templates
	private List<String> messages;

	// Command templates
	private List<String> commands;

	// Error message if another entity than a player executes the command
	private String requirePlayer;

	// Error message if there is no player who has logged in for the first time
	private String requireNewbie;

	// ===== End configuration ===== //

	// Random
	private final Random random = new Random();

	// Last player who joined the server
	private Player last;

	@Override
	public void onEnable() {
		// Load config
		FileConfiguration config = this.getConfig();
		this.saveDefaultConfig();

		this.messages = new ArrayList<>();
		for(String msg : config.getStringList("messages"))
			this.messages.add(msg.replaceAll("&([0-9a-fk-or])", "§$1"));

		this.commands = new ArrayList<>();
		for(String cmd : config.getStringList("command"))
			this.commands.add(cmd.replaceAll("&([0-9a-fk-or])", "§$2"));

		if(this.messages.isEmpty()) {
			this.getLogger().warning("No message provided, deactivation.");

			Bukkit.getPluginManager().disablePlugin(this);
			return;
		}

		this.requirePlayer = config.getString("error-messages.requirePlayer", "Vous devez être un joueur.");
		this.requireNewbie = config.getString("error-messages.requireNewbie", "Aucun nouveau joueur.");

		// Set command executor
		this.getCommand("bienvenue").setExecutor((sender, command, label, args) -> {
			// Verify that the executor is a player (hello console)
			if(!(sender instanceof Player)) {
				sender.sendMessage(requirePlayer);

				return true;
			}

			// Check if there is a player who has joined
			if(last == null) {
				sender.sendMessage(requireNewbie);

				return true;
			}

			// Pick message
			String message = ((String)this.messages.get(this.random.nextInt(this.messages.size()))).replaceAll("\\Q${player}\\E", this.last.getDisplayName());
			String cmd = ((String)this.commands.get(this.random.nextInt(this.commands.size()))).replaceAll("%player%", this.last.getDisplayName());

			// Send an event so that plugins can apply the plugin formatting
			AsyncPlayerChatEvent e = new AsyncPlayerChatEvent(false, (Player) sender, message, new HashSet<>(Bukkit.getOnlinePlayers()));
			Bukkit.getPluginManager().callEvent(e);
			// Send the message
			e.getRecipients().forEach(p -> p.sendMessage(e.getFormat()));

			return true;
		});

		// Register our event
		Bukkit.getPluginManager().registerEvents(this, this);
	}

	@EventHandler
	public void onPlayerJoin(PlayerJoinEvent e) {
		Player p = e.getPlayer();

		if(!p.hasPlayedBefore())
			last = p;
	}

	private void dispatchCommandSync(final String cmd) {
		final Server server = this.getServer();

		this.getServer().getScheduler().runTask(this, () -> server.dispatchCommand(server.getConsoleSender(), cmd));
	}
}