package pw.kaboom.commandspy;

import java.util.Set;
import java.util.UUID;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.command.ConsoleCommandSender;
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.block.SignChangeEvent;
import org.bukkit.event.player.PlayerCommandPreprocessEvent;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.java.JavaPlugin;

public final class Main extends JavaPlugin implements CommandExecutor, Listener {
    private FileConfiguration config;

    @Override
    public void onEnable() {
        config = getConfig();
        this.getCommand("commandspy").setExecutor(this);
        this.getServer().getPluginManager().registerEvents(this, this);
    }

    private void enableCommandSpy(final Player player, final Plugin plugin) {
        plugin.getConfig().set(player.getUniqueId().toString(), true);
        plugin.saveConfig();
        player.sendMessage("Successfully enabled CommandSpy");
    }

    private void disableCommandSpy(final Player player, final Plugin plugin) {
        plugin.getConfig().set(player.getUniqueId().toString(), null);
        plugin.saveConfig();
        player.sendMessage("Successfully disabled CommandSpy");
    }

    @Override
    public boolean onCommand(final CommandSender sender, final Command cmd, final String label,
                             final String[] args) {
        if (sender instanceof ConsoleCommandSender) {
            sender.sendMessage("Command has to be run by a player");
            return true;
        }

        final Player player = (Player) sender;
        final JavaPlugin plugin = JavaPlugin.getPlugin(Main.class);

        if (args.length == 0) {
            if (config.contains(player.getUniqueId().toString())) {
                disableCommandSpy(player, plugin);
            } else {
                enableCommandSpy(player, plugin);
            }
        } else if ("on".equalsIgnoreCase(args[0])) {
            enableCommandSpy(player, plugin);
        } else if ("off".equalsIgnoreCase(args[0])) {
            disableCommandSpy(player, plugin);
        }
        config = plugin.getConfig();
        return true;
    }

    @EventHandler
    void onPlayerCommandPreprocess(final PlayerCommandPreprocessEvent event) {
        if (event.isCancelled()) {
            return;
        }

        Set<String> uuids = config.getKeys(false);
        ChatColor color = (uuids.contains(event.getPlayer().getUniqueId().toString()))
            ? ChatColor.YELLOW : ChatColor.AQUA;

        for (String uuidString : uuids) {
            UUID uuid = UUID.fromString(uuidString);

            if (Bukkit.getPlayer(uuid) != null) {
                Bukkit.getPlayer(uuid).sendMessage(
                        color + ""
                                + event.getPlayer().getName() + ""
                                + color + ": "
                                + event.getMessage()
                                );
            }
        }
    }

    @EventHandler
    void onSignChange(final SignChangeEvent event) {
        Set<String> uuids = config.getKeys(false);
        ChatColor color = (uuids.contains(event.getPlayer().getUniqueId().toString()))
            ? ChatColor.YELLOW : ChatColor.AQUA;

        for (String uuidString : uuids) {
            UUID uuid = UUID.fromString(uuidString);

            if (Bukkit.getPlayer(uuid) != null) {
                Bukkit.getPlayer(uuid).sendMessage(
                        color + ""
                                + event.getPlayer().getName() + ""
                                + color
                                + " created a sign with contents:"
                                );
                for (String line: event.getLines()) {
                    Bukkit.getPlayer(uuid).sendMessage(color + "  " + line);
                }
            }
        }
    }
}