package com.redstoner.modules.friends;

import java.lang.reflect.Method;
import java.util.Set;
import java.util.UUID;

import org.bukkit.Bukkit;
import org.bukkit.OfflinePlayer;
import org.bukkit.Sound;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerQuitEvent;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;

import com.nemez.cmdmgr.Command;
import com.redstoner.annotations.AutoRegisterListener;
import com.redstoner.annotations.Commands;
import com.redstoner.annotations.Version;
import com.redstoner.coremods.moduleLoader.ModuleLoader;
import com.redstoner.misc.CommandHolderType;
import com.redstoner.misc.Utils;
import com.redstoner.modules.CoreModule;
import com.redstoner.modules.Module;
import com.redstoner.modules.datamanager.DataManager;

@AutoRegisterListener
@Commands(CommandHolderType.File)
@Version(major = 5, minor = 0, revision = 0, compatible = 4)
public class Friends implements CoreModule {
	@EventHandler(priority = EventPriority.MONITOR)
	public void onPlayerJoin(PlayerJoinEvent e) {
		JSONArray friended_by = (JSONArray) DataManager.getOrDefault(e.getPlayer(), "friended_by", new JSONArray());

		for (Object obj : friended_by) {
			UUID uuid = UUID.fromString((String) obj);
			Player p = Bukkit.getPlayer(uuid);

			if (p != null && p.canSee(e.getPlayer())) {
				getLogger().message(p, "Your friend &e" + e.getPlayer().getDisplayName() + "&7 just joined!");
				p.playSound(p.getLocation(), Sound.ENTITY_CHICKEN_EGG, 1, 1);
			}
		}

		JSONArray notifications = (JSONArray) DataManager.getOrDefault(e.getPlayer(), "scheduled_notifications", new JSONArray());

		for (Object obj : notifications) {
			getLogger().message(e.getPlayer(), (String) obj);
		}
	}

	@EventHandler(priority = EventPriority.MONITOR)
	public void onPlayerLeave(PlayerQuitEvent e) {
		JSONArray friended_by = (JSONArray) DataManager.getOrDefault(e.getPlayer(), "friended_by", new JSONArray());

		for (Object obj : friended_by) {
			UUID uuid = UUID.fromString((String) obj);
			Player p = Bukkit.getPlayer(uuid);

			if (p != null && p.canSee(e.getPlayer())) {
				getLogger().message(p, "Your friend &e" + e.getPlayer().getDisplayName() + "&7 just left!");
				p.playSound(p.getLocation(), Sound.ENTITY_CHICKEN_EGG, 1, 1);
			}
		}
	}

	@SuppressWarnings({ "unchecked", "deprecation" })
	@Command(hook = "add")
	public boolean add(CommandSender sender, String target) {
		if (target.equalsIgnoreCase("CONSOLE")) {
			getLogger().message(sender, true, "You can't add console to your friends!");
			return true;
		}

		OfflinePlayer p = Bukkit.getPlayer(target);

		if (p == null) p = Bukkit.getOfflinePlayer(target);
		if (p == null) {
			getLogger().message(sender, true, "That player couldn't be found!");
			return true;
		}

		JSONArray friends = ((JSONArray) DataManager.getOrDefault(sender, "friends", new JSONArray()));

		if (friends.contains(p.getUniqueId().toString())) {
			getLogger().message(sender, true, "You are already friends with this person!");
			return true;
		}

		friends.add(p.getUniqueId().toString());
		DataManager.setData(sender, "friends", friends);
		DataManager.save(sender);

		JSONArray friended_by = ((JSONArray) DataManager.getOrDefault(p.getUniqueId().toString(), "friended_by", new JSONArray()));
		friended_by.add(getID(sender));
		DataManager.setData(p.getUniqueId().toString(), "friended_by", friended_by);
		
		DataManager.save(p.getUniqueId().toString());

		getLogger().message(sender, "You are now friends with &e" + p.getName() + "&7!");

		if (p instanceof Player) {
			getLogger().message((Player) p, "&e" + Utils.getName(sender) + "&7 added you as a friend!");
		} else {
			JSONArray notifications = (JSONArray) DataManager.getOrDefault(p.getUniqueId().toString(), "scheduled_notifications", new JSONArray());

			notifications.add("&e" + Utils.getName(sender) + "&7 added you as a friend!");
			notifications.remove("&e" + Utils.getName(sender) + "&7 removed you as a friend!");

			DataManager.setData(p.getUniqueId().toString(), "scheduled_notifications", notifications);
		}

		return true;
	}

	@SuppressWarnings({ "deprecation", "unchecked" })
	@Command(hook = "add_grouped")
	public boolean add_grouped(CommandSender sender, String target, String group) {
		if (target.equalsIgnoreCase("CONSOLE")) {
			getLogger().message(sender, true, "You can't add console to your friends!");
			return true;
		}

		OfflinePlayer p = Bukkit.getPlayer(target);

		if (p == null) p = Bukkit.getOfflinePlayer(target);
		if (p == null) {
			getLogger().message(sender, true, "That player couldn't be found!");
			return true;
		}

		JSONArray friends = ((JSONArray) DataManager.getOrDefault(sender, "groups." + group, new JSONArray()));

		if (friends.contains(p.getUniqueId().toString())) {
			getLogger().message(sender, true, "This person already is part of that friendsgroup!");
			return true;
		}

		friends.add(p.getUniqueId().toString());
		DataManager.setData(sender, "groups." + group, friends);
		DataManager.save(sender);

		getLogger().message(sender, "&e" + p.getName() + "&7 is now part of the group &e" + group + "&7!");

		if (p instanceof Player) {
			getLogger().message((Player) p, "&e" + Utils.getName(sender) + " &7added you to their friendsgroup &e" + group + "&7!");
		} else {
			JSONArray notifications = (JSONArray) DataManager.getOrDefault(p.getUniqueId().toString(), "scheduled_notifications", new JSONArray());

			notifications.add("&e" + Utils.getName(sender) + " &7added you to their friendsgroup &e" + group + "&7!");
			notifications.remove("&e" + Utils.getName(sender) + " &7removed you from their friendsgroup &e" + group + "&7!");

			DataManager.setData(p.getUniqueId().toString(), "scheduled_notifications", notifications);
		}

		return true;
	}

	@SuppressWarnings({ "deprecation", "unchecked" })
	@Command(hook = "del")
	public boolean del(CommandSender sender, String target) {
		if (target.equalsIgnoreCase("CONSOLE")) {
			getLogger().message(sender, true, "You can't add console to your friends!");
			return true;
		}

		OfflinePlayer p = Bukkit.getPlayer(target);

		if (p == null) p = Bukkit.getOfflinePlayer(target);
		if (p == null) {
			getLogger().message(sender, true, "That player couldn't be found!");
			return true;
		}

		JSONArray friends = ((JSONArray) DataManager.getOrDefault(sender, "friends", new JSONArray()));

		if (!friends.contains(p.getUniqueId().toString())) {
			getLogger().message(sender, true, "You are not friends with that player!");
			return true;
		}

		friends.remove(p.getUniqueId().toString());
		DataManager.setData(sender, "friends", friends);
		DataManager.save(sender);

		JSONArray friended_by = ((JSONArray) DataManager.getOrDefault(p.getUniqueId().toString(), "friended_by", new JSONArray()));
		DataManager.setData(p.getUniqueId().toString(), "friended_by", friended_by);
		friended_by.remove(getID(sender));

		DataManager.save(p.getUniqueId().toString());

		getLogger().message(sender, "You are no longer friends with &e" + p.getName() + "&7!");

		if (p instanceof Player) {
			getLogger().message((Player) p, "&e" + Utils.getName(sender) + "&7 removed you as a friend!");
		} else {
			JSONArray notifications = (JSONArray) DataManager.getOrDefault(p.getUniqueId().toString(), "scheduled_notifications", new JSONArray());

			notifications.add("&e" + Utils.getName(sender) + "&7 removed you as a friend!");
			notifications.remove("&e" + Utils.getName(sender) + "&7 added you as a friend!");

			DataManager.setData(p.getUniqueId().toString(), "scheduled_notifications", notifications);
		}

		return true;
	}

	@SuppressWarnings({ "deprecation", "unchecked" })
	@Command(hook = "del_grouped")
	public boolean del_grouped(CommandSender sender, String target, String group) {
		if (target.equalsIgnoreCase("CONSOLE")) {
			getLogger().message(sender, true, "You can't add console to your friends!");
			return true;
		}

		OfflinePlayer p = Bukkit.getPlayer(target);

		if (p == null) p = Bukkit.getOfflinePlayer(target);
		if (p == null) {
			getLogger().message(sender, true, "That player couldn't be found!");
			return true;
		}

		JSONArray friends = ((JSONArray) DataManager.getOrDefault(sender, "groups." + group, new JSONArray()));

		if (!friends.contains(p.getUniqueId().toString())) {
			getLogger().message(sender, true, "This person isn't a part of that friendsgroup!");
			return true;
		}

		friends.add(p.getUniqueId().toString());
		DataManager.setData(sender, "groups." + group, friends);
		DataManager.save(sender);

		getLogger().message(sender, "&e" + p.getName() + "&7 is no longer a part of the group &e" + group + "&7!");

		if (p instanceof Player) {
			getLogger().message((Player) p, "&e" + Utils.getName(sender) + " &7removed you from their friendsgroup &e" + group + "&7!");
		} else {
			JSONArray notifications = (JSONArray) DataManager.getOrDefault(p.getUniqueId().toString(), "scheduled_notifications", new JSONArray());

			notifications.add("&e" + Utils.getName(sender) + " &7removed you from their friendsgroup &e" + group + "&7!");
			notifications.remove("&e" + Utils.getName(sender) + " &7added you to their friendsgroup &e" + group + "&7!");

			DataManager.setData(p.getUniqueId().toString(), "scheduled_notifications", notifications);
		}

		return true;
	}

	@Command(hook = "list")
	public boolean list(CommandSender sender) {
		JSONArray friends = (JSONArray) DataManager.getOrDefault(sender, "friends", new JSONArray());

		if (friends.size() == 0) {
			getLogger().message(sender, true, "You didn't add anyone to your friends list yet.");
		} else {
			StringBuilder sb = new StringBuilder();

			for (Object o : friends.toArray()) {
				UUID id = UUID.fromString((String) o);
				Player p = Bukkit.getPlayer(id);

				if (p != null) sb.append(p.getDisplayName() + "&7, ");
				else sb.append("&9" + Bukkit.getOfflinePlayer(id).getName() + "&7, ");
			}

			String out = sb.toString().replaceAll(", $", "");
			getLogger().message(sender, "You have a total of &e" + friends.size() + "&7 friends:", out);
		}

		return true;
	}

	@Command(hook = "list_group")
	public boolean list_group(CommandSender sender, String group) {
		JSONArray friends = (JSONArray) DataManager.getOrDefault(sender, "group." + group, new JSONArray());

		if (friends.size() == 0) {
			getLogger().message(sender, true, "You didn't add anyone to this group yet.");
		} else {
			StringBuilder sb = new StringBuilder();

			for (Object o : friends.toArray()) {
				UUID id = UUID.fromString((String) o);
				Player p = Bukkit.getPlayer(id);

				if (p != null) sb.append(p.getDisplayName() + "&7, ");
				else sb.append("&9" + Bukkit.getOfflinePlayer(id).getName() + "&7, ");
			}

			String out = sb.toString().replaceAll(", $", "");
			getLogger().message(sender, "You have a total of &e" + friends.size() + "&7 friends added to this group:", out);
		}

		return true;
	}

	@Command(hook = "list_groups")
	public boolean list_groups(CommandSender sender) {
		JSONObject raw = (JSONObject) DataManager.getOrDefault(sender, null, new JSONObject());
		Set<?> keys = raw.keySet();

		if (keys.size() == 0 || (keys.contains("friends") && keys.size() == 1)) {
			getLogger().message(sender, true, "You don't have any custom groups made yet.");
			return true;
		} else {
			StringBuilder sb = new StringBuilder();

			for (Object o : keys) {
				sb.append("&e" + ((String) o).substring(6) + "&7, ");
			}

			String out = sb.toString().replaceAll(", $", "");
			getLogger().message(sender, "", out);
		}

		return true;
	}

	public static boolean isFriend(CommandSender player, CommandSender friend) {
		return isFriend(player, friend, null);
	}

	public static boolean isFriend(CommandSender player, CommandSender friend, String condition) {
		try {
			Module mod = ModuleLoader.getModule("Friends");
			Method m = mod.getClass().getDeclaredMethod("isFriend_", String.class);

			return (boolean) m.invoke(mod, player, friend, condition);
		} catch (Exception e) {
			return false;
		}
	}

	protected boolean isFriend_(CommandSender player, CommandSender friend, String group) {
		if (group == null) group = "friends";
		else if (!group.startsWith("group.")) group = "group." + group;

		JSONArray array = (JSONArray) DataManager.getOrDefault(player, group, new JSONArray());
		return array.contains(getID(friend));
	}

	private final String getID(CommandSender sender) {
		if (sender instanceof Player) return ((Player) sender).getUniqueId().toString();
		else return sender.getName();
	}
}