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path: root/src/main/java/com/redstoner/modules/saylol/Saylol.java
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package com.redstoner.modules.saylol;

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.JsonManager;
import com.redstoner.misc.Main;
import com.redstoner.misc.Utils;
import com.redstoner.modules.Module;
import com.redstoner.modules.ignore.Ignore;
import net.nemez.chatapi.ChatAPI;
import net.nemez.chatapi.click.ClickCallback;
import net.nemez.chatapi.click.Message;
import org.bukkit.Bukkit;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.player.PlayerQuitEvent;
import org.json.simple.JSONArray;

import java.io.File;
import java.util.*;

@AutoRegisterListener
@Commands (CommandHolderType.File)
@Version (major = 5, minor = 2, revision = 0, compatible = 4)
public class Saylol implements Module {
	private File lolLocation = new File(Main.plugin.getDataFolder(), "lol.json");

	private JSONArray lols, handlers;

	private Map<CommandSender, List<Integer>> searchCache = new HashMap<>();

	private final String LOL_PREFIX = "§8[§blol§8] ";
	private final int    PAGE_SIZE  = 10;

	private long lastLol = 0;

	@SuppressWarnings ("unchecked")
	@Override
	public boolean onEnable() {
		lols = JsonManager.getArray(lolLocation);
		if (lols == null) lols = new JSONArray();

		handlers = new JSONArray();
		for (int i = 0; i < lols.size(); i++) {
			handlers.add(new ClickCallback(true, true, "") {
				@Override
				public void run(CommandSender sender) {
					if (handlers.contains(this))
						clickAction((Player) sender, handlers.indexOf(this));
					else
						getLogger().message(sender, true, "That lol no longer exists!");
				}
			});
		}

		return true;
	}

	@Override
	public void onDisable() {
		saveLolsSync();
	}

	@SuppressWarnings ("unchecked")
	@Command (hook = "addlol")
	public boolean addLol(CommandSender sender, String text) {
		if (lols.contains(text)) {
			getLogger().message(sender, true, "This lol already exists!");
		} else {
			lols.add("&e" + text);

			handlers.add(new ClickCallback(true, true, "") {
				@Override
				public void run(CommandSender sender) {
					if (handlers.contains(this))
						clickAction((Player) sender, handlers.indexOf(this));
					else
						getLogger().message(sender, true, "That lol no longer exists!");
				}
			});

			saveLols();
			searchCache.clear();

			getLogger().message(sender, "Successfully added a new lol!");
		}

		return true;
	}

	@Command (hook = "dellol")
	public boolean delLol(CommandSender sender, int id) {
		if (warnNoLols(sender)) return true;
		if (warnLolOutOfBounds(sender, id)) return true;

		handlers.remove(id);
		saveLols();
		searchCache.clear();

		getLogger().message(sender, "Successfully deleted the lol: " + lols.remove(id));
		return true;
	}

	@SuppressWarnings ("unchecked")
	@Command (hook = "setlol")
	public boolean setLol(CommandSender sender, int id, String text) {
		if (warnNoLols(sender)) return true;
		if (warnLolOutOfBounds(sender, id)) return true;

		lols.set(id, text);
		saveLols();
		searchCache.clear();

		getLogger().message(sender, "Successfully changed the lol: &e" + lols.get(id) + " &7to: &e" + text);
		return true;
	}

	@Command (hook = "lolid")
	public boolean lolId(CommandSender sender, int id) {
		if (warnNoLols(sender)) return true;
		if (warnLolOutOfBounds(sender, id)) return true;

		long time = System.currentTimeMillis();
		if (warnTime(sender, time)) return true;

		String name = getSenderName(sender);

		Utils.broadcast(
				LOL_PREFIX,
				ChatAPI.colorify(
						null,
						name + "&8: &e" + lols.get(id)
				),
				recipient -> recipient.hasPermission("utils.lol.see")
		);

		lastLol = time;
		return true;
	}

	@Command (hook = "saylol")
	public boolean saylol(CommandSender sender) {
		if (warnNoLols(sender)) return true;

		long time = System.currentTimeMillis();
		if (warnTime(sender, time)) return true;

		String name   = getSenderName(sender);
		Random random = new Random();

		int id = random.nextInt(lols.size());

		Utils.broadcast(
				LOL_PREFIX,
				ChatAPI.colorify(
						null,
						name + "&8: &e" + lols.get(id)
				),
				ModuleLoader.exists("Ignore") ? Ignore.getIgnoredBy(sender) : null
		);

		lastLol = time;
		return true;
	}

	@Command (hook = "listlols")
	public boolean listLols(CommandSender sender, int page) {
		searchCache.put(sender, Arrays.asList(-1));

		if (warnNoLols(sender)) return true;

		List<Integer> ids = new ArrayList<>();

		for (int i = 0; i < lols.size(); i++) {
			ids.add(i);
		}

		printPaged(sender, ids, page);
		return true;
	}

	@Command (hook = "listlolsdef")
	public boolean listLolsDefault(CommandSender sender) {
		return listLols(sender, 1);
	}

	@Command (hook = "searchlol")
	public boolean search(CommandSender sender, boolean sensitive, String text) {
		searchCache.remove(sender);

		List<Integer> results = new ArrayList<>();

		if (!sensitive)
			text = text.toLowerCase();
		for (int i = 0; i < lols.size(); i++) {
			String lol = (String) lols.get(i);

			if ((sensitive ? lol : lol.toLowerCase()).contains(text)) results.add(i);
		}

		if (results.isEmpty()) {
			getLogger().message(sender, "&cCouldn't find any matching lols.");
			return true;
		}

		searchCache.put(sender, results);

		Message m = new Message(sender, null);
		m.appendText(getLogger().getHeader().replace("\n", ""));

		appendResults(m, results);
		m.send();
		return true;
	}

	@Command (hook = "matchlol")
	public boolean match(CommandSender sender, boolean sensitive, String regex) {
		searchCache.remove(sender);

		List<Integer> results = new ArrayList<>();

		if (!sensitive) regex = regex.toLowerCase();

		for (int i = 0; i < lols.size(); i++) {
			String lol = (String) lols.get(i);
			if ((sensitive ? lol : lol.toLowerCase()).matches(regex)) results.add(i);
		}

		if (results.isEmpty()) {
			getLogger().message(sender, "&cCouldn't find any matching lols.");
			return true;
		}

		searchCache.put(sender, results);

		Message m = new Message(sender, null);
		m.appendText(getLogger().getHeader().replace("\n", ""));

		appendResults(m, results);
		m.send();
		return true;
	}

	@Command (hook = "page")
	public boolean page(CommandSender sender, int page) {
		List<Integer> results = searchCache.get(sender);

		if (results == null || results.size() == 0) {
			getLogger().message(sender, true, "There's nothing to page through. This command pages through the last lol command's output.");
			return true;
		}

		if (results.get(0) == -1) {
			listLols(sender, page);
		} else {
			printPaged(sender, results, page);
		}

		return true;
	}

	@EventHandler
	public void onLeave(PlayerQuitEvent e) {
		searchCache.remove(e.getPlayer());
	}

	private int getMaxPage(int size) {
		return (int) Math.ceil(size / (double) PAGE_SIZE);
	}

	private void saveLols() {
		JsonManager.save(lols, lolLocation);
	}

	private void saveLolsSync() {
		JsonManager.saveSync(lols, lolLocation);
	}

	private ClickCallback getCallback(int index) {
		return (ClickCallback) handlers.get(index);
	}

	private void clickAction(Player player, int index) {
		if (player.hasPermission("utils.lol.id"))
			Bukkit.getScheduler().callSyncMethod(ModuleLoader.getPlugin(), () -> Bukkit.dispatchCommand(player, "lol id " + index));
	}

	private String getSenderName(CommandSender sender) {
		return sender instanceof Player ? ((Player) sender).getDisplayName() : "&9" + sender.getName();
	}

	private boolean warnNoLols(CommandSender sender) {
		if (lols.size() == 0) {
			getLogger().message(sender, true, "There are no lols yet!");
			return true;
		}

		return false;
	}

	private boolean warnTime(CommandSender sender, long time) {
		if (time - lastLol < 15000) {
			int secs = (14 - (int) Math.ceil((time - lastLol) / 1000));
			getLogger().message(sender, true, "You can't use saylol for another " + secs + "s.");
			return true;
		}

		return false;
	}

	private boolean warnLolOutOfBounds(CommandSender sender, int id) {
		if (id < 0 || id >= lols.size()) {
			getLogger().message(sender, true, "The ID must be at least 0 and at most " + (lols.size() - 1));
			return true;
		}

		return false;
	}

	private boolean warnPageOutOfBounds(CommandSender sender, int page, int pages) {
		if (page <= 0) {
			getLogger().message(sender, true, "Page number too small, must be at least 1!");
			return true;
		}

		if (page > pages) {
			getLogger().message(sender, true, "Page number too big, must be at most " + pages + "!");
			return true;
		}

		return false;
	}

	private void appendResults(Message m, List<Integer> results) {
		int size = results.size();
		if (size > PAGE_SIZE) m.appendText(" &ePage 1/" + getMaxPage(size) + ":");

		for (int i = 0; i < size && i < PAGE_SIZE; i++) {
			int id = results.get(i);
			m.appendCallback("\n&a" + id + "&8: &e" + lols.get(id), getCallback(id));
		}

		m.appendText("\n&7Use /lol page <number> to look at other pages.");
	}

	private void printPaged(CommandSender sender, List<Integer> results, int page) {
		page = page - 1;
		int start = page * PAGE_SIZE;
		int end   = start + PAGE_SIZE;
		int pages = getMaxPage(results.size());

		if (warnPageOutOfBounds(sender, page, pages)) return;

		Message m = new Message(sender, null);
		m.appendText(getLogger().getHeader().replace("\n", ""));
		m.appendText(" &ePage " + (page + 1) + "/" + pages + ":");

		for (int i = start; i < end && i < results.size(); i++) {
			int id = results.get(i);
			m.appendCallback("\n&a" + id + "&8: &e" + lols.get(id), getCallback(id));
		}

		m.send();
	}
}