Saber-Factions/src/main/java/com/massivecraft/factions/cmd/CmdList.java

package com.massivecraft.factions.cmd;

import com.massivecraft.factions.Conf;
import com.massivecraft.factions.Faction;
import com.massivecraft.factions.Factions;
import com.massivecraft.factions.P;
import com.massivecraft.factions.struct.Permission;
import com.massivecraft.factions.zcore.util.TL;
import com.massivecraft.factions.zcore.util.TagUtil;

import java.util.*;


public class CmdList extends FCommand {

	private String[] defaults = new String[3];

	public CmdList() {
		super();
		this.aliases.add("list");
		this.aliases.add("ls");

		// default values in case user has old config
		defaults[0] = "&e&m----------&r&e[ &2Faction List &9{pagenumber}&e/&9{pagecount} &e]&m----------";
		defaults[1] = "<i>Factionless<i> {factionless} online";
		defaults[2] = "<a>{faction} <i>{online} / {members} online, <a>Land / Power / Maxpower: <i>{chunks}/{power}/{maxPower}";

		//this.requiredArgs.add("");
		this.optionalArgs.put("page", "1");

		this.permission = Permission.LIST.node;
		this.disableOnLock = false;

		senderMustBePlayer = false;
		senderMustBeMember = false;
		senderMustBeModerator = false;
		senderMustBeColeader = false;
		senderMustBeAdmin = false;
	}

	@Override
	public void perform() {
		// if economy is enabled, they're not on the bypass list, and this command has a cost set, make 'em pay
		if (!payForCommand(Conf.econCostList, "to list the factions", "for listing the factions"))
			return;

		ArrayList<Faction> factionList = Factions.getInstance().getAllFactions();
		factionList.remove(Factions.getInstance().getWilderness());
		factionList.remove(Factions.getInstance().getSafeZone());
		factionList.remove(Factions.getInstance().getWarZone());

		// remove exempt factions
		if (fme != null && fme.getPlayer() != null && !fme.getPlayer().hasPermission("factions.show.bypassexempt")) {
			List<String> exemptFactions = P.p.getConfig().getStringList("show-exempt");

			factionList.removeIf(next -> exemptFactions.contains(next.getTag()));
		}

		// Sort by total followers first
		Collections.sort(factionList, (f1, f2) -> {
			int f1Size = f1.getFPlayers().size();
			int f2Size = f2.getFPlayers().size();
			if (f1Size < f2Size) {
				return 1;
			} else if (f1Size > f2Size) {
				return -1;
			}
			return 0;
		});

		// Then sort by how many members are online now
		factionList.sort((f1, f2) -> {
			int f1Size = f1.getFPlayersWhereOnline(true).size();
			int f2Size = f2.getFPlayersWhereOnline(true).size();
			if (f1Size < f2Size) {
				return 1;
			} else if (f1Size > f2Size) {
				return -1;
			}
			return 0;
		});

		ArrayList<String> lines = new ArrayList<>();

		factionList.add(0, Factions.getInstance().getWilderness());

		final int pageheight = 9;
		int pagenumber = this.argAsInt(0, 1);
		int pagecount = (factionList.size() / pageheight) + 1;
		if (pagenumber > pagecount) {
			pagenumber = pagecount;
		} else if (pagenumber < 1) {
			pagenumber = 1;
		}
		int start = (pagenumber - 1) * pageheight;
		int end = start + pageheight;
		if (end > factionList.size()) {
			end = factionList.size();
		}


		String header = p.getConfig().getString("list.header", defaults[0]);
		header = header.replace("{pagenumber}", String.valueOf(pagenumber)).replace("{pagecount}", String.valueOf(pagecount));
		lines.add(p.txt.parse(header));

		for (Faction faction : factionList.subList(start, end)) {
			if (faction.isWilderness()) {
				lines.add(p.txt.parse(TagUtil.parsePlain(faction, p.getConfig().getString("list.factionless", defaults[1]))));
				continue;
			}
			lines.add(p.txt.parse(TagUtil.parsePlain(faction, fme, p.getConfig().getString("list.entry", defaults[2]))));
		}
		sendMessage(lines);
	}

	@Override
	public TL getUsageTranslation() {
		return TL.COMMAND_LIST_DESCRIPTION;
	}
}