package com.massivecraft.factions.engine;

import com.massivecraft.factions.Rel;
import com.massivecraft.factions.entity.BoardColl;
import com.massivecraft.factions.entity.Faction;
import com.massivecraft.factions.entity.MConf;
import com.massivecraft.factions.entity.MFlag;
import com.massivecraft.factions.entity.MPlayer;
import com.massivecraft.massivecore.Engine;
import com.massivecraft.massivecore.ps.PS;
import com.massivecraft.massivecore.util.MUtil;
import com.massivecraft.massivecore.util.Txt;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.player.PlayerCommandPreprocessEvent;

import java.util.List;

public class EngineDenyCommands extends Engine
{
	// -------------------------------------------- //
	// INSTANCE & CONSTRUCT
	// -------------------------------------------- //
	
	private static EngineDenyCommands i = new EngineDenyCommands();
	public static EngineDenyCommands get() { return i; }

	// -------------------------------------------- //
	// DENY COMMANDS
	// -------------------------------------------- //
	
	@EventHandler(priority = EventPriority.LOW, ignoreCancelled = true)
	public void denyCommands(PlayerCommandPreprocessEvent event)
	{
		// If a player is trying to run a command ...
		Player player = event.getPlayer();
		if (MUtil.isntPlayer(player)) return;
		MPlayer mplayer = MPlayer.get(player);
		
		// ... and the player is not overriding ...
		if (mplayer.isOverriding()) return;
		
		// ... clean up the command ...
		String command = event.getMessage();
		command = Txt.removeLeadingCommandDust(command);
		command = command.toLowerCase();
		command = command.trim();
		
		// ... the command may be denied for members of permanent factions ...
		if (mplayer.hasFaction() && mplayer.getFaction().getFlag(MFlag.getFlagPermanent()) && MUtil.containsCommand(command, MConf.get().denyCommandsPermanentFactionMember))
		{
			mplayer.msg("<b>You can't use \"<h>/%s<b>\" as member of a permanent faction.", command);
			event.setCancelled(true);
			return;
		}
		
		// ... if there is a faction at the players location we fetch the relation now ...
		PS ps = PS.valueOf(player.getLocation()).getChunk(true);
		Faction factionAtPs = BoardColl.get().getFactionAt(ps);
		Rel factionAtRel = null;
		
		if (factionAtPs != null && ! factionAtPs.isNone())
		{
			factionAtRel = factionAtPs.getRelationTo(mplayer);
		}
		
		// ... there maybe be a player in the distance that denies the command ...
		if (MConf.get().denyCommandsDistance > -1 && ! MConf.get().denyCommandsDistanceBypassIn.contains(factionAtRel))
		{	
			for (Player otherplayer : player.getWorld().getPlayers())
			{
				MPlayer othermplayer = MPlayer.get(otherplayer);
				if (othermplayer == mplayer) continue;
				
				double distance = player.getLocation().distance(otherplayer.getLocation());
				if (MConf.get().denyCommandsDistance > distance) continue;
				
				Rel playerRel = mplayer.getRelationTo(othermplayer);
				if ( ! MConf.get().denyCommandsDistanceRelation.containsKey(playerRel)) continue;
				
				String desc = playerRel.getDescPlayerOne();
				
				mplayer.msg("<b>You can't use \"<h>/%s<b>\" as there is <h>%s<b> nearby.", command, desc);
				event.setCancelled(true);
				return;
			}
		}
		
		// ... if there is no relation here then there are no further checks ...
		if (factionAtRel == null) return;
		
		List<String> deniedCommands = MConf.get().denyCommandsTerritoryRelation.get(factionAtRel);
		if (deniedCommands == null) return;
		if ( ! MUtil.containsCommand(command, deniedCommands)) return;
		
		mplayer.msg("<b>You can't use \"<h>/%s<b>\" in %s territory.", command, Txt.getNicedEnum(factionAtRel));
		event.setCancelled(true);
	}
	
}