package com.massivecraft.factions.listeners;

import com.massivecraft.factions.*;
import com.massivecraft.factions.integration.Worldguard;
import com.massivecraft.factions.struct.Permission;
import com.massivecraft.factions.struct.Relation;
import com.massivecraft.factions.struct.Role;
import com.massivecraft.factions.zcore.fperms.Access;
import com.massivecraft.factions.zcore.fperms.PermissableAction;
import com.massivecraft.factions.zcore.util.TL;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.block.*;
import org.bukkit.inventory.ItemStack;


public class FactionsBlockListener implements Listener {

  public SavageFactions savageFactions;

  public FactionsBlockListener(SavageFactions savageFactions) {
    this.savageFactions = savageFactions;
    }

    @EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
    public void onBlockPlace(BlockPlaceEvent event) {
        if (!event.canBuild()) {
            return;
        }

        // special case for flint&steel, which should only be prevented by DenyUsage list
        if (event.getBlockPlaced().getType() == Material.FIRE) {
            return;
        }

        if (!playerCanBuildDestroyBlock(event.getPlayer(), event.getBlock().getLocation(), "build", false)) {
            event.setCancelled(true);
        }
    }

    @EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
    public void onBlockFromTo(BlockFromToEvent event) {
        if (!Conf.handleExploitLiquidFlow) {
            return;
        }
        if (event.getBlock().isLiquid()) {
            if (event.getToBlock().isEmpty()) {
                Faction from = Board.getInstance().getFactionAt(new FLocation(event.getBlock()));
                Faction to = Board.getInstance().getFactionAt(new FLocation(event.getToBlock()));
                if (from == to) {
                    // not concerned with inter-faction events
                    return;
                }
                // from faction != to faction
                if (to.isNormal()) {
                    if (from.isNormal() && from.getRelationTo(to).isAlly()) {
                        return;
                    }
                    event.setCancelled(true);
                }
            }
        }
    }

  public static boolean playerCanBuildDestroyBlock(Player player, Location location, String action, boolean justCheck) {
    String name = player.getName();
    if (Conf.playersWhoBypassAllProtection.contains(name)) {
      return true;
    }

    FPlayer me = FPlayers.getInstance().getById(player.getUniqueId().toString());
    if (me.isAdminBypassing()) {
      return true;
    }

    FLocation loc = new FLocation(location);
    Faction otherFaction = Board.getInstance().getFactionAt(loc);

    if (otherFaction.isWilderness()) {
      if (Conf.worldGuardBuildPriority && Worldguard.playerCanBuild(player, location)) {
        return true;
      }

      if (! Conf.wildernessDenyBuild || Conf.worldsNoWildernessProtection.contains(location.getWorld().getName())) {
        return true; // This is not faction territory. Use whatever you like here.
      }

      if (! justCheck) {
        me.msg("<b>You can't " + action + " in the wilderness.");
      }

      return false;
    } else if (otherFaction.isSafeZone()) {
      if (Conf.worldGuardBuildPriority && Worldguard.playerCanBuild(player, location)) {
        return true;
      }

      if (! Conf.safeZoneDenyBuild || Permission.MANAGE_SAFE_ZONE.has(player)) {
        return true;
      }

      if (! justCheck) {
        me.msg("<b>You can't " + action + " in a safe zone.");
      }

      return false;
    } else if (otherFaction.isWarZone()) {
      if (Conf.worldGuardBuildPriority && Worldguard.playerCanBuild(player, location)) {
        return true;
      }

      if (! Conf.warZoneDenyBuild || Permission.MANAGE_WAR_ZONE.has(player)) {
        return true;
      }

      if (! justCheck) {
        me.msg("<b>You can't " + action + " in a war zone.");
      }

      return false;
    }
    if (SavageFactions.plugin.getConfig().getBoolean("hcf.raidable", false) && otherFaction.getLandRounded() >= otherFaction.getPowerRounded()) {
      return true;
    }

    Faction myFaction = me.getFaction();
    Relation rel = myFaction.getRelationTo(otherFaction);
    boolean online = otherFaction.hasPlayersOnline();
    boolean pain = ! justCheck && rel.confPainBuild(online);
    boolean deny = rel.confDenyBuild(online);

    Access access = otherFaction.getAccess(me, PermissableAction.fromString(action));
    if (access == Access.ALLOW && ((rel == Relation.ALLY) || (rel == Relation.ENEMY) || (rel == Relation.NEUTRAL) || (rel == Relation.TRUCE))) {
      deny = false;
    }
    // hurt the player for building/destroying in other territory?
    if (pain) {
      player.damage(Conf.actionDeniedPainAmount);

      if (! deny) {
        me.msg("<b>It is painful to try to " + action + " in the territory of " + otherFaction.getTag(myFaction));
      }
    }


    // cancel building/destroying in other territory?
    if (deny) {
      if (! justCheck) {
        me.msg("<b>You can't " + action + " in the territory of " + otherFaction.getTag(myFaction));
      }

      return false;
        }

    // Also cancel and/or cause pain if player doesn't have ownership rights for this claim
    if (Conf.ownedAreasEnabled && (Conf.ownedAreaDenyBuild || Conf.ownedAreaPainBuild) && ! otherFaction.playerHasOwnershipRights(me, loc)) {
      if (! pain && Conf.ownedAreaPainBuild && ! justCheck) {
        player.damage(Conf.actionDeniedPainAmount);
        if (! Conf.ownedAreaDenyBuild) {
          me.msg("<b>It is painful to try to " + action + " in this territory, it is owned by: " + otherFaction.getOwnerListString(loc));
                }
            }
      if (Conf.ownedAreaDenyBuild) {
        if (! justCheck) {
          me.msg("<b>You can't " + action + " in this territory, it is owned by: " + otherFaction.getOwnerListString(loc));
          return false;
        }
      }
    }

    // Check the permission just after making sure the land isn't owned by someone else to avoid bypass.

    if (access != Access.ALLOW && me.getRole() != Role.LEADER) {
      // TODO: Update this once new access values are added other than just allow / deny.
      if (access == Access.DENY) {
        me.msg(TL.GENERIC_NOPERMISSION, action);
        return false;
      } else if (myFaction.getOwnerListString(loc) != null && ! myFaction.getOwnerListString(loc).isEmpty() && ! myFaction.getOwnerListString(loc).contains(player.getName())) {
        me.msg("<b>You can't " + action + " in this territory, it is owned by: " + myFaction.getOwnerListString(loc));
        return false;
      }
    }
    return true;
    }

    @EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
    public void onBlockDamage(BlockDamageEvent event) {
        if (event.getInstaBreak() && !playerCanBuildDestroyBlock(event.getPlayer(), event.getBlock().getLocation(), "destroy", false)) {
            event.setCancelled(true);
        }
    }

    @EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
    public void onBlockPistonExtend(BlockPistonExtendEvent event) {
        if (!Conf.pistonProtectionThroughDenyBuild) {
            return;
        }

        Faction pistonFaction = Board.getInstance().getFactionAt(new FLocation(event.getBlock()));

        // target end-of-the-line empty (air) block which is being pushed into, including if piston itself would extend into air
        Block targetBlock = event.getBlock().getRelative(event.getDirection(), event.getLength() + 1);

        // if potentially pushing into air/water/lava in another territory, we need to check it out
        if ((targetBlock.isEmpty() || targetBlock.isLiquid()) && !canPistonMoveBlock(pistonFaction, targetBlock.getLocation())) {
            event.setCancelled(true);
        }

        /*
         * note that I originally was testing the territory of each affected block, but since I found that pistons can only push
         * up to 12 blocks and the width of any territory is 16 blocks, it should be safe (and much more lightweight) to test
         * only the final target block as done above
         */
    }

    @EventHandler
    public void onVaultPlace(BlockPlaceEvent e) {
        if (e.getItemInHand().getType() == Material.CHEST) {
          ItemStack vault = SavageFactions.plugin.createItem(Material.CHEST, 1, (short) 0, SavageFactions.plugin.color(SavageFactions.plugin.getConfig().getString("fvault.Item.Name")), SavageFactions.plugin.colorList(SavageFactions.plugin.getConfig().getStringList("fvault.Item.Lore")));
            if (e.getItemInHand().isSimilar(vault)) {
                FPlayer fme = FPlayers.getInstance().getByPlayer(e.getPlayer());
                if (fme.getFaction().getVault() != null) {
                    fme.msg(TL.COMMAND_GETVAULT_ALREADYSET);
                    e.setCancelled(true);
                    return;
                }
                FLocation flocation = new FLocation(e.getBlockPlaced().getLocation());
                if (Board.getInstance().getFactionAt(flocation) != fme.getFaction()) {
                    fme.msg(TL.COMMAND_GETVAULT_INVALIDLOCATION);
                    e.setCancelled(true);
                    return;
                }
                Block start = e.getBlockPlaced();
                int radius = 1;
                for (double x = start.getLocation().getX() - radius; x <= start.getLocation().getX() + radius; x++) {
                    for (double y = start.getLocation().getY() - radius; y <= start.getLocation().getY() + radius; y++) {
                        for (double z = start.getLocation().getZ() - radius; z <= start.getLocation().getZ() + radius; z++) {
                            Location blockLoc = new Location(e.getPlayer().getWorld(), x, y, z);
                            if (blockLoc.getX() == start.getLocation().getX() && blockLoc.getY() == start.getLocation().getY() && blockLoc.getZ() == start.getLocation().getZ()) {
                                continue;
                            }

                            Material blockMaterial = blockLoc.getBlock().getType();

                          if (blockMaterial == Material.CHEST || (SavageFactions.plugin.getConfig().getBoolean("fvault.No-Hoppers-near-vault") && blockMaterial == Material.HOPPER)) {
                                e.setCancelled(true);
                                fme.msg(TL.COMMAND_GETVAULT_CHESTNEAR);
                                return;
                            }
                        }
                    }
                }

                fme.msg(TL.COMMAND_GETVAULT_SUCCESS);
                fme.getFaction().setVault(e.getBlockPlaced().getLocation());

            }
        }
    }

    @EventHandler
    public void onHopperPlace(BlockPlaceEvent e) {

      if (e.getItemInHand().getType() != Material.HOPPER && ! SavageFactions.plugin.getConfig().getBoolean("fvault.No-Hoppers-near-vault")) {
            return;
        }

        Faction factionAt = Board.getInstance().getFactionAt(new FLocation(e.getBlockPlaced().getLocation()));

        if (factionAt.isWilderness() || factionAt.getVault() == null) {
            return;
        }


        FPlayer fme = FPlayers.getInstance().getByPlayer(e.getPlayer());

        Block start = e.getBlockPlaced();
        int radius = 1;
        for (double x = start.getLocation().getX() - radius; x <= start.getLocation().getX() + radius; x++) {
            for (double y = start.getLocation().getY() - radius; y <= start.getLocation().getY() + radius; y++) {
                for (double z = start.getLocation().getZ() - radius; z <= start.getLocation().getZ() + radius; z++) {
                    Location blockLoc = new Location(e.getPlayer().getWorld(), x, y, z);
                    if (blockLoc.getX() == start.getLocation().getX() && blockLoc.getY() == start.getLocation().getY() && blockLoc.getZ() == start.getLocation().getZ()) {
                        continue;
                    }

                    if (blockLoc.getBlock().getType() == Material.CHEST) {
                        if (factionAt.getVault().equals(blockLoc)) {
                            e.setCancelled(true);
                            fme.msg(TL.COMMAND_VAULT_NO_HOPPER);
                            return;
                        }
                    }
                }
            }
        }

    }

    @EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
    public void onBlockPistonRetract(BlockPistonRetractEvent event) {
        // if not a sticky piston, retraction should be fine
        if (!event.isSticky() || !Conf.pistonProtectionThroughDenyBuild) {
            return;
        }

        Location targetLoc = event.getRetractLocation();
        Faction otherFaction = Board.getInstance().getFactionAt(new FLocation(targetLoc));

        // Check if the piston is moving in a faction's territory. This disables pistons entirely in faction territory.
      if (otherFaction.isNormal() && SavageFactions.plugin.getConfig().getBoolean("disable-pistons-in-territory", false)) {
            event.setCancelled(true);
            return;
        }

        // if potentially retracted block is just air/water/lava, no worries
        if (targetLoc.getBlock().isEmpty() || targetLoc.getBlock().isLiquid()) {
            return;
        }

        Faction pistonFaction = Board.getInstance().getFactionAt(new FLocation(event.getBlock()));

        if (!canPistonMoveBlock(pistonFaction, targetLoc)) {
            event.setCancelled(true);
        }
    }

    @EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
    public void onFrostWalker(EntityBlockFormEvent event) {
        if (event.getEntity() == null || event.getEntity().getType() != EntityType.PLAYER || event.getBlock() == null) {
            return;
        }

        Player player = (Player) event.getEntity();
        Location location = event.getBlock().getLocation();

        // only notify every 10 seconds
        FPlayer fPlayer = FPlayers.getInstance().getByPlayer(player);
        boolean justCheck = fPlayer.getLastFrostwalkerMessage() + 10000 > System.currentTimeMillis();
        if (!justCheck) {
            fPlayer.setLastFrostwalkerMessage();
        }

        // Check if they have build permissions here. If not, block this from happening.
        if (!playerCanBuildDestroyBlock(player, location, "frostwalk", justCheck)) {
            event.setCancelled(true);
        }
    }

    private boolean canPistonMoveBlock(Faction pistonFaction, Location target) {

        Faction otherFaction = Board.getInstance().getFactionAt(new FLocation(target));

        if (pistonFaction == otherFaction) {
            return true;
        }

        if (otherFaction.isWilderness()) {
            return !Conf.wildernessDenyBuild || Conf.worldsNoWildernessProtection.contains(target.getWorld().getName());

        } else if (otherFaction.isSafeZone()) {
            return !Conf.safeZoneDenyBuild;

        } else if (otherFaction.isWarZone()) {
            return !Conf.warZoneDenyBuild;

        }

        Relation rel = pistonFaction.getRelationTo(otherFaction);

        return !rel.confDenyBuild(otherFaction.hasPlayersOnline());
    }

  @EventHandler (priority = EventPriority.NORMAL, ignoreCancelled = true)
  public void onBlockBreak(BlockBreakEvent event) {
    if (! playerCanBuildDestroyBlock(event.getPlayer(), event.getBlock().getLocation(), "destroy", false)) {
      event.setCancelled(true);
      return;
    }
    FPlayer fme = FPlayers.getInstance().getByPlayer(event.getPlayer());
    if (! fme.hasFaction()) {
      return;
        }
    if (event.getBlock().getType() == SavageFactions.plugin.MOB_SPANWER) {
      if (! fme.isAdminBypassing()) {
        Access access = fme.getFaction().getAccess(fme, PermissableAction.SPAWNER);
        if (access != Access.ALLOW && fme.getRole() != Role.LEADER) {
          fme.msg(TL.GENERIC_FPERM_NOPERMISSION, "mine spawners");
          return;
                }
            }
    }
  }
}