import:
    java.lang.Long
    org.bukkit.inventory.EquipmentSlot
    org.bukkit.event.inventory.ClickType
    org.bukkit.event.inventory.InventoryDragEvent
    org.bukkit.event.block.BlockPlaceEvent

options:
    BpSize: 3
    prefix: &9[SkBackpack]
    MainColor: &3
    SecondaryColor: &b
    
on BlockPlaceEvent:
    if event.getItemInHand() is not set:
        stop
    set {_i} to nbt compound of event.getItemInHand()
    if tag "tag;isBackpack" of {_i} is 1:
        cancel event

on rightclick:
    if event.getItem() is not set:
        stop
    set {_i} to nbt compound of event.getItem()
    if tag "tag;isBackpack" of {_i} is 1:
        if event.getHand() is EquipmentSlot.OFF_HAND:
            send "{@prefix} {@SecondaryColor}By otworzyć plecak musisz trzymać go w głównej ręce" to player
            stop
        if event.getItem().getAmount() is not 1:
            send "{@prefix} {@SecondaryColor}Możesz trzymać maksymalnie 1 plecak" to player
            stop
        set {_inv} to chest inventory with {@BpSize} rows named "&9Plecak"
        set {_c::*} to compound list tag "tag;Backpack;Items" of {_i}
        loop {_c::*}:
            set {_sl} to tag "Slot" of loop-value
            set {_item} to item from nbt loop-value
            set slot {_sl} of {_inv} to {_item}
        open {_inv} to player


on InventoryDragEvent:
    if name of event.getInventory() is "&9Plecak":
        set {_i} to nbt compound of event.getViewers().get(0.intValue()).getInventory().getItemInMainHand()
        if tag "tag;isBackpack" of {_i} is 1:
            wait 1 tick
            loop 9*{@BpSize} times:
                if slot loop-number -1 of event.getViewers().get(0.intValue())'s current inventory is not air:
                    set {_it} to nbt compound of (slot loop-number -1 of event.getViewers().get(0.intValue())'s current inventory)
                    set tag "Slot" of {_it} to loop-number -1
                    if {_co} is not set:
                        set {_co} to "%{_it}%"
                    else:
                        set {_co} to "%{_co}%,%{_it}%"
            if {_co} is set:
                set {_t} to "{Items:[%{_co}%]}"
            else:
                set {_t} to "{Items:[]}"
            delete tag "tag;Backpack" of {_i}
            set tag "tag;Backpack" of {_i} to nbt compound of {_t}
            set event.getViewers().get(0.intValue())'s tool to 1 of item from nbt {_i}

on inventory close:
    if name of event.getInventory() is "&9Plecak":
        set {_i} to nbt compound of event.getViewers().get(0.intValue()).getInventory().getItemInMainHand()
        if tag "tag;isBackpack" of {_i} is 1:
            loop 9*{@BpSize} times:
                if slot loop-number -1 of event.getViewers().get(0.intValue())'s current inventory is not air:
                    set {_it} to nbt compound of (slot loop-number -1 of event.getViewers().get(0.intValue())'s current inventory)
                    set tag "Slot" of {_it} to loop-number -1
                    if {_co} is not set:
                        set {_co} to "%{_it}%"
                    else:
                        set {_co} to "%{_co}%,%{_it}%"
            if {_co} is set:
                set {_t} to "{Items:[%{_co}%]}"
            else:
                set {_t} to "{Items:[]}"
            delete tag "tag;Backpack" of {_i}
            set tag "tag;Backpack" of {_i} to nbt compound of {_t}
            set event.getViewers().get(0.intValue())'s tool to 1 of item from nbt {_i}

on inventory click:
    if name of event-inventory is "&9Plecak":
        set {_i} to nbt compound of player.getInventory().getItemInMainHand()
        if tag "tag;isBackpack" of {_i} is 1:
            if event.getCurrentItem() is set:
                set {_itest} to nbt compound of event.getCurrentItem()
                if tag "tag;isBackpack" of {_itest} is 1:
                    cancel event
                    stop
            if event.getClick() is ClickType.NUMBER_KEY:
                if player.getInventory().getItem(event.getHotbarButton()) is set:
                    set {_itest} to nbt compound of player.getInventory().getItem(event.getHotbarButton())
                    if tag "tag;isBackpack" of {_itest} is 1:
                        cancel event
                        stop
            loop {@BpSize}*9 times:
                set {_in::%loop-number%} to (player's current inventory).getItem((loop-number -1).intValue())
            wait 1 tick
            set {_i2} to nbt compound of player.getInventory().getItemInMainHand()
            set {_c2::*} to compound list tag "tag;Backpack;Items" of {_i2}
            set {_c::*} to compound list tag "tag;Backpack;Items" of {_i}
            loop {_c::*}:
                set {_item} to item from nbt loop-value
                if {_in::%(tag "Slot" of loop-value).intValue() +1%} is not item from nbt {_c2::%loop-index%}:
                    event.setResult(Event.Result.DENY)
                    close player's inventory
                    stop
            if name of player's current inventory is not "&9Plecak":
                stop
            loop 9*{@BpSize} times:
                if slot loop-number -1 of player's current inventory is not air:
                    set {_it} to nbt compound of (slot loop-number -1 of player's current inventory)
                    set tag "Slot" of {_it} to loop-number -1
                    if {_co} is not set:
                        set {_co} to "%{_it}%"
                    else:
                        set {_co} to "%{_co}%,%{_it}%"
            if {_co} is set:
                set {_t} to "{Items:[%{_co}%]}"
            else:
                set {_t} to "{Items:[]}"
            delete tag "tag;Backpack" of {_i}
            set tag "tag;Backpack" of {_i} to nbt compound of {_t}
            set player's tool to 1 of item from nbt {_i}
            
command /plecak [<text>] [<text>]:
    aliases: bp, backpack
    permission: backpacks.command
    permission message: {@prefix} {@SecondaryColor}Nie masz pozwolenia na korzystanie z tej komendy!
    trigger:
        if arg-1 is not set:
            send "{@prefix} {@SecondaryColor}Komendy:" to sender
            send "{@MainColor}/plecak give [gracz] {@SecondaryColor}- Daje pusty plecak danemu graczowi (lub tobie, gdy gracz nie jest podany)" to sender
            stop
        if arg-1 is "give" or "daj":
            if arg-2 is not set:
                if sender is a player:
                    if player.getInventory().firstEmpty() is not -1.intValue():
                        player.getInventory().addItem(getBackpack())
                        send "{@prefix} {@SecondaryColor}Otrzymałeś plecak!" to player
                    else:
                        loop 36 times:
                            if player.getInventory().getItem((loop-number -1).intValue()).equals((player.getInventory().getItem((loop-number -1).intValue()).getAmount()) of getBackpack()):
                                if player.getInventory().getItem((loop-number -1).intValue()).getAmount() is 64:
                                    continue
                                player.getInventory().addItem(getBackpack())
                                send "{@prefix} {@SecondaryColor}Otrzymałeś plecak!" to player
                                stop
                            else:
                                continue
                        player.getWorld().dropItemNaturally(player.getLocation(), getBackpack())
                        send "{@prefix} {@SecondaryColor}Otrzymałeś plecak! &cO nie, wypadł na ziemię! Podnieś go jak najszybciej!" to player
                else:
                    send "{@prefix} {@SecondaryColor}Nie podałeś nazwy gracza któremu chcesz dać plecak!" to sender
            else:
                if arg-2 parsed as player is online:
                    set {_target} to arg-2 parsed as player
                    if {_target}.getInventory().firstEmpty() is not -1.intValue():
                        {_target}.getInventory().addItem(getBackpack())
                        send "{@prefix} {@SecondaryColor}Otrzymałeś plecak!" to {_target}
                        if arg-2 parsed as player is not player:
                            send "{@prefix} {@SecondaryColor}Gracz {@MainColor}%arg-2 parsed as player% {@SecondaryColor}otrzymał plecak!" to sender
                    else:
                        loop 36 times:
                            if {_target}.getInventory().getItem((loop-number -1).intValue()).equals(({_target}.getInventory().getItem((loop-number -1).intValue()).getAmount()) of getBackpack()):
                                if {_target}.getInventory().getItem((loop-number -1).intValue()).getAmount() is 64:
                                    continue
                                {_target}.getInventory().addItem(getBackpack())
                                send "{@prefix} {@SecondaryColor}Otrzymałeś plecak!" to {_target}
                                if arg-2 parsed as player is not player:
                                    send "{@prefix} {@SecondaryColor}Gracz {@MainColor}%arg-2 parsed as player% {@SecondaryColor}otrzymał plecak!" to sender
                                stop
                            else:
                                continue
                        {_target}.getWorld().dropItemNaturally({_target}.getLocation(), getBackpack())
                        send "{@prefix} {@SecondaryColor}Otrzymałeś plecak! &cO nie, wypadł na ziemię! Podnieś go jak najszybciej!" to {_target}
                        if arg-2 parsed as player is not player:
                            send "{@prefix} {@SecondaryColor}Gracz {@MainColor}%arg-2 parsed as player% {@SecondaryColor}otrzymał plecak!" to sender
                else:
                    send "{@prefix} {@SecondaryColor}Ten gracz nie jest online!" to sender

function getBackpack() :: item:
    set {_i} to nbt compound of player head named "&9Plecak" with lore "&7&oKliknij prawym aby otworzyć!"
    set {_ver::*} to minecraft version split at "."
    if {_ver::2} parsed as integer is not less than 16:
        set tag "tag" of {_i} to nbt compound of "{Backpack:{Items:[]},SkullOwner:{Id:[I;-1094010160,1381977451,-2091589409,-2138830266],Properties:{textures:[{Value:""eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvOGRjYzZlYjQwZjNiYWRhNDFlNDMzOTg4OGQ2ZDIwNzQzNzU5OGJkYmQxNzVjMmU3MzExOTFkNWE5YTQyZDNjOCJ9fX0=""}]}},display:{Lore:['{""extra"":[{""bold"":false,""italic"":true,""underlined"":false,""strikethrough"":false,""obfuscated"":false,""color"":""gray"",""text"":""Kliknij prawym aby otworzyć!""}],""text"":""""}'],Name:'{""extra"":[{""bold"":false,""italic"":false,""underlined"":false,""strikethrough"":false,""obfuscated"":false,""color"":""blue"",""text"":""Plecak""}],""text"":""""}'},isBackpack:1b}"
    else:
        set tag "tag" of {_i} to nbt compound of "{Backpack:{Items:[]},SkullOwner:{Id:""becabad0-525f-4d6b-8354-e0df80840a46"",Properties:{textures:[{Value:""eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvOGRjYzZlYjQwZjNiYWRhNDFlNDMzOTg4OGQ2ZDIwNzQzNzU5OGJkYmQxNzVjMmU3MzExOTFkNWE5YTQyZDNjOCJ9fX0=""}]}},display:{Lore:['{""extra"":[{""bold"":false,""italic"":true,""underlined"":false,""strikethrough"":false,""obfuscated"":false,""color"":""gray"",""text"":""Kliknij prawym aby otworzyć!""}],""text"":""""}'],Name:'{""extra"":[{""bold"":false,""italic"":false,""underlined"":false,""strikethrough"":false,""obfuscated"":false,""color"":""blue"",""text"":""Plecak""}],""text"":""""}'},isBackpack:1b}"
    set {_i} to item from nbt "%{_i}%"
    return {_i}