function tradeStart(p1: player, p2: player):
    open chest with 2 rows named "&lTrade | %{_p2}%" to {_p1}
    open chest with 2 rows named "&lTrade | %{_p1}%" to {_p2}
    
    set {Player.trade::%{_p1}%} to "%{_p2}%"
    set {Player.trade::%{_p2}%} to "%{_p1}%"
    
    clear {Player.trade.items.%{_p1}%::*}
    clear {Player.trade.items.%{_p2}%::*}
    
    clear {Player.trade.finish::%{_p1}%}
    clear {Player.trade.finish::%{_p2}%}
    
    clear {Player.tradewaiting::%{_p1}%}
    clear {Player.tradewaiting::%{_p2}%}
    
function tradeWait(p1: player, p2: player):
    open chest with 6 rows named "&lTrade | Waiting for %{_p2}%" to {_p1}
    
    set {_} to 0
    loop 18 times:
        set slot {_} of {_p1}'s current inventory to {Player.trade.items.%{_p2}%::%{_}%}
        add 1 to {_}
        
    set {_} to 18
    loop 9 times:
        set slot {_} of {_p1}'s current inventory to black glass pane named "&c⇡ &ePrzedmioty gracza %{_p2}%" with lore "&c⇣ &eTwoje przedmioty"
        add 1 to {_}
    set {_} to 45
    loop 2 times:
        loop 3 times:
            set slot {_} of {_p1}'s current inventory to black glass pane named " "
            add 1 to {_}
        add 3 to {_}

    set slot 48 of {_p1}'s current inventory to rose red named "&4✘ &cPrzerwij transakcje &4✘"
    set slot 49 of {_p1}'s current inventory to empty map named "&e&lStatus transakcji" with lore "&7%{_p1}%&8: &c✘", "&7%{_p2}%&8: &c✘"
    set slot 50 of {_p1}'s current inventory to light green dye named "&2✔ &aZaakceptuj transakcje &2✔"
    
    set {_} to 27
    set {_!} to 0
    loop 18 times:
        set slot {_} of {_p1}'s current inventory to {Player.trade.items.%{_p1}%::%{_!}%}
        add 1 to {_}
        add 1 to {_!}
        
    if uncolored inventory name of {_p2}'s current inventory is "Trade | Waiting for %{_p1}%":
        set {_} to 0
        loop 18 times:
            set slot {_} of {_p2}'s current inventory to {Player.trade.items.%{_p1}%::%{_}%}
            add 1 to {_}
        set slot 49 of {_p1}'s current inventory to slot 49 of {_p2}'s current inventory
    
function stopTrade(p1: player):
    if {Player.trade::%{_p1}%} is set:
        set {_} to 0
        loop 18 times:
            add {Player.trade.items.%{_p1}%::%{_}%} to {_p1}
            add 1 to {_}
        clear {Player.trade::%{_p1}%}

function finishTrade(p1: player, p2: player):
    set {Player.trade.finish::%{_p1}%} to true
    set {Player.trade.finish::%{_p2}%} to true
    {_p1}.closeInventory()
    {_p2}.closeInventory()
    set {_} to 0
    loop 18 times:
        add {Player.trade.items.%{_p2}%::%{_}%} to {_p1}
        add {Player.trade.items.%{_p1}%::%{_}%} to {_p2}
        add 1 to {_}
    send "&2&lSuccess! &aTransakcja zostala zakonczona sukcesem!" to {_p1}
    send "&2&lSuccess! &aTransakcja zostala zakonczona sukcesem!" to {_p2}
    
on inventory click:
    if inventory name of player's current inventory is "&lTrade | Waiting for %{Player.trade::%player%}%":
        cancel event
        if clicked item is light green dye named "&2✔ &aZaakceptuj transakcje &2✔":
            set {_p2} to {Player.trade::%player%} parsed as offlineplayer
            
            set slot 49 of player's current inventory to empty map named "&e&lStatus transakcji" with lore "&7%player%&8: &a✔", "&7%{_p2}%&8: &c✘"
            if inventory name of {_p2}'s current inventory is "&lTrade | Waiting for %player%":
                set slot 49 of {_p2}'s current inventory to empty map named "&e&lStatus transakcji" with lore "&7%{_p2}%&8: &c✘", "&7%player%&8: &a✔"
            set slot 50 of player's current inventory to black glass pane named " "
            
            if slot 50 of player's current inventory is black glass pane named " ":
                if slot 50 of {_p2}'s current inventory is black glass pane named " ":
                    finishTrade(player, {_p2})
        if clicked item is rose red named "&4✘ &cPrzerwij transakcje &4✘":
            player.closeInventory()

on inventory close:
    if uncolored inventory name of player's current inventory contains "Trade":
        set {_n} to uncolored inventory name of player's current inventory
        if {_n} is "Trade | Waiting for %{Player.trade::%player%}%":
            
            if {Player.trade.finish::%player%}:
                stop
                
            set {_p1} to player
            set {_p2} to {Player.trade::%player%} parsed as player
            stopTrade({_p1})
            if inventory name of {_p2}'s current inventory is "&lTrade | %player%":
                {_p2}.closeInventory()
                wait 2 tick
                {_p2}.closeInventory()
            else:
                {_p2}.closeInventory()
            send "&4&lError! &cWymiana zostala przerwana!" to {_p1}
        else:
            if {Player.trade::%player%} is set:
                set {_} to 0
                loop 18 times:
                    if slot {_} of player's current inventory is not air:
                        set {Player.trade.items.%player%::%{_}%} to slot {_} of player's current inventory
                    add 1 to {_}
                wait 1 tick
                tradeWait(player, {Player.trade::%player%} parsed as offlineplayer)
            
command /trade [<player>]:
    cooldown: 5 seconds
    cooldown message: &4&lError! &cTa komende mozesz uzywac co 5 sekund!
    cooldown bypass: damianekrpg.bypass.trade
    trigger:
        if {Player.tradewaiting::%player%} is not player-arg:
            set {Player.tradewaiting::%player%} to player-arg
            if {Player.tradewaiting::%player-arg%} is not player:
                send "&2&lSuccess! &aZaprosiles gracza &e%player-arg%&a do transakcji!" to player
                send "&6&lWarning! &eOtrzymales zaproszenie do transakcji od gracza &c%player%&e!" to player-arg
        if {Player.tradewaiting::%player-arg%} is player:
            tradeStart(player, player-arg)
            
on right click on player:
    if player is sneaking:
        set {_online} to name of clicked entity
        if {_online} parsed as offlineplayer is online:
            make player execute command "trade %{_online}%"