local component = require("component")
local sides = require("sides")
local robot = require("robot")
local db = component.database
local invcontrol = component.inventory_controller

function gib(gibber)
print(db.get(gibber))
print(db.computeHash(gibber))
end

function drop(dropper)
robot.select(1)
invcontrol.dropIntoSlot(1, dropper)
end

function check()
invcontrol.store(1, _G.slot, db.address, 1)
local checkret = db.computeHash(1)
--print(checkret)
return(checkret)
end

function isEmpty()
if(string.find(check(), _G.empty) == nil)
then
--print("Not Empty!")
return(false)
else
print("Empty!")
return(true)
end
end

function main()
if(isEmpty() == true)
then
charge()
else
main()
end
end

function charge()
print("Charging!")
invcontrol.suckFromSlot(1, _G.slot)
invcontrol.dropIntoSlot(3,1)
pull()
end

function pull()
print("checkin")
if(invcontrol.getStackInInternalSlot(1) == nil)
then
fucklua()
else
print("Charged!")
invcontrol.suckFromSlot(3,2)
invcontrol.dropIntoSlot(1, _G.slot)
main()
end
end

function fucklua()
pull()
end


io.write("Welcome to Railgun Reload! Please input the # of the hotbar slot you are going to use for your railgun: ")
io.flush()
_G.slot = tonumber(io.read())

repeat
io.write("Please place your UNCHARGED railgun in the slot you selected, type 'ok' when you are ready to continue")
io.flush()
until io.read() == "ok"

invcontrol.store(1, _G.slot, db.address, 2)
_G.empty = db.computeHash(2)
db.clear(2)

main()