guardapi

local function isRednetAvailable()
  result = false

  for n,m in ipairs(rs.getSides()) do
   if rednet.isOpen(m) then
     result = true
   end
 end

   return result
end

function getShard(itemCount)
  if not isRednetAvailable() then
    error("Rednet is not available !")
  end

  if not itemCount or itemCount > 64 or itemCount < 0 or type(itemCount) ~= "number" then
    error("First argument must be an integer between 0 and 64")
  end

  rednet.send(3955, itemCount)
end

function getCrystal(itemCount)
  if not isRednetAvailable() then
    error("Rednet is not available !")
  end

  if not itemCount or itemCount > 64 or itemCount < 0 or type(itemCount) ~= "number" then
    error("First argument must be an integer between 0 and 64")
  end

  rednet.send(3953, itemCount)
end

function getPearl(itemCount)
  if not isRednetAvailable() then
    error("Rednet is not available !")
  end

  if not itemCount or itemCount > 16 or itemCount < 0 or type(itemCount) ~= "number" then
    error("First argument must be an integer between 0 and 16")
  end

  rednet.send(3978, itemCount)
end

function getFish(itemCount)
  if not isRednetAvailable() then
    error("Rednet is not available !")
  end

  if not itemCount or itemCount > 64 or itemCount < 0 or type(itemCount) ~= "number" then
    error("First argument must be an integer between 0 and 64")
  end

  rednet.send(3954, itemCount)
end