utils

function selectItem(item, damage)
  for i = 1,16 do
    local item = turtle.getItemDetail(i)
    if item and item.name == item then
      if not damage or item.damage == damage then
        turtle.select(i)
        return true
      end
    end
  end

  return false
end


function refuel()
  if select("minecraft:coal") or select("minecraft:charcoal") then
    turtle.refuel()
    return true
  end
  return false
end

function waitForRefuel()
  if not refuel() then
    print("Waiting for fuel...")
  end
  while not refuel() do
    os.sleep(1)
  end
end

function tableContains(haystack, needle)
  for k,v in pairs(haystack) do
    if v == needle then
      return true
    end
  end

  return false
end


function itemMatches(item, pattern)
  if item == nil then
    return false
  end

  if not string.match(pattern, ":") then
    pattern = "minecraft:"..pattern
  end

  if pattern == item.name then
    return true
  end

  if pattern == item.name.." "..item.damage then
    return true
  end

  return false
end


function itemMatchesAny(item, patterns)
  for k,v in pairs(patterns) do
    if itemMatches(item, v) then
      return true
    end
  end

  return false
end