-- BM Altar Automation by Apoc
-- v1.0 - 2/20/2016
--              Initial Release

local altarPeripheralName = "bloodmagic:altar_0"
local altarBufferChestDir = "west"
local altarBufferChestName = "minecraft:chest_0"
local altarOutputChestDir = "east"
-- Whether or not the script will wait for the altar to have enough LP in it to do the craft
-- Suggested that this is 'false' if you run a well of suffering, or know that you will have enough LP for any given craft
-- Not yet implemented :(/>/>
local checkAltarLPLevelsFirst = false

local recipes = {
-- "Vanilla" Blood Magic (Stone -> Slate)
-- {source="Minecraft:blockStone", final="AWWayofTime:blankSlate", lp=1000},

-- FTB Infinity Evolved (Expert) Blood Magic (Arcane Stone Block -> Slate)
{source="Thaumcraft:blockCosmeticSolid:6", final="AWWayofTime:blankSlate", lp=1000},


{source="AWWayofTime:blankSlate", final="AWWayofTime:reinforcedSlate", lp=2000},
{source="AWWayofTime:reinforcedSlate", final="AWWayofTime:imbuedSlate", lp=5000},
{source="AWWayofTime:imbuedSlate", final="AWWayofTime:demonicSlate", lp=15000},
{source="AWWayofTime:demonicSlate", final="AWWayofTime:bloodMagicBaseItems:27", lp=30000},
-- Add other recipes here if you want.
}

local altar = peripheral.wrap(altarPeripheralName)
local chest = peripheral.wrap(altarBufferChestName)


function getAltarItem()
  local stack = altar.getItem(1)
  if not stack then return nil end
  return stack.getMetadata().name
end

function altarHasOrb()
  local item = getAltarItem()
  if item ~= nil and string.find(item, "blood_orb") then
        return true
  else
        return false
  end
end

function chestHasOrb()
        return getChestOrbSlot() ~= 0
end

function getChestOrbSlot()
        for i=1, chest.size() do
                if chest.getItem(i) then
                        if chest.getItem(i) ~= nil and string.find(chest.getItem(i).getMetadata().name, "blood_orb") then
                                return
                        end
                end
        end
        return 0
end

function putOrbInAltar()
        -- Only check if there is *any* item there. We may be crafting something
        -- if the orb is there already, there's no point in running this yet anyway.
        if getAltarItem() == nil then
                if not chestHasOrb() then
                        error("The buffer chest does not have an orb in it, and we expect one for re-charging the LP network. Did you remove it?")
                end
                print("Moving Blood Orb back into the altar to charge LP")
                altar.pullItemss(altarBufferChestDir, getChestOrbSlot(), 1)
                sleep(0.5)
        end
end

function removeOrbFromAltar()
        if altarHasOrb() then
                altar.pushItem(altarBufferChestDir, 1)
                sleep(0.5)
        end
end

function findCraftingRecipe(stack)
        local itemId = getItemId(stack)
        if itemId then
                for i=1, #recipes do
                        if recipes[i].source == itemId then
                                if recipes[i].lp <= altar.getTanks()[1].amount then
                                        return recipes[i]
                                end
                        end
                end
        end
        return nil
end

function getItemId(stack)
        if stack then
                if stack.dmg ~= nil and stack.dmg ~= 0 then
                        return stack.id .. ":" .. stack.dmg
                else
                        return stack.id
                end
        end
        return nil
end

function craftSlate()
        for i=1, chest.size() do
                -- Figure out if we have anything to craft
                local stack = chest.getItem(i)
                local recipe = findCraftingRecipe(stack)
                if stack ~= nil then
                        if recipe ~= nil then
                                removeOrbFromAltar()
                                print("Transmuting " .. stack.display_name)
                                altar.pullItems(altarBufferChestDir, i, 1)
                                --sleep(0.5)
                                while getItemId(altar.getStackInSlot(1)) ~= recipe.final do
                                        sleep(0.1)
                                end
                                --sleep(0.5)
                                altar.pushItem(altarOutputChestDir, 1)
                                --sleep(0.5)
                                return true
                        end
                end
        end
        return false
end


while true do
        if not craftSlate() then
                putOrbInAltar()
                sleep(1)
        end
end