-- Crafting Turtle Script
-- Run this on the crafting turtle (turtle with crafting table).
-- Polls its own crafting grid slots and auto-crafts when items appear.
-- No modem required — works via the wired network inventory access.

-- Crafting grid slots in a turtle's 4x4 inventory
local CRAFT_SLOTS = {1, 2, 3, 5, 6, 7, 9, 10, 11}

-- How long to wait after detecting items before crafting,
-- giving the master time to finish placing all ingredients.
local SETTLE_DELAY = 1.0

-- Polling interval (seconds)
local POLL_INTERVAL = 0.5

print("=================================")
print("  Crafting Turtle (Auto-Craft)")
print("=================================")
print("")

-- Verify this is a crafting turtle
if not turtle or not turtle.craft then
    print("[ERR] No turtle.craft() available!")
    print("      This must be a Crafting Turtle.")
    return
end

print("Polling crafting slots for items...")
print("Ready. Items placed in grid will be auto-crafted.")
print("")

local function hasCraftingItems()
    for _, slot in ipairs(CRAFT_SLOTS) do
        if turtle.getItemCount(slot) > 0 then
            return true
        end
    end
    return false
end

local function describeGrid()
    local parts = {}
    for _, slot in ipairs(CRAFT_SLOTS) do
        local detail = turtle.getItemDetail(slot)
        if detail then
            table.insert(parts, string.format("  slot %d: %s x%d", slot, detail.name, detail.count))
        end
    end
    return table.concat(parts, "\n")
end

while true do
    if hasCraftingItems() then
        -- Wait for the master to finish placing all ingredients
        print("[CRAFT] Items detected in grid, waiting " .. SETTLE_DELAY .. "s...")
        sleep(SETTLE_DELAY)

        -- Check again — items might have been pulled back (abort)
        if hasCraftingItems() then
            print("[CRAFT] Grid contents:")
            print(describeGrid())
            print("[CRAFT] Attempting craft...")

            local ok, err = turtle.craft()

            if ok then
                -- Show what was crafted
                local results = {}
                for slot = 1, 16 do
                    local detail = turtle.getItemDetail(slot)
                    if detail then
                        table.insert(results, string.format("%s x%d", detail.name, detail.count))
                    end
                end
                print("[CRAFT] Success! Result: " .. table.concat(results, ", "))
            else
                print("[CRAFT] Failed: " .. tostring(err))
            end

            -- Wait for master to pull results before polling again
            sleep(2)
        else
            print("[CRAFT] Items removed before crafting (aborted by master)")
        end
    end

    sleep(POLL_INTERVAL)
end