function agc(name)
    return assert(components:getFirst(name), "failed to get component "..name)
end

local computer = agc("computer")
local fs = require("filesystem")
local kernel = require("kernel")
local crafter = agc("digitalCrafter")
print("it works")


local function craft(...)
    while true do
        local cooldown = crafter.cooldownRemaining
        if cooldown <= 0 then break end
        sleep(cooldown)
    end
    return crafter:craft(...)
end

print("Which item would you like to craft?")
local buf = ""

local ctrlCReceived = false
local keyEvents = {}
kernel:registerEventCallback("charTyped", function(...) table.insert(keyEvents, {...}) end)
kernel:registerEventCallback("keyPressed", function(...) table.insert(keyEvents, {...}) end)
local matchingItems = {}
while true do
    if #keyEvents > 0 then
        local event = table.remove(keyEvents, 1)
        if event[1] == "charTyped" then
            if event[2] == "\n" then
                if #matchingItems == 1 then
                    print()
                    print("Selected item: "..tostring(matchingItems[1]))
                    break
                end
            elseif event[2] == "\b" then
                if #buf > 0 then
                    buf = buf:sub(1, #buf-1)
                end
            else
                buf = buf .. event[2]
            end
            matchingItems = #buf > 0 and crafter:searchItemsByName(buf) or {}
            printInline("\r["..(#matchingItems).." match"..(#matchingItems ~= 1 and "es" or "").."] "..buf.."     ")
        elseif event[1] == "keyPressed" then
            local charRepr, code, _, mod = table.unpack(event, 2)            
	        if code == 67 and (mod&2>0) then -- ctrl+c
                ctrlCReceived = true
                error("ctrl c pressed")
            end
        end
    else
        sleep(0.25)
    end
end

assert(#matchingItems == 1, "not exactly 1 matching item")
local matchingItem = matchingItems[1]

local function readNumber(prompt)
    printInline(prompt)
    keyEvents = {}
    local buf = ""
    while true do
        if #keyEvents > 0 then
            local event = table.remove(keyEvents, 1)
            if event[1] == "charTyped" then
                if event[2] == "\n" then
                    if #matchingItems == 1 then
                        local num = tonumber(buf)
                        if num ~= nil then print() return num end
                        buf = ""
                    end
                elseif event[2] == "\b" then
                    if #buf > 0 then
                        buf = buf:sub(1, #buf-1)
                    end
                else
                    buf = buf .. event[2]
                end
                printInline("\r"..prompt.. " "..buf.." ")
            elseif event[1] == "keyPressed" then
                local charRepr, code, _, mod = table.unpack(event, 2)            
                if code == 67 and (mod&2>0) then -- ctrl+c
                    ctrlCReceived = true
                    error("ctrl c pressed")
                end
            end
        else
            sleep(0.25)
        end
    end
end

local quantity = readNumber("How many items do we want to craft?")
print("We want to craft "..quantity.."x "..matchingItem)

local craftingRecipesToExecute = {} -- this is a stack, use table.insert to add new recipes to craft, and remove from end when executing the recipes
local itemsLeftToCraft = {[matchingItem] = quantity} -- key=itemname, value=amountNeeded
local reservedItems = {} -- itemname:reservedQuantity; needed so we dont queue two recipes that need more ingredients in total than we have in our storage system
while next(itemsLeftToCraft) ~= nil do -- if there is anything left that needs to be crafted
    local toCraft = assert(next(itemsLeftToCraft), "somehow got nil1")
    itemsLeftToCraft[toCraft] = 0

    -- check if cached recipe exists, if so use that

    -- else
        -- get possible recipes

        -- compute how often we apply this recipe

        -- add to craftingRecipesToExecute
        -- reserve items we need for crafting, or add them to itemsLeftToCraft

        -- TODO ac: add extraoutputs to 'recipe' datastructure
end