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-- Fuels a collection of Botania Endoflame flowers.

---Fuels and their furnace burn times in seconds.
---To get the Endoflame burn time, divide the furnace time by 2.
---@type table<string, integer>
local fuelItems = {
    ["quark:charcoal_block"] = 800,
    ["minecraft:coal_block"] = 800,
    ["minecraft:charcoal"] = 80,
    ["minecraft:coal"] = 80,
    ["minecraft:dried_kelp_block"] = 200
}

---@param msg string
local function log(msg)
    print(os.date("%X") .. " " .. msg)
end

---Selects a valid item from the predefined fuel list in the inventory.
---@return string|nil item Item name that was selected, or nil
local function selectFuelItem()
    local detail = turtle.getItemDetail()
    if detail then
        if fuelItems[detail.name] then
            return detail.name
        end
    end

    for i = 1, 16, 1 do
        local detail = turtle.getItemDetail(i)
        if detail then
            if fuelItems[detail.name] then
                turtle.select(i)
                return detail.name
            end
        end
    end

    return nil
end

local function compressInventory()
    for dest = 1, 15, 1 do
        for source = dest + 1, 16, 1 do
            if turtle.getItemCount(source) > 0 then
                turtle.select(source)
                turtle.transferTo(dest)
            end
        end
    end
end

-- Support loading as a module
if package.loaded["dropEndoflameFuel"] then
    return {
        fuelItems = fuelItems,
        selectFuelItem = selectFuelItem,
        compressInventory = compressInventory
    }
end

local dropCount = tonumber(arg[1])

if not tonumber(arg[1]) then
    print("Fuels a collection of Botania Endoflame flowers.")
    print("Usage:")
    print("  dropEndoflameFuel <count>")
    return
end

while true do

    local item = selectFuelItem()

    if turtle.getItemCount() < dropCount then
        log("Compressing inventory")
        compressInventory()
        item = selectFuelItem()

        if turtle.getItemCount() < dropCount then
            log("Ran out of fuel items")
            return
        end
    end


    turtle.dropDown(dropCount)
    log("Dropped " .. dropCount .. " of " .. item)

    local sleepTime = fuelItems[item] * 0.5

    log("Sleeping for " .. sleepTime .. " seconds")
    os.sleep(sleepTime)

end