MAX_FUEL = 100000
PRINT_REDNET = false

MOM_ID = 1
BOB_ID = 2
CHRIS_ID = 3
MARTY_ID = 4

BOT_NAMES = {}
BOT_NAMES[MOM_ID] = "MOM"
BOT_NAMES[BOB_ID] = "BOB"
BOT_NAMES[CHRIS_ID] = "CHRIS"
BOT_NAMES[MARTY_ID] = "MARTY"

toolsMonitor = nil

function setMonitor(monitor)
    toolsMonitor = monitor
end

function selectItem(itemName)
    local currentSlot = turtle.getSelectedSlot()
    for i=1,16 do
        local details = turtle.getItemDetail(currentSlot)
        if details ~= nil and details.name == itemName then
            turtle.select(currentSlot)
            return true
        end

        currentSlot = (currentSlot % 16) + 1
    end
    return false
end

-- Consume all compatible fuel in inventory
function refuelFromInventory()
    local fuelOld = turtle.getFuelLevel()
    local selectedSlot = turtle.getSelectedSlot()
    for i=1,16 do
        turtle.select(i)
        turtle.refuel()
    end
    turtle.select(selectedSlot)
    print("Refueled "..(turtle.getFuelLevel() - fuelOld)..".")
    sendFuelToMom()
end

-- input "minecraft:nether_wart"
-- output "nether_wart"
function cleanName(str)
    local delimiter = ":"
    local startIndex = string.find(str, delimiter) + 1
    if startIndex == nil then return str end
    return string.sub(str, startIndex)
end

-- Don't stop until a iron block is behind the computer
function calibrateDirection()
    for i=1,4 do
        local hasBlock, infos = turtle.inspect()
        if hasBlock and infos.name == 'minecraft:iron_block' then
            tools.uTurn()
            return true
        end
        turtle.turnRight()
    end

    print("Calibration block (iron block) not found.")
    print("An iron block must be behind the bot in order to start")
    print("Hold CTRL+R to retry")
    return false
end

CROP_MATURE_STAGE = {
    nether_wart = 3,
    wheat = 7,
    onions = 7,
    carrots = 7,
    potatoes = 7,
}

function farmLine(nbBlock, noMove, neededItem)
    for i=1,nbBlock do
        if noMove ~= true or i ~= 1 then turtle.forward() end
        local hasBlock, infos = turtle.inspectDown()

        if hasBlock then
            infos.name = cleanName(infos.name)

            if CROP_MATURE_STAGE[infos.name] == nil or CROP_MATURE_STAGE[infos.name] == infos.state.age then
                turtle.digDown()
                if (selectItem(neededItem)) then
                    turtle.placeDown()
                end
            end
        else
            turtle.digDown()
            if (selectItem(neededItem)) then
                turtle.placeDown()
            end
        end
    end
end

function farmLineCane(nbBlock)
    for i=1, nbBlock do
        turtle.dig()
        turtle.forward()
        turtle.digDown()
    end
end

function uTurn()
    turtle.turnLeft()
    turtle.turnLeft()
end

function driftLeft()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnLeft()
end

function driftRight()
    turtle.turnRight()
    turtle.forward()
    turtle.turnRight()
end

function forward(numBlock)
    for i=1,numBlock do
        turtle.forward()
    end
end

function back(numBlock)
    for i=1,numBlock do
        turtle.back()
    end
end

function dropAll()
    local selectedSlot = turtle.getSelectedSlot()
    for i=1,16 do
        turtle.select(i)
        turtle.drop()
    end
    turtle.select(selectedSlot)
end

function needFuel()
    return turtle.getFuelLevel() < turtle.getFuelLimit() * 0.75
end

-- Count number of items in inventory
function getItemQuantity()
    local quantity = 0
    for i=1,16 do
        quantity = quantity + turtle.getItemCount(i)
    end
    return quantity
end

function displayFuelBar(fuel, x, y, nbBox)
    toolsMonitor.setCursorPos(x, y)
    toolsMonitor.write("FUEL("..fuel.."/"..MAX_FUEL..") ")
    toolsMonitor.setCursorPos(x, y + 1)
    nbGreenBoxes = math.floor(fuel * nbBox / MAX_FUEL)
    toolsMonitor.setBackgroundColor(colors.green)
    for i=1,nbGreenBoxes do
        toolsMonitor.write(" ")
    end
    toolsMonitor.setBackgroundColor(colors.red)
    for i=1,(nbBox - nbGreenBoxes) do
        toolsMonitor.write(" ")
    end
    toolsMonitor.setBackgroundColor(colors.black)
end

-- input 800
-- output "13m20"
-- input 30
-- output "30s"
function niceTime(seconds)
    return tostring(seconds).."s"
end

function writeHighlight(text, x, y, width)
    toolsMonitor.setCursorPos(x, y)
    toolsMonitor.write(text)
    toolsMonitor.setCursorPos(x, y + 1)
    toolsMonitor.write(string.rep("=", width))
end

function sleepAndInformMom(seconds)
    local toSleep = seconds
    while toSleep > 0 do
        sleep(1)
        toSleep = toSleep - 1
        sendToBot(MOM_ID, "s"..toSleep)
    end
end

function sendFuelToMom()
    fuel = turtle.getFuelLevel()
    sendToBot(MOM_ID, "f"..fuel)
end

function sendToBot(botId, message)
    rednet.send(botId, message)
    if PRINT_REDNET then print("[REDNET] To "..tools.BOT_NAMES[botId]..": \""..message.."\"") end
end

function receiveFromBot(message)
    local botId, message = rednet.receive()
    local botName = tools.BOT_NAMES[botId]
    if botName == nil then botName = "unknown" end
    if PRINT_REDNET then print("[REDNET] From "..botName..": \""..message.."\"") end
    return botId, message
end