require("TurtleLib/generalLibrary")

SEED_LIST = { "croptopia", "seed", "carrot" }
SEED_LIST_SIZE = tableLength(SEED_LIST)

function getSeedIndex()
    return findSlot(SEED_LIST)
end

function checkForCrop(data)
    for value in ipairs(SEED_LIST) do
        if (string.match(data['name'], value) == true and data['state']['age'] == 7) then return true end
    end
    return false
end

function getCrop()
    local isBlock, data = turtle.inspectDown()
    if (isBlock) then
        if (checkForCrop(data)) then
            turtle.digDown()
        else
            return
        end
    end
    local seedIndex = getSeedIndex()
    if (seedIndex ~= -1) then
        turtle.select(seedIndex)
        turtle.placeDown()
    end
end

function resetPos()
    local file = fs.open("Settings", "r")
    local startX = tonumber(file.readLine())
    local startY = tonumber(file.readLine())
    local startZ = tonumber(file.readLine())
    file.readLine()
    file.readLine()
    file.readLine()
    local direction = file.readLine()
    file.close()
    moveTo(startX, startY, startZ)
    faceDirection(direction)
end

function checkPos()
    local startX, startY, startZ = getCoordinates()
    local startDirection = getDirection()
    os.sleep(1)
    local file = fs.open("Settings", "r")
    local posX = file.readLine()
    local posY = file.readLine()
    local posZ = file.readLine()
    skipLines(file, 3)
    local posDirection = file.readLine()
    if (startX == posX and startY == posY and startZ == posZ and startDirection == posDirection) then
        return true
    else
        return false
    end
end

function farm()
    local file = fs.open("Settings", "r")
    skipLines(file, 3)
    local length = file.readLine()
    local width = file.readLine()
    local orientation = file.readLine()
    local firstTurn
    if (orientation == "LEFT") then
        firstTurn = turtle.turnLeft
    else
        firstTurn = turtle.turnRight
    end

    keepDigging()
    turtle.forward()
    firstTurn()

    for row = 1, length do
        for col = 1, width - 1 do
            getCrop()
            keepDigging()
            turtle.forward()
        end
        getCrop()
        oppositeTurn(firstTurn)
        turtle.forward()
        firstTurn = oppositeTurn(firstTurn)
    end

    resetPos()
    if (not checkPos()) then
        error("TURTLE HAS NOT GONE TO ORIGINAL FARMING COORDINATES! ANALYZE CODE!")
    else
        printColor(colors.green, "TURTLE HAS SUCCESSFULLY RESET ITS POSITION!\n\nREADY TO RESTART...")
    end
end