local signText = "Default sign text. To change the text, type 'edit sign' in your computer terminal"
local textSize = 1

local signMonitor = nil


if peripheral.getType("back") == "monitor" then
    signMonitor = peripheral.wrap("back")
    print("found monitor on the back")
elseif peripheral.getType("left") == "monitor" then
    signMonitor = peripheral.wrap("left")
    print("found monitor on the left")
elseif peripheral.getType("right") == "monitor" then
    signMonitor = peripheral.wrap("right")
    print("found monitor on the right")
elseif peripheral.getType("top") == "monitor" then
    signMonitor = peripheral.wrap("top")
    print("found monitor on the top")
elseif peripheral.getType("bottom") == "monitor" then
    signMonitor = peripheral.wrap("bottom")
    print("found monitor on the bottom")
else
    print("No Monitor found")
end

if signMonitor then
    signMonitor.clear()
    signMonitor.setCursorPos(1,1)
    signMonitor.setTextScale(textSize)
    local w,h = signMonitor.getSize()
    local len = string.len(signText)
    local totalLines = math.ceil(len/w)
    local lines = {}
    local words = {}
    print("should be "..totalLines.." lines")
    for word in signText:gmatch("%S+") do table.insert(words,word) end
    while #words>0 do
        local lineFinished=false
        local newLine = ""
        while lineFinished == false do
            if #words>0 and #newLine + #words[1] +1 < w then
                local word = table.remove(words,1)
                newLine = newLine.." "..word
            else
                table.insert(lines,newLine)
                print("added a new line")
                lineFinished=true
            end
        end
    end


    print(w.."/"..h)

    local y = 1
    for i,v in ipairs(lines) do
        signMonitor.setCursorPos(1,y)
        signMonitor.write(v)
        y = y +1
    end

else
    print("place a monitor next to the computer and try again")
end