coz_core

local tX,tY,cX,cY

function getVersion()
  ver = "0.1"
  return ver
end

-- BASIC FUNCTIONS

function clear(delay)
  if delay == true then
    os.sleep(1)
  end
  term.clear()
  term.setCursorPos(1,1)
end

function newLine(indent)
  if indent == nil then
    indent = 0
  end

  cX,cY = term.getCursorPos()
  term.setCursorPos(1+indent,cY+1)
end

function cPrint(text,line)
  if line == nil then
    cX,cY = term.getCursorPos()
    line = cY
  end

  tX,tY = term.getSize()
  term.setCursorPos( (tX/2) - (#text/2), line  )

  term.write(text)
end

-- END OF BASIC FUNCTIONS

function drawAlertBox()
  tX,tY = term.getSize()
  temp = (tY/2)-4

  term.setCursorPos(1,temp)
  for i=1,7 do
    if i%7 == 0 or i%7 == 1 then
      cPrint("*******************************") newLine()
    else
      cPrint("*                             *") newLine()
    end
  end
end

function alertBox(info)
  drawAlertBox()
  term.setCursorPos(1,(tY/2)-2)
  cPrint(info)
  term.setCursorPos(1,tY-1)
end

-- FILE HANDLES

function addLinetoFile(text,file)
  temp = {}
    if not fs.exists(file) then
      print("Creating file")
      clear(true)
      f = io.open(file,"w")
      f:close()
    end
  f = io.open(file,"r")
    if f == nil then
      error("Failed to load")
      return nil
    end

    for line in f:lines() do
      temp[#temp+1] = line
    end
  temp[#temp+1] = text
  f:close()
  f = fs.open(file,"w")
    for i=1,#temp do
      f.writeLine(temp[i])
    end
  f:close()
end

function delLinefromFile(text,file)
  temp = {}
  f = io.open(file,"r")
    if f == nil then
      error("File not Found")
      return nil
    end

    for line in f:lines() do
      if not(string.lower(line) == string.lower(text)) then
        temp[#temp+1] = line
      end
    end
  f:close()
  f = fs.open(file,"w")
    if f == nil then
      return nil
    end

    for i=1,#temp do
      f.writeLine(temp[i])
    end
  f.close()
end