SSE Startup

tColors = {
  ["m_bg"] = colors.white,
  ["m_text"] = colors.black,
  ["t_bg"] = colors.blue,
  ["t_text"] = colors.white,
  ["b1_bg"] = colors.green,
  ["b2_bg"] = colors.cyan,
  ["b3_bg"] = colors.orange,
  ["b_text"] = colors.white
}

tButton = {
  ["b1_x"] = 4,
  ["b1_y"] = 6,
  ["b1_w"] = 9,
  ["b1_h"] = 3,
  ["b1_text"] = "Login",
  ["b2_x"] = 4,
  ["b2_y"] = 10,
  ["b2_w"] = 12,
  ["b2_h"] = 3,
  ["b2_text"] = "Register",
  ["b3_x"] = 4,
  ["b3_y"] = 14,
  ["b3_w"] = 12,
  ["b3_h"] = 3,
  ["b3_text"] = "Shutdown",
}

function drawBox(x,y,w,h,cb,ct,text)
  term.setBackgroundColor(cb)
  term.setTextColor(ct)
  term.setCursorPos(x,y)
  for i=1,h do
    for i=1,w do
      write(" ")
    end
    term.setCursorPos(x,y+i)
  end
  term.setCursorPos(x+(w/2)-(#text/2),y+(h/2))
  print(text)
end

if not fs.exists("/sse/sse_login") or not fs.exists("/sse/sse_register") then
  if not fs.exists("/sse/.users/") then
    if not fs.exists("/sse") then
      error("No installation of SSE found")
    else
      fs.makeDir("/sse/.users")
    end
  else
    error("Installation incomplete (missing Register/Login pages)")
  end
end

term.setBackgroundColor(tColors["m_bg"])
term.clear()
term.setCursorPos(1,2)
term.setBackgroundColor(tColors["t_bg"])
term.clearLine()
term.setCursorPos(2,2)
term.setTextColor(tColors["t_text"])
print("Security System Example")

drawBox(tButton["b1_x"],tButton["b1_y"],tButton["b1_w"],tButton["b1_h"],tColors["b1_bg"],tColors["b_text"],tButton["b1_text"])
drawBox(tButton["b2_x"],tButton["b2_y"],tButton["b2_w"],tButton["b2_h"],tColors["b2_bg"],tColors["b_text"],tButton["b2_text"])
drawBox(tButton["b3_x"],tButton["b3_y"],tButton["b3_w"],tButton["b3_h"],tColors["b3_bg"],tColors["b_text"],tButton["b3_text"])

bRunning = true
while bRunning do
  local event, button, X, Y = os.pullEvent()
  if event == "mouse_click" then
    if button == 1 then
      if X >= tButton["b1_x"] and X <= (tButton["b1_x"] + tButton["b1_w"] - 1) and Y >= tButton["b1_y"] and Y <= (tButton["b1_y"] + tButton["b1_h"] - 1) then
        shell.run("/sse/sse_login")
        bRunning = false
      elseif X >= tButton["b2_x"] and X <= (tButton["b2_x"] + tButton["b2_w"] - 1) and Y >= tButton["b2_y"] and Y <= (tButton["b2_y"] + tButton["b2_h"] - 1) then
        shell.run("/sse/sse_register")
        bRunning = false
      elseif X >= tButton["b3_x"] and X <= (tButton["b3_x"] + tButton["b3_w"] - 1) and Y >= tButton["b3_y"] and Y <= (tButton["b3_y"] + tButton["b3_h"] - 1) then
        os.shutdown()
      end
    end
  end
end