gui.lua

term = require("term")
io = require("io")

--| username : bob |                               | credits : 67099928834288838 |
--===============================================================================
--|   id   |            stock name           | buy price | sell price | quantity |
--------------------------------------------------------------------------------
--| 555444 | big name of a random item lalal | 127743000 | 9997581984 | 00990099 |

function fill(width, length)
  fillercount = width - length
  fillerspace = ""
  for i=1, fillercount do
    fillerspace = fillerspace.." "
  end
  return fillerspace
end

function split(inputstr, sep)
  local t={} ; i=1
  for str in string.gmatch(inputstr, "([^"..sep.."]+)") do
    t[i] = str
  i = i + 1
  end
  return t
end

function printUserInfo(info)
  fillerspace = fill(52, string.len(info["name"]) + string.len(info["credits"]))
  print("| username : "..info["name"]..fillerspace.."| credits : "..info["credits"].." |")
end

function printTableHeader()
  print("===============================================================================")
  print("|   id   |           stock name           | buy price | sell price | quantity |")
  print("-------------------------------------------------------------------------------")
end

function printItems(data, start, stop)
  for i, item in pairs(data) do
    if i >= start then
      if i >= stop then return end
      line = ""
      line = line.."| "..item["id"]..fill(6,string.len(item["id"])).." "
      line = line.."| "..item["name"]..fill(30,string.len(item["name"])).." "
      line = line.."| "..item["buy_price"]..fill(9,string.len(item["buy_price"])).." "
      line = line.."| "..item["sell_price"]..fill(10,string.len(item["sell_price"])).." "
      line = line.."| "..item["qty"]..fill(8,string.len(item["qty"])).." |"
      print(line)
    end
  end
end

function isValidCmd(cm)
  cmd = split(cm, " ")
  return cmd[1] == "r" or cmd[1] == "q" or cmd[1] == "b" or cmd[1] == "s" or cmd[1] == "n" or cmd[1] == "p"
end

function drawMain(data, user_info, page)
  term.clear()
  printUserInfo(user_info)
  printTableHeader()
  printItems(data, (20 * page) - 19, (20 * page) - 1)
print("===============================================================================")
  io.write("refresh (r) next (n) prev (p) buy (b) sell (s) quit (q): ")
end

function handleLogin()
  term.clear()
  io.write("login : ")
  name = io.read()
  io.write("password : ")
  pass = io.read()
  return name, pass
end

--printUserInfo(info)
--printTableHeader()
--printItems(data)