Generic Password Door

local function loadUser()
    local loadTable = {}
    local file = fs.open(".pass", "r")
    if file then
        readLine = file.readLine()
        while readLine do
            local lineTable = {}
            lineTable.user, lineTable.pass = string.match(readLine, "(%w+),(%w+)")
            if lineTable.type then
                table.insert(loadTable, lineTable)
            end
            readLine = file.readLine()
        end
        file.close()
    end
    return loadTable
end

--user check
local username,password = loadUser()
if usernamd == nil and password == nil then
    term.clear()
    term.setCursorPos(1,1)
    write("Please choose your Username: ")
    local user = read()
    term.clear()
    term.setCursorPos(1,1)
    write("Please choose your Password: ")
    local pass = read("*")
    local file = fs.open(".password","w")
    file.write(user..","..pass)
    file.close()
else
    while true do
        term.clear()
        termsetCursorPos(1,1)
        write("Please enter Username: ")
        local user = read()
        term.clear()
        term.setCursorPos(1,1)
        write("Please enter Password: ")
        local pass = read("*")
        if user == username and pass = password then
            redstone.setOutput("left",true)
            redstone.setOutput("right",true)
            sleep(3)
            redstone.setOutput("right",false)
            redstone.setOutput("left",false)
        end
    end
end