Combination Lock

os.loadAPI("rs")

if fs.exists("pass.txt") then
    hRead = assert(fs.open("pass.txt", "r"))
        pass1 = hRead.readLine(1)
        pass2 = hRead.readLine(2)
        pass3 = hRead.readLine(3)
        pass4 = hRead.readLine(4)
            print("User Password:")
            print(pass1)
            print(pass2)
            print(pass3)
            print(pass4)
    hRead.close()

if fs.exists("admin.txt") then
    hRead = assert(fs.open("admin.txt", "r"))
        admin1 = hRead.readLine(1)
        admin2 = hRead.readLine(2)
        admin3 = hRead.readLine(3)
        admin4 = hRead.readLine(4)
            print("Admin Password:")
            print(admin1)
            print(admin2)
            print(admin3)
            print(admin4)
    hRead.close()
end

a=0
b=0
c=0
d=0
m=0

while true do

    while true do
        m = rs.getBundledInput("right")
        admin = false
        if m == then
            admin = true
            print("Admin Mode")
        end

    repeat

a = rs.getBundledInput("right")

    if a == 32768 then
        os.reboot()
    end
        print("A")
until a ~= 0
repeat
print("A-")

os.pullEvent("redstone")
    b = rs.getBundledInput("right")
        if b == 32768 then
            os.reboot()
        end
    print("B")
until b ~= 0
repeat

os.pullEvent("redstone")
    c = rs.getBundledInput("right")
        if c == 32768 then
            os.reboot()
        end
    print("C")
until c ~= 0
repeat

os.pullEvent("redstone")
    d = rs.getBundledInput("right")
        if d == 32768 then
            os.reboot()
end
print("D")
until d ~= 0
print(a)
print(b)
print(c)
print(d)

if admin then
    print("admin")
        hWrite = fs.open("pass.txt", "w")
            hWrite.writeLine(a)
            hWrite.writeLine(b)
            hWrite.writeLine(c)
            hWrite.writeLine(d)
        hWrite.close()
    os.reboot()
end

passc = pass1..pass2..pass3..pass4
adminc = admin1..admin2..admin3..admin4
passi = a..b..c..d

if passi== adminc then
    rs.setOutput("top", true)
        sleep(8)
    rs.setOutput("top", false)
end

if passi==passc then
    print("Opening Spawn Exit")
        shell.run("OpenD")
            sleep(5)
    shell.run("CloseD")
else
    break
end

end
print("cycle")
sleep(1.2)
end