Computercraft/Computronics Tape DJ Program - Swap and Hot Swap

args = {...}
-- Change this to any connected monitor you want to use for system output
mon = peripheral.wrap("monitor_2")
-- This is the terminal's screen. Do not touch this!
ter = term.current()
-- If there are no arguments in the command then...
if args == nil then
term.setTextColor(colors.red)
print("Warning: No parameters given!")
print("Use \"swap #\" to select a drive")
-- Otherwise, if there are arguments, if they match the case do...
else
    if args[1] == "1" then
        print("Swapping to Drive 1")
        -- Sets the tape command to refer to the connected tape drive. Change this to whatever drive you want to use
        -- Copy this if/elseif section to connect more drives
        -- Stops the other tapes and rewinds them. If the 'hot' argument is given as the second argument, it will not rewind them
        if args[2] == nil then
            tape = peripheral.wrap("tape_drive_1")
            tape.stop()
            tape.seek(-tape.getSize())
            tape = peripheral.wrap("tape_drive_2")
            tape.stop()
            tape.seek(-tape.getSize())
        elseif args[2] == "hot" then
            tape = peripheral.wrap("tape_drive_1")
            tape.stop()
            tape = peripheral.wrap("tape_drive_2")
            tape.stop()
        end
            tape = peripheral.wrap("tape_drive_0")
        -- Displays a "Now Playing" message on the connected monitor
        print("Now Playing: " .. tape.getLabel())
        term.redirect(mon)
        term.setTextColor(colors.orange)
        print("Swapping to:")
        print(tape.getLabel())
        term.redirect(ter)
    elseif args[1] == "2" then
        print("Swapping to Drive 2")
        if args[2] == nil then
            tape = peripheral.wrap("tape_drive_0")
            tape.stop()
            tape.seek(-tape.getSize())
            tape = peripheral.wrap("tape_drive_2")
            tape.stop()
            tape.seek(-tape.getSize())
        elseif args[2] == "hot" then
            tape = peripheral.wrap("tape_drive_0")
            tape.stop()
            tape = peripheral.wrap("tape_drive_2")
            tape.stop()
        end
        tape = peripheral.wrap("tape_drive_1")
        print("Now Playing: " .. tape.getLabel())
        term.redirect(mon)
        term.setTextColor(colors.orange)
        print("Swapping to:")
        print(tape.getLabel())
        term.redirect(ter)
    elseif args[1] == "3" then
        print("Swapping to Drive 3")
        if args[2] == nil then
            tape = peripheral.wrap("tape_drive_0")
            tape.stop()
            tape.seek(-tape.getSize())
            tape = peripheral.wrap("tape_drive_1")
            tape.stop()
            tape.seek(-tape.getSize())
        elseif args[2] == "hot" then
            tape = peripheral.wrap("tape_drive_0")
            tape.stop()
            tape = peripheral.wrap("tape_drive_1")
            tape.stop()
        end
        tape = peripheral.wrap("tape_drive_2")
        print("Now Playing: " .. tape.getLabel())
        term.redirect(mon)
        term.setTextColor(colors.orange)
        print("Swapping to:")
        print(tape.getLabel())
        term.redirect(ter)
    end
    -- Rewinds and plays the tape for the selected drive. If the 'hot' argument is given, it won't rewind the tape before playing
    if args[2] == nil then
        tape.seek(-tape.getSize())
    elseif args[2] == "hot" then
        print("Hot Swapping")
    end
    tape.play()
end