doorLock

local args = {...}
local protocol = "doorOpener"
local hostname = "doorLock"

function main ()
    local detector = peripheral.find("playerDetector")
    rednet.host(protocol, hostname)

    parallel.waitForAny(
        -- physical
        function ()
            while true do
                -- player input
                term.clear()
                term.setCursorPos(1, 1)
                print ("Password: ")
                input = read("*")
                if input == "open" then
                    redstone.setOutput("bottom", true)
                    sleep(3)
                    redstone.setOutput("bottom", false)
                end
            end
        end,
        -- player detector
        function ()
            while true do
                local playerInRange = function (range)
                    local players = detector.getPlayersInRange(range)
                    return #players > 0
                end

                if detector ~= nil then
                    if playerInRange(3) then
                        redstone.setOutput("bottom", true)
                    else
                        redstone.setOutput("bottom", false)
                    end
                end
            end
        end,
        -- rednet recv
        function ()
            while true do
                if (peripheral.isPresent("back")) then
                    _, message, _ = rednet.receive(protocol)
                    local m = textutils.unserialize(message)
                    local x, y, z = gps.locate()
                    if m.x and m.y and m.z and math.floor(y) == math.floor(m.y) then
                        if math.floor(math.sqrt(math.pow(m.x - x, 2) + math.pow(m.z - z, 2))) < 10 then
                            redstone.setOutput("bottom", true)
                            sleep(5)
                            redstone.setOutput("bottom", false)
                        end
                    end
                end
            end
        end
    )


    rednet.unhost(protocol)
end

if args[1] == "update" then
    shell.run("pastebin", "run", "FuQ3WvPs B0699K9y doorLock")
else
    peripheral.wrap("top")
    if (peripheral.isPresent("back")) then
        rednet.open("back")
    end
    main()
    if (peripheral.isPresent("back")) then
        rednet.close("back")
    end
end