--[[
    Stargate Control System - Main Entry Point
    For Stargate Journey Mod - AllTheMods 9

    Comprehensive control program featuring:
    - Full dialing system with touch screen interface
    - Automatic iris control with security features
    - Incoming/outgoing wormhole management
    - Address book with categories
    - Entity tracking and logging
    - Whitelist/blacklist security
]]

---------------------------------------------
-- LOAD MODULES
---------------------------------------------

local config = require("config")

---------------------------------------------
-- AUTO-UPDATE SYSTEM
---------------------------------------------

local function autoUpdate()
    if not (config.autoUpdate and http) then
        return false
    end

    print("Checking for program updates...")

    local filesToUpdate = {
        "startup.lua",
        "addresses.lua",
        "utils.lua",
        "display.lua",
        "events.lua",
        "handlers.lua"
    }

    local updated = false

    for _, filename in ipairs(filesToUpdate) do
        local url = config.repoBaseUrl .. filename
        local response = http.get(url)

        if response then
            local newContent = response.readAll()
            response.close()

            -- Check if file exists and compare content
            local needsUpdate = true
            if fs.exists(filename) then
                local file = fs.open(filename, "r")
                if file then
                    local currentContent = file.readAll()
                    file.close()

                    -- Only update if content is different
                    if currentContent == newContent then
                        needsUpdate = false
                        print("  [SKIP] " .. filename .. " (unchanged)")
                    end
                end
            end

            if needsUpdate then
                -- Delete old file if it exists
                if fs.exists(filename) then
                    fs.delete(filename)
                end

                local file = fs.open(filename, "w")
                if file then
                    file.write(newContent)
                    file.close()
                    print("  [UPDATE] " .. filename)
                    updated = true
                else
                    print("  [FAIL] Could not write " .. filename)
                end
            end
        else
            print("  [SKIP] Could not download " .. filename)
        end
    end

    return updated
end

-- Perform auto-update
if autoUpdate() then
    print("Program updated! Restarting...")
    sleep(2)
    os.reboot()
end

local addresses = require("addresses")
local utils = require("utils")
local display = require("display")
local events = require("events")
local handlers = require("handlers")

---------------------------------------------
-- INITIALIZATION
---------------------------------------------

-- Find and initialize peripherals
local mon = peripheral.find("monitor")
local gate = peripheral.find("advanced_crystal_interface")
    or peripheral.find("crystal_interface")
    or peripheral.find("basic_interface")
local transceiver = peripheral.find("transceiver")
local chatBox = peripheral.find("chatBox")

if gate == nil then
    error("Stargate interface not found! Please connect an interface.")
end

if mon == nil then
    error("Monitor not found! Please connect a monitor.")
end

if transceiver == nil then
    print("WARNING: No transceiver found. Remote iris detection and GDO support disabled.")
end

if chatBox == nil and config.enableChatboxDebug then
    print("WARNING: No chatbox found. Debug messages disabled.")
    config.enableChatboxDebug = false
end

-- Check iris availability
if gate.getIris() == nil then
    print("Config has Iris enabled, but there is no iris! Disabling Iris")
    config.irisEnabled = false
end

-- Get local gate address
local localGateAddress = gate.getLocalAddress()
if localGateAddress then
    print("Local gate address: " .. gate.addressToString(localGateAddress))
else
    print("WARNING: Could not read local gate address")
end

-- Initialize modules
utils.init(config, gate)
display.init(mon, config, addresses, utils, localGateAddress)
handlers.init(config, gate, mon, utils, display, events)

-- Configure transceiver IDC after utils is initialized (so we can use utils.log)
if transceiver and config.enableGDO and config.irisPassword then
    local idcCode = config.irisPassword
    if idcCode then
        transceiver.setCurrentCode(idcCode)
        utils.log("Transceiver IDC configured to: " .. idcCode)
    else
        print("WARNING: irisPassword must be a number for GDO support")
    end
end

-- Helper function for chatbox debugging
local function debugChat(message)
    if config.enableChatboxDebug and chatBox then
        chatBox.sendMessageToPlayer("[SGC] " .. message, config.chatboxDebugPlayer)
    end
end

-- Ensure gate starts disconnected
gate.disconnectStargate()

-- Set iris to default state
if config.irisEnabled then
    if config.irisClosedByDefault then
        gate.closeIris()
    else
        gate.openIris()
    end
end

---------------------------------------------
-- GLOBAL STATE
---------------------------------------------

local dialing = false
local totalstate = nil
local disconnect = false
local selx, sely = 0, 0
local y = 0

-- Get shared state from handlers
local function getState()
    return handlers.getState()
end

---------------------------------------------
-- EVENT HANDLERS (Using centralized event system)
---------------------------------------------

local function GetClick()
    mon.setTextScale(1)
    local result, eventType, eventData = events.pullEvent("monitor_touch")

    -- eventData is {eventType, side, x, y}
    if result == "disconnect" then
        return 0, 0
    elseif type(result) == "table" and result.x and result.y then
        return result.x, result.y
    else
        -- Fallback: extract from eventData
        return eventData[3] or 0, eventData[4] or 0
    end
end

local function GetActivation()
    local result = events.pullEvent("stargate_incoming_wormhole")
    return 1
end

local function ParaDisconnect()
    -- Now handled by event system with priority
    while true do
        local result = events.pullEvent("monitor_touch")
        if result == "disconnect" then
            return 1
        end
    end
end

local function EntityRead()
    sleep(0.1)
    local result = events.pullEvent("stargate_reconstructing_entity")
    return 1
end

local function DisconnectCheck()
    local result = events.pullEvent("stargate_disconnected")
    return 2
end

local function Paratimeout()
    sleep(300)
    return 2
end

local function GetMessage()
    local result = events.pullEvent("stargate_message_received")
    return 1
end

local function GetGDOTransmission()
    local result = events.pullEvent("transceiver_transmission_received")
    return 2
end

local function HandlePasswordEntry()
    return handlers.handlePasswordInput()
end

local function HandleIncomingPasswordRequest(password)
    -- Check if password matches
    if config.irisPassword and password == config.irisPassword then
        utils.log("Correct password received, opening iris")
        utils.openIris()
        utils.sendPasswordResponse(true)
        debugChat("Sent: IRIS_OPEN")
        return true
    else
        utils.log("Incorrect password received")
        utils.sendPasswordResponse(false)
        debugChat("Sent: IRIS_DENIED")
        return false
    end
end

local function MonitorRemoteIris()
    -- Continuously monitor remote iris state while connected
    local lastIrisState = nil
    local state = getState()

    while gate.isStargateConnected() do
        sleep(0.5) -- Check every half second

        if transceiver then
            local remoteIrisState = transceiver.checkConnectedShielding()

            -- Only update display if state changed
            if remoteIrisState ~= lastIrisState then
                if remoteIrisState and remoteIrisState > 0 then
                    -- Remote iris closed or closing
                    if remoteIrisState == 100 then
                        utils.log("ALERT: Remote iris fully closed during connection!")
                    else
                        utils.log("ALERT: Remote iris moving: " .. remoteIrisState .. "%")
                    end

                    -- If remote has computer and iris just became fully closed, check for password request
                    if state.remoteHasComputer and remoteIrisState == 100 and (not lastIrisState or lastIrisState < 100) then
                        utils.log("Remote iris closed and computer detected - checking for password request")

                        -- Check if password was already requested during initial connection
                        if state.remotePasswordRequired then
                            utils.log("Password already requested - showing password prompt")

                            local password = HandlePasswordEntry()

                            -- Wait for response
                            local function WaitForResponse()
                                sleep(3) -- Wait up to 3 seconds for response
                                return nil
                            end

                            local result = parallel.waitForAny(GetMessage, WaitForResponse)
                            if result == 1 then
                                local response = state.lastReceivedMessage
                                state.lastReceivedMessage = nil
                                if response == "IRIS_OPEN" then
                                    display.showPasswordResult(true)
                                    utils.log("Password accepted - iris opened")
                                    -- Continue monitoring, iris state will update
                                elseif response == "IRIS_DENIED" then
                                    display.showPasswordResult(false)
                                    utils.log("Password rejected")
                                end
                            end
                        else
                            -- Wait briefly for password request message if not already received
                            utils.log("Waiting for password request message")
                            local function WaitForPasswordRequest()
                                sleep(2) -- Wait up to 2 seconds for password request
                                return nil
                            end

                            local result = parallel.waitForAny(GetMessage, WaitForPasswordRequest)
                            if result == 1 then
                                local message = state.lastReceivedMessage
                                state.lastReceivedMessage = nil

                                -- Only show password panel if explicitly requested
                                if message == "IRIS_PASSWORD_REQUIRED" then
                                    utils.log("Password requested by remote gate - showing password prompt")

                                    local password = HandlePasswordEntry()

                                    -- Wait for response
                                    local function WaitForResponse()
                                        sleep(3) -- Wait up to 3 seconds for response
                                        return nil
                                    end

                                    result = parallel.waitForAny(GetMessage, WaitForResponse)
                                    if result == 1 then
                                        local response = state.lastReceivedMessage
                                        state.lastReceivedMessage = nil
                                        if response == "IRIS_OPEN" then
                                            display.showPasswordResult(true)
                                            utils.log("Password accepted - iris opened")
                                            -- Continue monitoring, iris state will update
                                        elseif response == "IRIS_DENIED" then
                                            display.showPasswordResult(false)
                                            utils.log("Password rejected")
                                        end
                                    end
                                end
                            end
                        end

                        -- Re-check iris state after password attempt
                        remoteIrisState = transceiver.checkConnectedShielding()
                    end

                    -- Show warning screen if iris still closed
                    if remoteIrisState and remoteIrisState > 0 then
                        mon.setBackgroundColor(colors.red)
                        mon.clear()
                        mon.setTextScale(1)
                        mon.setCursorPos(6, 5)
                        mon.write("REMOTE IRIS")
                        mon.setCursorPos(8, 7)
                        if remoteIrisState == 100 then
                            mon.write("CLOSED!")
                        else
                            mon.write(remoteIrisState .. "% CLOSED")
                        end
                        mon.setCursorPos(3, 10)
                        mon.write("Connection unsafe")
                        display.drawIrisStatus()
                        display.drawDisconnectButton()
                    else
                        display.showConnected(state.destAddressname, state.destAddress)
                    end
                else
                    -- Remote iris is open (0 or nil)
                    if lastIrisState and lastIrisState > 0 then
                        -- Iris just opened
                        utils.log("Remote iris opened - connection safe")
                        -- Open local iris now that connection is safe
                        if config.irisEnabled then
                            utils.openIris()
                        end
                    end
                    display.showConnected(state.destAddressname, state.destAddress)
                end

                lastIrisState = remoteIrisState
            end
        end
    end
    return 3 -- Return unique value to indicate iris monitoring ended
end

---------------------------------------------
-- INCOMING WORMHOLE HANDLER
---------------------------------------------

local function findAddressName(address)
    -- Search all address categories for matching address
    local categories = { addresses.MainGates, addresses.playerGates, addresses.hazardGates }

    for _, category in ipairs(categories) do
        for _, entry in ipairs(category) do
            local name, storedAddress = entry[1], entry[2]
            -- Compare addresses (excluding point of origin)
            if #address == #storedAddress then
                local match = true
                for i = 1, #address do
                    if address[i] ~= storedAddress[i] then
                        match = false
                        break
                    end
                end
                if match then
                    return name
                end
            end
        end
    end

    return nil -- Not found in address book
end

local function handleIncomingWormhole()
    local state = getState()

    -- Setup event handlers for this connection
    handlers.setupConnectionHandlers()

    mon.setBackgroundColor(colors.black)
    mon.clear()
    mon.setBackgroundColor(colors.red)
    mon.setTextScale(1)
    mon.setCursorPos(9, 4)
    mon.write("INCOMING")

    state.incomingAddress = utils.addressToTable(state.incomingAddress)

    -- Check security
    local allowed, reason = utils.isAddressAllowed(state.incomingAddress)
    local addressString = gate.addressToString(state.incomingAddress) or "Unknown"

    -- Look up address name in address book
    local addressName = findAddressName(state.incomingAddress)

    utils.log("Incoming wormhole from: " .. (addressName or addressString) .. " " .. reason)

    -- Show incoming connection status
    display.showIncoming(addressName, addressString, allowed, reason)

    -- Send version message to remote gate
    sleep(0.5) -- Brief delay to ensure connection is stable
    utils.sendVersionMessage()
    debugChat("Sent: SGCS_V" .. config.programVersion)

    -- Handle iris
    if config.autoCloseIrisOnIncoming then
        sleep(config.irisCloseDelay)
        if allowed then
            -- Wait 2 seconds after connection established before opening iris
            sleep(2)
            utils.openIris()
        else
            utils.closeIris()
            -- Send password request if iris is closed and password system is enabled
            if config.irisPassword and config.enableMessaging then
                utils.sendPasswordRequest()
                debugChat("Sent: IRIS_PASSWORD_REQUIRED")
            end
        end
    end

    -- Monitor for entities
    disconnect = false
    while (disconnect == false) do
        -- parallel.waitForAny runs multiple functions at the same time and returns which one finished first
        -- Here we're watching for things simultaneously:
        --   1 = EntityRead (someone/something came through the gate)
        --   2 = DisconnectCheck (gate disconnected on its own)
        --   3 = GetMessage (received a message from remote gate)
        --   4 = GetGDOTransmission (received GDO code)
        --   ParaDisconnect (user clicked screen to manually disconnect)
        -- Whichever happens first, that function returns and we handle it
        local result = parallel.waitForAny(EntityRead, DisconnectCheck, GetMessage, GetGDOTransmission, ParaDisconnect)
        if (result == 1) then
            display.showEntity(state.incomingEntityType, state.incomingEntityName, allowed)
            state.incomingEntityType = ""
            state.incomingEntityName = ""
        elseif (result == 3) then
            -- Received a message
            local message = state.lastReceivedMessage
            debugChat("Received: " .. tostring(message))

            -- Check if it's a password attempt (don't log passwords in plaintext)
            if message:sub(1, 14) == "IRIS_PASSWORD:" then
                utils.log("Received password attempt")
                local password = message:sub(15)
                local passwordAccepted = HandleIncomingPasswordRequest(password)
                if passwordAccepted then
                    -- Update allowed status so entities don't show as impacts
                    allowed = true
                end
            else
                utils.log("Received message: " .. message)
            end
            state.lastReceivedMessage = nil
        elseif (result == 4) then
            -- GDO transmission received (already handled by event system)
            utils.log("GDO transmission processed")
        else
            disconnect = true
        end
    end
    disconnect = false
end

---------------------------------------------
-- DIALING FUNCTIONS
---------------------------------------------

local function dialGate(address)
    tmp = utils.deepcopy(address)
    table.remove(tmp)
    utils.log("Dialing: " .. gate.addressToString(tmp))

    local gateType = gate.getStargateType()

    -- Manual Milky Way dialing with ring rotation
    if gateType == "sgjourney:milky_way_stargate" and config.manualDial == true then
        local addressLength = #address

        if addressLength == 8 then
            gate.setChevronConfiguration({ 1, 2, 3, 4, 6, 7, 8, 5 })
        elseif addressLength == 9 then
            gate.setChevronConfiguration({ 1, 2, 3, 4, 5, 6, 7, 8 })
        end

        local start = gate.getChevronsEngaged() + 1

        for chevron = start, addressLength, 1 do
            local symbol = address[chevron]

            if chevron % 2 == 0 then
                gate.rotateClockwise(symbol)
            else
                gate.rotateAntiClockwise(symbol)
            end

            while (not gate.isCurrentSymbol(symbol)) do
                sleep(0)
            end

            gate.openChevron()
            sleep(1)
            gate.closeChevron()
            sleep(0.5)

            display.showDialing(chevron, symbol, gateType)
        end
    else
        -- Automatic dialing for other gate types
        if gateType ~= "sgjourney:universe_stargate" then
            local addressLength = #address
            if addressLength == 8 then
                gate.setChevronConfiguration({ 1, 2, 3, 4, 6, 7, 8, 5 })
            elseif addressLength == 9 then
                gate.setChevronConfiguration({ 1, 2, 3, 4, 5, 6, 7, 8 })
            end
        end

        local start = gate.getChevronsEngaged() + 1

        for chevron = start, #address, 1 do
            local symbol = address[chevron]

            gate.engageSymbol(symbol)
            sleep(config.gatespeed)

            display.showDialing(chevron, symbol, gateType)

            if (symbol) ~= 0 then
                if (gateType == "sgjourney:universe_stargate") or (gateType == "sgjourney:pegasus_stargate") then
                    os.pullEvent("stargate_chevron_engaged")
                end
            else
                if gateType == "sgjourney:universe_stargate" then
                    os.pullEvent("stargate_chevron_engaged")
                    redstone.setOutput("top", true)
                elseif (gateType == "sgjourney:pegasus_stargate") then
                    os.pullEvent("stargate_chevron_engaged")
                end
            end
        end
    end
end

local function selectGateFromList()
    local state = getState()
    local selecting = true
    while dialing == false and selecting == true do
        selx, sely = GetClick()
        local buttonXY, computerAddresses, computerNames = display.getButtonData()

        for i = 1, #buttonXY do
            if (sely == buttonXY[i][3]) and ((selx >= buttonXY[i][1]) and (selx <= buttonXY[i][2])) then
                dialGate(computerAddresses[i])
                state.destAddressname = computerNames[i]
                state.destAddress = computerAddresses[i]
                dialing = true
                sely = 0
                selx = 0
                break
            end
        end

        -- Check back button (x: 23-28, y: 17-19)
        if not dialing and sely >= 17 and sely <= 19 and selx >= 23 and selx <= 28 then
            selecting = false
            sely = 0
            selx = 0
        end
    end

    display.clearButtonData()
    return dialing
end

local function selectCategory()
    local state = true

    while state == true do
        display.selectionTabs()

        local tabx, taby = GetClick()
        y = 2
        local count = 0

        if (taby >= 2) and (taby <= 6) and ((tabx >= 2) and (tabx <= 13)) then
            if #addresses.MainGates ~= 0 then
                mon.setBackgroundColor(colors.black)
                mon.clear()
                mon.setBackgroundColor(colors.purple)
                count, y = display.screenWrite(addresses.MainGates, count, y)

                local returnstate = selectGateFromList()
                if returnstate == true then
                    state = false
                end

                display.clearButtonData()
            else
                mon.setCursorPos(9, 7)
                mon.write("no gates available")
                sleep(5)
            end
        elseif (taby >= 2) and (taby <= 6) and ((tabx >= 16) and (tabx <= 27)) then
            if #addresses.playerGates ~= 0 then
                mon.setBackgroundColor(colors.black)
                mon.clear()
                mon.setBackgroundColor(colors.green)
                count, y = display.screenWrite(addresses.playerGates, count, y)

                local returnstate = selectGateFromList()
                if returnstate == true then
                    state = false
                end

                display.clearButtonData()
            else
                mon.setCursorPos(9, 7)
                mon.write("no gates available")
                sleep(5)
            end
        elseif (((taby >= 8) and (taby <= 12)) and ((tabx >= 2) and (tabx <= 13))) and (config.canAccessHazardGates == true) then
            if (#addresses.hazardGates ~= 0) and (config.canAccessHazardGates == true) then
                mon.setBackgroundColor(colors.black)
                mon.clear()
                mon.setBackgroundColor(colors.red)
                count, y = display.screenWrite(addresses.hazardGates, count, y)

                local returnstate = selectGateFromList()
                if returnstate == true then
                    state = false
                end

                display.clearButtonData()
            else
                mon.setCursorPos(9, 7)
                mon.write("no gates available")
                sleep(5)
            end
        elseif (taby >= 17) and (tabx >= 23) then
            state = false
            totalstate = false
        end
    end
    return 1
end

local function handleOutgoingDial()
    local state = getState()

    -- Setup event handlers for this connection
    handlers.setupConnectionHandlers()

    totalstate = true
    local PDO = 0
    PDO = parallel.waitForAny(selectCategory, Paratimeout)

    if (PDO == 1) and totalstate == true then
        sleep(1)

        os.pullEvent("stargate_outgoing_wormhole")

        -- Wait briefly for version message and password request from remote gate
        state.remoteHasComputer = false
        state.remotePasswordRequired = false

        -- Collect messages for up to 2 seconds
        local startTime = os.clock()
        local lastMessageTime = startTime
        while (os.clock() - startTime) < 2 and gate.isStargateConnected() do
            local result = parallel.waitForAny(GetMessage, GetGDOTransmission, function()
                sleep(0.3); return -1
            end)
            if result == 1 then
                local message = state.lastReceivedMessage
                state.lastReceivedMessage = nil

                -- DEBUG: Print all messages received
                print("DEBUG: Message received: " .. tostring(message))
                utils.log("DEBUG: Message received: " .. tostring(message))
                debugChat("Received: " .. tostring(message))

                if message and message:sub(1, 6) == "SGCS_V" then
                    state.remoteHasComputer = true
                    local version = message:sub(7)
                    utils.log("Remote gate has control system version " .. version)
                    lastMessageTime = os.clock()
                elseif message == "IRIS_PASSWORD_REQUIRED" then
                    state.remotePasswordRequired = true
                    utils.log("Remote gate requires password for entry")
                    lastMessageTime = os.clock()
                    break -- Got password request, that's all we need
                end
            elseif result == 2 then
                -- GDO transmission received (handled by event system)
                utils.log("GDO transmission detected")
                lastMessageTime = os.clock()
            else
                -- Timeout - if we got a version message, assume no password required
                if state.remoteHasComputer and (os.clock() - lastMessageTime) > 0.5 then
                    print("DEBUG: Breaking - got version, no password request after 0.5s")
                    break -- No more messages coming
                elseif not state.remoteHasComputer and (os.clock() - startTime) > 1 then
                    print("DEBUG: Breaking - no version message after 1s")
                    break -- No computer at remote gate
                end
            end
        end

        print("DEBUG: Message collection complete. remoteHasComputer=" ..
            tostring(state.remoteHasComputer) .. ", remotePasswordRequired=" .. tostring(state.remotePasswordRequired))

        -- Check if remote iris is closed using transceiver
        local remoteIrisState = nil
        if transceiver then
            remoteIrisState = transceiver.checkConnectedShielding()
        end

        local connectionSafe = false

        if remoteIrisState and remoteIrisState > 0 then
            -- Remote iris is closed (partially or fully) - UNSAFE
            -- Close local iris to protect travelers
            if config.irisEnabled then
                utils.closeIris()
            end

            if remoteIrisState == 100 then
                utils.log("WARNING: Remote iris is fully closed!")
            else
                utils.log("WARNING: Remote iris is " .. remoteIrisState .. "% closed!")
            end

            -- If password is required and remote has computer, show prompt now
            if state.remotePasswordRequired and remoteIrisState == 100 then
                utils.log("Showing password prompt for remote gate")

                local password = HandlePasswordEntry()
                utils.sendPasswordAttempt(password)
                debugChat("Sent: IRIS_PASSWORD:" .. password)

                -- Wait for response
                local function WaitForResponse()
                    sleep(3) -- Wait up to 3 seconds for response
                    return nil
                end

                local result = parallel.waitForAny(GetMessage, WaitForResponse)
                if result == 1 then
                    local response = state.lastReceivedMessage
                    state.lastReceivedMessage = nil
                    if response == "IRIS_OPEN" then
                        display.showPasswordResult(true)
                        utils.log("Password accepted - iris opened")
                        sleep(1)
                        -- Re-check iris state
                        if transceiver then
                            remoteIrisState = transceiver.checkConnectedShielding()
                        end
                        if not remoteIrisState or remoteIrisState == 0 then
                            connectionSafe = true
                        end
                    elseif response == "IRIS_DENIED" then
                        display.showPasswordResult(false)
                        utils.log("Password rejected")
                        sleep(2)
                    end
                end
            end

            -- Show warning screen if iris still closed
            if not connectionSafe and remoteIrisState and remoteIrisState > 0 then
                mon.setBackgroundColor(colors.red)
                mon.clear()
                mon.setTextScale(1)
                mon.setCursorPos(6, 5)
                mon.write("REMOTE IRIS")
                mon.setCursorPos(8, 7)
                if remoteIrisState == 100 then
                    mon.write("CLOSED!")
                else
                    mon.write(remoteIrisState .. "% CLOSED")
                end
                mon.setCursorPos(3, 10)
                mon.write("Connection unsafe")
                display.drawIrisStatus()
                display.drawDisconnectButton()
            end
        else
            -- Remote iris is open or no iris present
            connectionSafe = true
        end

        -- Only open local iris if connection is safe
        if connectionSafe and config.irisEnabled then
            -- Wait 2 seconds to avoid voiding the iris
            sleep(2)
            utils.openIris()
            display.showConnected(state.destAddressname, state.destAddress)
        elseif connectionSafe then
            display.showConnected(state.destAddressname, state.destAddress)
        end

        if (gate.isStargateConnected() == true) then
            -- parallel.waitForAny runs functions at the same time, returns which finished first
            -- While the wormhole is open, we wait for:
            --   DisconnectCheck = gate disconnects naturally (timeout or remote disconnect)
            --   ParaDisconnect = user manually clicks screen to disconnect
            --   Paratimeout = safety timeout (5 minutes)
            --   MonitorRemoteIris = continuously checks remote iris state
            -- Whichever happens first ends the connection
            PDO = parallel.waitForAny(DisconnectCheck, ParaDisconnect, Paratimeout, MonitorRemoteIris)
            dialing = false
        end
    end

    display.clearButtonData()
    state.destAddress = {}
    state.destAddressname = ""
    state.remoteHasComputer = false
end

---------------------------------------------
-- MAIN MENU
---------------------------------------------

local function mainMenu()
    while true do
        -- Setup basic handlers for main menu
        handlers.setupConnectionHandlers()

        display.showMainMenu()
        local answer = parallel.waitForAny(GetClick, GetActivation)

        if (answer == 1) then
            handleOutgoingDial()
        else
            handleIncomingWormhole()
        end
    end
end

---------------------------------------------
-- STARTUP
---------------------------------------------

utils.log("=== Stargate Control System Starting ===")
utils.log("Gate Type: " .. gate.getStargateType())
utils.log("Iris Available: " .. tostring(config.irisEnabled))

-- Start the main menu
mainMenu()