301 lines
9.1 KiB
Lua
301 lines
9.1 KiB
Lua
-- Inventory Manager Web Bridge
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-- Runs on a CC:Tweaked computer with a modem and HTTP access.
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-- Listens to the inventory master's broadcasts via modem and
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-- forwards state to the web server via HTTP.
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-- Also polls the web server for commands and sends them to the master.
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-------------------------------------------------
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-- Configuration
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-------------------------------------------------
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-- Web server URL (change to your Docker host IP/hostname)
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local SERVER_URL = "http://localhost"
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local POLL_INTERVAL = 0.5 -- seconds between command polls
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local STATE_INTERVAL = 1 -- seconds between state forwards
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-- Modem channels (must match inventoryManager.lua)
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local BROADCAST_CHANNEL = 4200
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local ORDER_CHANNEL = 4201
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-------------------------------------------------
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-- Load config from file if present
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-------------------------------------------------
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local CONFIG_FILE = ".webbridge_config"
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local function loadConfig()
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if fs.exists(CONFIG_FILE) then
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local f = fs.open(CONFIG_FILE, "r")
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local data = f.readAll()
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f.close()
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local ok, cfg = pcall(textutils.unserialiseJSON, data)
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if ok and cfg then
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if cfg.serverUrl then SERVER_URL = cfg.serverUrl end
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if cfg.pollInterval then POLL_INTERVAL = cfg.pollInterval end
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if cfg.stateInterval then STATE_INTERVAL = cfg.stateInterval end
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if cfg.apiKey then API_KEY = cfg.apiKey end
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print("[CONFIG] Loaded from " .. CONFIG_FILE)
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end
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end
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end
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-------------------------------------------------
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-- State
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-------------------------------------------------
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local latestState = nil -- last broadcast from master
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local modem = nil
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local modemName = nil
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local running = true
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local API_KEY = nil -- optional API key for server auth
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-------------------------------------------------
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-- Find modem
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-------------------------------------------------
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local function findModem()
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for _, name in ipairs(peripheral.getNames()) do
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if peripheral.getType(name) == "modem" then
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modem = peripheral.wrap(name)
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modemName = name
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modem.open(BROADCAST_CHANNEL)
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return true
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end
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end
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return false
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end
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-------------------------------------------------
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-- HTTP helpers
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-------------------------------------------------
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local function httpPost(path, body)
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local url = SERVER_URL .. path
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local data = textutils.serialiseJSON(body)
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local headers = { ["Content-Type"] = "application/json" }
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if API_KEY then headers["Authorization"] = "Bearer " .. API_KEY end
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local ok, err = pcall(function()
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local response = http.post(url, data, headers)
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if response then
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local responseData = response.readAll()
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response.close()
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return responseData
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end
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end)
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if not ok then
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-- Silent fail, will retry
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return nil
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end
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end
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local function httpGet(path)
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local url = SERVER_URL .. path
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local headers = nil
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if API_KEY then headers = { ["Authorization"] = "Bearer " .. API_KEY } end
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local ok, result = pcall(function()
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local response = http.get(url, headers)
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if response then
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local data = response.readAll()
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response.close()
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return textutils.unserialiseJSON(data)
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end
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end)
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if ok then
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return result
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end
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return nil
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end
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-------------------------------------------------
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-- Forward state to web server
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-------------------------------------------------
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local function forwardState()
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if not latestState then return end
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httpPost("/api/bridge/state", latestState)
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end
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-------------------------------------------------
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-- Process commands from web server
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-------------------------------------------------
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local function processCommand(cmd)
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if not modem then return end
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local action = cmd.action
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if not action then return end
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print(string.format("[CMD] %s", action))
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if action == "order" then
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modem.transmit(ORDER_CHANNEL, BROADCAST_CHANNEL, {
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type = "order",
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commandId = cmd.commandId,
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itemName = cmd.itemName,
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amount = cmd.amount,
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dropperName = cmd.dropperName,
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})
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elseif action == "scan" then
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modem.transmit(ORDER_CHANNEL, BROADCAST_CHANNEL, {
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type = "scan",
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commandId = cmd.commandId,
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})
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elseif action == "toggle_pause" then
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modem.transmit(ORDER_CHANNEL, BROADCAST_CHANNEL, {
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type = "toggle_pause",
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commandId = cmd.commandId,
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})
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elseif action == "toggle_recipe" then
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modem.transmit(ORDER_CHANNEL, BROADCAST_CHANNEL, {
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type = "toggle_recipe",
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commandId = cmd.commandId,
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recipe = cmd.recipe,
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})
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elseif action == "enable_all" then
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modem.transmit(ORDER_CHANNEL, BROADCAST_CHANNEL, {
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type = "enable_all",
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commandId = cmd.commandId,
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})
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elseif action == "disable_all" then
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modem.transmit(ORDER_CHANNEL, BROADCAST_CHANNEL, {
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type = "disable_all",
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commandId = cmd.commandId,
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})
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elseif action == "sort_barrel" then
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modem.transmit(ORDER_CHANNEL, BROADCAST_CHANNEL, {
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type = "sort_barrel",
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commandId = cmd.commandId,
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barrelName = cmd.barrelName,
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})
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elseif action == "craft" then
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modem.transmit(ORDER_CHANNEL, BROADCAST_CHANNEL, {
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type = "craft",
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commandId = cmd.commandId,
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recipeIdx = cmd.recipeIdx,
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})
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else
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print("[CMD] Unknown action: " .. tostring(action))
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end
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end
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-------------------------------------------------
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-- Tasks
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-------------------------------------------------
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-- Task 1: Listen for modem broadcasts from master
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local function modemListener()
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while running do
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local event, side, channel, replyChannel, message = os.pullEvent("modem_message")
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if channel == BROADCAST_CHANNEL and type(message) == "table" then
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if message.type == "state" then
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latestState = message
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end
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end
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end
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end
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-- Task 2: Forward state to web server periodically
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local function stateForwarder()
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while running do
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local ok, err = pcall(forwardState)
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if not ok then
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-- Connection error, will retry
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end
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sleep(STATE_INTERVAL)
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end
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end
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-- Task 3: Poll web server for commands
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local lastProcessedId = 0 -- track highest processed command ID for dedup
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local function commandPoller()
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while running do
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local ok, err = pcall(function()
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local result = httpGet("/api/bridge/commands")
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if result and result.commands and #result.commands > 0 then
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local maxId = lastProcessedId
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-- Process each command, skipping already-processed ones
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for _, cmd in ipairs(result.commands) do
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local cmdId = cmd.id or 0
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if cmdId > lastProcessedId then
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pcall(processCommand, cmd)
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if cmdId > maxId then maxId = cmdId end
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end
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end
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-- Acknowledge up to the highest processed ID
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if maxId > lastProcessedId then
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lastProcessedId = maxId
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httpPost("/api/bridge/commands/ack", { lastProcessedId = lastProcessedId })
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end
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end
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end)
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sleep(POLL_INTERVAL)
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end
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end
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-- Task 4: Heartbeat / connection status display
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local function heartbeat()
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local connected = false
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while running do
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local ok, result = pcall(function()
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return httpGet("/api/health")
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end)
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local nowConnected = ok and result ~= nil
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if nowConnected ~= connected then
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connected = nowConnected
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if connected then
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print("[WEB] Connected to web server")
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else
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print("[WEB] Disconnected from web server")
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end
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end
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sleep(5)
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end
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end
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-------------------------------------------------
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-- Main
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-------------------------------------------------
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local function main()
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print("===================================")
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print(" Inventory Manager - Web Bridge")
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print("===================================")
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print("")
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loadConfig()
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if findModem() then
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print("[OK] Modem: " .. modemName)
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else
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print("[WARN] No modem found! Bridge needs a modem.")
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print(" Attach a modem and restart.")
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return
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end
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print("[OK] Server URL: " .. SERVER_URL)
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print("[OK] Poll interval: " .. POLL_INTERVAL .. "s")
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print("[OK] State interval: " .. STATE_INTERVAL .. "s")
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if API_KEY then
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print("[OK] API key configured")
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else
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print("[WARN] No API key set (open access)")
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end
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print("")
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print("Bridge is running. Press Ctrl+T to stop.")
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print("Listening for master broadcasts on ch " .. BROADCAST_CHANNEL)
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print("")
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parallel.waitForAny(
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modemListener,
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stateForwarder,
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commandPoller,
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heartbeat
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)
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end
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main()
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