163 lines
4.2 KiB
Lua
163 lines
4.2 KiB
Lua
local Util = require('opus.util')
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local fs = _G.fs
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local os = _G.os
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local shell = _ENV.shell
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local programDir = fs.getDir(shell.getRunningProgram())
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os.loadAPI(programDir .. '/'.. 'json')
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local w = require("w")
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local r = require("r")
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local k = require("k")
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local jua = require("jua")
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local await = jua.await
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local device = _G.device
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local json = _G.json
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local rs = _G.rs
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local textutils = _G.textutils
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local chat = device['plethora:chat']
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rs.setOutput('top', false)
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r.init(jua)
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w.init(jua)
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k.init(jua, json, w, r)
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local function Syntax()
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error('Syntax: swshop [domain] [password | privateKey] [isPrivateKey]')
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end
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local args = { ... }
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local domain = args[1] or Syntax()
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local password = args[2] or Syntax()
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local privatekey = args[3] and args[2] or k.toKristWalletFormat(password)
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local address = k.makev2address(privatekey)
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local transactions = Util.readTable('/usr/swshop.log') or { }
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jua.on("terminate", function()
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rs.setOutput('top', false)
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jua.stop()
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_G.printError("Terminated")
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end)
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local function getItemDetails(item)
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local f = fs.open('usr/config/shop', "r")
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if f then
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local t = f.readAll()
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f.close()
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t = textutils.unserialize(t)
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for key, v in pairs(t) do
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if v.name == item then
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return key, v.price
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end
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end
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end
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end
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local function logTransaction(transaction, details)
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transaction = Util.shallowCopy(transaction)
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Util.merge(transaction, details)
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table.insert(transactions, transaction)
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Util.writeTable('/usr/swshop.log', transactions)
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end
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local function handleTransaction(transaction)
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local from = transaction.from
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local to = transaction.to
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local value = transaction.value
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if to ~= address or not transaction.metadata then return end
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local metadata = k.parseMeta(transaction.metadata)
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if not metadata.domain or metadata.domain ~= domain then return end
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local recipient = metadata.meta and (metadata.meta["return"] or from) or from
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print("Handling transaction from ", recipient)
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print('purchase: ' .. tostring(metadata.name))
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print('value: ' .. value)
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local t = {
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to = transaction.to,
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from = transaction.from,
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value = transaction.value,
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id = metadata.name,
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}
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local function refundTransaction(amount, reason)
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print("Refunding to ", recipient)
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await(k.makeTransaction, privatekey, recipient, amount, reason)
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logTransaction(t, { refund = amount, reason = reason })
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end
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t.itemId, t.price = getItemDetails(metadata.name)
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if not t.itemId or not t.price then
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print('invalid item')
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logTransaction(t, { reason = 'invalid item' })
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--return refundTransaction(value, "error=Item specified is not valid")
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return -- there could be multiple stores...
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end
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if value < t.price then
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print('value too low')
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return refundTransaction(value, "error=Please pay the price listed on-screen.")
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end
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local count = math.floor(value / t.price)
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local uid = math.random()
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print(string.format('requesting %d of %s', count, t.itemId))
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os.queueEvent('shop_provide', t.itemId, count, uid)
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local timerId = os.startTimer(60)
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while true do
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local e, p1, p2 = os.pullEvent()
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if e == 'timer' and p1 == timerId then
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print('timed out waiting for provide')
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refundTransaction(value, "error=Timed out attempting to provide items")
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break
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elseif e == 'shop_provided' and p1 == uid then
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local extra = value - (t.price * p2)
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logTransaction(t, { purchased = p2 })
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if chat and chat.tell then
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local msg = string.format('PURCHASE: %s bought %d %s for %s',
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recipient, p2, t.itemId, t.price * p2)
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pcall(chat.tell, msg)
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end
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if extra > 0 then
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print('extra: ' .. extra)
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refundTransaction(extra, "message=Here's your change!")
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end
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break
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end
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end
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end
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local function connect()
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print('opening store for: ' .. domain)
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local success, ws = await(k.connect, privatekey)
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assert(success, "Failed to get websocket URL")
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print("Connected to websocket.")
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rs.setOutput('top', true)
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success = await(ws.subscribe, "ownTransactions", function(data)
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local transaction = data.transaction
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handleTransaction(transaction)
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end)
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assert(success, "Failed to subscribe to event")
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end
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local s, m = pcall(function()
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jua.go(function()
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print("Ready")
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connect()
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end)
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end)
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rs.setOutput('top', false)
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if not s then
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error(m, 2)
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end
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