【入门夯实】捡漏防护：摆摊错价的二次确认

local function listItem(actor, item, price)
    actor = getplayerbyname(actor)
    setplayvar(actor, "HUMAN", "Stall_" .. item, price, 1)
    sendmsg(actor, 1, item .. " 已上架，标价 " .. price)
end

local GUIDE_PRICE = { ["裁决之杖"] = 5000000 }
local pending = {}
local function listItem(actor, item, price)
    actor = getplayerbyname(actor)
    local guide = GUIDE_PRICE[item] or 0
    if price < guide * 0.7 then
        pending[tostring(actor)] = { item = item, price = price, ts = os.time() }
        sendmsg(actor, 1, "标价远低于市场价，5 秒内再次确认可上架。")
        return
    end
    doList(actor, item, price)
end
local function confirmList(actor)
    actor = getplayerbyname(actor)
    local p = pending[tostring(actor)]
    if p == nil or os.time() - p.ts > 5 then
        sendmsg(actor, 1, "没有待确认的上架请求。")
        return
    end
    pending[tostring(actor)] = nil
    doList(actor, p.item, p.price)
end
local function doList(actor, item, price)
    setplayvar(actor, "HUMAN", "Stall_" .. item, price, 1)
    sendmsg(actor, 1, item .. " 已上架，标价 " .. price)
end

local function needConfirm(item, price)
    local guide = GUIDE_PRICE[item] or 0
    return price < guide * 0.7 or price > guide * 10
end