【进阶实战】新人欢迎语：入会自动欢迎的防刷封装

local TPL = {
    "欢迎 {name} 加入 {guild}，家人们冲！",
    "{name} 入会，福利群见行会公告！",
    "新面孔 {name}，晚上 8 点祖玛走起！",
}
local function welcome(actor, guildName)
    actor = getplayerbyname(actor)
    local tpl = TPL[math.random(1, #TPL)]
    local line = string.gsub(tpl, "{name}", tostring(actor))
    line = string.gsub(line, "{guild}", guildName)
    sendmsg(nil, 3, line)
end

local pending, deadline = {}, 0
local function enqueueWelcome(actor, guildName)
    actor = getplayerbyname(actor)
    pending[#pending + 1] = tostring(actor)
    deadline = os.time() + 10
end
local function flushWelcome(guildName)
    if #pending == 0 then
        return
    end
    sendmsg(nil, 1, "欢迎 " .. table.concat(pending, "、") ..
        " 加入 " .. guildName .. "！")
    pending = {}
end