【后端接口】好友赠送：赠送道具的接口与防刷校验

local DAY_LIMIT = 3
local VALUE_CAP = 10000
function giftTo(actor, friendName, itemName)
    local key = "GIFT_" .. os.date("%Y%m%d")
    local sent = tonumber(getplayvar(actor, "HUMAN", key) or "0")
    if sent >= DAY_LIMIT then
        sendmsg(actor, 0, "今日赠送次数已用完")
        return
    end
    local fp = getplayerbyname(friendName)
    if fp == nil or isplayer(fp) == false then
        sendmsg(actor, 0, "对方不在线，无法赠送")
        return
    end
    if not checkitemw(actor, itemName, 1) then
        sendmsg(actor, 0, "背包里没有这件物品")
        return
    end
    takeitem(actor, itemName, 1)
    giveitem(fp, itemName, 1)
    setplayvar(actor, "HUMAN", key, sent + 1, 1)
    sendmsg(actor, 0, "赠送成功")
    sendmsg(fp, 0, "好友 " .. class(actor):GetName() .. " 赠送了 " .. itemName)
end

local function touchDevice(actor, devKey)
    local key = "DEV_GIFT_" .. os.date("%Y%m%d") .. "_" .. devKey
    local n = tonumber(getsysvar(key) or "0") + 1
    setsysvarex(key, n, 1)
    if n > 50 then
        sendmail("#风控组", 941, "赠送异常告警", "设备 " .. devKey .. " 今日赠送 " .. n .. " 次", "")
    end
end