【进阶实战】修理保险：装备预存保费的免单修理封装

local function buyInsurance(actor)
    actor = getplayerbyname(actor)
    if not takeitem(actor, "金条", 5) then
        sendmsg(actor, 1, "保险费需要 5 根金条（30 天保障）。")
        return
    end
    setplayvar(actor, "HUMAN", "InsEnd", os.time() + 30 * 86400, 1)
    setplayvar(actor, "HUMAN", "InsCnt", 30, 1)
    sendmsg(actor, 1, "修理保险生效：30 天内免单修理 30 次。")
end
local function repairFree(actor)
    actor = getplayerbyname(actor)
    local endAt = tonumber(getplayvar(actor, "HUMAN", "InsEnd")) or 0
    local cnt = tonumber(getplayvar(actor, "HUMAN", "InsCnt")) or 0
    if os.time() > endAt or cnt <= 0 then
        takeitem(actor, "金条", 2)
        sendmsg(actor, 1, "保险失效，本次修理收取 2 万金币。")
        return
    end
    setplayvar(actor, "HUMAN", "InsCnt", cnt - 1, 1)
    sendmsg(actor, 1, "保险免单，剩余免费次数 " .. (cnt - 1) .. "。")
end

local function insuranceLeft(actor)
    actor = getplayerbyname(actor)
    local endAt = tonumber(getplayvar(actor, "HUMAN", "InsEnd")) or 0
    local days = math.max(0, math.ceil((endAt - os.time()) / 86400))
    local cnt = tonumber(getplayvar(actor, "HUMAN", "InsCnt")) or 0
    sendmsg(actor, 1, "保险剩余 " .. days .. " 天 / " .. cnt .. " 次免单。")
end