Edit Snavy box script.

[OTcreator]

Hello!
I need to edit this script but I have huge problems with it.

1.) rewards[REWARD_TYPE.ITEM] = {2160, 1}
Here the crate gives only one reward.
I would like it to randomly depending on the chance there are five here for example.
2160, 1 - 5% chance
2160,5 - 20% chance
2160,20 - 50% chance, etc.

2.) In addition, add bost per hour: speed, critical hit.

local function getTableLength(t)
    local count = 0
    for k, v in pairs(t) do count = count + 1 end
    return count
end

local function secondsToReadable(s)
    local hours   = math.floor(s / 3600)
    local minutes = math.floor(math.fmod(s, 3600)/60)
    local seconds = math.floor(math.fmod(s, 60))
    return (hours   > 0 and (hours   .. ' hours ')   or '') ..
           (minutes > 0 and (minutes .. ' minutes ') or '') ..
           (seconds > 0 and (seconds .. ' seconds ') or '')
end

local config = {

    HP_BOOST_TIME    = 3600, -- seconds
    HP_BOOST_PERCENT = 15, -- +15%
    HP_BOOST_STORAGE = 45392,

    MP_BOOST_TIME    = 3600, -- seconds
    MP_BOOST_PERCENT = 15, -- +15%
    MP_BOOST_STORAGE = 45393,

    EXTRA_EXP_RATE    = 1.05, -- +5%
    EXTRA_EXP_STORAGE = 45394,
    EXTRA_EXP_TIME    = 1800,

    STORAGE_LAST_USED = 45395,
    REWARD_TIME = 24 * 3600
}

local REWARD_TYPE = {
    ITEM         = 1,
    ITEM_TWO   = 2,
    EXTRA_HP     = 3,
    EXTRA_MP     = 4,
    EXP_RATE     = 5
}

local rewards = {}
rewards[REWARD_TYPE.ITEM] = {2160, 1}
rewards[REWARD_TYPE.ITEM_TWO] = {2268, 10}
rewards[REWARD_TYPE.EXTRA_HP] = Condition(CONDITION_ATTRIBUTES)
rewards[REWARD_TYPE.EXTRA_HP]:setParameter(CONDITION_PARAM_SUBID, 1234)
rewards[REWARD_TYPE.EXTRA_HP]:setParameter(CONDITION_PARAM_STAT_MAXHITPOINTSPERCENT, 100 + config.HP_BOOST_PERCENT)
rewards[REWARD_TYPE.EXTRA_HP]:setParameter(CONDITION_PARAM_TICKS, config.HP_BOOST_TIME * 1000)

rewards[REWARD_TYPE.EXTRA_MP] = Condition(CONDITION_ATTRIBUTES)
rewards[REWARD_TYPE.EXTRA_HP]:setParameter(CONDITION_PARAM_SUBID, 1235)
rewards[REWARD_TYPE.EXTRA_MP]:setParameter(CONDITION_PARAM_STAT_MAXMANAPOINTSPERCENT, 100 + config.MP_BOOST_PERCENT)
rewards[REWARD_TYPE.EXTRA_MP]:setParameter(CONDITION_PARAM_TICKS, config.MP_BOOST_TIME * 1000)

rewards[REWARD_TYPE.EXP_RATE] = config.EXTRA_EXP_RATE

local ac = Action()
function ac.onUse(player, item, fromPosition, itemEx, toPosition)
    if player:getLevel() < 20 then
        player:sendTextMessage(MESSAGE_STATUS_SMALL, 'You must be level 20 in order to use this chest.')
        player:getPosition():sendMagicEffect(CONST_ME_POFF)
        return true
    end

    local cur_time, cur_storage = os.time(), player:getStorageValue(45395)
    if player:getStorageValue(config.STORAGE_LAST_USED) > os.time() then
        player:sendTextMessage(MESSAGE_EVENT_ADVANCE, 'Today you have already collected the reward.\nYou can obtain this reward again in ' .. os.date('!%Hh %Mm %Ss', cur_storage - cur_time) .. '.')
        player:getPosition():sendMagicEffect(CONST_ME_POFF)
        return true
    end

    local rewardType = math.random(1, getTableLength(REWARD_TYPE))
    if not rewards[rewardType] then
        player:getPosition():sendMagicEffect(CONST_ME_POFF)
        player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, 'An error has occured. Contact admin.')
        print('[Warning - DailyRewardChest] Unknown reward. Type ('.. rewardType ..')')
        return true
    end

    player:setStorageValue(config.STORAGE_LAST_USED, os.time() + config.REWARD_TIME)
    player:getPosition():sendMagicEffect(CONST_ME_MAGIC_BLUE)

    if rewardType == REWARD_TYPE.EXP_RATE then
        player:setStorageValue(config.EXTRA_EXP_STORAGE, os.time() + config.EXTRA_EXP_TIME)
        player:sendTextMessage(MESSAGE_EVENT_ADVANCE,
            'You have received extra exp rate of +'
                .. (config.EXTRA_EXP_RATE * 100) - 100
                .. '% for '
                .. secondsToReadable(config.EXTRA_EXP_TIME)..'.'
            )
        return true
    end

    if rewardType == REWARD_TYPE.ITEM then
        local item = rewards[rewardType]
        player:addItem(item[1], item[2])
        player:sendTextMessage(MESSAGE_EVENT_ADVANCE, 'You have found a crystal coin.')
        return true
    end
    
    if rewardType == REWARD_TYPE.ITEM_TWO then
        local item = rewards[rewardType]
        player:addItem(item[1], item[2])
        player:sendTextMessage(MESSAGE_EVENT_ADVANCE, 'You have found a sudden death rune.')
        return true
    end

    if rewardType == REWARD_TYPE.EXTRA_HP then
        player:addCondition(rewards[rewardType])
        player:sendTextMessage(
            MESSAGE_EVENT_ADVANCE,
            'You have received +'.. config.HP_BOOST_PERCENT ..'% health boost for '
            .. secondsToReadable(config.HP_BOOST_TIME) ..'.'
        )
        return true
    end

    if rewardType == REWARD_TYPE.EXTRA_MP then
        player:addCondition(rewards[rewardType])
        player:sendTextMessage(
            MESSAGE_EVENT_ADVANCE,
            'You have received +'.. config.MP_BOOST_PERCENT ..'% mana boost for '
            .. secondsToReadable(config.MP_BOOST_TIME)..'.'
        )
    end
    return true
end
ac:uid(26083)
ac:register()


local ec = EventCallback
ec.onGainExperience = function(self, source, exp, rawExp)
    if not source or source:isPlayer() then
        return exp
    end

    if self:getStorageValue(config.EXTRA_EXP_STORAGE) < os.time() then
        return exp
    end

    exp = exp * config.EXTRA_EXP_RATE
    return exp
end
ec:register(true)