-- 华丽皮肤礼包：仅直购，配置读取 excel.skin.skinGift

local Msg = require("core.Msg")
local Grid = require("bag.Grid")
local BagLogic = require("bag.BagLogic")
local BuyLogic = require("topup.BuyLogic")
local Lang = require("common.Lang")
local Broadcast = require("broadcast.Broadcast")

local SkinGiftExcel = require("excel.skin").skinGift

local LOGTAG = "skinGift"
local GIFT_CFG_ID = 1

local function getCfg()
    return SkinGiftExcel[GIFT_CFG_ID]
end

local function getCfgByBuyId(buyId)
    local cfg = getCfg()
    if cfg and cfg.buyID == buyId then
        return cfg
    end
end

local function getBuyCnt(human, buyId)
    local skinGiftData = human.db.skinGiftData
    return skinGiftData and skinGiftData[buyId] or 0
end

function Query(human)
    local cfg = getCfg()
    if not cfg then
        return
    end

    local msgRet = Msg.gc.GC_SKIN_GIFT_QUERY
    BuyLogic.fontBuyItem(human, msgRet.buyItem, cfg.buyID)

    msgRet.giftItem[0] = #cfg.rewards
    for i, item in ipairs(cfg.rewards) do
        Grid.makeItem(msgRet.giftItem[i], item[1], item[2])
    end

    Msg.send(msgRet, human.fd)
end

function onCharge(human, buyId, buyNum)
    local cfg = getCfgByBuyId(buyId)
    if not cfg then
        return
    end

    buyNum = buyNum or 1
    local nowBuyCnt = getBuyCnt(human, buyId)
    if cfg.amount > 0 and buyNum + nowBuyCnt > cfg.amount then
        return Broadcast.sendErr(human, Lang.ABS_GIFT_BUY_LIMIT)
    end

    local itemArr = {}
    for i, item in ipairs(cfg.rewards) do
        itemArr[i] = {item[1], item[2] * buyNum}
    end

    BagLogic.addItemList(human, itemArr, LOGTAG)

    local skinGiftData = human.db.skinGiftData or {}
    skinGiftData[buyId] = nowBuyCnt + buyNum
    human.db.skinGiftData = skinGiftData

    Query(human)
end

function GetRemainNum(human, buyId)
    local cfg = getCfgByBuyId(buyId)
    if not cfg then
        return 0
    end

    if cfg.amount == 0 then
        return 0
    end

    local nowBuyCnt = getBuyCnt(human, buyId)
    if cfg.amount > nowBuyCnt then
        return cfg.amount - nowBuyCnt
    end

    return 0
end