local propertyTable = {
    ID = 1,Title = 2,Level = 3,Reward = 4,Preview = 5,
}

local mainPropertyTable = { 
    ID = 1,PageIndex = 2,LineIndex = 3,
}

local primaryTable = {
    "ID",
}


local DataPageEntry = {}
local rawget = rawget

local base = {
    __index = function(t, k)
        local propertyIndex = propertyTable[k]
		if propertyIndex then
            local mainPropertyIndex = mainPropertyTable[k]
            if mainPropertyIndex then
                return t[mainPropertyIndex]
            end

            local pageIndex = t[2]
            local pageData = DataPageEntry[pageIndex]
            if pageData == nil then
                pageData = require('Data/LevelUpGift-page'..pageIndex)
                if DataSheetUtil then
                    --skip fixedpoint process for data sheet checker
                    DataSheetUtil.ProcessFixedPoint('LevelUpGift', pageData)
                end
                DataPageEntry[pageIndex] = pageData
            end

            local lineIndex = t[3]
            local resultData = pageData[lineIndex]
			return resultData[propertyIndex]
		end
	end,

	__newindex = function()
		error('Attempt to modify read-only table')
	end
}

local dataTable = {
	setmetatable({1,1,1},base),
	setmetatable({2,1,2},base),
	setmetatable({3,1,3},base),
	setmetatable({4,1,4},base),
	setmetatable({5,1,5},base),
	setmetatable({6,1,6},base),
	setmetatable({7,1,7},base),
	setmetatable({8,1,8},base),
	setmetatable({9,1,9},base),
	setmetatable({10,1,10},base),
	setmetatable({11,1,11},base),
	setmetatable({12,1,12},base),
	setmetatable({13,1,13},base),
	setmetatable({14,1,14},base),
	setmetatable({15,1,15},base),
	setmetatable({16,1,16},base),
	setmetatable({17,1,17},base),
	setmetatable({18,1,18},base),
	setmetatable({19,1,19},base),
	setmetatable({20,1,20},base),
	setmetatable({21,1,21},base),
	setmetatable({22,1,22},base),
	setmetatable({23,1,23},base),
	setmetatable({24,1,24},base),
	setmetatable({25,1,25},base),
	setmetatable({26,1,26},base),
	setmetatable({27,1,27},base),
	setmetatable({28,1,28},base),
	setmetatable({29,1,29},base),
	setmetatable({30,1,30},base),
	setmetatable({31,1,31},base),
	setmetatable({32,1,32},base),
	setmetatable({33,1,33},base),
	setmetatable({34,1,34},base),
	setmetatable({35,1,35},base),
	setmetatable({36,1,36},base),
	setmetatable({37,1,37},base),
	setmetatable({38,1,38},base),
	setmetatable({39,1,39},base),
	setmetatable({40,1,40},base),
	setmetatable({41,1,41},base),
	setmetatable({42,1,42},base),
	setmetatable({43,1,43},base),
	setmetatable({44,1,44},base),
	setmetatable({45,1,45},base),
	setmetatable({46,1,46},base),
	setmetatable({47,1,47},base),
	setmetatable({48,1,48},base),
	setmetatable({49,1,49},base),
	setmetatable({50,1,50},base),
	setmetatable({51,1,51},base),
}

return {
    dataTable = dataTable,
    propertyTable = propertyTable,
    primaryTable = primaryTable,
}