local PagePoster = {}

local function PageChange(nCurrentPageIndex)
    local rootPanel         = PagePoster.rootPanel

    local tagItem           = rootPanel.transform:GetChild(nCurrentPageIndex - 1).gameObject
    local toggleGroupCom    = tagItem.transform:GetComponent("Toggle")
    toggleGroupCom.isOn     = true
end

local function RefreshPagePosterToggleItem()
    local rootPanel          = PagePoster.rootPanel
    local tagItem            = rootPanel.transform:Find("Toggle").gameObject
    local toggleGroupCom     = tagItem.transform:GetComponent("Toggle")

    local tPageInfo          = GetCache("PAGE_INFO")
    local nImgListCount      = #tPageInfo.tImgPath
    for i = 1, nImgListCount - 1, 1 do
        CS.UnityEngine.GameObject.Instantiate(tagItem, rootPanel.transform)
    end

    toggleGroupCom.isOn = true
end

local function InitPagePosterUI()
    local rootPanel          = PagePoster.rootPanel
    local tagItem            = rootPanel.transform:Find("Toggle").gameObject
    local toggleGroupCom     = rootPanel.transform:GetComponent("ToggleGroup")
    local tagItemToggleCom   = tagItem.transform:GetComponent("Toggle")

    local tPagePosterTagInfo = GetCache("PAGE_POSTER_TAG_INFO")

    local texture2DTarget    = LoadResource(tPagePosterTagInfo.szTarget)
    local texture2DNoramal   = LoadResource(tPagePosterTagInfo.szNoramal)
    local targetSprite       = CS.UnityEngine.Sprite.Create(texture2DTarget, CS.UnityEngine.Rect(0,0,texture2DTarget.width, texture2DTarget.height), CS.UnityEngine.Vector2.zero)
    local normalSprite       = CS.UnityEngine.Sprite.Create(texture2DNoramal, CS.UnityEngine.Rect(0,0,texture2DNoramal.width, texture2DNoramal.height), CS.UnityEngine.Vector2.zero)

    tagItemToggleCom.group                = toggleGroupCom
    tagItemToggleCom.interactable         = false
    tagItemToggleCom.graphic.sprite       = targetSprite
    tagItemToggleCom.targetGraphic.sprite = normalSprite
end

local function RefreshUI()
    InitPagePosterUI()
    RefreshPagePosterToggleItem()
end

local function RegisterEvent()
    local eventManager = require('Base/ZEventDispatchCenter.lua')

    eventManager:RegisterEvent(eventManager.EventType.COMMON_UI_PAGE_CHANGE, PageChange)
end

local function UnregisterEvent()
    local eventManager = require('Base/ZEventDispatchCenter.lua')

    eventManager:UnregisterEvent(eventManager.EventType.COMMON_UI_PAGE_CHANGE, PageChange)
end

function PagePoster.Awake(luaRoot)
    PagePoster.luaRoot = luaRoot

    local canvas = CS.UnityEngine.GameObject.Find('Canvas')
    PagePoster._rootCanvas = canvas

    PagePoster.rootPanel = luaRoot
end

function PagePoster.Init()
    RefreshUI()
    RegisterEvent()
end

function PagePoster.UnInit()
    UnregisterEvent()
end

return PagePoster