local UIFriendMail = UIViewClass()

--常量
local AtlasCommon = "UI_Common"
local MailBGOfficial = "yj_icon_gf"
local MailBGUnion = "yj_icon_sl"
local MailBGCountry = "yj_icon_gj"
local MailBGRead = "Mail_Bg_Read"
local MailBGUnRead = "Mail_Bg_UnRead"
local MailIconRead = "Mail_Icon_Read"
local MailIconUnRead = "Mail_Icon_UnRead"
local ConstContentHeightWithReward = 400
local ConstContentHeightWithoutReward = 574

local COUNT_IN_RANGE = 6
local OFFSET_IN_END = 4

UIFriendMail.mailCellList = {}
UIFriendMail.rewardCellList = {}

-- **************** 通用部分 ******************* --
function UIFriendMail:OnCreated()
    self.tempContext = {}
    self.tempContext.scroll = self.scroll_Reward
end

function UIFriendMail:OnOpened(context)
    self:RegistSystemEvent(EventID.UI_Mail_SetCellData, self.SetCellData)
    self:RegistSystemEvent(EventID.UI_Mail_RefreshMail, self.RefreshMail)

    self.index = context.MailIndex
    self:RefreshMail(true)
end

function UIFriendMail:OnClosed()
    CTL.Mail.OnMailPanelClosed()
    self.rewardCellList = {}
    self.mailCellList = {}
end

-- **************** 点击事件 ******************* --
function UIFriendMail:OnClickReceive()
    CTL.Mail.ReceiveMail()
end

function UIFriendMail:OnClickReceiveAll()
    CTL.Mail.ReceiveAllMail()
end

function UIFriendMail:OnClickDelete()
    self.isDeleteMail = true
    CTL.Mail.DeleteMail()
end

function UIFriendMail:OnClickDeleteAll()
    self.isDeleteMail = true
    CTL.Mail.DeleteAllMail()
end

function UIFriendMail:OnClickClose()
    self:CloseView()
end

-- **************** 界面刷新 ******************* --
function UIFriendMail:RefreshMail(refill)
    self:RefreshMailList(refill)
    self:RefreshMailDetail()
    self.isDeleteMail = false
end

function UIFriendMail:RefreshMailList(refill)
    local mailCount = MDL.Mail.GetMailClientCount()
    UIUtils.SetLabel(self.labLocal_MailNum, mailCount .. "/" .. MDL.Mail.GetTotalCount())
    UIUtils.SetActive(self.group_Empty_NoMail, mailCount == 0)
    if refill then
        for i = 1, mailCount do
            self.loopScroll_Panel:AddData(i, 0)
        end
        if mailCount > 0 then
            self.loopScroll_Panel:SelectIndex(self.index or 0, true)
        end
    else
        local arrayData = {}
        for i = 1, mailCount do
            table.insert(arrayData, i)
        end
        self.loopScroll_Panel:ReloadAll(arrayData)
        if self.isDeleteMail then
            --删除之后，选中上一个相同的位置
            local lastSelectCount = self.context.MailIndex + 1
            if mailCount >= lastSelectCount then
                self.loopScroll_Panel:SelectIndex(self.context.MailIndex)
            else
                self.loopScroll_Panel:SelectIndex(mailCount - 1)
            end
            if mailCount < COUNT_IN_RANGE then
                --邮件数量小于范围内cell数目时，置顶
                self.loopScroll_Panel:MoveBegin()
            else
                --选中在上中部分，会一直在视野内，可以不处理
                --选中在下部分，由于选中项一直向上移动，位置需要同步向下移
                --通过距离终点的offset个定义为下部分
                if mailCount - lastSelectCount < OFFSET_IN_END then
                    --由于底部可能会留出部分空间，需要修改下content坐标
                    local oriX, oriY = self.loopScroll_Panel.content:GetAnchoredPosition()
                    self.loopScroll_Panel.content:SetAnchoredPosition(oriX, oriY - 100)
                    self.loopScroll_Panel:MoveEnd()
                end
            end
        else
            local index = math.min(self.context.MailIndex, self.loopScroll_Panel.Count - 1)
            if index >= 0 then
                self.loopScroll_Panel:SelectIndex(index, true)
            end
        end
    end
end

function UIFriendMail:SaveSelectedMailIndex(index)
    self.context.MailIndex = index
end

function UIFriendMail:OnCellSelect(scrollRect, index, cellTable, data)
    if scrollRect == self.loopScroll_Panel then
        local _currentIndex = data + MDL.Mail.GetMailOffset()
        CTL.Mail.ShowMail(_currentIndex)
        local mail = MDL.Mail.GetMail(_currentIndex)
        self.curShowMailId = mail.UID
        self:RefreshMailDetail()
        self:SaveSelectedMailIndex(index)
    end
end

function UIFriendMail:OnCellInit(scrollRect, index, cellTable, data)
    if scrollRect == self.loopScroll_Panel then
        self:SetCellData(data, cellTable, index)
    elseif scrollRect == self.scroll_Reward then
        UTL.Item.SetItemCell(cellTable.item, data.item.itemId, data.item.itemCount)
        if data.received then
            UIUtils.SetActive(cellTable.item.obj_Stamp, true)
        else
            UIUtils.SetActive(cellTable.item.obj_Stamp, false)
        end
    end
end

function UIFriendMail:OnCellClicked(scrollRect, index, cellTable, target, data)
    if scrollRect == self.scroll_Reward then
        UTL.ItemTips.ShowCommonTipsById(data.item.itemId)
    end
end

function UIFriendMail:RefreshMailDetail()
    if MDL.Mail.GetMailClientCount() == 0 then
        UIUtils.SetActive(self.obj_NoMail.gameObject, true)
        UIUtils.SetActive(self.obj_WithMail.gameObject, false) 
    else
        UIUtils.SetActive(self.obj_NoMail.gameObject, false)
        UIUtils.SetActive(self.obj_WithMail.gameObject, true)
        local index = CTL.Mail.GetCurrentIndex()
        if index == 0 then
            index = 1
        end
        local mail = MDL.Mail.GetMail(index)
        MDL.Mail.SelectMailTime = mail.SendTime
        UIUtils.SetLabel(self.labLocal_Title, mail.Title)
        UIUtils.SetLabel(self.labLocal_Content, mail.Content)
        local leftTime = UTL.Time.GetLeftTime_SimpleFormat(mail.ExpireTime, true)
        if not leftTime then
            UIUtils.SetActive(self.labLocal_LeftTime.gameObject, false)
        else
            UIUtils.SetActive(self.labLocal_LeftTime.gameObject, true)
            local text = UTL.Time.CheckLeftTimeLessOneMinute(mail.ExpireTime) and UIUtils.GetLocalizedTxt(Const_IDS.IDS_Mail_InsufficientTime) or leftTime
            UIUtils.SetLabel(self.labLocal_LeftTime, text)
        end
        if CTL.Mail.CheckHasReward(mail) then
            --有奖励的情况
            UIUtils.ChangeHeight(self.scroll_Content.gameObject, ConstContentHeightWithReward)
            UIUtils.SetActive(self.obj_Reward.gameObject, true)
            UIUtils.SetActive(self.event_Receive.gameObject, not mail.IsReceived)
            self:RefreshMailReward(mail.ItemList, mail.IsReceived)
        else
            --没有奖励的情况
            UIUtils.ChangeHeight(self.scroll_Content.gameObject, ConstContentHeightWithoutReward)
            UIUtils.SetActive(self.obj_Reward.gameObject, false)
        end
        self.labLocal_Content.transform:SetAnchoredPosition(0, 0)
    end
end

function UIFriendMail:RefreshMailReward(itemList, received)
    self.scroll_Reward:ClearCells()
    for i, v in ipairs(itemList) do
        local tempContext = {}
        tempContext.item = v
        tempContext.received = received
        self.scroll_Reward:AddData(tempContext, 0)
    end
    if #self.rewardCellList > #itemList then
        for i = #itemList + 1, #self.rewardCellList do
            self.rewardCellList[i]:OnClosed()
        end
    end
    --UIUtils.ResetScrollRect(self.scroll_Reward)
end

-- **************** 邮件单元 ******************* --
function UIFriendMail:SetCellData(index, cellTable, cellIndex)
    index = MDL.Mail.GetMailOffset() + index
    local mail = MDL.Mail.GetMail(index)
    if not mail then
        logging.error(LTAG.ERROR, "No Mail With Index:", index)
        return
    end
    local mailCell = cellTable
    UIUtils.SetLabel(mailCell.img_UnSelect.labLocal_Title, mail.Title)
    UIUtils.SetLabel(mailCell.img_Select.labLocal_Title, mail.Title)
    local leftTime = UTL.Time.GetLeftTime_SimpleFormat(mail.ExpireTime, false)
    if not leftTime then
        UIUtils.SetActive(mailCell.img_UnSelect.labLocal_LeftTime.gameObject, false)
        UIUtils.SetActive(mailCell.img_Select.labLocal_LeftTime.gameObject, false)
    else
        UIUtils.SetActive(mailCell.img_UnSelect.labLocal_LeftTime.gameObject, true)
        UIUtils.SetActive(mailCell.img_Select.labLocal_LeftTime.gameObject, true)
        local text = UTL.Time.CheckLeftTimeLessOneMinute(mail.ExpireTime) and UIUtils.GetLocalizedTxt(Const_IDS.IDS_Mail_InsufficientTime) or leftTime
        UIUtils.SetLabel(mailCell.img_UnSelect.labLocal_LeftTime, text)
        UIUtils.SetLabel(mailCell.img_Select.labLocal_LeftTime, text)
    end
    if mail.IsOpened then
        mailCell.obj_RedPoint.gameObject:SetActive(false)
        mailCell.read_State:SetState(0)
    else
        mailCell.obj_RedPoint.gameObject:SetActive(true)
        mailCell.read_State:SetState(1)
    end

    if mail.Type == MDL.Mail.Enum_MailType.Official then
        UTL.Item.SetAtlasSprite(mailCell.sprite_MailType, AtlasCommon, MailBGOfficial)
    elseif mail.Type == MDL.Mail.Enum_MailType.Union then
        UTL.Item.SetAtlasSprite(mailCell.sprite_MailType, AtlasCommon, MailBGUnion)
    elseif mail.Type == MDL.Mail.Enum_MailType.Country then
        UTL.Item.SetAtlasSprite(mailCell.sprite_MailType, AtlasCommon, MailBGCountry)
    end
    if mail.ItemList and #mail.ItemList > 0 then
        if mail.IsReceived then
            mailCell.received_State:SetState(0)
        else
            mailCell.received_State:SetState(1)
        end
    else
        mailCell.received_State:SetState(2)
    end

    if self.curShowMailId == mail.UID then
        self.loopScroll_Panel:SelectIndex(cellIndex)
    end
end

function UIFriendMail:OnButtonClicked(obj)
    if (obj == self.event_Receive) then
        self:OnClickReceive()
    elseif (obj == self.event_Delete) then
        self:OnClickDelete()
    elseif (obj == self.event_ReceiveAll) then
        self:OnClickReceiveAll()
    elseif (obj == self.event_DeleteAll) then
        self:OnClickDeleteAll()
    elseif obj == self.btn_Close then
        self:OnClickClose()
    end
end

return UIFriendMail