local BagGridWidget = {}
local UIUtils = require("UI.Utils")
local GamePlayUtils = require("GamePlay.Utils")
local RoleUtils = require("GamePlay.Utils.RoleUtils")
local BuildUtils = require("GamePlay.Utils.BuildUtils")
local ESlateVisibility = import("ESlateVisibility")
local BlueprintGameplayTagLibrary = import("BlueprintGameplayTagLibrary")




local function SetIsSelected(check_box, is_selected)
    if is_selected == nil then
        check_box:SetVisibility(ESlateVisibility.Collapsed)
    else
        check_box:SetVisibility(ESlateVisibility.Visible)
        check_box:SetIsChecked(is_selected)
    end
end

local function SetItemAndCnt(entry, item_id, item_cnt)
    if item_id ~= nil then
        entry.Icon:SetVisibility(ESlateVisibility.SelfHitTestInvisible)
        local config = GamePlayUtils.GetItemDescConfig(item_id)
        local x = slua.loadObject(config.IconResource:ToString())
        entry.Icon:SetBrushResourceObject(x)
    else
        entry.Icon:SetVisibility(ESlateVisibility.Collapsed)
    end
    item_cnt = item_cnt or 0
    if item_cnt > 0 then
        entry.Icon:SetVisibility(ESlateVisibility.SelfHitTestInvisible)
        if item_cnt > 1 then
            entry.TxtCnt:SetVisibility(ESlateVisibility.SelfHitTestInvisible)
        else
            entry.TxtCnt:SetVisibility(ESlateVisibility.Collapsed)
        end
    else
        entry.TxtCnt:SetVisibility(ESlateVisibility.Collapsed)
        entry.Icon:SetVisibility(ESlateVisibility.Collapsed)
    end
    entry.item_id = item_id
end

local function GetItemMenuContent(item, item_id)
    local config = GamePlayUtils.GetItemConfigByID(item_id)
    if config == nil then return {} end

    local contents = {}

    local consume_function = function()
        local inventory = item.inventory
        inventory:ConsumeItems(item.index, 1)
        local grid = inventory:GetGridWithIndex(item.index)
        item:SetData(grid)
    end
    local is_food = BlueprintGameplayTagLibrary.HasTag(
        config.TypeTagContainer,
        GamePlayUtils.GetGameplayTag("GameItem.Food"),
        false
    )
    local is_building = BlueprintGameplayTagLibrary.HasTag(
        config.TypeTagContainer,
        GamePlayUtils.GetGameplayTag("GameItem.Building"),
        false
    )
    if is_food then
        table.insert(contents, {"使用", function()
            consume_function()
            RoleUtils.EatFood(item, item_id)
        end})
    end
    if is_building then
        table.insert(contents, {"建造", function()
            if BuildUtils.Build(item, item_id) == true then
                consume_function()
            end
            -- RoleUtils.EatFood(item, item_id)
        end})
    end
    table.insert(contents, {"丢弃", function()
         consume_function()
    end})
    return contents
end


function BagGridWidget:OnInitialized()
    self.BtnMain.OnClicked:Add(function() self:OnGridClicked() end)

    self.CheckBox.OnCheckStateChanged:Add(function(is_selected)
        if self.item == nil then return end
        self.item.selected = is_selected
    end)
end

function BagGridWidget:SetData(grid)
    if grid == nil then grid = {} end
    SetIsSelected(self.CheckBox, grid.selected)
    SetItemAndCnt(self, grid.ItemID, grid.CurrentCount)
end

function BagGridWidget:SetInventoryInfo(inventory, index)
    self.index = index
    self.inventory = inventory
end

function BagGridWidget:OnDestroy()

end

function BagGridWidget:OnGridClicked()
    if not self.item_id then return end
    local FVector2D = import("Vector2D")
    local SlateBlueprintLibrary = import("SlateBlueprintLibrary")

    local geometry = self:GetCachedGeometry()
    local size = SlateBlueprintLibrary.GetLocalSize(geometry)
    local center = FVector2D()
    center.X, center.Y = size.X * 0.5, size.Y * 0.5
    local _, viewport_pos = SlateBlueprintLibrary.LocalToViewport(self, geometry, center, nil, nil)

    UIUtils.ShowWidget(self, "MenuPanel", {
        viewport_pos,
        GetItemMenuContent(self, self.item_id)
    })

end

return Class(nil, nil, BagGridWidget)