---@class CursorMgr
---@field LeftMouseDown function
---@field LeftMouseUp function
---@field LeftMouseHold function
---@field RightMouseDown function
---@field RightMouseUp function
---@field RightMouseHold function
---@field PointIn function
---@field PointExit function

CursorMgr = class()
local this = CursorMgr
this. mSetCursor = CS.TCFramework.CursorUtil
---this. sceneTouch = SceneTouch
this. PointIn = false
this. interval = 5
this. time = 0
this.CursorChanged = false
---@type Vector2
this.cursorOffset = nil

this.CursorIcon = {
    Normal = { atlas = "", src = "Cursor/Cursor_Normal.png" },
    Select = { atlas = "", src = "Cursor/Cursor_Select.png" },
    Catch = { atlas = "", src = "Cursor/Cursor_Catch.png" }
}
function this.SetCursor(tex, offset)
    this.mSetCursor.SetCursor(tex, offset)
end

function this.SetSprite(atlasName, iconName)
    ---@type UnityEngine.Texture2D
    local t = SL:LoadAsset(iconName, typeof(CS.UnityEngine.Texture2D)).res
    if not this.cursorOffset then
        this.cursorOffset = Vector2(t.width / 4, t.height / 4)
    end
    this.SetCursor(t, this.cursorOffset)
end

function this.OnGoing()
    this.time = this.time + 1
    if this.time < this.interval then
        return
    end
    this.PointIn = false
    this.time = 0
    local hitX, hitY, hitZ = CSPreScene.LinearCastGround(SL.MainCamera:GetCamera()) --MainCamera.camera)
    local coord = Scene.WorldToTile(hitX, hitY, hitZ)
    ---@param cell Cell
    local cell = CellManager.GetCell(coord.x, coord.z)
    if cell then
        if cell.ids and table.count(cell.ids) >= 1 and DebugFlag.LogEnable then
            local id = table.getKey(cell.ids, 1)
            local item = DropItemManager.GetItem(id)
            if item and DebugFlag.LogEnable then
                this.SetSprite(this.CursorIcon.Catch.atlas, this.CursorIcon.Catch.src)
                this.PointIn = true
                this.CursorChanged = true
                logError("鼠标光标：悬浮状态" .. "#" .. this.CursorIcon.Catch.atlas .. "#" .. this.CursorIcon.Catch.src)
            end
        end
    end
end

function this.SetDefault()
    this.SetSprite(this.CursorIcon.Normal.atlas, this.CursorIcon.Normal.src)
    this.CursorChanged = false
end

function this.Init()
    this.LeftMouseDown = function()
        this.SetSprite(this.CursorIcon.Select.atlas, this.CursorIcon.Select.src)
        this.CursorChanged = true
    end
    this.LeftMouseHold = function()
        this.SetSprite(this.CursorIcon.Select.atlas, this.CursorIcon.Select.src)
        this.CursorChanged = true
    end
    this.SetDefault()
end

function this.Update()
    if Misc.IsOnUI() or (not SL:GetIsInGame()) then
        return
    end
    if (Input.GetMouseButtonDown(0) and this.LeftMouseDown) then
        this.LeftMouseDown()
    elseif (Input.GetMouseButtonUp(0) and this.LeftMouseUp) then
        this.LeftMouseUp()
    elseif (Input.GetMouseButton(0) and this.LeftMouseHold) then
        this.LeftMouseHold()
    elseif (Input.GetMouseButtonDown(1) and this.RightMouseDown) then
        this. RightMouseDown()
    elseif (Input.GetMouseButtonUp(1) and this.RightMouseUp) then
        this. RightMouseUp()
    elseif (Input.GetMouseButton(1) and this.RightMouseHold) then
        this.RightMouseHold()
    else
        this.OnGoing()
        if not this.PointIn and this.CursorChanged then
            this.SetDefault()
        end
    end
end