package scratchpad

import "github.com/mdirkse/i3ipc"

import "gitea.ashishdsouza.com/ashish/i3-last-scratchpad/notify"


func GetLastScratchpadNode(ipcSocket *i3ipc.IPCSocket) *i3ipc.I3Node {
	var root, err = ipcSocket.GetTree()
	if err != nil {
		notify.SendNotification("Failed to fetch layout tree", notify.CriticalPriority)
		panic(err)
	}

	var leaves = root.Leaves()
	for i := len(leaves) - 1; i >= 0; i-- {
		if leaves[i].Parent == nil {
			notify.FatalNotification("Leaf node nas no parent")
		}

		// https://i3wm.org/docs/ipc.html#_tree_reply
		if leaves[i].Parent.Scratchpad_State != "none" {
			return leaves[i]
		}
	}
	return nil
}