class_name ToolRegistry
extends RefCounted
## Registry of `EditorTool` instances, keyed by id
## (docs/architecture/editor.md §7.1: "brush / object-place / select /
## erase, etc."). `EditorCore.use_tool()` is the single choke point every
## chunk mutation goes through -- UI code and tests both call tools by id
## through here rather than reaching into `ChunkEditorModel` directly.

var _tools: Dictionary = {}
var _active_id: String = ""


func register_tool(tool: EditorTool) -> void:
	_tools[tool.tool_id] = tool


func get_tool(tool_id: String) -> EditorTool:
	return _tools.get(tool_id, null)


func has_tool(tool_id: String) -> bool:
	return _tools.has(tool_id)


func get_tool_ids() -> Array:
	return _tools.keys()


func set_active_tool(tool_id: String) -> bool:
	if not _tools.has(tool_id):
		return false
	_active_id = tool_id
	return true


func get_active_tool_id() -> String:
	return _active_id


func get_active_tool() -> EditorTool:
	return _tools.get(_active_id, null)