##
## Roles file, implements an interface to roles like in perl
## The roles module is inteded as an interface to easily write mods
## for existing objects as such, it also contains functions to look
## for a mods/ folder in the current directory
##

## Simple dymmy role for testing
class DummyRole extends Node:
	func _init():
		pass

	func dummyfunc():
		globl.dbg_print("Dummy function called in dummy role")


## Check if a given object implements a role
## The role argument is given as lib.Role.<Name_of_role_class>
## But Godot shows this as GDScript anyway
static func fulfills(obj : Node, role : Variant) -> bool:
	for ch in obj.get_children():
		if is_instance_of(ch, role):
			return true
	return false

## Implement the given role into the object
static func consume(obj : Node, role : Variant, args : Array):
	var new_role = role.callv('new', args)
	obj.add_child(new_role)
	return new_role

## Implements the given class but from a file instead
static func consume_gd(obj :Node, gdcls : GDScript, args :Array):
	var newrole = gdcls.callv("new", args)
	obj.add_child.call_deferred(gdcls)
	var roles = obj.get_meta("roles")
	if not roles:
		obj.set_meta("roles", [gdcls])
	else:
		roles.push_back(gdcls)
		obj.set_meta("roles", roles)
	return newrole

## Checks to see if a given object implements a gd script file role
static func fulfills_gd(obj :Node, gdcls : GDScript) -> bool:
	for ch in obj.get_children():
		if is_instance_of(ch, gdcls):
			return true
	return false

## Check if mods are present
static func get_mods_folder() -> DirAccess:
	var exec_folder = OS.get_executable_path().get_base_dir()
	var mod_path = DirAccess.open(exec_folder)
	# expecting a file called mods/ in the executable install path
	# but only on release builds
	if OS.is_debug_build():
		# Debugging, use user file path for testing
		mod_path = DirAccess.open("user://mods")
	return mod_path

## Get mod folders
static func get_mod():
	push_error("Not implemented")

.