# Holds weakrefs to a ScriptTextEditor and related children nodes
# that might be useful.  Though the TextEdit is really the only one, but
# since the tree may change, the first TextEdit under a CodeTextEditor is
# the one we use...so we hold a ref to the CodeTextEditor too.
class ScriptEditorControlRef:
	var _text_edit = null
	var _script_editor = null
	var _code_editor = null

	func _init(script_edit):
		_script_editor = weakref(script_edit)
		_populate_controls()

	func _populate_controls():
		# who knows if the tree will change so get the first instance of each
		# type of control we care about.  Chances are there won't be more than
		# one of these in the future, but their position in the tree may change.
		_code_editor = weakref(_get_first_child_named("CodeTextEditor", _script_editor.get_ref()))
		_text_edit = weakref(_get_first_child_named("CodeEdit", _code_editor.get_ref()))

	func _get_first_child_named(obj_name, parent_obj):
		if parent_obj == null:
			return null

		var kids = parent_obj.get_children()
		var index = 0
		var to_return = null

		while index < kids.size() and to_return == null:
			if str(kids[index]).find(str("[", obj_name)) != -1:
				to_return = kids[index]
			else:
				to_return = _get_first_child_named(obj_name, kids[index])
				if to_return == null:
					index += 1

		return to_return

	func get_script_text_edit():
		return _script_editor.get_ref()

	func get_text_edit():
		# ScriptTextEditors that are loaded when the project is opened
		# do not have their children populated yet.  So if we may have to
		# _populate_controls again if we don't have one.
		if _text_edit == null:
			_populate_controls()
		return _text_edit.get_ref()

	func get_script_editor():
		return _script_editor

	func is_visible():
		var to_return = false
		if _script_editor.get_ref():
			to_return = _script_editor.get_ref().visible
		return to_return


# ##############################################################################
#
# ##############################################################################

# Used to make searching for the controls easier and faster.
var _script_editors_parent = null
# reference the ScriptEditor instance
var _script_editor = null
# Array of ScriptEditorControlRef containing all the opened ScriptTextEditors
# and related controls at the time of the last refresh.
var _script_editor_controls = []

var _method_prefix = "test_"
var _inner_class_prefix = "Test"


func _init(script_edit):
	_script_editor = script_edit
	refresh()


func _is_script_editor(obj):
	return str(obj).find("[ScriptTextEditor") != -1


# Find the first ScriptTextEditor and then get its parent.  Done this way
# because who knows if the parent object will change.  This is somewhat
# future proofed.
func _find_script_editors_parent():
	var _first_editor = _get_first_child_of_type_name("ScriptTextEditor", _script_editor)
	if _first_editor != null:
		_script_editors_parent = _first_editor.get_parent()


func _populate_editors():
	if _script_editors_parent == null:
		return

	_script_editor_controls.clear()
	for child in _script_editors_parent.get_children():
		if _is_script_editor(child):
			var ref = ScriptEditorControlRef.new(child)
			_script_editor_controls.append(ref)


# Yes, this is the same as the one above but with a different name.  This was
# easier than trying to find a place where it could be used by both.
func _get_first_child_of_type_name(obj_name, parent_obj):
	if parent_obj == null:
		return null

	var kids = parent_obj.get_children()
	var index = 0
	var to_return = null

	while index < kids.size() and to_return == null:
		if str(kids[index]).find(str("[", obj_name)) != -1:
			to_return = kids[index]
		else:
			to_return = _get_first_child_of_type_name(obj_name, kids[index])
			if to_return == null:
				index += 1

	return to_return


func _get_func_name_from_line(text):
	text = text.strip_edges()
	var left = text.split("(")[0]
	var func_name = left.split(" ")[1]
	return func_name


func _get_class_name_from_line(text):
	text = text.strip_edges()
	var right = text.split(" ")[1]
	var the_name = right.rstrip(":")
	return the_name


func refresh():
	if _script_editors_parent == null:
		_find_script_editors_parent()

	if _script_editors_parent != null:
		_populate_editors()


func get_current_text_edit():
	var cur_script_editor = null
	var idx = 0

	while idx < _script_editor_controls.size() and cur_script_editor == null:
		if _script_editor_controls[idx].is_visible():
			cur_script_editor = _script_editor_controls[idx]
		else:
			idx += 1

	var to_return = null
	if cur_script_editor != null:
		to_return = cur_script_editor.get_text_edit()

	return to_return


func get_script_editor_controls():
	var to_return = []
	for ctrl_ref in _script_editor_controls:
		to_return.append(ctrl_ref.get_script_text_edit())

	return to_return


func get_line_info():
	var editor = get_current_text_edit()
	if editor == null:
		return

	var info = {script = null, inner_class = null, test_method = null}

	var line = editor.get_caret_line()
	var done_func = false
	var done_inner = false
	while line > 0 and (!done_func or !done_inner):
		if editor.can_fold_line(line):
			var text = editor.get_line(line)
			var strip_text = text.strip_edges(true, false)  # only left

			if !done_func and strip_text.begins_with("func "):
				var func_name = _get_func_name_from_line(text)
				if func_name.begins_with(_method_prefix):
					info.test_method = func_name
				done_func = true
				# If the func line is left justified then there won't be any
				# inner classes above it.
				if strip_text == text:
					done_inner = true

			if !done_inner and strip_text.begins_with("class"):
				var inner_name = _get_class_name_from_line(text)
				if inner_name.begins_with(_inner_class_prefix):
					info.inner_class = inner_name
					done_inner = true
					# if we found an inner class then we are already past
					# any test the cursor could be in.
					done_func = true
		line -= 1

	return info


func get_method_prefix():
	return _method_prefix


func set_method_prefix(method_prefix):
	_method_prefix = method_prefix


func get_inner_class_prefix():
	return _inner_class_prefix


func set_inner_class_prefix(inner_class_prefix):
	_inner_class_prefix = inner_class_prefix