extends HBoxContainer

const NODE_FONT := preload("res://ui/theme/fonts/font_text.tres")

const NODE_FONT_CURRENT := preload("res://ui/theme/fonts/font_text_bold.tres")

const NODE_COLOR := Color(0.572549, 0.560784, 0.721569)

var _last_course: Course

var _last_target: Resource

func _notification(what: int) -> void:

if what == NOTIFICATION_TRANSLATION_CHANGED:

yield(get_tree(), "idle_frame")

_rebuild_breadcrumbs()

func update_breadcrumbs(course: Course, target: Resource) -> void:

_last_course = course

_last_target = target

_rebuild_breadcrumbs()

func _rebuild_breadcrumbs() -> void:

if not _last_course or not _last_target:

return

_clear_navigation_nodes()

if _last_target is Lesson:

var lesson = _last_target as Lesson

var lesson_index := -1

var i := 0

for lesson_data in _last_course.lessons:

if lesson_data == lesson:

lesson_index = i

break

i += 1

var node_text: String = tr(lesson.title)

if lesson_index >= 0:

node_text = "%s. %s" % [lesson_index + 1, tr(lesson.title)]

_create_navigation_node(node_text, "", true)

return

if _last_target is Practice:

var practice = _last_target as Practice

# TODO: Should probably avoid relying on content ID for getting paths.

var lesson_path = practice.practice_id.get_base_dir().plus_file("lesson.tres")

var lesson: Lesson

var lesson_index := -1

var i := 0

for lesson_data in _last_course.lessons:

if lesson_data.resource_path == lesson_path:

lesson = lesson_data

lesson_index = i

break

i += 1

if lesson and lesson_index >= 0:

var lesson_text := "%d. %s" % [lesson_index + 1, tr(lesson.title)]

_create_navigation_node(lesson_text, lesson.resource_path)

var practice_index: int = (

lesson.get_practice_index(practice.practice_id)

)

var node_text: String = "%d. %s" % [practice_index + 1, tr(practice.title)]

_create_navigation_node(node_text, "", true)

return

func _clear_navigation_nodes() -> void:

for child_node in get_children():

remove_child(child_node)

child_node.queue_free()

func _create_navigation_node(text: String, path: String = "", current: bool = false) -> void:

if get_child_count() > 0:

var separator := Label.new()

separator.text = "•"

separator.add_font_override("font", NODE_FONT)

separator.add_color_override("font_color", NODE_COLOR)

add_child(separator)

if path.empty():

var navigation_node := Label.new()

navigation_node.text = text

navigation_node.add_font_override("font", NODE_FONT_CURRENT if current else NODE_FONT)

navigation_node.add_color_override("font_color", NODE_COLOR)

add_child(navigation_node)

else:

var navigation_node := Button.new()

navigation_node.flat = true

navigation_node.text = text

navigation_node.add_font_override("font", NODE_FONT_CURRENT if current else NODE_FONT)

navigation_node.mouse_default_cursor_shape = CURSOR_POINTING_HAND

add_child(navigation_node)

navigation_node.connect("pressed", self, "_on_navigation_pressed", [ path ])

func _on_navigation_pressed(path: String) -> void:

if path.empty():

return

NavigationManager.navigate_to(path)