extends SceneTree

# Headless test: run with
#   godot --headless -s res://tests/test_setup_editor_delete.gd
# The map editor could write setups but never remove one, so a mistyped name
# or an abandoned experiment stayed in the pool forever - and every planet of
# that type kept drawing it. It also listed setups in a font small enough to
# be awkward to hit on a phone.
#
# Deleting is destructive and the list is the only place it can be triggered
# from, so the panel is explicitly MODAL about it: a tap loads, unless the
# delete button has been pressed first, and the panel says which it is.
#
# Covers:
#   A. the load panel lists saved setups and a tap loads one (unarmed)
#   B. arming changes what a tap means, and says so in the title
#   C. an armed tap deletes the file and drops it from the registry
#   D. one tap deletes one setup - it disarms itself afterwards
#   E. deleting the setup currently being edited leaves a fresh one open,
#      rather than one whose next save would recreate the file
#   F. the list is laid out at a size worth tapping at

const SCRATCH_ID: String = "test_delete_scratch"
const SCRATCH_PATH: String = "res://PlanetSetups/%s.tres" % SCRATCH_ID
const KEEP_ID: String = "test_delete_keeper"
const KEEP_PATH: String = "res://PlanetSetups/%s.tres" % KEEP_ID
const MIN_LIST_FONT_SIZE: int = 30

var editor: Node
var elapsed: float = 0.0
var stage: int = 0


func _initialize() -> void:
	_remove(SCRATCH_PATH)
	_remove(KEEP_PATH)
	PlanetSetups.rescan()
	editor = load("res://surface/PlanetSetupEditor.tscn").instantiate()
	root.add_child(editor)


func _process(delta: float) -> bool:
	elapsed += delta
	if stage != 0:
		return false
	# _ready() (palette build, initial new_setup) needs a frame to flush -
	# same hazard as tests/test_setup_editor.gd.
	if elapsed < 0.1:
		return false
	stage = 1

	# --- F. the list is tappable --------------------------------------------
	var list: ItemList = editor.load_list
	var font_size: int = list.get_theme_font_size("font_size")
	if font_size < MIN_LIST_FONT_SIZE:
		return _fail("the setup list draws at font size %d; %d or more is what makes the rows worth tapping at" \
			% [font_size, MIN_LIST_FONT_SIZE])
	print("setup list font size %d" % font_size)

	# Two setups, so deleting one still leaves a populated list - a panel that
	# empties would hide itself and mask a wrong-row deletion.
	editor.new_setup(KEEP_ID, "Delete Keeper", "rocky")
	editor.add_capture_point(Vector2(10, 20))
	if not editor.save_setup().ok:
		return _fail("could not save the keeper setup")
	editor.new_setup(SCRATCH_ID, "Delete Scratch", "rocky")
	editor.add_capture_point(Vector2(30, 40))
	if not editor.save_setup().ok:
		return _fail("could not save the scratch setup")

	# --- A. the panel lists them, and an unarmed tap loads -------------------
	editor._on_load_pressed()
	if not editor.load_panel.visible:
		return _fail("the load panel did not open")
	if editor.load_title_label.text != "Load a setup":
		return _fail("the panel opened in delete mode: '%s'" % editor.load_title_label.text)
	var keep_index: int = Array(editor._load_list_setup_ids).find(KEEP_ID)
	var scratch_index: int = Array(editor._load_list_setup_ids).find(SCRATCH_ID)
	if keep_index < 0 or scratch_index < 0:
		return _fail("the panel listed %s, missing one of the two just saved" \
			% str(editor._load_list_setup_ids))
	editor._on_load_list_item_selected(keep_index)
	if String(editor.current_setup.setup_id) != KEEP_ID:
		return _fail("an unarmed tap did not load '%s' (got '%s')" % [KEEP_ID, editor.current_setup.setup_id])
	if editor.load_panel.visible:
		return _fail("loading left the panel open")
	print("unarmed tap loaded '%s' and closed the panel" % KEEP_ID)

	# --- B. arming changes the meaning of a tap, visibly ---------------------
	editor._on_load_pressed()
	editor._on_delete_map_pressed()
	if not editor._delete_map_armed:
		return _fail("pressing the delete button did not arm delete mode")
	if editor.load_title_label.text == "Load a setup":
		return _fail("delete mode did not change the panel title, so nothing tells the player a tap now deletes")
	print("armed: panel now reads '%s'" % editor.load_title_label.text)

	# --- C. an armed tap deletes ---------------------------------------------
	scratch_index = Array(editor._load_list_setup_ids).find(SCRATCH_ID)
	editor._on_load_list_item_selected(scratch_index)
	if FileAccess.file_exists(ProjectSettings.globalize_path(SCRATCH_PATH)):
		return _fail("the setup file is still on disk after an armed tap")
	for setup in PlanetSetups.all():
		if String(setup.setup_id) == SCRATCH_ID:
			return _fail("the registry still offers '%s' after deleting it" % SCRATCH_ID)
	if Array(editor._load_list_setup_ids).find(KEEP_ID) < 0:
		return _fail("deleting one setup also removed '%s' from the list" % KEEP_ID)
	print("armed tap deleted '%s'; '%s' untouched" % [SCRATCH_ID, KEEP_ID])

	# --- D. one tap, one deletion -------------------------------------------
	if editor._delete_map_armed:
		return _fail("delete mode stayed armed after a deletion, so the next tap would delete too")
	if editor.load_title_label.text != "Load a setup":
		return _fail("the panel still reads '%s' after disarming" % editor.load_title_label.text)
	print("delete mode disarmed itself after one deletion")

	# --- E. deleting what is open leaves a fresh setup ------------------------
	editor.load_setup(KEEP_ID)
	if String(editor.current_setup.setup_id) != KEEP_ID:
		return _fail("could not reopen '%s' to test deleting the open setup" % KEEP_ID)
	var outcome: Dictionary = editor.delete_setup(KEEP_ID)
	if not outcome.ok:
		return _fail("deleting the open setup failed: %s" % outcome.message)
	if String(editor.current_setup.setup_id) == KEEP_ID:
		return _fail("the editor is still holding '%s' after deleting it - the next save would put the file straight back" % KEEP_ID)
	if not editor.current_setup.capture_points.is_empty():
		return _fail("the replacement setup carried the deleted one's capture points over")
	print("deleting the open setup left a fresh '%s' being edited" % editor.current_setup.setup_id)

	# Deleting something that is not there is refused, not silently "ok".
	if editor.delete_setup(SCRATCH_ID).ok:
		return _fail("deleting an already-deleted setup reported success")

	_remove(SCRATCH_PATH)
	_remove(KEEP_PATH)
	PlanetSetups.rescan()
	print("TEST_SETUP_EDITOR_DELETE: PASS")
	quit(0)
	return true


func _remove(res_path: String) -> void:
	var path: String = ProjectSettings.globalize_path(res_path)
	if FileAccess.file_exists(path):
		DirAccess.remove_absolute(path)
	if FileAccess.file_exists(path + ".uid"):
		DirAccess.remove_absolute(path + ".uid")


func _fail(message: String) -> bool:
	_remove(SCRATCH_PATH)
	_remove(KEEP_PATH)
	print("TEST_SETUP_EDITOR_DELETE: FAIL (%s)" % message)
	quit(1)
	return true