extends SceneTree
## The rename (Emberwild -> Cinderwild, 0.6.1): the first start copies your
## saves, identity and settings across from the old user-data folder, once,
## without overwriting anything already there, and only from the newest old
## name (so a world you deleted under Emberwild doesn't come back from the
## Valheimlike folder).
## Run: godot --headless --path . --script res://tests/test_boot.gd

var _fails := 0

func check(cond: bool, what: String) -> void:
	print(("  ok   " if cond else "  FAIL ") + what)
	if not cond:
		_fails += 1

func _write(path: String, text: String) -> void:
	DirAccess.make_dir_recursive_absolute(path.get_base_dir())
	var f := FileAccess.open(path, FileAccess.WRITE)
	f.store_string(text)
	f.close()

func _read(path: String) -> String:
	return FileAccess.get_file_as_string(path) if FileAccess.file_exists(path) else ""

func _rm(dir: String) -> void:
	if not DirAccess.dir_exists_absolute(dir):
		return
	var da := DirAccess.open(dir)
	for f in da.get_files():
		DirAccess.remove_absolute(dir.path_join(f))
	for d in da.get_directories():
		_rm(dir.path_join(d))
	DirAccess.remove_absolute(dir)

func _initialize() -> void:
	var B: Node = root.get_node("Boot")
	var base := OS.get_user_data_dir().path_join("test_boot")
	_rm(base)
	var ember := base.path_join("Emberwild")
	var valheim := base.path_join("Valheimlike")
	var cinder := base.path_join("Cinderwild")
	_write(ember.path_join("worlds/home/state.json"), "ember home")
	_write(ember.path_join("identity.json"), "me")
	_write(ember.path_join("logs/godot.log"), "old log")
	_write(ember.path_join("migrated_from_valheimlike.txt"), "old marker")
	_write(valheim.path_join("worlds/deleted/state.json"), "gone")
	_write(cinder.path_join("audio.json"), "new settings")
	_write(ember.path_join("audio.json"), "old settings")

	print("the first start")
	var n: int = 0
	for old_name in B.OLD_NAMES:
		var old_dir := base.path_join(old_name)
		if DirAccess.dir_exists_absolute(old_dir):
			n = B.migrate_from(old_dir, cinder, old_name)
			break
	check(n == 2, "copies the old folder's files (%d)" % n)
	check(_read(cinder.path_join("worlds/home/state.json")) == "ember home" and _read(cinder.path_join("identity.json")) == "me",
		"your worlds and identity come across")
	check(_read(cinder.path_join("audio.json")) == "new settings", "nothing already there is overwritten")
	check(not FileAccess.file_exists(cinder.path_join("logs/godot.log")), "logs stay behind")
	check(not FileAccess.file_exists(cinder.path_join("worlds/deleted/state.json")), "the older Valheimlike folder isn't raked over")
	check(FileAccess.file_exists(ember.path_join("identity.json")), "the old folder's left as it was")
	check(FileAccess.file_exists(cinder.path_join("migrated_from_emberwild.txt")) and not FileAccess.file_exists(cinder.path_join("migrated_from_valheimlike.txt")),
		"a marker says it's done")
	print("the next start")
	_write(ember.path_join("worlds/later/state.json"), "later")
	check(B.migrate_from(ember, cinder, "Emberwild") == 0 and not FileAccess.file_exists(cinder.path_join("worlds/later/state.json")), "it only happens once")
	_rm(base)
	print("RESULT: %s (%d failures)" % ["PASS" if _fails == 0 else "FAIL", _fails])
	quit(1 if _fails > 0 else 0)