extends SceneTree

const BootService = preload("res://entry/boot_service.gd")

const SETTINGS_PATH := "user://dev1_boot_settings_test.json"
const SAVE_PATH := "user://dev1_boot_save_test.json"

var failures: Array[String] = []


func _initialize() -> void:
	call_deferred("run_test")


func run_test() -> void:
	_cleanup()
	verify_clean_boot()
	verify_recoverable_resource_retry()
	verify_settings_and_save_diagnostics()
	_cleanup()
	if failures.is_empty():
		print("ABG_DEV1_BOOT_OK resources=true storage=true settings=true save=true recoverable_retry=true diagnostics=safe")
		quit(0)
	else:
		for failure in failures:
			push_error(failure)
		quit(1)


func verify_clean_boot() -> void:
	var service: RefCounted = _service()
	var terminal := _run(service)
	expect(terminal.state == "complete", "clean install reaches complete: %s" % str(terminal))
	expect(terminal.completed == terminal.total, "complete counts every named check")


func verify_recoverable_resource_retry() -> void:
	var service: RefCounted = _service()
	service.required_resources = ["res://entry/not-present.tres"]
	var failed := _run(service)
	expect(failed.state == "error" and failed.code == "REQUIRED_RESOURCE_UNAVAILABLE", "missing resource is recoverable and coded")
	expect(not failed.has("path"), "player diagnostic does not expose a local path")
	service.required_resources = ["res://entry/entry_shell.gd"]
	var retried := _run(service)
	expect(retried.state == "complete", "retry re-runs the verification operation")


func verify_settings_and_save_diagnostics() -> void:
	_write(SETTINGS_PATH, "not-json")
	var settings_failure := _run(_service())
	expect(settings_failure.code == "SETTINGS_FILE_INVALID", "invalid settings block with a stable diagnostic")
	_cleanup()
	_write(SAVE_PATH, JSON.stringify({"unexpected": true}))
	var save_failure := _run(_service())
	expect(save_failure.code == "SAVE_REVIEW_REQUIRED", "unsafe save requires review rather than reset")


func _service() -> RefCounted:
	var service: RefCounted = BootService.new()
	service.required_resources = [
		"res://main.tscn",
		"res://entry/entry_shell.gd",
		"res://assets/backgrounds/p9_3_guild_hall.png",
	]
	service.preferences_path = SETTINGS_PATH
	service.save_path = SAVE_PATH
	return service


func _run(service: RefCounted) -> Dictionary:
	var snapshot: Dictionary = service.begin()
	while snapshot.state == "running":
		snapshot = service.verify_next()
	return snapshot


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


func _cleanup() -> void:
	for path in [SETTINGS_PATH, SAVE_PATH]:
		if FileAccess.file_exists(path):
			DirAccess.remove_absolute(path)


func expect(condition: bool, message: String) -> void:
	if not condition:
		failures.append("DEV-1 Boot: %s" % message)