extends SceneTree
## The update check (scripts/core/updates.gd): comparing versions, a plain
## version.json feed, a Gitea/GitHub release feed (its version.json asset and
## downloads by name), "you're up to date", broken feeds, the setting, the
## title screen's banner, and the advice on a "Different game version"
## refusal. No network: a fake feed answers.
## Run: godot --headless --path . --script res://tests/test_updates.gd

var _fails := 0
var _finished := false
var U: Node
var pages: Dictionary = {}

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

func _initialize() -> void:
	_run.call_deferred()

func _run() -> void:
	U = root.get_node("Updates")
	U.prefs_path = "user://test_updates.json"
	DirAccess.remove_absolute(U.prefs_path)
	U.load_prefs()
	await _body()
	check(_finished, "test ran to the end (no script errors)")
	DirAccess.remove_absolute(U.prefs_path)
	print("RESULT: %s (%d failures)" % ["PASS" if _fails == 0 else "FAIL", _fails])
	quit(1 if _fails > 0 else 0)

func _fake(url: String) -> String:
	return String(pages.get(url, "<html>404</html>"))

func _check_now() -> String:
	U.check()
	while U.state == "checking":
		await process_frame
	return U.state

func _body() -> void:
	print("versions")
	var C: Script = load("res://scripts/core/updates.gd")
	check(C.compare_versions("0.2.0", "0.1.0") == 1 and C.compare_versions("0.1.0", "0.2.0") == -1, "0.2.0 is newer than 0.1.0")
	check(C.compare_versions("v0.10.0", "0.9.5") == 1, "0.10 beats 0.9 (numbers, not letters), and a v in front is fine")
	check(C.compare_versions("1.0", "1.0.0") == 0 and C.compare_versions("1.0.0-beta", "1.0.0") == 0, "1.0 = 1.0.0 = 1.0.0-beta")
	check(U.version == ProjectSettings.get_setting("application/config/version") and not U.version.is_empty(),
		"this game knows its own version (%s)" % U.version)
	check(U.feed.begins_with("https://"), "and where to ask: %s" % U.feed)

	print("headless, no fake feed")
	U.fetch_override = Callable()
	check(await _check_now() == "off", "tests and bots never touch the network")

	U.fetch_override = _fake
	U.feed = "https://example.test/version.json"
	var plat: String = C.platform_key()
	print("a version.json feed")
	pages[U.feed] = JSON.stringify({"version": "9.1.0", "protocol": 99, "notes": "The Cove.", "page": "https://example.test/r/9.1.0",
		"downloads": {plat: {"file": "Emberwild-9.1.0-%s.zip" % plat, "url": "https://example.test/dl/%s.zip" % plat, "sha256": "ab"}}})
	check(await _check_now() == "available", "9.1.0 is out: available")
	check(U.latest_version() == "9.1.0" and U.latest_protocol() == 99, "its version and protocol")
	check(U.download_url() == "https://example.test/dl/%s.zip" % plat and U.download().sha256 == "ab", "this platform's download (%s), with its checksum" % plat)

	print("a release feed (Gitea / Forgejo / GitHub)")
	U.feed = "https://example.test/api/releases/latest"
	pages[U.feed] = JSON.stringify({"tag_name": "v9.2.0", "html_url": "https://example.test/releases/v9.2.0", "assets": [
		{"name": "version.json", "browser_download_url": "https://example.test/a/version.json"},
		{"name": "Emberwild-9.2.0-%s.zip" % plat, "browser_download_url": "https://example.test/a/game-%s.zip" % plat}]})
	pages["https://example.test/a/version.json"] = JSON.stringify({"version": "9.2.0", "protocol": 99,
		"downloads": {plat: {"file": "Emberwild-9.2.0-%s.zip" % plat, "sha256": "cd"}}, "windows_only_key": true})
	check(await _check_now() == "available" and U.latest_version() == "9.2.0", "the release's version.json is read: 9.2.0")
	check(U.download_url() == "https://example.test/a/game-%s.zip" % plat, "the download is the release asset with that file name")
	check(U.page == "https://example.test/releases/v9.2.0", "and the release page is kept")
	U.latest.downloads.erase(plat)
	check(U.download_url() == U.page, "no package for this platform: the release page instead")

	print("up to date, and broken feeds")
	pages[U.feed] = JSON.stringify({"version": U.version, "protocol": 12})
	check(await _check_now() == "current", "the same version: up to date")
	pages[U.feed] = JSON.stringify({"version": "0.0.1"})
	check(await _check_now() == "current", "an older one: up to date")
	pages[U.feed] = "<html>Bad gateway</html>"
	check(await _check_now() == "failed" and U.error.contains("JSON"), "a 502 page: failed, and says why (%s)" % U.error)
	pages[U.feed] = JSON.stringify({"tag_name": "v1", "assets": []})
	check(await _check_now() == "failed" and U.error.contains("version.json"), "a release with no version.json: failed")

	print("the setting")
	U.set_enabled(false)
	pages[U.feed] = JSON.stringify({"version": "9.3.0"})
	check(await _check_now() == "off", "off: no check")
	U.load_prefs()
	check(not U.enabled, "and it's remembered")
	U.set_enabled(true)
	check(await _check_now() == "available", "on again: 9.3.0")

	print("the title screen")
	var TS: Script = load("res://scripts/ui/title_screen.gd")
	var msg := "Different game version: this server runs Emberwild 9.3.0 (protocol 99), you have protocol 12. Update the game to join."
	check(TS.version_advice(msg).contains("9.3.0 is out"), "refused for an old version: it says the new one is out")
	check(TS.version_advice("Server is full").is_empty(), "(other refusals: nothing added)")
	pages[U.feed] = JSON.stringify({"version": "9.4.0", "notes": "Sea fishing."})
	U.state = "idle"
	var title: Node = load("res://scenes/title.tscn").instantiate()
	root.add_child(title)
	for _i in range(5):
		await process_frame
	while U.state == "checking":
		await process_frame
	await process_frame
	check(title.version_label != null and title.version_label.text.ends_with(U.version), "the version, bottom left (%s)" % title.version_label.text)
	check(title.update_banner.visible and title._update_text.text.contains("9.4.0 is out") and title._update_text.text.contains("Sea fishing."),
		"a banner: 9.4.0 is out, with its notes")
	check(title._update_text.text.contains("git pull"), "(running from the source: it says git pull)")
	title.queue_free()
	await process_frame
	U.fetch_override = Callable()
	_finished = true