extends GdUnitTestSuite

## NEO-122: `QuestProgressClient` GET parse, accept POST, and failure signals.

const QuestProgressClient := preload("res://scripts/quest_progress_client.gd")

const PROTOTYPE_QUEST_GATHER_ID := "prototype_quest_gather_intro"

var _progress_capture: Dictionary = {}
var _accept_capture: Dictionary = {}
var _accept_failed_capture: Dictionary = {}


func _capture_progress(snapshot: Dictionary) -> void:
	_progress_capture = snapshot


func _capture_accept(quest_id: String, result: Dictionary) -> void:
	_accept_capture = {"questId": quest_id, "result": result}


func _capture_accept_failed(quest_id: String, reason: String) -> void:
	_accept_failed_capture = {"questId": quest_id, "reason": reason}


class MockHttpTransport:
	extends Node
	signal request_completed(
		result: int, response_code: int, headers: PackedStringArray, body: PackedByteArray
	)
	var last_url: String = ""
	var last_method: int = HTTPClient.METHOD_GET
	var response_code: int = 200
	var body_json: String = ""

	func request(
		url: String,
		_custom_headers: PackedStringArray = PackedStringArray(),
		method: HTTPClient.Method = HTTPClient.METHOD_GET,
		_request_data: String = ""
	) -> Error:
		last_url = url
		last_method = method
		request_completed.emit(
			HTTPRequest.RESULT_SUCCESS,
			response_code,
			PackedStringArray(),
			body_json.to_utf8_buffer()
		)
		return OK


static func _not_started_progress_json() -> String:
	return (
		'{"schemaVersion":1,"playerId":"dev-local-1","quests":'
		+ '[{"questId":"prototype_quest_gather_intro","status":"not_started",'
		+ '"currentStepIndex":0,"objectiveCounters":{}}]}'
	)


static func _active_partial_json() -> String:
	return (
		'{"schemaVersion":1,"playerId":"dev-local-1","quests":'
		+ '[{"questId":"prototype_quest_gather_intro","status":"active",'
		+ '"currentStepIndex":0,"objectiveCounters":{"gather_intro_obj_scrap":2}}]}'
	)


static func _completed_json() -> String:
	return (
		'{"schemaVersion":1,"playerId":"dev-local-1","quests":'
		+ '[{"questId":"prototype_quest_gather_intro","status":"completed",'
		+ '"currentStepIndex":0,"objectiveCounters":{},'
		+ '"completedAt":"2026-06-07T12:00:00Z"}]}'
	)


static func _accept_success_json() -> String:
	return (
		'{"schemaVersion":1,"accepted":true,"quest":'
		+ '{"questId":"prototype_quest_gather_intro","status":"active",'
		+ '"currentStepIndex":0,"objectiveCounters":{}}}'
	)


static func _accept_deny_json() -> String:
	return (
		'{"schemaVersion":1,"accepted":false,"reasonCode":"prerequisite_incomplete"}'
	)


func _make_client(sync_transport: Node, accept_transport: Node = null) -> Node:
	var c: Node = QuestProgressClient.new()
	c.set("injected_sync_http", sync_transport)
	var accept_http: Node = accept_transport if accept_transport != null else sync_transport
	c.set("injected_accept_http", accept_http)
	auto_free(sync_transport)
	if accept_transport != null and accept_transport != sync_transport:
		auto_free(accept_transport)
	auto_free(c)
	add_child(c)
	return c


class NoopHttpTransport:
	extends Node
	signal request_completed(
		result: int, response_code: int, headers: PackedStringArray, body: PackedByteArray
	)

	func request(
		_url: String,
		_custom_headers: PackedStringArray = PackedStringArray(),
		_method: HTTPClient.Method = HTTPClient.METHOD_GET,
		_request_data: String = ""
	) -> Error:
		return OK


class PendingAcceptHttpTransport:
	extends Node
	signal request_completed(
		result: int, response_code: int, headers: PackedStringArray, body: PackedByteArray
	)
	var last_url: String = ""
	var response_code: int = 200
	var body_json: String = ""

	func request(
		url: String,
		_custom_headers: PackedStringArray = PackedStringArray(),
		_method: HTTPClient.Method = HTTPClient.METHOD_POST,
		_request_data: String = ""
	) -> Error:
		last_url = url
		return OK

	func complete_pending() -> void:
		request_completed.emit(
			HTTPRequest.RESULT_SUCCESS,
			response_code,
			PackedStringArray(),
			body_json.to_utf8_buffer()
		)


func test_parse_not_started_quest_row() -> void:
	# Arrange
	var json := _not_started_progress_json()
	# Act
	var snapshot: Variant = QuestProgressClient.parse_quest_progress_json(json)
	# Assert
	assert_that(snapshot is Dictionary).is_true()
	var c: Node = QuestProgressClient.new()
	auto_free(c)
	var row: Dictionary = c.call("quest_row", PROTOTYPE_QUEST_GATHER_ID, snapshot as Dictionary)
	assert_that(str(row.get("status", ""))).is_equal("not_started")


func test_parse_active_row_has_objective_counters() -> void:
	# Arrange
	var json := _active_partial_json()
	# Act
	var snapshot: Variant = QuestProgressClient.parse_quest_progress_json(json)
	# Assert
	assert_that(snapshot is Dictionary).is_true()
	var c: Node = QuestProgressClient.new()
	auto_free(c)
	var row: Dictionary = c.call("quest_row", PROTOTYPE_QUEST_GATHER_ID, snapshot as Dictionary)
	assert_that(str(row.get("status", ""))).is_equal("active")
	var counters: Variant = row.get("objectiveCounters", null)
	assert_that(counters is Dictionary).is_true()
	assert_that(int((counters as Dictionary).get("gather_intro_obj_scrap", 0))).is_equal(2)


func test_parse_completed_row_has_completed_at() -> void:
	# Arrange
	var json := _completed_json()
	# Act
	var snapshot: Variant = QuestProgressClient.parse_quest_progress_json(json)
	# Assert
	assert_that(snapshot is Dictionary).is_true()
	var c: Node = QuestProgressClient.new()
	auto_free(c)
	var row: Dictionary = c.call("quest_row", PROTOTYPE_QUEST_GATHER_ID, snapshot as Dictionary)
	assert_that(str(row.get("status", ""))).is_equal("completed")
	assert_that(str(row.get("completedAt", ""))).contains("2026-06-07")


func test_request_sync_emits_quest_progress_received() -> void:
	# Arrange
	_progress_capture = {}
	var transport := MockHttpTransport.new()
	transport.body_json = _not_started_progress_json()
	var noop := NoopHttpTransport.new()
	var c := _make_client(transport, noop)
	c.connect("quest_progress_received", Callable(self, "_capture_progress"))
	monitor_signals(c)
	# Act
	c.call("request_sync_from_server")
	# Assert
	await assert_signal(c).is_emitted("quest_progress_received", any())
	assert_that(_progress_capture.get("playerId", "")).is_equal("dev-local-1")
	assert_that(transport.last_url).contains("/quest-progress")


func test_http_404_emits_quest_sync_failed() -> void:
	# Arrange
	var transport := MockHttpTransport.new()
	transport.response_code = 404
	var noop := NoopHttpTransport.new()
	var c := _make_client(transport, noop)
	monitor_signals(c)
	# Act
	c.call("request_sync_from_server")
	# Assert
	await assert_signal(c).is_emitted("quest_sync_failed", "HTTP 404 (player unknown)")


func test_parse_quest_progress_json_returns_null_for_schema_mismatch() -> void:
	# Arrange
	var json := '{"schemaVersion":2,"playerId":"dev-local-1","quests":[]}'
	# Act
	var snapshot: Variant = QuestProgressClient.parse_quest_progress_json(json)
	# Assert
	assert_that(snapshot).is_null()


func test_request_accept_emits_quest_accept_result_received() -> void:
	# Arrange
	_accept_capture = {}
	var transport := MockHttpTransport.new()
	transport.body_json = _accept_success_json()
	var noop := NoopHttpTransport.new()
	var c := _make_client(noop, transport)
	c.connect("quest_accept_result_received", Callable(self, "_capture_accept"))
	# Act
	var started: bool = bool(c.call("request_accept", PROTOTYPE_QUEST_GATHER_ID))
	# Assert
	assert_that(started).is_true()
	assert_that(_accept_capture.get("questId", "")).is_equal(PROTOTYPE_QUEST_GATHER_ID)
	var accept_result: Dictionary = _accept_capture.get("result", {}) as Dictionary
	assert_that(bool(accept_result.get("accepted", false))).is_true()
	assert_that(transport.last_url).contains("/accept")
	assert_that(transport.last_method).is_equal(HTTPClient.METHOD_POST)


func test_request_accept_emits_deny_with_reason_code() -> void:
	# Arrange
	_accept_capture = {}
	var transport := MockHttpTransport.new()
	transport.body_json = _accept_deny_json()
	var noop := NoopHttpTransport.new()
	var c := _make_client(noop, transport)
	c.connect("quest_accept_result_received", Callable(self, "_capture_accept"))
	# Act
	c.call("request_accept", "prototype_quest_refine_intro")
	# Assert
	var result: Dictionary = _accept_capture.get("result", {}) as Dictionary
	assert_that(bool(result.get("accepted", true))).is_false()
	assert_that(str(result.get("reasonCode", ""))).is_equal("prerequisite_incomplete")


func test_http_404_on_accept_emits_quest_accept_failed() -> void:
	# Arrange
	_accept_failed_capture = {}
	var transport := MockHttpTransport.new()
	transport.response_code = 404
	var noop := NoopHttpTransport.new()
	var c := _make_client(noop, transport)
	c.connect("quest_accept_failed", Callable(self, "_capture_accept_failed"))
	# Act
	c.call("request_accept", PROTOTYPE_QUEST_GATHER_ID)
	# Assert
	assert_that(_accept_failed_capture.get("questId", "")).is_equal(PROTOTYPE_QUEST_GATHER_ID)
	assert_that(str(_accept_failed_capture.get("reason", ""))).is_equal("HTTP 404 (player unknown)")


func test_request_accept_returns_false_when_accept_busy() -> void:
	# Arrange
	var pending := PendingAcceptHttpTransport.new()
	pending.body_json = _accept_success_json()
	var noop := NoopHttpTransport.new()
	var c := _make_client(noop, pending)
	# Act
	var first: bool = bool(c.call("request_accept", PROTOTYPE_QUEST_GATHER_ID))
	var second: bool = bool(c.call("request_accept", "prototype_quest_refine_intro"))
	# Assert
	assert_that(first).is_true()
	assert_that(second).is_false()
	pending.complete_pending()