extends GdUnitTestSuite

## NEO-110: `EncounterProgressClient` GET parse + failure signals.

const EncounterProgressClient := preload("res://scripts/encounter_progress_client.gd")

const PROTOTYPE_ENCOUNTER_ID := "prototype_combat_pocket"

var _progress_capture: Dictionary = {}


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


class MockHttpTransport:
	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_GET,
		_request_data: String = ""
	) -> Error:
		last_url = url
		request_completed.emit(
			HTTPRequest.RESULT_SUCCESS,
			response_code,
			PackedStringArray(),
			body_json.to_utf8_buffer()
		)
		return OK


static func _inactive_progression_json() -> String:
	return (
		'{"schemaVersion":1,"playerId":"dev-local-1","encounters":'
		+ '[{"encounterId":"prototype_combat_pocket","state":"inactive","defeatedTargetIds":[]}]}'
	)


static func _active_two_defeats_json() -> String:
	return (
		'{"schemaVersion":1,"playerId":"dev-local-1","encounters":'
		+ '[{"encounterId":"prototype_combat_pocket","state":"active",'
		+ '"defeatedTargetIds":["prototype_npc_melee","prototype_npc_ranged"]}]}'
	)


static func _completed_with_grants_json() -> String:
	return (
		'{"schemaVersion":1,"playerId":"dev-local-1","encounters":'
		+ '[{"encounterId":"prototype_combat_pocket","state":"completed",'
		+ '"defeatedTargetIds":["prototype_npc_elite","prototype_npc_melee","prototype_npc_ranged"],'
		+ '"completedAt":"2026-05-31T12:00:00Z",'
		+ '"rewardGrantSummary":[{"itemId":"scrap_metal_bulk","quantity":10},'
		+ '{"itemId":"contract_handoff_token","quantity":1}]}]}'
	)


func _make_client(transport: Node) -> Node:
	var c: Node = EncounterProgressClient.new()
	c.set("injected_http", transport)
	auto_free(transport)
	auto_free(c)
	add_child(c)
	return c


func test_parse_inactive_encounter_row() -> void:
	# Arrange
	var json := _inactive_progression_json()
	# Act
	var snapshot: Variant = EncounterProgressClient.parse_encounter_progress_json(json)
	# Assert
	assert_that(snapshot is Dictionary).is_true()
	var c: Node = EncounterProgressClient.new()
	auto_free(c)
	var row: Dictionary = c.call("encounter_row", PROTOTYPE_ENCOUNTER_ID, snapshot as Dictionary)
	assert_that(str(row.get("state", ""))).is_equal("inactive")
	assert_that((row.get("defeatedTargetIds", []) as Array).size()).is_equal(0)


func test_parse_active_row_has_two_defeats() -> void:
	# Arrange
	var json := _active_two_defeats_json()
	# Act
	var snapshot: Variant = EncounterProgressClient.parse_encounter_progress_json(json)
	# Assert
	assert_that(snapshot is Dictionary).is_true()
	var c: Node = EncounterProgressClient.new()
	auto_free(c)
	var row: Dictionary = c.call("encounter_row", PROTOTYPE_ENCOUNTER_ID, snapshot as Dictionary)
	assert_that(str(row.get("state", ""))).is_equal("active")
	assert_that((row.get("defeatedTargetIds", []) as Array).size()).is_equal(2)


func test_parse_completed_row_has_reward_grant_summary() -> void:
	# Arrange
	var json := _completed_with_grants_json()
	# Act
	var snapshot: Variant = EncounterProgressClient.parse_encounter_progress_json(json)
	# Assert
	assert_that(snapshot is Dictionary).is_true()
	var c: Node = EncounterProgressClient.new()
	auto_free(c)
	var row: Dictionary = c.call("encounter_row", PROTOTYPE_ENCOUNTER_ID, snapshot as Dictionary)
	assert_that(str(row.get("state", ""))).is_equal("completed")
	var grants: Variant = row.get("rewardGrantSummary", null)
	assert_that(grants is Array).is_true()
	assert_that((grants as Array).size()).is_equal(2)


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


func test_http_404_emits_encounter_sync_failed() -> void:
	# Arrange
	var transport := MockHttpTransport.new()
	transport.response_code = 404
	var c := _make_client(transport)
	monitor_signals(c)
	# Act
	c.call("request_sync_from_server")
	# Assert
	await assert_signal(c).is_emitted("encounter_sync_failed", "HTTP 404 (player unknown)")


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


func test_invalid_schema_emits_encounter_sync_failed() -> void:
	# Arrange
	var transport := MockHttpTransport.new()
	transport.body_json = '{"schemaVersion":2,"playerId":"dev-local-1","encounters":[]}'
	var c := _make_client(transport)
	monitor_signals(c)
	# Act
	c.call("request_sync_from_server")
	# Assert
	await assert_signal(c).is_emitted(
		"encounter_sync_failed", "non-JSON body or schemaVersion mismatch"
	)