extends "res://scripts/net/dm_transport.gd"
## The real transport: wraps an HTTPRequest Node the owner added to the tree.
## This is the one untested shim in the slice — it needs a live Node and a
## server, so it is verified by reading and by the harness live smoke, the same
## way the server's HTTP boundary is covered only by its gated --run-live test.
## A non-2xx status is NOT an error here; it is a normal DmResponse the service
## interprets. Only a transport-level failure (no response) yields failed().

const ProxyConfig = preload("res://scripts/net/proxy_config.gd")
const DmResponse = preload("res://scripts/net/dm_response.gd")

var _http: HTTPRequest


func _init(http: HTTPRequest) -> void:
	_http = http


func post_json(path: String, body: Dictionary) -> DmResponse:
	var url := ProxyConfig.base_url() + path
	var headers := ["Content-Type: application/json"]
	var payload := JSON.stringify(body)
	var err := _http.request(url, headers, HTTPClient.METHOD_POST, payload)
	if err != OK:
		return DmResponse.failed("request() failed to start: error %d" % err)
	# request_completed(result, response_code, headers, body) — awaiting a
	# multi-arg signal returns the args as an Array.
	var signal_args: Array = await _http.request_completed
	var result: int = signal_args[0]
	var response_code: int = signal_args[1]
	var raw: PackedByteArray = signal_args[3]
	if result != HTTPRequest.RESULT_SUCCESS:
		return DmResponse.failed("transport result %d" % result)
	var parsed = JSON.parse_string(raw.get_string_from_utf8())  # null if not JSON
	return DmResponse.ok(response_code, parsed)