import json
import ctypes

from target_simulator.core.sfp_structures import (
    SfpRisStatusPayload,
    RisScenario,
    RisTarget,
    RisTargetsBlock,
    DSP_RIS_MAX_TGT,
)
from target_simulator.gui.sfp_debug_window import DebugPayloadRouter


def build_test_payload():
    # build a minimal payload with scenario + one target enabled
    payload = SfpRisStatusPayload()
    # fill scenario
    payload.scenario.timetag = 123456
    payload.scenario.platform_azimuth = 1.23
    payload.scenario.vx = 10.0
    payload.scenario.vy = -2.5
    payload.scenario.vz = 0.0
    payload.scenario.baro_altitude = 100.0
    payload.scenario.true_heading = 45.0
    payload.scenario.latitude = 12.345678
    payload.scenario.longitude = 98.765432

    # fill first target
    payload.tgt.tgt[0].flags = 1
    payload.tgt.tgt[0].heading = 90.0
    payload.tgt.tgt[0].x = 1.0
    payload.tgt.tgt[0].y = 2.0
    payload.tgt.tgt[0].z = 3.0

    return bytes(payload)


def test_ris_router_parsing():
    import time

    router = DebugPayloadRouter()
    data = build_test_payload()
    # call processing routine directly (internal API changed to use processing pipeline)
    router._process_ris_status_payload(bytearray(data), time.monotonic())
    # retrieve latest payloads
    latest = router.get_and_clear_latest_payloads()
    # Expect one of the RIS payload variants produced by the router
    assert any(k in latest for k in ("RIS_STATUS", "RIS_STATUS_JSON", "RIS_STATUS_TEXT"))
    # textual content should include timetag and heading
    if "RIS_STATUS_JSON" in latest:
        txt = latest["RIS_STATUS_JSON"].decode("utf-8")
    elif "RIS_STATUS_TEXT" in latest:
        txt = latest["RIS_STATUS_TEXT"].decode("utf-8")
    else:
        txt = latest.get("RIS_STATUS", b"").decode("utf-8")
    assert "timetag" in txt.lower() or "timetag" in txt

    # Note: _handle_ris_status also stores RIS_STATUS as text; JSON variant stored by SfpDebugWindow logic
    # If JSON is not present in router (router stores only last payload per key) we at least ensure textual parse exists