"""Checks for the tracked RF-001A decoder truth artifact."""

from __future__ import annotations

import json
from pathlib import Path


ROOT = Path(__file__).resolve().parents[1]
SPEC_PATH = ROOT / "configs" / "rf" / "rf001a_common_clock.json"
TRUTH_PATH = ROOT / "configs" / "rf" / "rf001a_truth_metadata.json"


def test_truth_metadata_is_small_complete_and_spec_aligned() -> None:
    spec = json.loads(SPEC_PATH.read_text(encoding="utf-8"))
    truth = json.loads(TRUTH_PATH.read_text(encoding="utf-8"))

    assert TRUTH_PATH.stat().st_size < 64 * 1024
    assert truth["shared_spec_test_id"] == spec["test_id"]
    assert truth["test_id"] == spec["legacy_waveform_test_id"]
    assert truth["seed"] == spec["seed"]
    assert truth["packet_count"] == spec["packet_count"] == 100
    assert truth["payload_size"] == spec["application_payload_bytes"] == 256
    assert truth["application_payload_bytes"] == truth["payload_size"]
    assert truth["expected_sequence_numbers"] == list(range(100))
    assert len(truth["expected_packet_hashes"]) == 100
    assert [
        row["sequence_number"] for row in truth["expected_packet_hashes"]
    ] == list(range(100))
    assert all(
        len(row["payload_sha256"]) == 64 and len(row["packet_sha256"]) == 64
        for row in truth["expected_packet_hashes"]
    )
    assert truth["tx_waveform_sha256"] == spec["expected_hardware_sha256"]
    assert truth["iq_sha256"] == spec["expected_canonical_sha256"]
    assert truth["modulation"] == spec["modulation"]
    assert truth["symbol_rate"] == spec["symbol_rate_sps"]
    assert truth["sample_rate"] == spec["sample_rate_hz"]
    assert truth["fec"] == spec["inner_fec"]
    assert truth["fec_rate"] == truth["fec"]
    assert truth["gap_ms"] == spec["inter_packet_gap_ms"]
    assert truth["inter_packet_gap_ms"] == truth["gap_ms"]
    assert (
        truth["digital_carrier_offset_hz"]
        == spec["digital_carrier_offset_hz"]
    )
    assert truth["tx_waveform_format"] == spec["hardware_format"]
    assert "waveform" not in truth
    assert "raw_iq" not in truth