"""Dump body bytes around a specific offset."""
import sys
sys.path.insert(0, ".")
from analysis.load_bundle import load_bundle


def dump_around(name: str, center: int, radius: int = 96):
    b = load_bundle(name)
    body = b.body
    start = max(0, center - radius)
    end = min(len(body), center + radius)
    print(f"\n=== {name} body[{start}:{end}] (full body={len(body)}) ===")
    for i in range(start, end, 32):
        row = body[i:i+32]
        marker = "  <-- center" if i <= center < i+32 else ""
        print(f"  +{i:>5}  {row.hex(' ')}{marker}")


def main():
    # Look at the trailer transitions
    trailer_starts = {"event-a": 7047, "event-b": 6475, "event-c": 4043, "event-d": 3941}
    for name, off in trailer_starts.items():
        dump_around(name, off, 96)


if __name__ == "__main__":
    main()