import time
import os
import sys
import ctypes

repo_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
if repo_root not in sys.path:
    sys.path.insert(0, repo_root)

from pymsc.core.app_controller import AppController

print('RunWithPlaceholder: creating AppController and registering placeholder for SA=29')
app = AppController()

# Create a placeholder ctypes.Structure of 64 bytes (32 words)
class Payload64(ctypes.Structure):
    _pack_ = 1
    _fields_ = [("raw", ctypes.c_uint8 * 64)]

# Directly insert into rx_map so receiver will attempt to decode SA=29 payloads
app.rx_map[29] = Payload64

app.start()

# Let it run for a short time to collect packets from the radar
time.sleep(2.0)

print('RunWithPlaceholder: monitor_queue contents (first 50 entries):')
count = 0
while not app.monitor_queue.empty() and count < 50:
    item = app.monitor_queue.get()
    print(item)
    count += 1

print('RunWithPlaceholder: stopping AppController')
app.stop()
print('Done')