import sys
import os

# Add parent directory to path
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from contec_parser import parse_contec_binary_packet

# Read captured stream
filepath = "/home/prathiyuman/Prathiyuman/ContecMonitor/fiveparaminte-main/scratch/raw_contec_stream.bin"
try:
    with open(filepath, "rb") as f:
        stream = f.read()
except Exception as e:
    print(f"Error: {e}")
    sys.exit(1)

print(f"Loaded raw stream of {len(stream)} bytes")

# We will scan the stream and feed packets into the parser
# Since we know the packets start with 0x46 at index + 3, let's scan.
i = 0
packet_count = 0
parsed_count = 0
last_vitals = None

while i < len(stream) - 4:
    b0, b1, b2, b3 = stream[i], stream[i+1], stream[i+2], stream[i+3]
    if b3 == 0x46:
        pkt_len = b0 | (b1 << 8)
        if 30 < pkt_len < 1050 and i + pkt_len <= len(stream):
            pkt_data = stream[i:i + pkt_len]
            packet_count += 1
            
            # Feed packet to parser
            vitals = parse_contec_binary_packet(pkt_data, "192.168.100.139")
            if vitals:
                parsed_count += 1
                # Check if fields changed
                v_dict = {k: v for k, v in vitals.model_dump().items() if v is not None and k not in ['device_id', 'patient_id', 'timestamp', 'ip_address', 'present_fields']}
                if v_dict and v_dict != last_vitals:
                    print(f"Index {i} (len={pkt_len}) -> Vitals: {v_dict}")
                    last_vitals = v_dict
            i += max(pkt_len, 4)
        else:
            i += 1
    else:
        i += 1

print(f"\nDone. Scanned {packet_count} packets, successfully parsed {parsed_count} packets.")