#!/usr/bin/env python3
import sys
try:
    import sounddevice as sd
except Exception as e:
    sys.stderr.write("sounddevice is not installed or failed to import. Install with: pip install sounddevice\n")
    raise

ha = sd.query_hostapis()
print("Host APIs:")
for i, h in enumerate(ha):
    print(f"{i}: {h.get('name')}")

print("\nDevices:")
for i, d in enumerate(sd.query_devices()):
    api_idx = d.get('hostapi')
    api = ha[api_idx].get('name') if isinstance(api_idx, int) and 0 <= api_idx < len(ha) else '?'
    name = d.get('name')
    mi = int(d.get('max_input_channels') or 0)
    mo = int(d.get('max_output_channels') or 0)
    sr = int(d.get('default_samplerate') or 0)
    print(f"{i:2d} | in={mi:<2d} out={mo:<2d} sr={sr:<6d} api={api} name={name}")

print("\nHints:")
print("- Pick an INPUT index with in>0 that matches your capture device name (e.g., 'USB Audio Device').")
print("- Pick an OUTPUT index with out>0 that matches your playback device name (e.g., 'USB Audio').")
print("- We will use mono (channels=1). If mono fails, we can fall back to 2 channels.")

print("\nALSA hw: device suggestions for your setup:")
print("- Input  (Shure MVX2U: USB Audio (hw:0,0)) -> use 'hw:0,0'")
print("- Output (USB Audio: - (hw:1,0))         -> use 'hw:1,0'")