import numpy as np
import time

# For SDR hardware interface
try:
    from rtlsdr import RtlSdr  # example SDR
except ImportError:
    print("SDR library not installed; replace with SoapySDR or actual DAC API.")

# -------------------------------
# HDGL Lattice Parameters
# -------------------------------
num_strands = 8
slots_per_strand = 4
total_slots = num_strands * slots_per_strand

phi = 1.6180339887
sqrt_phi = np.sqrt(phi)

# Ω scaling
n_base = np.arange(1,num_strands+1)
omega = 1 / (phi**n_base)**7

# Initialize lattice analogs D1-D32
lattice = np.random.uniform(0.5, 1.0, (num_strands, slots_per_strand))

# Phase offsets
phases = np.random.uniform(0, 2*np.pi, (num_strands, slots_per_strand))

# -------------------------------
# RF Output Parameters
# -------------------------------
fs = 1_000_000       # 1 MHz sampling rate for SDR (adjust per hardware)
block_size = 4096    # samples per update
t = np.arange(block_size) / fs

# Carrier base frequencies (one per strand)
base_freqs = np.linspace(100e3, 400e3, num_strands)  # 100–400 kHz example

# -------------------------------
# Generate lattice-modulated RF block
# -------------------------------
def generate_rf_block():
    global lattice, phases
    lattice_new = np.copy(lattice)
    
    # Update lattice
    for s in range(num_strands):
        for i in range(slots_per_strand):
            lattice_new[s,i] += 0.02 * omega[s] * (1 + 0.05*i)
            resonance = np.sum([omega[j]*lattice[j,i] for j in range(num_strands) if j != s])
            lattice_new[s,i] += 0.01 * resonance
            if lattice_new[s,i] > sqrt_phi:
                lattice_new[s,i] = lattice_new[s,i]
            else:
                lattice_new[s,i] *= 0.8
            phases[s,i] += 0.05 * lattice[s,i]
    lattice[:] = lattice_new

    # Generate multi-carrier RF block
    rf_block = np.zeros(block_size, dtype=np.complex64)
    for s in range(num_strands):
        carrier = np.exp(1j*(2*np.pi*base_freqs[s]*t + np.mean(phases[s])))
        amp = np.mean(lattice[s])/np.max(lattice)
        rf_block += amp * carrier

    # Normalize
    rf_block /= np.max(np.abs(rf_block))
    return rf_block

# -------------------------------
# SDR / DAC Streaming Loop
# -------------------------------
try:
    # Example with placeholder SDR: replace with actual SDR/DAC streaming API
    print("HDGL lattice RF streaming. Press Ctrl+C to stop.")
    while True:
        block = generate_rf_block()
        # sdr.write_samples(block)  # send to hardware
        time.sleep(block_size/fs)
except KeyboardInterrupt:
    print("Streaming stopped.")
