# save as test_dawdreamer.py
import dawdreamer as daw
from scipy.io import wavfile
import numpy as np

# Basic setup
SAMPLE_RATE = 44100
BUFFER_SIZE = 512

# Create render engine
engine = daw.RenderEngine(SAMPLE_RATE, BUFFER_SIZE)
engine.set_bpm(120.0)

print("DawDreamer installed successfully!")
print(f"Sample rate: {SAMPLE_RATE}")
print(f"Buffer size: {BUFFER_SIZE}")

# Test with built-in synthesis (no VST needed)
faust_processor = engine.make_faust_processor("synth")
faust_processor.set_dsp_string("""
declare name "TestSine";
freq = 440;
gain = 0.1;
process = freq : os.osc : _*gain <: si.bus(2);
""")

# Set up processing graph
engine.load_graph([(faust_processor, [])])

# Render 2 seconds
engine.render(2.0)

# Get audio and save
audio = engine.get_audio()  # shaped (2, N samples)
wavfile.write("test_outputs/test_output.wav", SAMPLE_RATE, audio.transpose())

print("Generated test_output.wav - a 2-second 440Hz sine wave")