"""
Snare Scout API - Minimal Gradio
"""

import os
import sys
import gradio as gr

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

# Download PANNs checkpoint to current directory
PANNS_CHECKPOINT = "Cnn14_mAP=0.431.pth"

if not os.path.exists(PANNS_CHECKPOINT):
    print("📥 Downloading PANNs checkpoint (~320MB)...")
    import urllib.request
    urllib.request.urlretrieve(
        "https://zenodo.org/record/3987831/files/Cnn14_mAP%3D0.431.pth?download=1",
        PANNS_CHECKPOINT
    )
    print(f"✅ PANNs checkpoint ready! Size: {os.path.getsize(PANNS_CHECKPOINT)}")
else:
    print(f"✅ PANNs checkpoint exists: {os.path.getsize(PANNS_CHECKPOINT)} bytes")

# Also copy to where panns_inference might look
os.makedirs("/root/panns_data", exist_ok=True)
if not os.path.exists("/root/panns_data/Cnn14_mAP=0.431.pth"):
    import shutil
    shutil.copy(PANNS_CHECKPOINT, "/root/panns_data/Cnn14_mAP=0.431.pth")
    print("✅ Copied to /root/panns_data/")

DB_PATH = "library/snare_scout.sqlite"
if not os.path.exists(DB_PATH):
    import requests
    os.makedirs("library", exist_ok=True)
    print("📥 Downloading database...")
    url = "https://www.dropbox.com/scl/fi/x6ybzdfak4m6q30k3xkec/snare_scout.sqlite?rlkey=cku45y0c7q06hf7y0ca0ktv3e&dl=1"
    response = requests.get(url, stream=True)
    with open(DB_PATH, 'wb') as f:
        for chunk in response.iter_content(chunk_size=8192):
            f.write(chunk)
    print("✅ Database ready!")

import scout
scout.DEFAULT_DB_PATH = DB_PATH

print("🔄 Loading AI models...")
embedder = scout.get_embedder()
print("🔄 Loading library...")
lib = scout.load_library_matrices(DB_PATH, False)
print(f"✅ Ready! {len(lib['ids'])} clips loaded")


def search(audio_file):
    print(f"[API] Got request: {audio_file}")
    
    if audio_file is None:
        return "No audio uploaded"
    
    try:
        with open(audio_file, 'rb') as f:
            audio_bytes = f.read()
        
        print(f"[API] Audio size: {len(audio_bytes)} bytes")
        
        results = scout.search_library(
            embedder, audio_bytes, lib, 
            top_k=10, debug=True, db_path=DB_PATH
        )
        
        print(f"[API] Found {len(results)} results")
        
        lines = []
        for r in results:
            lines.append(f"{r['id']}|{r['url']}|{r['t0']}|{r['title']}")
        
        return "\n".join(lines) if lines else "No matches found"
        
    except Exception as e:
        print(f"[API] ERROR: {e}")
        import traceback
        traceback.print_exc()
        return f"Error: {e}"


demo = gr.Interface(
    fn=search,
    inputs=gr.Audio(type="filepath"),
    outputs=gr.Textbox(),
    title="Snare Scout"
)

demo.launch(server_name="0.0.0.0", server_port=7860)