import os
import sys
import subprocess
import time
from huggingface_hub import snapshot_download

MODEL_REPO = "tencent/HunyuanVideo-Avatar"
BASE_DIR = os.getcwd()  # current working directory absolute path
WEIGHTS_DIR = os.path.join(BASE_DIR, "weights")

CHECKPOINT_FILE = os.path.join(
    WEIGHTS_DIR,
    "ckpts",
    "hunyuan-video-t2v-720p",
    "transformers",
    "mp_rank_00_model_states.pt"
)

def download_model():
    print("⬇️ Model not found. Downloading with snapshot_download into weights directory...")
    os.makedirs(WEIGHTS_DIR, exist_ok=True)

    snapshot_download(
        repo_id=MODEL_REPO,
        local_dir=WEIGHTS_DIR,
        local_dir_use_symlinks=False
    )

    if not os.path.isfile(CHECKPOINT_FILE):
        print(f"❌ Checkpoint file not found at {CHECKPOINT_FILE} after download.")
        sys.exit(1)

    print("✅ Model downloaded successfully.")

def run_flask_audio():
    print("🚀 Starting flask_audio.py...")
    cmd = [
        "torchrun",
        "--nnodes=1",
        "--nproc_per_node=8",
        "--master_port=29605",
        "hymm_gradio/flask_audio.py",
        "--input", "assets/test.csv",
        "--ckpt", CHECKPOINT_FILE,
        "--sample-n-frames", "129",
        "--seed", "128",
        "--image-size", "704",
        "--cfg-scale", "7.5",
        "--infer-steps", "50",
        "--use-deepcache", "1",
        "--flow-shift-eval-video", "5.0"
    ]
    proc = subprocess.Popen(cmd)
    return proc

def run_gradio_ui():
    print("🟢 Starting gradio_audio.py UI...")
    cmd = ["python3", "hymm_gradio/gradio_audio.py"]
    proc = subprocess.Popen(cmd)
    return proc

def main():
    if os.path.isfile(CHECKPOINT_FILE):
        print("✅ Model checkpoint already exists. Skipping download.")
    else:
        download_model()

    flask_proc = run_flask_audio()
    time.sleep(5)  # Wait a bit for flask_audio.py to start
    gradio_proc = run_gradio_ui()

if __name__ == "__main__":
    main()