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"""Alternative entry point for local development.
NOTE: HuggingFace Spaces Docker deployment uses `python -m stroke_deepisles_demo.ui.app`
(see Dockerfile CMD). This file is for local development convenience only.
For HF Spaces deployment, see: src/stroke_deepisles_demo/ui/app.py
"""
from pathlib import Path
import gradio as gr
# CRITICAL: Allow direct file serving for local assets (niivue.js)
# Must be called BEFORE creating any Blocks
_ASSETS_DIR = Path(__file__).parent / "src" / "stroke_deepisles_demo" / "ui" / "assets"
gr.set_static_paths(paths=[str(_ASSETS_DIR)])
from stroke_deepisles_demo.core.config import get_settings # noqa: E402
from stroke_deepisles_demo.core.logging import get_logger, setup_logging # noqa: E402
from stroke_deepisles_demo.ui.app import get_demo # noqa: E402
from stroke_deepisles_demo.ui.viewer import get_niivue_head_html # noqa: E402
logger = get_logger(__name__)
# Initialize logging
settings = get_settings()
setup_logging(settings.log_level, format_style=settings.log_format)
# Create the demo instance at module level for Gradio
demo = get_demo()
if __name__ == "__main__":
# Log startup info for debugging
logger.info("=" * 60)
logger.info("STARTUP: stroke-deepisles-demo (root app.py)")
logger.info("Assets directory: %s", _ASSETS_DIR.resolve())
logger.info("Assets exists: %s", _ASSETS_DIR.exists())
logger.info("=" * 60)
# CRITICAL FIX (Issue #24): Load NiiVue via head= parameter
#
# The head= parameter injects a <script type="module"> into <head> that loads
# NiiVue BEFORE Gradio's Svelte app hydrates. This is critical because:
#
# 1. Dynamic import() inside js_on_load blocks Svelte hydration on HF Spaces
# 2. head= scripts run BEFORE Gradio mounts, so failures don't block the app
# 3. js_on_load then just USES window.Niivue (no imports)
#
# Evidence: A/B test in docs/specs/24-bug-hf-spaces-loading-forever.md showed
# disabling js_on_load makes the app load. The fix is head= for loading.
demo.launch(
server_name=settings.gradio_server_name,
server_port=settings.gradio_server_port,
share=settings.gradio_share,
theme=gr.themes.Soft(),
css="footer {visibility: hidden}",
head=get_niivue_head_html(), # Load NiiVue before Gradio hydrates
allowed_paths=[str(_ASSETS_DIR)],
)
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