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"""Serves the Lilac server."""

import logging
import os
import subprocess
from typing import Any

from fastapi import APIRouter, FastAPI
from fastapi.responses import ORJSONResponse
from fastapi.routing import APIRoute
from fastapi.staticfiles import StaticFiles

from . import router_concept, router_data_loader, router_dataset, router_signal, router_tasks
from .config import CONFIG, data_path
from .router_utils import RouteErrorHandler
from .tasks import task_manager

DIST_PATH = os.path.abspath(os.path.join('web', 'blueprint', 'build'))

tags_metadata: list[dict[str, Any]] = [{
  'name': 'datasets',
  'description': 'API for querying a dataset.',
}, {
  'name': 'concepts',
  'description': 'API for managing concepts.',
}, {
  'name': 'data_loaders',
  'description': 'API for loading data.',
}, {
  'name': 'signals',
  'description': 'API for managing signals.',
}]


def custom_generate_unique_id(route: APIRoute) -> str:
  """Generate the name for the API endpoint."""
  return route.name


app = FastAPI(
  default_response_class=ORJSONResponse,
  generate_unique_id_function=custom_generate_unique_id,
  openapi_tags=tags_metadata)

v1_router = APIRouter(route_class=RouteErrorHandler)
v1_router.include_router(router_dataset.router, prefix='/datasets', tags=['datasets'])
v1_router.include_router(router_concept.router, prefix='/concepts', tags=['concepts'])
v1_router.include_router(router_data_loader.router, prefix='/data_loaders', tags=['data_loaders'])
v1_router.include_router(router_signal.router, prefix='/signals', tags=['signals'])
v1_router.include_router(router_tasks.router, prefix='/tasks', tags=['tasks'])

app.include_router(v1_router, prefix='/api/v1')

# Serve static files in production mode.
app.mount('/', StaticFiles(directory=os.path.join(DIST_PATH), html=True, check_dir=False))

print('data_path=', data_path(), CONFIG)
print('list:', os.listdir(data_path()))


def run(cmd: str) -> subprocess.CompletedProcess[bytes]:
  """Run a command and return the result."""
  return subprocess.run(cmd, shell=True, check=True)


@app.on_event('shutdown')
async def shutdown_event() -> None:
  """Kill the task manager when FastAPI shuts down."""
  await task_manager().stop()


class GetTasksFilter(logging.Filter):
  """Task filter for /tasks."""

  def filter(self, record: logging.LogRecord) -> bool:
    """Filters out /api/v1/tasks/ from the logs."""
    return record.getMessage().find('/api/v1/tasks/') == -1


logging.getLogger('uvicorn.access').addFilter(GetTasksFilter())