"""FastAPI application factory for SneakySwole.

Creates and configures the FastAPI app with routes, templates,
static files, and structured logging.
"""

from pathlib import Path

import structlog
from fastapi import FastAPI
from fastapi.staticfiles import StaticFiles
from fastapi.templating import Jinja2Templates

from app.config import get_settings
from app.logging_config import setup_logging
from app.routes.health import router as health_router
from app.routes.pages import router as pages_router

logger = structlog.get_logger(__name__)

# Template and static file directories
_BASE_DIR = Path(__file__).resolve().parent
TEMPLATES_DIR = _BASE_DIR / "templates"
STATIC_DIR = _BASE_DIR / "static"


def create_app() -> FastAPI:
    """Create and configure the FastAPI application.

    Returns:
        A fully configured FastAPI application instance.
    """
    settings = get_settings()
    setup_logging(log_level=settings.app_log_level)

    app = FastAPI(
        title="SneakySwole",
        description="Open-source workout tracking and programming",
        version="0.1.0",
    )

    # Mount static files
    app.mount("/static", StaticFiles(directory=str(STATIC_DIR)), name="static")

    # Jinja2 templates (available to routes via request.state or dependency)
    templates = Jinja2Templates(directory=str(TEMPLATES_DIR))
    app.state.templates = templates

    # Register route modules
    app.include_router(health_router)
    app.include_router(pages_router)

    logger.info("app_started", environment=settings.app_env)

    return app


# Uvicorn entry point
app = create_app()