Sergey Vanyushkin
b1878e470f
- Add custom error pages (404, 403, 500) with user-friendly messages
- Add flash message system with signed cookies for security
- Add toast notifications with auto-dismiss and manual close
- Add comprehensive SEO meta tags (description, keywords, OG, Twitter)
- Add canonical URLs for SEO
- Update routes to use slug-based URLs (/posts/{slug} instead of /posts/{id})
- Add Open Graph and Twitter Card meta tags for social sharing
- Add favicon SVG
- Update all templates with proper meta tags and URLs
- Add error handlers registration in main.py
- Add flash middleware for request handling
- Install itsdangerous dependency
140 lines
3.7 KiB
Python
140 lines
3.7 KiB
Python
"""Application entry point with DDD architecture.
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This module is the main entry point for the FastAPI application.
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Configures DI container, middleware, and routes following DDD principles.
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"""
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from collections.abc import AsyncGenerator
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from contextlib import asynccontextmanager
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import uvicorn
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from dishka import make_async_container
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from dishka.integrations.fastapi import setup_dishka
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from fastapi import FastAPI
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from fastapi.middleware.cors import CORSMiddleware
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from fastapi.responses import HTMLResponse
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from fastapi.staticfiles import StaticFiles
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from app.infrastructure import close_db, init_db, register_exception_handlers, settings
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from app.infrastructure.di.providers import (
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DatabaseProvider,
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KeycloakProvider,
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RepositoryProvider,
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TransactionManagerProvider,
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UseCaseProvider,
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)
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from app.presentation import router
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from app.presentation.web import auth_router
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from app.presentation.web import router as web_router
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from app.presentation.web.error_handlers import register_error_handlers
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from app.presentation.web.flash import setup_flash_manager
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@asynccontextmanager
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async def lifespan(app: FastAPI) -> AsyncGenerator[None]:
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"""Application lifespan manager.
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Handles startup and shutdown tasks for the application.
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Args:
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app: FastAPI application instance.
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Yields:
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None during application runtime.
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"""
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await init_db()
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yield
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await close_db()
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def app_factory() -> FastAPI:
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"""Create and configure FastAPI application.
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Sets up DI container, exception handlers, middleware, and routes.
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Returns:
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Configured FastAPI application instance.
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"""
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app = FastAPI(
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title=settings.app.name,
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debug=settings.app.debug,
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lifespan=lifespan,
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docs_url="/docs" if settings.is_dev else None,
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redoc_url="/redoc" if settings.is_dev else None,
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)
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container = make_async_container(
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DatabaseProvider(),
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RepositoryProvider(),
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TransactionManagerProvider(),
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UseCaseProvider(),
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KeycloakProvider(),
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)
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setup_dishka(container, app)
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register_exception_handlers(app)
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register_error_handlers(app)
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@app.middleware("http")
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async def flash_middleware(request, call_next):
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"""Middleware to setup flash manager for each request."""
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await setup_flash_manager(request)
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response = await call_next(request)
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return response
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app.add_middleware(
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CORSMiddleware,
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allow_origins=["*"],
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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app.include_router(router, prefix="/api")
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app.include_router(web_router)
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app.include_router(auth_router)
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app.mount("/static", StaticFiles(directory="static"), name="static")
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@app.get("/", response_class=HTMLResponse)
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async def root_redirect() -> HTMLResponse:
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"""Redirect root URL to web UI.
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Returns:
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HTMLResponse with redirect to web interface.
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"""
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return HTMLResponse(
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content='<meta http-equiv="refresh" content="0;url=/web/">', status_code=200
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)
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@app.get("/health", tags=["health"])
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async def health_check() -> dict[str, str]:
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"""Health check endpoint.
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Returns:
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Status information dictionary.
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"""
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return {
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"status": "ok",
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"app": settings.app.name,
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"env": settings.environment.value,
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}
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return app
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def main() -> None:
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"""Run the application.
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Starts uvicorn server with application factory.
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"""
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uvicorn.run(
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app_factory,
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factory=True,
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host=settings.app.host,
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port=settings.app.port,
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)
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if __name__ == "__main__":
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main()
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