"""
BAN YARO — FastAPI Hauptanwendung
"""

import os
import logging
from fastapi import FastAPI, Request
from fastapi.staticfiles import StaticFiles
from fastapi.responses import FileResponse, JSONResponse
from contextlib import asynccontextmanager

from database import init_db
import ki
import scheduler as sched

logging.basicConfig(
    level   = logging.INFO,
    format  = "%(asctime)s [%(levelname)s] %(name)s: %(message)s",
)
logger = logging.getLogger(__name__)


# ------------------------------------------------------------------
# Startup / Shutdown
# ------------------------------------------------------------------
@asynccontextmanager
async def lifespan(app: FastAPI):
    logger.info("Ban Yaro startet...")
    init_db()
    logger.info(f"KI-Modus: {ki.KI_MODE}")
    sched.start()
    yield
    sched.stop()
    logger.info("Ban Yaro beendet.")


# ------------------------------------------------------------------
# App
# ------------------------------------------------------------------
app = FastAPI(
    title       = "Ban Yaro API",
    version     = "0.1.0",
    lifespan    = lifespan,
    docs_url    = "/api/docs" if os.getenv("ENV") != "production" else None,
    redoc_url   = None,
)


# ------------------------------------------------------------------
# API-Router registrieren (werden nach und nach hinzugefügt)
# ------------------------------------------------------------------
from routes.auth       import router as auth_router
from routes.dogs       import router as dogs_router
from routes.diary      import router as diary_router
from routes.health     import router as health_router
from routes.poison     import router as poison_router
from routes.push       import router as push_router
from routes.ki         import router as ki_router
from routes.tieraerzte import router as tieraerzte_router
from routes.places     import router as places_router
from routes.routen     import router as routen_router

app.include_router(auth_router,       prefix="/api/auth",       tags=["Auth"])
app.include_router(dogs_router,       prefix="/api/dogs",       tags=["Hunde"])
app.include_router(diary_router,      prefix="/api/dogs",       tags=["Tagebuch"])
app.include_router(health_router,     prefix="/api/dogs",       tags=["Gesundheit"])
app.include_router(poison_router,     prefix="/api/poison",     tags=["Giftköder"])
app.include_router(push_router,       prefix="/api/push",       tags=["Push"])
app.include_router(ki_router,         prefix="/api/ki",         tags=["KI"])
app.include_router(tieraerzte_router, prefix="/api/tieraerzte", tags=["Tierärzte"])
app.include_router(places_router,     prefix="/api/places",     tags=["Orte"])
app.include_router(routen_router,     prefix="/api/routes",     tags=["Routen"])


# ------------------------------------------------------------------
# Fehlerbehandlung — einheitliches JSON-Format
# ------------------------------------------------------------------
@app.exception_handler(Exception)
async def global_exception_handler(request: Request, exc: Exception):
    logger.error(f"Unbehandelter Fehler: {exc}", exc_info=True)
    return JSONResponse(
        status_code=500,
        content={"detail": "Interner Serverfehler."}
    )


# ------------------------------------------------------------------
# Statische Dateien + SPA-Fallback
# ------------------------------------------------------------------
STATIC_DIR = os.path.join(os.path.dirname(__file__), "static")

app.mount("/css",   StaticFiles(directory=f"{STATIC_DIR}/css"),   name="css")
app.mount("/js",    StaticFiles(directory=f"{STATIC_DIR}/js"),     name="js")
app.mount("/icons", StaticFiles(directory=f"{STATIC_DIR}/icons"),  name="icons")

# User-generierte Medien (Fotos aus Tagebuch, Giftköder-Alarm, etc.)
MEDIA_DIR = os.getenv("MEDIA_DIR", "/data/media")
os.makedirs(MEDIA_DIR, exist_ok=True)
app.mount("/media", StaticFiles(directory=MEDIA_DIR), name="media")

@app.get("/favicon.ico")
async def favicon():
    return FileResponse(f"{STATIC_DIR}/icons/favicon.ico")

@app.get("/manifest.json")
async def manifest():
    return FileResponse(f"{STATIC_DIR}/manifest.json")

@app.get("/sw.js")
async def service_worker():
    return FileResponse(
        f"{STATIC_DIR}/sw.js",
        headers={"Cache-Control": "no-cache, no-store, must-revalidate"}
    )

# Web Share Target
@app.post("/share")
async def share_target(request: Request):
    # Empfängt geteilte Inhalte vom Handy (Fotos, Links, Text)
    # Weiterleitung zur App mit den Daten
    return FileResponse(
        f"{STATIC_DIR}/index.html",
        headers={"Cache-Control": "no-cache"}
    )

# SPA Fallback — ALLE nicht-API-Routen gehen zur index.html
@app.get("/{full_path:path}")
async def spa_fallback(full_path: str):
    return FileResponse(
        f"{STATIC_DIR}/index.html",
        headers={"Cache-Control": "no-cache"}
    )