main.py

# SPDX-License-Identifier: MIT
#
# Copyright (C) 2026 The Breathe Open Source Project
# Copyright (C) 2026 sidharthify <wednisegit@gmail.com>
# Copyright (C) 2026 FlashWreck <theghost3370@gmail.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import asyncio
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from contextlib import asynccontextmanager
from app.api.routes import register_zone_routes
from app.services.fetchers import update_all_zones_background

@asynccontextmanager
async def lifespan(app: FastAPI):
    task = asyncio.create_task(periodic_updates())
    yield
    task.cancel()

async def periodic_updates():
    while True:
        try:
            await update_all_zones_background()
        except asyncio.CancelledError:
            break
        except Exception as e:
            print(f"CRITICAL: Background loop error: {e}")
        
        # Wait 15 minutes
        await asyncio.sleep(900)

app = FastAPI(title="breathe backend", lifespan=lifespan)

app.add_middleware(
    CORSMiddleware,
    allow_origins=[
        "https://breatheoss.app",       
        "https://www.breatheoss.app",   
        "http://localhost:3000",        
        "http://localhost:8080",        
    ],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

register_zone_routes(app)