tcl-filtrage/main.py

56 lines
1.7 KiB
Python

import enum
from typing import Any, DefaultDict, List, Optional
import httpx
from fastapi import FastAPI, HTTPException
from fastapi.params import Header, Path
from pydantic import BaseModel
app = FastAPI()
class Passage(BaseModel):
ligne: str
delais: List[str]
class Passages(BaseModel):
passages: List[Passage]
stop_id: int
@app.get("/stop/{stop_id}", response_model=Passages)
async def stop(
stop_id: int = Path(
None,
description="Stop id to monitor. Can be obtained using https://data.grandlyon.com/jeux-de-donnees/points-arret-reseau-transports-commun-lyonnais/donnees",
),
authorization: Optional[str] = Header(
None,
alias="Authorization",
description="Basic auth for remote API (data grand lyon)",
),
):
if authorization is None:
raise HTTPException(status_code=401, detail="Not authenticated")
headers = {"Authorization": authorization}
async with httpx.AsyncClient(headers=headers) as client:
res = await client.get(
"https://download.data.grandlyon.com/ws/rdata/tcl_sytral.tclpassagearret/all.json?maxfeatures=-1"
)
if res.status_code != 200:
raise HTTPException(
status_code=res.status_code,
detail="HTTP error during call to remote API",
)
passages = DefaultDict(list)
for passage in res.json().get("values"):
if passage.get("id") == stop_id:
passages[passage.get("ligne")].append(passage.get("delaipassage"))
passages_list = []
for ligne, delais in passages.items():
passages_list.append(Passage(ligne=ligne, delais=delais))
return Passages(passages=passages_list, stop_id=stop_id)