"""Fetch records from an OData v4 JSON endpoint, following pagination."""

import httpx


async def fetch(
    url: str,
    username: str | None = None,
    password: str | None = None,
) -> list[dict]:
    auth = (username, password) if username and password else None
    records: list[dict] = []
    next_url: str | None = url

    headers= {"Accept": "application/json" }
    async with httpx.AsyncClient(timeout=30.0) as client:
        while next_url:
            response = await client.get(next_url, auth=auth, headers=headers)
            response.raise_for_status()
            body = response.json()
            records.extend(body.get("value", []))
            next_url = body.get("@odata.nextLink")

    return records