from collections.abc import Generator, Iterable
from typing import Any

from fansifter_common.adapters.sendgrid.exceptions import SendGridClientError


def batch_iterable(
    iterable: Iterable[Any], batch_size: int
) -> Generator[tuple[list[Any], int]]:
    batch: list[Any] = []
    start_index = 0
    for index, item in enumerate(iterable):
        if len(batch) == 0:
            start_index = index
        batch.append(item)
        if len(batch) == batch_size:
            yield batch, start_index
            batch = []
    if batch:
        yield batch, start_index


def get_sendgrid_error_log_msg(exc: SendGridClientError) -> str:
    if exc.response_obj and exc.response_obj.errors:
        error = exc.response_obj.errors[0]
        if error.field:
            return f"SendGridClientError: `{error.field}` {error.message}"
        return f"SendGridClientError: {error.message}"
    return exc.log_msg