"""Private chat media locations; no direct storage URLs leave the API."""

from django.conf import settings

from eusrr_backend.protected_media import protected_file_response


def attachment_endpoint(attachment, *, thumbnail=False):
    if not attachment.message_id:
        return None
    suffix = "thumbnail/" if thumbnail else ""
    return (
        f"/api/v1/communications/messages/{attachment.message_id}/"
        f"attachments/{attachment.pk}/{suffix}"
    )


def chat_file_response(file, *, filename, as_attachment=True):
    return protected_file_response(
        file,
        filename=filename,
        storage_directory="chat_attachments",
        internal_prefix="/_protected_chat_attachments/",
        use_x_accel=getattr(settings, "CHAT_ATTACHMENTS_USE_X_ACCEL_REDIRECT", False),
        as_attachment=as_attachment,
    )