from __future__ import annotations

from ...commands import CommandSpec, bash
from ...config import settings


def build_system_task(job_type: str, params: dict, conda_env: str) -> CommandSpec | None:
    if job_type == "system.backup":
        return CommandSpec(bash(settings.source_root / "Back_Up.sh"), settings.source_root, "run legacy backup script")
    if job_type == "mock.echo":
        message = params.get("message", "Seg Data Server mock job")
        return CommandSpec(["python", "-c", f"print({message!r})"], settings.project_root, "test job runner")
    return None