# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import sys

import draccus

from lerobot.configs.train import TrainPipelineConfig
from lerobot.policies.act.configuration_act import ACTConfig  # noqa: F401  (registers --policy.type act)
from lerobot.scripts.lerobot_train import _remote_target_in_argv, train


def _set_argv(monkeypatch, *args):
    monkeypatch.setattr(sys, "argv", ["lerobot-train", *args])


def test_remote_target_detected_space_separated(monkeypatch):
    _set_argv(monkeypatch, "--policy.type", "act", "--job.target", "a10g-small")
    assert _remote_target_in_argv() is True


def test_remote_target_detected_equals(monkeypatch):
    _set_argv(monkeypatch, "--job.target=t4-small")
    assert _remote_target_in_argv() is True


def test_local_string_is_not_remote(monkeypatch):
    _set_argv(monkeypatch, "--job.target", "local")
    assert _remote_target_in_argv() is False


def test_no_target_is_not_remote(monkeypatch):
    _set_argv(monkeypatch, "--policy.type", "act")
    assert _remote_target_in_argv() is False


def test_train_dispatches_to_submit_when_remote(monkeypatch):
    """A remote --job.target short-circuits train() to the HF Jobs submitter."""
    import lerobot.jobs

    captured = []
    monkeypatch.setattr(lerobot.jobs, "submit_to_hf", lambda cfg: captured.append(cfg) or "submitted")
    cfg = draccus.parse(
        TrainPipelineConfig,
        args=["--dataset.repo_id", "u/d", "--policy.type", "act", "--job.target", "a10g-small"],
    )
    # Returns the submitter's result and never enters the local training path.
    assert train(cfg) == "submitted"
    assert captured == [cfg]