"""The local trace-upload CLI (training/share_trace.py). Network-free."""
import json

import pytest

from server import trace
from training import share_trace


def _write_trace(tmp_path):
    t = trace.export_run()  # empty-but-valid envelope is fine for these tests
    p = tmp_path / "trace.json"
    return trace.write_trace(t, path=str(p))


def test_dry_run_makes_no_network_call(tmp_path, monkeypatch, capsys):
    path = _write_trace(tmp_path)

    # If the CLI tried to use the Hub in --dry-run, this would raise.
    import huggingface_hub

    def _boom(*a, **k):
        raise AssertionError("HfApi must not be constructed during --dry-run")

    monkeypatch.setattr(huggingface_hub, "HfApi", _boom)

    share_trace.main([path, "--repo", "me/traces", "--dry-run"])
    out = capsys.readouterr().out
    assert "https://huggingface.co/datasets/me/traces" in out
    assert "dry-run" in out


def test_rejects_non_trace_json(tmp_path):
    bad = tmp_path / "bad.json"
    bad.write_text(json.dumps({"hello": "world"}))
    with pytest.raises(SystemExit):
        share_trace.main([str(bad), "--dry-run"])


def test_public_flag_parses(tmp_path):
    path = _write_trace(tmp_path)
    args = share_trace._parse_args([path, "--public"])
    assert args.private is False
    args = share_trace._parse_args([path])
    assert args.private is True  # private by default