"""Tests for hermes_cli.dump._get_git_commit — git SHA resolution for ``hermes dump``.

``hermes dump`` prints the running commit so support bug reports identify the
exact version. Source installs resolve it live via git; packaged builds
(Docker, Nix) use the install stamp. Both paths go through
``version_info.get_version_info()``.

These tests cover both paths plus the failure modes (no stamp, no git).
"""

from unittest.mock import MagicMock, patch

from hermes_cli.version_info import VersionInfo, _reset_version_info_cache


def setup_function():
    _reset_version_info_cache()


def test_get_git_commit_uses_live_git_when_available(tmp_path):
    """Source install: version_info resolves commit from live git."""
    from hermes_cli import dump

    repo_dir = tmp_path / "repo"
    repo_dir.mkdir()

    with patch("hermes_cli.version_info._resolve_stamp_file", lambda: None), \
         patch("hermes_cli.version_info._resolve_repo_dir", lambda: repo_dir), \
         patch("hermes_cli.version_info._git_version_info",
               return_value=VersionInfo("0.19.0", "0.19.0+3", 3, "deadbeef" * 5, "main", "git")):
        commit = dump._get_git_commit(repo_dir)

    assert commit == "deadbeef"


def test_get_git_commit_uses_stamp_when_no_git(tmp_path):
    """Docker/Nix: version_info resolves commit from the install stamp."""
    from hermes_cli import dump

    repo_dir = tmp_path / "no-git-here"
    repo_dir.mkdir()

    with patch("hermes_cli.version_info._resolve_stamp_file", lambda: tmp_path / "stamp.json"), \
         patch("hermes_cli.version_info._resolve_repo_dir", lambda: None), \
         patch("hermes_cli.version_info._stamp_version_info",
               return_value=VersionInfo("0.19.0", "0.19.0", None, "cafef00d" * 5, None, "docker")):
        commit = dump._get_git_commit(repo_dir)

    assert commit == "cafef00d"


def test_get_git_commit_returns_unknown_when_neither_source_available(tmp_path):
    """Pip-installed wheel: no stamp, no git → '(unknown)'."""
    from hermes_cli import dump

    repo_dir = tmp_path / "repo"
    repo_dir.mkdir()

    with patch("hermes_cli.version_info._resolve_stamp_file", lambda: None), \
         patch("hermes_cli.version_info._resolve_repo_dir", lambda: None):
        commit = dump._get_git_commit(repo_dir)

    assert commit == "(unknown)"


def test_get_git_commit_output_format_identical_between_sources(tmp_path):
    """Regression guard: live-git and stamp outputs share the same shape."""
    from hermes_cli import dump

    repo_dir = tmp_path / "repo"
    repo_dir.mkdir()

    # Live-git path.
    with patch("hermes_cli.version_info._resolve_stamp_file", lambda: None), \
         patch("hermes_cli.version_info._resolve_repo_dir", lambda: repo_dir), \
         patch("hermes_cli.version_info._git_version_info",
               return_value=VersionInfo("0.19.0", "0.19.0+3", 3, "b2f477a3" * 5, "main", "git")):
        _reset_version_info_cache()
        live = dump._get_git_commit(repo_dir)

    # Stamp path.
    with patch("hermes_cli.version_info._resolve_stamp_file", lambda: tmp_path / "stamp.json"), \
         patch("hermes_cli.version_info._resolve_repo_dir", lambda: None), \
         patch("hermes_cli.version_info._stamp_version_info",
               return_value=VersionInfo("0.19.0", "0.19.0", None, "b2f477a3" * 5, None, "docker")):
        _reset_version_info_cache()
        baked = dump._get_git_commit(repo_dir)

    assert live == baked == "b2f477a3"
    assert len(live) == 8
    assert all(c in "0123456789abcdef" for c in live)


def test_get_git_commit_date_uses_version_info(tmp_path):
    """Source install: version_info carries the commit date from live git."""
    from hermes_cli import dump

    repo_dir = tmp_path / "repo"
    repo_dir.mkdir()

    with patch("hermes_cli.version_info._resolve_stamp_file", lambda: None), \
         patch("hermes_cli.version_info._resolve_repo_dir", lambda: repo_dir), \
         patch("hermes_cli.version_info._git_version_info",
               return_value=VersionInfo("0.19.0", "0.19.0+3", 3, "deadbeef" * 5, "main", "git", False, 1718662620)):
        _reset_version_info_cache()
        date = dump._get_git_commit_date(repo_dir)

    assert date == "2024-06-17"


def test_get_git_commit_date_empty_when_unknown(tmp_path):
    """Docker/pip: no git, no stamp → '' so the dump line drops the date."""
    from hermes_cli import dump

    repo_dir = tmp_path / "no-git-here"
    repo_dir.mkdir()

    with patch("hermes_cli.version_info._resolve_stamp_file", lambda: None), \
         patch("hermes_cli.version_info._resolve_repo_dir", lambda: None):
        _reset_version_info_cache()
        date = dump._get_git_commit_date(repo_dir)

    assert date == ""