"""Tests for hermes_cli/bundles.py — the `hermes bundles` CLI subcommand."""

import argparse
import sys
from pathlib import Path

import pytest

from hermes_cli.bundles import (
    bundles_command,
    register_cli,
)


@pytest.fixture
def bundles_env(tmp_path, monkeypatch):
    bundles_dir = tmp_path / "skill-bundles"
    monkeypatch.setenv("HERMES_BUNDLES_DIR", str(bundles_dir))
    # Reset module-level cache between tests.
    import agent.skill_bundles as mod
    mod._bundles_cache = {}
    mod._bundles_cache_mtime = None
    return bundles_dir


def _parse(argv):
    parser = argparse.ArgumentParser()
    register_cli(parser)
    return parser.parse_args(argv)


class TestBundlesCli:
    def test_create_and_list(self, bundles_env, capsys):
        args = _parse(["create", "my-bundle", "--skill", "a", "--skill", "b", "-d", "desc"])
        bundles_command(args)
        out = capsys.readouterr().out
        assert "Created bundle" in out
        # File should exist
        assert (bundles_env / "my-bundle.yaml").exists()

        args = _parse(["list"])
        bundles_command(args)
        out = capsys.readouterr().out
        assert "my-bundle" in out

    def test_show(self, bundles_env, capsys):
        bundles_command(_parse(["create", "x", "--skill", "s1", "--skill", "s2"]))
        capsys.readouterr()  # clear
        bundles_command(_parse(["show", "x"]))
        out = capsys.readouterr().out
        assert "/x" in out
        assert "s1" in out
        assert "s2" in out

    def test_delete(self, bundles_env, capsys):
        bundles_command(_parse(["create", "doomed", "--skill", "s1"]))
        capsys.readouterr()
        bundles_command(_parse(["delete", "doomed"]))
        out = capsys.readouterr().out
        assert "Deleted bundle" in out
        assert not (bundles_env / "doomed.yaml").exists()

    def test_create_refuses_overwrite(self, bundles_env, capsys):
        bundles_command(_parse(["create", "dup", "--skill", "s1"]))
        capsys.readouterr()
        with pytest.raises(SystemExit) as ei:
            bundles_command(_parse(["create", "dup", "--skill", "s2"]))
        assert ei.value.code == 1
        out = capsys.readouterr().out
        assert "already exists" in out.lower() or "--force" in out.lower()

    def test_create_force_overwrites(self, bundles_env, capsys):
        bundles_command(_parse(["create", "dup", "--skill", "s1"]))
        capsys.readouterr()
        bundles_command(_parse(["create", "dup", "--skill", "s2", "--force"]))
        out = capsys.readouterr().out
        assert "Created bundle" in out

    def test_create_requires_skills(self, bundles_env, capsys, monkeypatch):
        # Simulate user pressing Ctrl-D immediately at the interactive prompt.
        monkeypatch.setattr("builtins.input", lambda *_a, **_kw: (_ for _ in ()).throw(EOFError()))
        with pytest.raises(SystemExit):
            bundles_command(_parse(["create", "empty"]))

    def test_show_missing(self, bundles_env, capsys):
        with pytest.raises(SystemExit) as ei:
            bundles_command(_parse(["show", "ghost"]))
        assert ei.value.code == 1

    def test_reload(self, bundles_env, capsys):
        # Reload on an empty dir reports no changes.
        bundles_command(_parse(["reload"]))
        out = capsys.readouterr().out
        assert "No changes" in out or "0" in out