"""Unit: agent `author` identity -> bottle.git_user (PRD
0082).

Identity moved off `git-gate.user` (bottle) onto the trusted agent's
`author` block. At `load_for_agent` the agent's author populates the
effective bottle's `git_user` (a `ManifestGitUser`). This locks the
`author` validation/rejection paths and the bottle `git-gate.user`
migration die."""

import unittest

from bot_bottle.manifest import ManifestError, ManifestGitUser, ManifestIndex


def _error_message(callable_, *args, **kwargs) -> str:  # type: ignore
    """Run `callable_` expecting a ManifestError; return its message."""
    try:
        callable_(*args, **kwargs)
    except ManifestError as e:
        return str(e)
    raise AssertionError("expected ManifestError was not raised")


def _manifest(author):  # type: ignore
    """Build an index with one agent 'demo' carrying the given `author`
    block, then load it, returning the composed Manifest."""
    agent: dict = {"skills": [], "prompt": "", "bottle": "dev"}  # type: ignore
    if author is not None:
        agent["author"] = author
    return ManifestIndex.from_json_obj({
        "bottles": {"dev": {}},
        "agents": {"demo": agent},
    }).load_for_agent("demo")


class TestAuthorIdentity(unittest.TestCase):
    """The agent's `author` block populates bottle.git_user."""

    def test_parses_both_fields(self):
        m = _manifest({
            "name": "Eric Bauerfeld",
            "email": "eric+claude@dideric.is",
        })
        u = m.bottle.git_user
        self.assertEqual("Eric Bauerfeld", u.name)
        self.assertEqual("eric+claude@dideric.is", u.email)
        self.assertFalse(u.is_empty())

    def test_omitted_author_defaults_to_empty(self):
        # No author block at all -> empty git_user, is_empty True ->
        # provisioner skips the `git config` step entirely.
        m = _manifest(None)
        self.assertTrue(m.bottle.git_user.is_empty())

    def test_missing_name_dies(self):
        # `author` is present but name is absent -> both fields required.
        msg = _error_message(_manifest, {"email": "bot@example.com"})
        self.assertIn("author.name must be a non-empty string", msg)

    def test_missing_email_dies(self):
        msg = _error_message(_manifest, {"name": "Bot"})
        self.assertIn("author.email must be a non-empty string", msg)

    def test_both_empty_strings_dies(self):
        # An explicit `author: {name: "", email: ""}` is a typo /
        # half-finished edit; fail loudly rather than silently no-op.
        msg = _error_message(_manifest, {"name": "", "email": ""})
        self.assertIn("author.name must be a non-empty string", msg)

    def test_unknown_key_dies(self):
        msg = _error_message(
            _manifest,
            {"name": "Bot", "email": "b@x", "username": "bot"},
        )
        self.assertIn("unknown key", msg)
        self.assertIn("username", msg)

    def test_non_string_name_dies(self):
        msg = _error_message(_manifest, {"name": 42, "email": "b@x"})
        self.assertIn("author.name must be a non-empty string", msg)

    def test_non_string_email_dies(self):
        msg = _error_message(_manifest, {"name": "Bot", "email": ["x@y.z"]})
        self.assertIn("author.email must be a non-empty string", msg)

    def test_email_with_whitespace_dies(self):
        msg = _error_message(_manifest, {"name": "Bot", "email": "a @b"})
        self.assertIn("author.email must not contain whitespace", msg)


class TestBottleGitGateUserMigration(unittest.TestCase):
    """`git-gate.user` on a bottle is no longer supported: it raises a
    ManifestError pointing at the agent's `author` block."""

    def test_bottle_git_gate_user_dies(self):
        msg = _error_message(
            ManifestIndex.from_json_obj,
            {
                "bottles": {"dev": {"git-gate": {"user": {"name": "Bot"}}}},
                "agents": {"demo": {"skills": [], "prompt": "", "bottle": "dev"}},
            },
        )
        self.assertIn("git-gate.user is no longer supported", msg)
        self.assertIn("author", msg)


class TestGitUserDirect(unittest.TestCase):
    """Direct GitUser dataclass exercises (no manifest wrapper). The
    dataclass is still the runtime carrier on ManifestBottle.git_user."""

    def test_is_empty_default(self):
        self.assertTrue(ManifestGitUser().is_empty())

    def test_is_empty_false_when_name_set(self):
        self.assertFalse(ManifestGitUser(name="x").is_empty())

    def test_is_empty_false_when_email_set(self):
        self.assertFalse(ManifestGitUser(email="x@y").is_empty())


if __name__ == "__main__":
    unittest.main()