import pytest

from proteus.providers import FakeProvider, make_provider, available_providers
from proteus.providers.factory import _REGISTRY


def test_fake_spec_builds_fakeprovider_with_model_name():
    p = make_provider("fake:smoke-1")
    assert isinstance(p, FakeProvider)
    assert p.model_name == "smoke-1"
    # It is usable offline without arguments beyond the spec.
    assert p.complete([]).text  # returns the canned scripted response


def test_fake_spec_without_model_defaults_name():
    assert make_provider("fake:").model_name == "fake"


def test_spec_without_colon_raises():
    with pytest.raises(ValueError, match="<name>:<model>"):
        make_provider("anthropic")  # missing ':model'


def test_unknown_provider_raises_listing_available():
    with pytest.raises(ValueError, match="Unknown provider"):
        make_provider("bogus:whatever")


def test_available_providers_contains_cloud_and_fake():
    names = available_providers()
    assert {"openai", "anthropic", "gemini", "ollama", "fake"} <= set(names)


def test_registry_resolves_to_module_class_strings_without_importing():
    # Resolution is by string (lazy import) so this works with no SDK installed.
    assert _REGISTRY["anthropic"] == ("proteus.providers.anthropic_provider", "AnthropicProvider")
    assert _REGISTRY["openai"] == ("proteus.providers.openai", "OpenAIProvider")
    assert _REGISTRY["gemini"] == ("proteus.providers.gemini", "GeminiProvider")
    assert _REGISTRY["ollama"] == ("proteus.providers.ollama_cloud", "OllamaCloudProvider")


def test_model_with_colons_is_preserved():
    # Ollama-style models contain ':' — only the FIRST ':' splits name from model.
    p = make_provider("fake:qwen3.5:cloud")
    assert p.model_name == "qwen3.5:cloud"