"""Tests for the /fast CLI command and service-tier config handling."""

import unittest
from types import SimpleNamespace
from unittest.mock import MagicMock, patch


def _import_cli():
    import hermes_cli.config as config_mod

    if not hasattr(config_mod, "save_env_value_secure"):
        config_mod.save_env_value_secure = lambda key, value: {
            "success": True,
            "stored_as": key,
            "validated": False,
        }

    import cli as cli_mod

    return cli_mod


class TestParseServiceTierConfig(unittest.TestCase):
    def _parse(self, raw):
        cli_mod = _import_cli()
        return cli_mod._parse_service_tier_config(raw)

    def test_fast_maps_to_priority(self):
        self.assertEqual(self._parse("fast"), "priority")
        self.assertEqual(self._parse("priority"), "priority")

    def test_normal_disables_service_tier(self):
        self.assertIsNone(self._parse("normal"))
        self.assertIsNone(self._parse("off"))
        self.assertIsNone(self._parse(""))


class TestHandleFastCommand(unittest.TestCase):
    def _make_cli(self, service_tier=None):
        return SimpleNamespace(
            service_tier=service_tier,
            provider="openai-codex",
            requested_provider="openai-codex",
            model="gpt-5.4",
            _fast_command_available=lambda: True,
            agent=MagicMock(),
        )

    def test_no_args_shows_status(self):
        cli_mod = _import_cli()
        stub = self._make_cli(service_tier=None)
        with (
            patch.object(cli_mod, "_cprint") as mock_cprint,
            patch.object(cli_mod, "save_config_value") as mock_save,
        ):
            cli_mod.HermesCLI._handle_fast_command(stub, "/fast")

        # Bare /fast shows status, does not change config
        mock_save.assert_not_called()
        # Should have printed the status line
        printed = " ".join(str(c) for c in mock_cprint.call_args_list)
        self.assertIn("normal", printed)

    def test_no_args_shows_fast_when_enabled(self):
        cli_mod = _import_cli()
        stub = self._make_cli(service_tier="priority")
        with (
            patch.object(cli_mod, "_cprint") as mock_cprint,
            patch.object(cli_mod, "save_config_value") as mock_save,
        ):
            cli_mod.HermesCLI._handle_fast_command(stub, "/fast")

        mock_save.assert_not_called()
        printed = " ".join(str(c) for c in mock_cprint.call_args_list)
        self.assertIn("fast", printed)

    def test_normal_argument_clears_service_tier(self):
        cli_mod = _import_cli()
        stub = self._make_cli(service_tier="priority")
        with (
            patch.object(cli_mod, "_cprint"),
            patch.object(cli_mod, "save_config_value", return_value=True) as mock_save,
        ):
            cli_mod.HermesCLI._handle_fast_command(stub, "/fast normal")

        mock_save.assert_called_once_with("agent.service_tier", "normal")
        self.assertIsNone(stub.service_tier)
        self.assertIsNone(stub.agent)

    def test_unsupported_model_does_not_expose_fast(self):
        cli_mod = _import_cli()
        stub = SimpleNamespace(
            service_tier=None,
            provider="openai-codex",
            requested_provider="openai-codex",
            model="gpt-5.3-codex",
            _fast_command_available=lambda: False,
            agent=MagicMock(),
        )

        with (
            patch.object(cli_mod, "_cprint") as mock_cprint,
            patch.object(cli_mod, "save_config_value") as mock_save,
        ):
            cli_mod.HermesCLI._handle_fast_command(stub, "/fast")

        mock_save.assert_not_called()
        self.assertTrue(mock_cprint.called)


class TestPriorityProcessingModels(unittest.TestCase):
    """Verify the expanded Priority Processing model registry."""

    def test_all_documented_models_supported(self):
        from hermes_cli.models import model_supports_fast_mode

        # All models from OpenAI's Priority Processing pricing table
        supported = [
            "gpt-5.4", "gpt-5.4-mini", "gpt-5.2",
            "gpt-5.1", "gpt-5", "gpt-5-mini",
            "gpt-4.1", "gpt-4.1-mini", "gpt-4.1-nano",
            "gpt-4o", "gpt-4o-mini",
            "o3", "o4-mini",
        ]
        for model in supported:
            assert model_supports_fast_mode(model), f"{model} should support fast mode"

    def test_vendor_prefix_stripped(self):
        from hermes_cli.models import model_supports_fast_mode

        assert model_supports_fast_mode("openai/gpt-5.4") is True
        assert model_supports_fast_mode("openai/gpt-4.1") is True
        assert model_supports_fast_mode("openai/o3") is True

    def test_non_priority_models_rejected(self):
        from hermes_cli.models import model_supports_fast_mode

        assert model_supports_fast_mode("gpt-5.3-codex") is False
        assert model_supports_fast_mode("claude-sonnet-4") is False
        assert model_supports_fast_mode("") is False
        assert model_supports_fast_mode(None) is False

    def test_resolve_overrides_returns_service_tier(self):
        from hermes_cli.models import resolve_fast_mode_overrides

        result = resolve_fast_mode_overrides("gpt-5.4")
        assert result == {"service_tier": "priority"}

        result = resolve_fast_mode_overrides("gpt-4.1")
        assert result == {"service_tier": "priority"}

    def test_resolve_overrides_none_for_unsupported(self):
        from hermes_cli.models import resolve_fast_mode_overrides

        assert resolve_fast_mode_overrides("gpt-5.3-codex") is None
        assert resolve_fast_mode_overrides("claude-sonnet-4") is None


class TestFastModeRouting(unittest.TestCase):
    def test_fast_command_exposed_for_model_even_when_provider_is_auto(self):
        cli_mod = _import_cli()
        stub = SimpleNamespace(provider="auto", requested_provider="auto", model="gpt-5.4", agent=None)

        assert cli_mod.HermesCLI._fast_command_available(stub) is True

    def test_fast_command_exposed_for_non_codex_models(self):
        cli_mod = _import_cli()
        stub = SimpleNamespace(provider="openai", requested_provider="openai", model="gpt-4.1", agent=None)
        assert cli_mod.HermesCLI._fast_command_available(stub) is True

        stub = SimpleNamespace(provider="openrouter", requested_provider="openrouter", model="o3", agent=None)
        assert cli_mod.HermesCLI._fast_command_available(stub) is True

    def test_turn_route_injects_overrides_without_provider_switch(self):
        """Fast mode should add request_overrides but NOT change the provider/runtime."""
        cli_mod = _import_cli()
        stub = SimpleNamespace(
            model="gpt-5.4",
            api_key="primary-key",
            base_url="https://openrouter.ai/api/v1",
            provider="openrouter",
            api_mode="chat_completions",
            acp_command=None,
            acp_args=[],
            _credential_pool=None,
            service_tier="priority",
        )

        route = cli_mod.HermesCLI._resolve_turn_agent_config(stub, "hi")

        # Provider should NOT have changed
        assert route["runtime"]["provider"] == "openrouter"
        assert route["runtime"]["api_mode"] == "chat_completions"
        # But request_overrides should be set
        assert route["request_overrides"] == {"service_tier": "priority"}

    def test_turn_route_keeps_primary_runtime_when_model_has_no_fast_backend(self):
        cli_mod = _import_cli()
        stub = SimpleNamespace(
            model="gpt-5.3-codex",
            api_key="primary-key",
            base_url="https://openrouter.ai/api/v1",
            provider="openrouter",
            api_mode="chat_completions",
            acp_command=None,
            acp_args=[],
            _credential_pool=None,
            service_tier="priority",
        )

        route = cli_mod.HermesCLI._resolve_turn_agent_config(stub, "hi")

        assert route["runtime"]["provider"] == "openrouter"
        assert route.get("request_overrides") is None


class TestAnthropicFastMode(unittest.TestCase):
    """Verify Anthropic Fast Mode model support and override resolution."""

    def test_anthropic_opus_supported(self):
        from hermes_cli.models import model_supports_fast_mode

        # Native Anthropic format (hyphens)
        assert model_supports_fast_mode("claude-opus-4-6") is True
        # OpenRouter format (dots)
        assert model_supports_fast_mode("claude-opus-4.6") is True
        # With vendor prefix
        assert model_supports_fast_mode("anthropic/claude-opus-4-6") is True
        assert model_supports_fast_mode("anthropic/claude-opus-4.6") is True

    def test_anthropic_non_opus_rejected(self):
        from hermes_cli.models import model_supports_fast_mode

        assert model_supports_fast_mode("claude-sonnet-4-6") is False
        assert model_supports_fast_mode("claude-sonnet-4.6") is False
        assert model_supports_fast_mode("claude-haiku-4-5") is False
        assert model_supports_fast_mode("anthropic/claude-sonnet-4.6") is False

    def test_anthropic_variant_tags_stripped(self):
        from hermes_cli.models import model_supports_fast_mode

        # OpenRouter variant tags after colon should be stripped
        assert model_supports_fast_mode("claude-opus-4.6:fast") is True
        assert model_supports_fast_mode("claude-opus-4.6:beta") is True

    def test_resolve_overrides_returns_speed_for_anthropic(self):
        from hermes_cli.models import resolve_fast_mode_overrides

        result = resolve_fast_mode_overrides("claude-opus-4-6")
        assert result == {"speed": "fast"}

        result = resolve_fast_mode_overrides("anthropic/claude-opus-4.6")
        assert result == {"speed": "fast"}

    def test_resolve_overrides_returns_service_tier_for_openai(self):
        """OpenAI models should still get service_tier, not speed."""
        from hermes_cli.models import resolve_fast_mode_overrides

        result = resolve_fast_mode_overrides("gpt-5.4")
        assert result == {"service_tier": "priority"}

    def test_is_anthropic_fast_model(self):
        from hermes_cli.models import _is_anthropic_fast_model

        assert _is_anthropic_fast_model("claude-opus-4-6") is True
        assert _is_anthropic_fast_model("claude-opus-4.6") is True
        assert _is_anthropic_fast_model("anthropic/claude-opus-4-6") is True
        assert _is_anthropic_fast_model("gpt-5.4") is False
        assert _is_anthropic_fast_model("claude-sonnet-4-6") is False

    def test_fast_command_exposed_for_anthropic_model(self):
        cli_mod = _import_cli()
        stub = SimpleNamespace(
            provider="anthropic", requested_provider="anthropic",
            model="claude-opus-4-6", agent=None,
        )
        assert cli_mod.HermesCLI._fast_command_available(stub) is True

    def test_fast_command_hidden_for_anthropic_sonnet(self):
        cli_mod = _import_cli()
        stub = SimpleNamespace(
            provider="anthropic", requested_provider="anthropic",
            model="claude-sonnet-4-6", agent=None,
        )
        assert cli_mod.HermesCLI._fast_command_available(stub) is False

    def test_turn_route_injects_speed_for_anthropic(self):
        """Anthropic models should get speed:'fast' override, not service_tier."""
        cli_mod = _import_cli()
        stub = SimpleNamespace(
            model="claude-opus-4-6",
            api_key="sk-ant-test",
            base_url="https://api.anthropic.com",
            provider="anthropic",
            api_mode="anthropic_messages",
            acp_command=None,
            acp_args=[],
            _credential_pool=None,
            service_tier="priority",
        )

        route = cli_mod.HermesCLI._resolve_turn_agent_config(stub, "hi")

        assert route["runtime"]["provider"] == "anthropic"
        assert route["request_overrides"] == {"speed": "fast"}


class TestAnthropicFastModeAdapter(unittest.TestCase):
    """Verify build_anthropic_kwargs handles fast_mode parameter."""

    def test_fast_mode_adds_speed_and_beta(self):
        from agent.anthropic_adapter import build_anthropic_kwargs, _FAST_MODE_BETA

        kwargs = build_anthropic_kwargs(
            model="claude-opus-4-6",
            messages=[{"role": "user", "content": [{"type": "text", "text": "hi"}]}],
            tools=None,
            max_tokens=None,
            reasoning_config=None,
            fast_mode=True,
        )
        assert kwargs.get("extra_body", {}).get("speed") == "fast"
        assert "speed" not in kwargs
        assert "extra_headers" in kwargs
        assert _FAST_MODE_BETA in kwargs["extra_headers"].get("anthropic-beta", "")

    def test_fast_mode_off_no_speed(self):
        from agent.anthropic_adapter import build_anthropic_kwargs

        kwargs = build_anthropic_kwargs(
            model="claude-opus-4-6",
            messages=[{"role": "user", "content": [{"type": "text", "text": "hi"}]}],
            tools=None,
            max_tokens=None,
            reasoning_config=None,
            fast_mode=False,
        )
        assert kwargs.get("extra_body", {}).get("speed") is None
        assert "speed" not in kwargs
        assert "extra_headers" not in kwargs

    def test_fast_mode_skipped_for_third_party_endpoint(self):
        from agent.anthropic_adapter import build_anthropic_kwargs

        kwargs = build_anthropic_kwargs(
            model="claude-opus-4-6",
            messages=[{"role": "user", "content": [{"type": "text", "text": "hi"}]}],
            tools=None,
            max_tokens=None,
            reasoning_config=None,
            fast_mode=True,
            base_url="https://api.minimax.io/anthropic/v1",
        )
        # Third-party endpoints should NOT get speed or fast-mode beta
        assert kwargs.get("extra_body", {}).get("speed") is None
        assert "speed" not in kwargs
        assert "extra_headers" not in kwargs

    def test_fast_mode_kwargs_are_safe_for_sdk_unpacking(self):
        from agent.anthropic_adapter import build_anthropic_kwargs

        kwargs = build_anthropic_kwargs(
            model="claude-opus-4-6",
            messages=[{"role": "user", "content": [{"type": "text", "text": "hi"}]}],
            tools=None,
            max_tokens=None,
            reasoning_config=None,
            fast_mode=True,
        )
        assert "speed" not in kwargs
        assert kwargs.get("extra_body", {}).get("speed") == "fast"


class TestConfigDefault(unittest.TestCase):
    def test_default_config_has_service_tier(self):
        from hermes_cli.config import DEFAULT_CONFIG

        agent = DEFAULT_CONFIG.get("agent", {})
        self.assertIn("service_tier", agent)
        self.assertEqual(agent["service_tier"], "")