"""High-value tests for utilities/llm_utils.py - LLM URL Resolution."""

from unittest.mock import patch


from local_deep_research.utilities.llm_utils import (
    get_ollama_base_url,
    get_server_url,
)


# ---------------------------------------------------------------------------
# get_ollama_base_url()
# ---------------------------------------------------------------------------


class TestGetOllamaBaseUrl:
    """Ollama base URL fallback chain."""

    @patch("local_deep_research.utilities.llm_utils.get_setting_from_snapshot")
    @patch(
        "local_deep_research.utilities.url_utils.normalize_url",
        side_effect=lambda x: x,
    )
    def test_embeddings_url_takes_priority(self, mock_normalize, mock_get):
        mock_get.side_effect = (
            lambda key, default=None, settings_snapshot=None: (
                "http://ollama-embed:11434"
                if key == "embeddings.ollama.url"
                else default
            )
        )
        result = get_ollama_base_url()
        assert result == "http://ollama-embed:11434"

    @patch("local_deep_research.utilities.llm_utils.get_setting_from_snapshot")
    @patch(
        "local_deep_research.utilities.url_utils.normalize_url",
        side_effect=lambda x: x,
    )
    def test_llm_url_fallback(self, mock_normalize, mock_get):
        def side_effect(key, default=None, settings_snapshot=None):
            if key == "embeddings.ollama.url":
                return default  # not set
            if key == "llm.ollama.url":
                return "http://ollama-llm:11434"
            return default

        mock_get.side_effect = side_effect
        result = get_ollama_base_url()
        assert result == "http://ollama-llm:11434"

    @patch("local_deep_research.utilities.llm_utils.get_setting_from_snapshot")
    @patch(
        "local_deep_research.utilities.url_utils.normalize_url",
        side_effect=lambda x: x,
    )
    def test_default_localhost(self, mock_normalize, mock_get):
        mock_get.side_effect = (
            lambda key, default=None, settings_snapshot=None: default
        )
        result = get_ollama_base_url()
        assert result == "http://localhost:11434"

    @patch("local_deep_research.utilities.llm_utils.get_setting_from_snapshot")
    @patch(
        "local_deep_research.utilities.url_utils.normalize_url",
        side_effect=lambda x: x,
    )
    def test_settings_snapshot_passed_through(self, mock_normalize, mock_get):
        snapshot = {"embeddings": {"ollama": {"url": "http://custom:1234"}}}
        mock_get.side_effect = (
            lambda key, default=None, settings_snapshot=None: default
        )
        get_ollama_base_url(settings_snapshot=snapshot)
        # Verify snapshot is passed to every get_setting_from_snapshot call
        for call in mock_get.call_args_list:
            assert call.kwargs.get("settings_snapshot") == snapshot

    @patch("local_deep_research.utilities.llm_utils.get_setting_from_snapshot")
    @patch(
        "local_deep_research.utilities.url_utils.normalize_url",
        side_effect=lambda x: x,
    )
    def test_normalize_url_called(self, mock_normalize, mock_get):
        mock_get.side_effect = (
            lambda key, default=None, settings_snapshot=None: (
                "http://host:1234/"
                if key == "embeddings.ollama.url"
                else default
            )
        )
        get_ollama_base_url()
        mock_normalize.assert_called_once_with("http://host:1234/")

    @patch("local_deep_research.utilities.llm_utils.get_setting_from_snapshot")
    def test_none_url_returns_default(self, mock_get):
        """If the resolved URL is None/empty, fall back to localhost."""
        mock_get.side_effect = (
            lambda key, default=None, settings_snapshot=None: None
        )
        result = get_ollama_base_url()
        assert result == "http://localhost:11434"


# ---------------------------------------------------------------------------
# get_server_url()
# ---------------------------------------------------------------------------


class TestGetServerUrl:
    """Server URL multi-source fallback chain."""

    def test_no_snapshot_returns_default(self):
        result = get_server_url(settings_snapshot=None)
        assert result == "http://127.0.0.1:5000/"

    def test_direct_server_url_in_snapshot(self):
        snapshot = {"server_url": "https://myserver.com:8080/"}
        result = get_server_url(settings_snapshot=snapshot)
        assert result == "https://myserver.com:8080/"

    def test_system_server_url_fallback(self):
        snapshot = {"system": {"server_url": "https://system-server.com/"}}
        result = get_server_url(settings_snapshot=snapshot)
        assert result == "https://system-server.com/"

    @patch("local_deep_research.utilities.llm_utils.get_setting_from_snapshot")
    def test_construct_from_host_port_https(self, mock_get):
        def side_effect(key, default_val=None, default=None):
            mapping = {
                "web.host": "192.168.1.100",
                "web.port": 8443,
                "web.use_https": True,
            }
            return mapping.get(key, default)

        mock_get.side_effect = side_effect

        snapshot = {"other": "stuff"}  # no server_url, no system.server_url
        result = get_server_url(settings_snapshot=snapshot)
        assert "192.168.1.100" in result
        assert "8443" in result
        assert result.startswith("https://")

    @patch("local_deep_research.utilities.llm_utils.get_setting_from_snapshot")
    def test_construct_http_when_not_https(self, mock_get):
        def side_effect(key, default_val=None, default=None):
            mapping = {
                "web.host": "myhost",
                "web.port": 3000,
                "web.use_https": False,
            }
            return mapping.get(key, default)

        mock_get.side_effect = side_effect

        snapshot = {"other": "stuff"}
        result = get_server_url(settings_snapshot=snapshot)
        assert result.startswith("http://")

    @patch("local_deep_research.utilities.llm_utils.get_setting_from_snapshot")
    def test_0000_replaced_with_127001(self, mock_get):
        def side_effect(key, default_val=None, default=None):
            mapping = {
                "web.host": "0.0.0.0",
                "web.port": 5000,
                "web.use_https": True,
            }
            return mapping.get(key, default)

        mock_get.side_effect = side_effect

        snapshot = {"other": "stuff"}
        result = get_server_url(settings_snapshot=snapshot)
        assert "127.0.0.1" in result
        assert "0.0.0.0" not in result

    def test_direct_server_url_preferred_over_system(self):
        snapshot = {
            "server_url": "https://direct.com/",
            "system": {"server_url": "https://system.com/"},
        }
        result = get_server_url(settings_snapshot=snapshot)
        assert result == "https://direct.com/"

    def test_empty_snapshot(self):
        result = get_server_url(settings_snapshot={})
        # Should construct from defaults or fall back
        assert result is not None
        assert len(result) > 0

    def test_empty_string_server_url_falls_through(self):
        snapshot = {"server_url": "", "system": {"server_url": ""}}
        result = get_server_url(settings_snapshot=snapshot)
        # Empty strings are falsy, should fall through to construction
        assert result is not None