"""Tests for configuration validation."""

import os
from unittest.mock import patch

import pytest

from nextcloud_mcp_server.config import Settings, get_settings


class TestQdrantConfigValidation:
    """Test Qdrant configuration validation."""

    def test_mutually_exclusive_url_and_location(self):
        """Test that setting both QDRANT_URL and QDRANT_LOCATION raises ValueError."""
        with pytest.raises(
            ValueError,
            match="Cannot set both QDRANT_URL and QDRANT_LOCATION",
        ):
            Settings(
                qdrant_url="http://qdrant:6333",
                qdrant_location="/app/data/qdrant",
            )

    def test_default_to_memory_mode(self):
        """Test that :memory: is used when neither URL nor location is set."""
        settings = Settings()
        assert settings.qdrant_location == ":memory:"
        assert settings.qdrant_url is None

    def test_network_mode_only(self):
        """Test network mode with only URL set."""
        settings = Settings(qdrant_url="http://qdrant:6333")
        assert settings.qdrant_url == "http://qdrant:6333"
        assert settings.qdrant_location is None

    def test_local_mode_only(self):
        """Test local mode with only location set."""
        settings = Settings(qdrant_location="/app/data/qdrant")
        assert settings.qdrant_location == "/app/data/qdrant"
        assert settings.qdrant_url is None

    def test_in_memory_mode_explicit(self):
        """Test explicit in-memory mode."""
        settings = Settings(qdrant_location=":memory:")
        assert settings.qdrant_location == ":memory:"
        assert settings.qdrant_url is None

    def test_api_key_warning_in_local_mode(self, caplog):
        """Test that API key in local mode triggers warning."""
        import logging

        caplog.set_level(logging.WARNING, logger="nextcloud_mcp_server.config")
        Settings(
            qdrant_location=":memory:",
            qdrant_api_key="test-api-key",
        )
        assert "API key is only relevant for network mode" in caplog.text

    def test_api_key_no_warning_in_network_mode(self, caplog):
        """Test that API key in network mode doesn't trigger warning."""
        import logging

        caplog.set_level(logging.WARNING, logger="nextcloud_mcp_server.config")
        Settings(
            qdrant_url="http://qdrant:6333",
            qdrant_api_key="test-api-key",
        )
        assert "API key is only relevant for network mode" not in caplog.text


class TestGetSettings:
    """Test get_settings() function with environment variables."""

    @patch.dict(os.environ, {}, clear=True)
    def test_get_settings_defaults_to_memory(self):
        """Test get_settings() defaults to :memory: when no env vars set."""
        settings = get_settings()
        assert settings.qdrant_location == ":memory:"
        assert settings.qdrant_url is None

    @patch.dict(
        os.environ,
        {
            "QDRANT_URL": "http://qdrant:6333",
            "QDRANT_API_KEY": "test-key",
        },
        clear=True,
    )
    def test_get_settings_network_mode(self):
        """Test get_settings() with network mode env vars."""
        settings = get_settings()
        assert settings.qdrant_url == "http://qdrant:6333"
        assert settings.qdrant_api_key == "test-key"
        assert settings.qdrant_location is None

    @patch.dict(
        os.environ,
        {"QDRANT_LOCATION": "/app/data/qdrant"},
        clear=True,
    )
    def test_get_settings_persistent_mode(self):
        """Test get_settings() with persistent local mode env vars."""
        settings = get_settings()
        assert settings.qdrant_location == "/app/data/qdrant"
        assert settings.qdrant_url is None

    @patch.dict(
        os.environ,
        {"QDRANT_LOCATION": ":memory:"},
        clear=True,
    )
    def test_get_settings_explicit_memory(self):
        """Test get_settings() with explicit :memory: env var."""
        settings = get_settings()
        assert settings.qdrant_location == ":memory:"
        assert settings.qdrant_url is None

    @patch.dict(
        os.environ,
        {
            "QDRANT_URL": "http://qdrant:6333",
            "QDRANT_LOCATION": "/app/data/qdrant",
        },
        clear=True,
    )
    def test_get_settings_mutual_exclusion_error(self):
        """Test get_settings() raises error when both URL and location set."""
        with pytest.raises(
            ValueError,
            match="Cannot set both QDRANT_URL and QDRANT_LOCATION",
        ):
            get_settings()

    @patch.dict(
        os.environ,
        {
            "QDRANT_COLLECTION": "test_collection",
            "VECTOR_SYNC_ENABLED": "true",
            "VECTOR_SYNC_SCAN_INTERVAL": "600",
            "VECTOR_SYNC_PROCESSOR_WORKERS": "5",
            "VECTOR_SYNC_QUEUE_MAX_SIZE": "5000",
        },
        clear=True,
    )
    def test_get_settings_vector_sync_config(self):
        """Test get_settings() with vector sync configuration."""
        settings = get_settings()
        assert settings.qdrant_collection == "test_collection"
        assert settings.vector_sync_enabled is True
        assert settings.vector_sync_scan_interval == 600
        assert settings.vector_sync_processor_workers == 5
        assert settings.vector_sync_queue_max_size == 5000