import os
import sys
from unittest.mock import MagicMock, patch

import pytest

sys.path.insert(
    0, os.path.abspath("../../..")
)  # Adds the parent directory to the system-path

from litellm.proxy.proxy_cli import ProxyInitializationHelpers
import builtins
from litellm.proxy.proxy_cli import run_separate_health_app
import types


class TestProxyInitializationHelpers:
    @patch("importlib.metadata.version")
    @patch("click.echo")
    def test_echo_litellm_version(self, mock_echo, mock_version):
        # Setup
        mock_version.return_value = "1.0.0"

        # Execute
        ProxyInitializationHelpers._echo_litellm_version()

        # Assert
        mock_version.assert_called_once_with("litellm")
        mock_echo.assert_called_once_with("\nLiteLLM: Current Version = 1.0.0\n")

    @patch("httpx.get")
    @patch("builtins.print")
    @patch("json.dumps")
    def test_run_health_check(self, mock_dumps, mock_print, mock_get):
        # Setup
        mock_response = MagicMock()
        mock_response.json.return_value = {"status": "healthy"}
        mock_get.return_value = mock_response
        mock_dumps.return_value = '{"status": "healthy"}'

        # Execute
        ProxyInitializationHelpers._run_health_check("localhost", 8000)

        # Assert
        mock_get.assert_called_once_with(url="http://localhost:8000/health")
        mock_response.json.assert_called_once()
        mock_dumps.assert_called_once_with({"status": "healthy"}, indent=4)

    @patch("openai.OpenAI")
    @patch("click.echo")
    @patch("builtins.print")
    def test_run_test_chat_completion(self, mock_print, mock_echo, mock_openai):
        # Setup
        mock_client = MagicMock()
        mock_openai.return_value = mock_client

        mock_response = MagicMock()
        mock_client.chat.completions.create.return_value = mock_response

        mock_stream_response = MagicMock()
        mock_stream_response.__iter__.return_value = [MagicMock(), MagicMock()]
        mock_client.chat.completions.create.side_effect = [
            mock_response,
            mock_stream_response,
        ]

        # Execute
        with pytest.raises(ValueError, match="Invalid test value"):
            ProxyInitializationHelpers._run_test_chat_completion(
                "localhost", 8000, "gpt-3.5-turbo", True
            )

        # Test with valid string test value
        ProxyInitializationHelpers._run_test_chat_completion(
            "localhost", 8000, "gpt-3.5-turbo", "http://test-url"
        )

        # Assert
        mock_openai.assert_called_once_with(
            api_key="My API Key", base_url="http://test-url"
        )
        mock_client.chat.completions.create.assert_called()

    def test_get_default_unvicorn_init_args(self):
        # Test without log_config
        args = ProxyInitializationHelpers._get_default_unvicorn_init_args(
            "localhost", 8000
        )
        assert args["app"] == "litellm.proxy.proxy_server:app"
        assert args["host"] == "localhost"
        assert args["port"] == 8000

        # Test with log_config
        args = ProxyInitializationHelpers._get_default_unvicorn_init_args(
            "localhost", 8000, "log_config.json"
        )
        assert args["log_config"] == "log_config.json"

        # Test with json_logs=True
        with patch("litellm.json_logs", True):
            args = ProxyInitializationHelpers._get_default_unvicorn_init_args(
                "localhost", 8000
            )
            assert args["log_config"] is None

        # Test with keepalive_timeout
        args = ProxyInitializationHelpers._get_default_unvicorn_init_args(
            "localhost", 8000, None, 60
        )
        assert args["timeout_keep_alive"] == 60

        # Test with both log_config and keepalive_timeout
        args = ProxyInitializationHelpers._get_default_unvicorn_init_args(
            "localhost", 8000, "log_config.json", 120
        )
        assert args["log_config"] == "log_config.json"
        assert args["timeout_keep_alive"] == 120

    @patch("asyncio.run")
    @patch("builtins.print")
    def test_init_hypercorn_server(self, mock_print, mock_asyncio_run):
        # Setup
        mock_app = MagicMock()

        # Execute
        ProxyInitializationHelpers._init_hypercorn_server(
            mock_app, "localhost", 8000, None, None, None
        )

        # Assert
        mock_asyncio_run.assert_called_once()

        # Test with SSL
        ProxyInitializationHelpers._init_hypercorn_server(
            mock_app, "localhost", 8000, "cert.pem", "key.pem", "ECDHE"
        )

    @patch("subprocess.Popen")
    def test_run_ollama_serve(self, mock_popen):
        # Execute
        ProxyInitializationHelpers._run_ollama_serve()

        # Assert
        mock_popen.assert_called_once()

        # Test exception handling
        mock_popen.side_effect = Exception("Test exception")
        ProxyInitializationHelpers._run_ollama_serve()  # Should not raise

    @patch("socket.socket")
    def test_is_port_in_use(self, mock_socket):
        # Setup for port in use
        mock_socket_instance = MagicMock()
        mock_socket_instance.connect_ex.return_value = 0
        mock_socket.return_value.__enter__.return_value = mock_socket_instance

        # Execute and Assert
        assert ProxyInitializationHelpers._is_port_in_use(8000) is True

        # Setup for port not in use
        mock_socket_instance.connect_ex.return_value = 1

        # Execute and Assert
        assert ProxyInitializationHelpers._is_port_in_use(8000) is False

    def test_get_loop_type(self):
        # Test on Windows
        with patch("sys.platform", "win32"):
            assert ProxyInitializationHelpers._get_loop_type() is None

        # Test on Linux
        with patch("sys.platform", "linux"):
            assert ProxyInitializationHelpers._get_loop_type() == "uvloop"

    @patch.dict(os.environ, {}, clear=True)
    def test_database_url_construction_with_special_characters(self):
        # Setup environment variables with special characters that need escaping
        test_env = {
            "DATABASE_HOST": "localhost:5432",
            "DATABASE_USERNAME": "user@with+special",
            "DATABASE_PASSWORD": "pass&word!@#$%",
            "DATABASE_NAME": "db_name/test",
        }

        with patch.dict(os.environ, test_env):
            # Call the relevant function - we'll need to extract the database URL construction logic
            # This is simulating what happens in the run_server function when database_url is None
            import urllib.parse

            from litellm.proxy.proxy_cli import append_query_params

            database_host = os.environ["DATABASE_HOST"]
            database_username = os.environ["DATABASE_USERNAME"]
            database_password = os.environ["DATABASE_PASSWORD"]
            database_name = os.environ["DATABASE_NAME"]

            # Test the URL encoding part
            database_username_enc = urllib.parse.quote_plus(database_username)
            database_password_enc = urllib.parse.quote_plus(database_password)
            database_name_enc = urllib.parse.quote_plus(database_name)

            # Construct DATABASE_URL from the provided variables
            database_url = f"postgresql://{database_username_enc}:{database_password_enc}@{database_host}/{database_name_enc}"

            # Assert the correct URL was constructed with properly escaped characters
            expected_url = "postgresql://user%40with%2Bspecial:pass%26word%21%40%23%24%25@localhost:5432/db_name%2Ftest"
            assert database_url == expected_url

            # Test appending query parameters
            params = {"connection_limit": 10, "pool_timeout": 60}
            modified_url = append_query_params(database_url, params)
            assert "connection_limit=10" in modified_url
            assert "pool_timeout=60" in modified_url

    @patch("uvicorn.run")
    @patch("builtins.print")
    def test_skip_server_startup(self, mock_print, mock_uvicorn_run):
        """Test that the skip_server_startup flag prevents server startup when True"""
        from click.testing import CliRunner

        from litellm.proxy.proxy_cli import run_server

        runner = CliRunner()

        mock_app = MagicMock()
        mock_proxy_config = MagicMock()
        mock_key_mgmt = MagicMock()
        mock_save_worker_config = MagicMock()

        with patch.dict(
            "sys.modules",
            {
                "proxy_server": MagicMock(
                    app=mock_app,
                    ProxyConfig=mock_proxy_config,
                    KeyManagementSettings=mock_key_mgmt,
                    save_worker_config=mock_save_worker_config,
                )
            },
        ), patch(
            "litellm.proxy.proxy_cli.ProxyInitializationHelpers._get_default_unvicorn_init_args"
        ) as mock_get_args:
            mock_get_args.return_value = {
                "app": "litellm.proxy.proxy_server:app",
                "host": "localhost",
                "port": 8000,
            }

            result = runner.invoke(run_server, ["--local", "--skip_server_startup"])

            assert result.exit_code == 0
            mock_uvicorn_run.assert_not_called()
            mock_print.assert_any_call(
                "LiteLLM: Setup complete. Skipping server startup as requested."
            )

            mock_uvicorn_run.reset_mock()
            mock_print.reset_mock()

            result = runner.invoke(run_server, ["--local"])

            assert result.exit_code == 0
            mock_uvicorn_run.assert_called_once()

    @patch("uvicorn.run")
    @patch("builtins.print")
    def test_keepalive_timeout_flag(self, mock_print, mock_uvicorn_run):
        """Test that the keepalive_timeout flag is properly passed to uvicorn"""
        from click.testing import CliRunner

        from litellm.proxy.proxy_cli import run_server

        runner = CliRunner()

        mock_app = MagicMock()
        mock_proxy_config = MagicMock()
        mock_key_mgmt = MagicMock()
        mock_save_worker_config = MagicMock()

        with patch.dict(
            "sys.modules",
            {
                "proxy_server": MagicMock(
                    app=mock_app,
                    ProxyConfig=mock_proxy_config,
                    KeyManagementSettings=mock_key_mgmt,
                    save_worker_config=mock_save_worker_config,
                )
            },
        ), patch(
            "litellm.proxy.proxy_cli.ProxyInitializationHelpers._get_default_unvicorn_init_args"
        ) as mock_get_args:
            mock_get_args.return_value = {
                "app": "litellm.proxy.proxy_server:app",
                "host": "localhost",
                "port": 8000,
                "timeout_keep_alive": 30,
            }

            result = runner.invoke(run_server, ["--local", "--keepalive_timeout", "30"])

            assert result.exit_code == 0
            mock_get_args.assert_called_once_with(
                host="0.0.0.0",
                port=4000,
                log_config=None,
                keepalive_timeout=30,
            )
            mock_uvicorn_run.assert_called_once()
            
            # Check that the uvicorn.run was called with the timeout_keep_alive parameter
            call_args = mock_uvicorn_run.call_args
            assert call_args[1]["timeout_keep_alive"] == 30


def test_run_separate_health_app_runs_only_when_flag(monkeypatch):
    # Patch print to track output
    printed = []
    monkeypatch.setattr(builtins, "print", lambda *args, **kwargs: printed.append(args))
    # Patch threading.Thread to track if it's started
    started = {}
    class DummyThread:
        def __init__(self, target, daemon):
            started['called'] = True
        def start(self):
            started['started'] = True
    monkeypatch.setattr("threading.Thread", DummyThread)
    # Patch uvicorn.run to prevent actual server start
    monkeypatch.setattr("uvicorn.run", lambda *a, **k: None)
    # Patch FastAPI import by patching sys.modules['fastapi']
    class DummyFastAPI:
        def __init__(self, *a, **k):
            pass
        def include_router(self, router):
            pass
    dummy_fastapi = types.ModuleType("fastapi")
    dummy_fastapi.FastAPI = DummyFastAPI
    monkeypatch.setitem(sys.modules, "fastapi", dummy_fastapi)
    # Patch the health_endpoints module in sys.modules
    dummy_health_endpoints = types.ModuleType("litellm.proxy.health_endpoints._health_endpoints")
    dummy_health_endpoints.router = object()
    monkeypatch.setitem(sys.modules, "litellm.proxy.health_endpoints._health_endpoints", dummy_health_endpoints)

    # Should NOT run if flag is not set
    monkeypatch.setenv("SEPARATE_HEALTH_APP", "0")
    started.clear()
    printed.clear()
    run_separate_health_app()
    assert not started, "Should not start thread if flag is not '1'"
    assert not printed, "Should not print if flag is not '1'"

    # Should run if flag is set
    monkeypatch.setenv("SEPARATE_HEALTH_APP", "1")
    started.clear()
    printed.clear()
    run_separate_health_app()
    assert started.get('called'), "Should create thread if flag is '1'"
    assert started.get('started') is None or started.get('started'), "Should start thread if flag is '1'"
    assert any("LiteLLM Health Endpoints" in str(args) for args in printed), "Should print health endpoint message if flag is '1'"