"""Tests for Portainer client."""
import pytest
from unittest.mock import patch, AsyncMock, MagicMock
import httpx

from src.clients.portainer_client import PortainerClient, get_portainer_client


class TestPortainerClientInit:
    """Test PortainerClient initialization."""

    @patch("src.clients.portainer_client.settings")
    def test_uses_settings_defaults(self, mock_settings):
        """Client should use settings for defaults."""
        mock_settings.portainer_url = "http://portainer:9000"
        mock_settings.portainer_api_key = "test_key"

        client = PortainerClient()

        assert client.base_url == "http://portainer:9000"
        assert client.api_key == "test_key"

    def test_accepts_custom_url_and_key(self):
        """Client should accept custom URL and API key."""
        client = PortainerClient(
            base_url="http://custom:9000",
            api_key="custom_key"
        )

        assert client.base_url == "http://custom:9000"
        assert client.api_key == "custom_key"

    def test_strips_trailing_slash_from_url(self):
        """Client should strip trailing slash from URL."""
        client = PortainerClient(
            base_url="http://custom:9000/",
            api_key="key"
        )

        assert client.base_url == "http://custom:9000"

    @patch("src.clients.portainer_client.logger")
    @patch("src.clients.portainer_client.settings")
    def test_warns_when_api_key_missing(self, mock_settings, mock_logger):
        """Client should warn when API key is not configured."""
        mock_settings.portainer_url = "http://portainer:9000"
        mock_settings.portainer_api_key = ""

        PortainerClient()

        mock_logger.warning.assert_called_once()


class TestPortainerClientHeaders:
    """Test header generation."""

    def test_get_headers_includes_api_key(self):
        """Headers should include X-API-Key."""
        client = PortainerClient(
            base_url="http://portainer:9000",
            api_key="my_api_key"
        )

        headers = client._get_headers()

        assert headers["X-API-Key"] == "my_api_key"
        assert headers["Content-Type"] == "application/json"


class TestPortainerClientHealthCheck:
    """Test health check functionality."""

    @pytest.mark.asyncio
    async def test_health_check_returns_true_on_200(self):
        """Health check should return True when Portainer responds 200."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200

            mock_client = AsyncMock()
            mock_client.get.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.health_check()

            assert result is True

    @pytest.mark.asyncio
    async def test_health_check_returns_false_on_error(self):
        """Health check should return False on connection error."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_client = AsyncMock()
            mock_client.get.side_effect = Exception("Connection refused")
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.health_check()

            assert result is False

    @pytest.mark.asyncio
    async def test_health_check_returns_false_on_non_200(self):
        """Health check should return False on non-200 status."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 401

            mock_client = AsyncMock()
            mock_client.get.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.health_check()

            assert result is False


class TestPortainerClientEndpoints:
    """Test endpoint retrieval."""

    @pytest.mark.asyncio
    async def test_get_endpoints_returns_list(self):
        """get_endpoints should return list of endpoints."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        endpoints = [
            {"Id": 1, "Name": "local"},
            {"Id": 2, "Name": "remote"}
        ]

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200
            mock_response.json.return_value = endpoints
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.get.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.get_endpoints()

            assert result == endpoints
            assert len(result) == 2


class TestPortainerClientStacks:
    """Test stack operations."""

    @pytest.mark.asyncio
    async def test_get_stacks_returns_list(self):
        """get_stacks should return list of stacks."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        stacks = [
            {"Id": 1, "Name": "stack1", "Status": 1},
            {"Id": 2, "Name": "stack2", "Status": 1}
        ]

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200
            mock_response.json.return_value = stacks
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.get.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.get_stacks()

            assert result == stacks

    @pytest.mark.asyncio
    async def test_get_stacks_with_endpoint_filter(self):
        """get_stacks should filter by endpoint_id when provided."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200
            mock_response.json.return_value = []
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.get.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            await client.get_stacks(endpoint_id=3)

            # Verify params include endpoint_id
            call_args = mock_client.get.call_args
            assert call_args[1]["params"]["endpointId"] == 3

    @pytest.mark.asyncio
    async def test_get_stack_returns_single_stack(self):
        """get_stack should return a single stack."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        stack = {"Id": 1, "Name": "mystack", "Status": 1}

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200
            mock_response.json.return_value = stack
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.get.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.get_stack(1)

            assert result == stack

    @pytest.mark.asyncio
    async def test_create_stack_posts_correct_data(self):
        """create_stack should POST with correct payload."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200
            mock_response.json.return_value = {"Id": 1, "Name": "newstack"}
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.post.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            await client.create_stack("newstack", "version: '3'\nservices:", 1)

            call_args = mock_client.post.call_args
            assert call_args[1]["json"]["name"] == "newstack"
            assert "stackFileContent" in call_args[1]["json"]

    @pytest.mark.asyncio
    async def test_update_stack_puts_correct_data(self):
        """update_stack should PUT with correct payload."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200
            mock_response.json.return_value = {"Id": 1, "Name": "stack"}
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.put.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            await client.update_stack(1, "version: '3'", 1, prune=True, pull_image=True)

            call_args = mock_client.put.call_args
            assert call_args[1]["json"]["prune"] is True
            assert call_args[1]["json"]["pullImage"] is True

    @pytest.mark.asyncio
    async def test_delete_stack_returns_true(self):
        """delete_stack should return True on success."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 204
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.delete.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.delete_stack(1, 1)

            assert result is True


class TestPortainerClientContainers:
    """Test container operations."""

    @pytest.mark.asyncio
    async def test_get_containers_returns_list(self):
        """get_containers should return list of containers."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        containers = [
            {"Id": "abc123", "Names": ["/container1"], "State": "running"},
            {"Id": "def456", "Names": ["/container2"], "State": "exited"}
        ]

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200
            mock_response.json.return_value = containers
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.get.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.get_containers(1)

            assert result == containers

    @pytest.mark.asyncio
    async def test_get_container_returns_details(self):
        """get_container should return container details."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        container = {"Id": "abc123", "Name": "/container1", "State": {"Status": "running"}}

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200
            mock_response.json.return_value = container
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.get.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.get_container(1, "abc123")

            assert result == container

    @pytest.mark.asyncio
    async def test_stop_container_returns_true(self):
        """stop_container should return True on success."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 204
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.post.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.stop_container(1, "abc123")

            assert result is True

    @pytest.mark.asyncio
    async def test_start_container_returns_true(self):
        """start_container should return True on success."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 204
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.post.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.start_container(1, "abc123")

            assert result is True


class TestPortainerClientWrapperMethods:
    """Test convenience wrapper methods."""

    @pytest.mark.asyncio
    async def test_list_containers_uses_portainer(self):
        """list_containers should use Portainer API."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        containers = [{"Id": "abc123", "Names": ["/test"]}]

        with patch.object(client, "get_endpoints", new_callable=AsyncMock) as mock_endpoints:
            mock_endpoints.return_value = [{"Id": 1}]

            with patch.object(client, "get_containers", new_callable=AsyncMock) as mock_containers:
                mock_containers.return_value = containers

                result = await client.list_containers()

                assert result == containers
                mock_endpoints.assert_called_once()
                mock_containers.assert_called_once()

    @pytest.mark.asyncio
    async def test_list_containers_raises_when_no_endpoints(self):
        """list_containers should raise RuntimeError when no endpoints available."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch.object(client, "get_endpoints", new_callable=AsyncMock) as mock_endpoints:
            mock_endpoints.return_value = []

            with pytest.raises(RuntimeError, match="No Portainer endpoints available"):
                await client.list_containers()

    @pytest.mark.asyncio
    async def test_inspect_container_uses_portainer(self):
        """inspect_container should use Portainer API."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        container_list = [{"Id": "abc123", "Names": ["/mycontainer"]}]
        container_detail = {"Id": "abc123", "Name": "/mycontainer", "State": {"Status": "running"}}

        with patch.object(client, "get_endpoints", new_callable=AsyncMock) as mock_endpoints:
            mock_endpoints.return_value = [{"Id": 1}]

            with patch.object(client, "get_containers", new_callable=AsyncMock) as mock_list:
                mock_list.return_value = container_list

                with patch.object(client, "get_container", new_callable=AsyncMock) as mock_detail:
                    mock_detail.return_value = container_detail

                    result = await client.inspect_container("mycontainer")

                    assert result == container_detail

    @pytest.mark.asyncio
    async def test_inspect_container_returns_none_when_not_found(self):
        """inspect_container should return None if container not found."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch.object(client, "get_endpoints", new_callable=AsyncMock) as mock_endpoints:
            mock_endpoints.return_value = [{"Id": 1}]

            with patch.object(client, "get_containers", new_callable=AsyncMock) as mock_list:
                mock_list.return_value = []  # No containers

                result = await client.inspect_container("missing_container")

                assert result is None

    @pytest.mark.asyncio
    async def test_inspect_container_raises_when_no_endpoints(self):
        """inspect_container should raise RuntimeError when no endpoints available."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch.object(client, "get_endpoints", new_callable=AsyncMock) as mock_endpoints:
            mock_endpoints.return_value = []

            with pytest.raises(RuntimeError, match="No Portainer endpoints available"):
                await client.inspect_container("container")


class TestPortainerClientStackFile:
    """Test stack file operations."""

    @pytest.mark.asyncio
    async def test_get_stack_file_returns_content(self):
        """get_stack_file should return compose YAML content."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        compose_content = "version: '3'\nservices:\n  web:\n    image: nginx"

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200
            mock_response.json.return_value = {"StackFileContent": compose_content}
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.get.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.get_stack_file(1)

            assert result == compose_content

    @pytest.mark.asyncio
    async def test_get_stack_file_returns_empty_string_if_missing(self):
        """get_stack_file should return empty string if content missing."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 200
            mock_response.json.return_value = {}
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.get.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.get_stack_file(1)

            assert result == ""


class TestPortainerClientRedeployStack:
    """Test stack redeploy operations."""

    @pytest.mark.asyncio
    async def test_redeploy_stack_without_pull(self):
        """redeploy_stack should redeploy without pulling images by default."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch.object(client, "get_stack_file", new_callable=AsyncMock) as mock_file:
            mock_file.return_value = "version: '3'"

            with patch.object(client, "get_stack", new_callable=AsyncMock) as mock_stack:
                mock_stack.return_value = {"Id": 1, "Env": [{"name": "KEY", "value": "val"}]}

                with patch("httpx.AsyncClient") as mock_client_class:
                    mock_response = MagicMock()
                    mock_response.status_code = 200
                    mock_response.json.return_value = {"Id": 1}
                    mock_response.raise_for_status = MagicMock()

                    mock_client = AsyncMock()
                    mock_client.put.return_value = mock_response
                    mock_client.__aenter__.return_value = mock_client
                    mock_client.__aexit__.return_value = None
                    mock_client_class.return_value = mock_client

                    result = await client.redeploy_stack(1, 1, pull_image=False)

                    call_args = mock_client.put.call_args
                    assert call_args[1]["json"]["pullImage"] is False
                    assert result == {"Id": 1}

    @pytest.mark.asyncio
    async def test_redeploy_stack_with_pull(self):
        """redeploy_stack should pull images when requested."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch.object(client, "get_stack_file", new_callable=AsyncMock) as mock_file:
            mock_file.return_value = "version: '3'"

            with patch.object(client, "get_stack", new_callable=AsyncMock) as mock_stack:
                mock_stack.return_value = {"Id": 1, "Env": []}

                with patch("httpx.AsyncClient") as mock_client_class:
                    mock_response = MagicMock()
                    mock_response.status_code = 200
                    mock_response.json.return_value = {"Id": 1}
                    mock_response.raise_for_status = MagicMock()

                    mock_client = AsyncMock()
                    mock_client.put.return_value = mock_response
                    mock_client.__aenter__.return_value = mock_client
                    mock_client.__aexit__.return_value = None
                    mock_client_class.return_value = mock_client

                    await client.redeploy_stack(1, 1, pull_image=True)

                    call_args = mock_client.put.call_args
                    assert call_args[1]["json"]["pullImage"] is True


class TestPortainerClientUpdateStackEnv:
    """Test stack environment variable updates."""

    @pytest.mark.asyncio
    async def test_update_stack_env_sends_env_vars(self):
        """update_stack_env should update environment variables."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        env_vars = [{"name": "DB_HOST", "value": "localhost"}]

        with patch.object(client, "get_stack_file", new_callable=AsyncMock) as mock_file:
            mock_file.return_value = "version: '3'"

            with patch("httpx.AsyncClient") as mock_client_class:
                mock_response = MagicMock()
                mock_response.status_code = 200
                mock_response.json.return_value = {"Id": 1}
                mock_response.raise_for_status = MagicMock()

                mock_client = AsyncMock()
                mock_client.put.return_value = mock_response
                mock_client.__aenter__.return_value = mock_client
                mock_client.__aexit__.return_value = None
                mock_client_class.return_value = mock_client

                await client.update_stack_env(1, 1, env_vars)

                call_args = mock_client.put.call_args
                assert call_args[1]["json"]["env"] == env_vars


class TestPortainerClientDeleteContainer:
    """Test container deletion."""

    @pytest.mark.asyncio
    async def test_delete_container_returns_true(self):
        """delete_container should return True on success."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 204
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.delete.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.delete_container(1, "abc123")

            assert result is True

    @pytest.mark.asyncio
    async def test_delete_container_with_force(self):
        """delete_container should pass force parameter."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 204
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.delete.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            await client.delete_container(1, "abc123", force=True)

            call_args = mock_client.delete.call_args
            assert call_args[1]["params"]["force"] == "true"


class TestPortainerClientRestartContainer:
    """Test container restart."""

    @pytest.mark.asyncio
    async def test_restart_container_returns_true(self):
        """restart_container should return True on success."""
        client = PortainerClient(base_url="http://portainer:9000", api_key="key")

        with patch("httpx.AsyncClient") as mock_client_class:
            mock_response = MagicMock()
            mock_response.status_code = 204
            mock_response.raise_for_status = MagicMock()

            mock_client = AsyncMock()
            mock_client.post.return_value = mock_response
            mock_client.__aenter__.return_value = mock_client
            mock_client.__aexit__.return_value = None
            mock_client_class.return_value = mock_client

            result = await client.restart_container(1, "abc123")

            assert result is True
            mock_client.post.assert_called_once()


class TestPortainerClientSingleton:
    """Test singleton pattern."""

    def test_returns_same_instance(self):
        """get_portainer_client should return singleton."""
        # Reset singleton
        import src.clients.portainer_client as module
        module._portainer_client = None

        client1 = get_portainer_client()
        client2 = get_portainer_client()

        assert client1 is client2