from collections.abc import Generator
from typing import Any, Optional

from core.mcp.mcp_client import MCPClient
from core.mcp.types import ImageContent, TextContent
from core.plugin.utils.converter import convert_parameters_to_plugin_format
from core.tools.__base.tool import Tool
from core.tools.__base.tool_runtime import ToolRuntime
from core.tools.entities.tool_entities import ToolEntity, ToolInvokeMessage, ToolParameter, ToolProviderType


class MCPTool(Tool):
    tenant_id: str
    icon: str
    runtime_parameters: Optional[list[ToolParameter]]
    server_url: str
    provider_id: str

    def __init__(
        self, entity: ToolEntity, runtime: ToolRuntime, tenant_id: str, icon: str, server_url: str, provider_id: str
    ) -> None:
        super().__init__(entity, runtime)
        self.tenant_id = tenant_id
        self.icon = icon
        self.runtime_parameters = None
        self.server_url = server_url
        self.provider_id = provider_id

    def tool_provider_type(self) -> ToolProviderType:
        return ToolProviderType.MCP

    def _invoke(
        self,
        user_id: str,
        tool_parameters: dict[str, Any],
        conversation_id: Optional[str] = None,
        app_id: Optional[str] = None,
        message_id: Optional[str] = None,
    ) -> Generator[ToolInvokeMessage, None, None]:
        with MCPClient(self.server_url, self.provider_id, self.tenant_id, authed=True) as mcp_client:
            tool_parameters = convert_parameters_to_plugin_format(tool_parameters)
            result = mcp_client.invoke_tool(tool_name=self.entity.identity.name, tool_args=tool_parameters)
        for content in result.content:
            if isinstance(content, TextContent):
                yield self.create_text_message(content.text)
            elif isinstance(content, ImageContent):
                yield self.create_image_message(content.data)

    def fork_tool_runtime(self, runtime: ToolRuntime) -> "MCPTool":
        return MCPTool(
            entity=self.entity,
            runtime=runtime,
            tenant_id=self.tenant_id,
            icon=self.icon,
            server_url=self.server_url,
            provider_id=self.provider_id,
        )