src/agent/custom_views.py

# -*- coding: utf-8 -*-
# @Time    : 2025/1/2
# @Author  : wenshao
# @ProjectName: browser-use-webui
# @FileName: custom_views.py

from dataclasses import dataclass
from typing import Type
from pydantic import BaseModel, ConfigDict, Field, ValidationError, create_model
from browser_use.controller.registry.views import ActionModel
from browser_use.agent.views import AgentOutput


@dataclass
class CustomAgentStepInfo:
    step_number: int
    max_steps: int
    task: str
    add_infos: str
    memory: str
    task_progress: str


class CustomAgentBrain(BaseModel):
    """Current state of the agent"""

    prev_action_evaluation: str
    important_contents: str
    completed_contents: str
    thought: str
    summary: str


class CustomAgentOutput(AgentOutput):
    """Output model for agent

    @dev note: this model is extended with custom actions in AgentService. You can also use some fields that are not in this model as provided by the linter, as long as they are registered in the DynamicActions model.
    """

    model_config = ConfigDict(arbitrary_types_allowed=True)

    current_state: CustomAgentBrain
    action: list[ActionModel]

    @staticmethod
    def type_with_custom_actions(custom_actions: Type[ActionModel]) -> Type['CustomAgentOutput']:
        """Extend actions with custom actions"""
        return create_model(
            'AgentOutput',
            __base__=CustomAgentOutput,
            action=(list[custom_actions], Field(...)),  # Properly annotated field with no default
            __module__=CustomAgentOutput.__module__,
        )