from typing import TYPE_CHECKING

from sweagent.types import AgentInfo, StepOutput, Trajectory

if TYPE_CHECKING:
    # avoid circular import
    from sweagent.agent.agents import DefaultAgent


class AbstractAgentHook:
    def on_init(self, *, agent: "DefaultAgent"):
        """Note: Depending on the internals of `Agent` should be done with care,
        it's best to use this as little as possible.
        """

    def on_run_start(
        self,
    ): ...

    def on_step_start(self): ...

    def on_actions_generated(self, *, step: StepOutput): ...

    def on_action_started(self, *, step: StepOutput): ...

    def on_action_executed(self, *, step: StepOutput): ...

    def on_step_done(self, *, step: StepOutput, info: AgentInfo): ...

    def on_run_done(self, *, trajectory: Trajectory, info: AgentInfo): ...

    def on_setup_attempt(self): ...

    def on_model_query(self, *, messages: list[dict[str, str]], agent: str):
        """Actually query the model with the complete history."""

    def on_query_message_added(
        self,
        *,
        agent: str,
        role: str,
        content: str,
        message_type: str,
        is_demo: bool = False,
        thought: str = "",
        action: str = "",
        tool_calls: list[dict[str, str]] | None = None,
        tool_call_ids: list[str] | None = None,
    ): ...

    def on_setup_done(self): ...

    def on_tools_installation_started(self): ...


class CombinedAgentHook(AbstractAgentHook):
    def __init__(self, hooks: list[AbstractAgentHook] | None = None):
        self._hooks = hooks or []

    def add_hook(self, hook: AbstractAgentHook):
        self._hooks.append(hook)

    @property
    def hooks(self) -> list[AbstractAgentHook]:
        return self._hooks

    def on_init(self, *, agent: "DefaultAgent"):
        for hook in self.hooks:
            hook.on_init(agent=agent)

    def on_run_start(self):
        for hook in self.hooks:
            hook.on_run_start()

    def on_step_start(self):
        for hook in self.hooks:
            hook.on_step_start()

    def on_actions_generated(self, *, step: StepOutput):
        for hook in self.hooks:
            hook.on_actions_generated(step=step)

    def on_action_started(self, *, step: StepOutput):
        for hook in self.hooks:
            hook.on_action_started(step=step)

    def on_action_executed(self, *, step: StepOutput):
        for hook in self.hooks:
            hook.on_action_executed(step=step)

    def on_step_done(self, *, step: StepOutput, info: AgentInfo):
        for hook in self.hooks:
            hook.on_step_done(step=step, info=info)

    def on_run_done(self, *, trajectory: Trajectory, info: AgentInfo):
        for hook in self.hooks:
            hook.on_run_done(trajectory=trajectory, info=info)

    def on_setup_attempt(self):
        for hook in self.hooks:
            hook.on_setup_attempt()

    def on_model_query(self, *, messages: list[dict[str, str]], agent: str):
        for hook in self.hooks:
            hook.on_model_query(messages=messages, agent=agent)

    def on_query_message_added(
        self,
        *,
        agent: str,
        role: str,
        content: str,
        message_type: str,
        is_demo: bool = False,
        thought: str = "",
        action: str = "",
        tool_calls: list[dict[str, str]] | None = None,
        tool_call_ids: list[str] | None = None,
    ):
        for hook in self.hooks:
            hook.on_query_message_added(
                agent=agent,
                role=role,
                content=content,
                message_type=message_type,
                is_demo=is_demo,
                thought=thought,
                action=action,
                tool_calls=tool_calls,
                tool_call_ids=tool_call_ids,
            )

    def on_setup_done(self):
        # return super().on_setup_done()
        for hook in self.hooks:
            hook.on_setup_done()

    def on_tools_installation_started(self):
        for hook in self.hooks:
            hook.on_tools_installation_started()
