"""Persistence contract for the independent enterprise-research workbench."""

from __future__ import annotations

from abc import ABC, abstractmethod
from typing import Any


class EnterpriseResearchTaskStore(ABC):
    """Owner-scoped task storage; evidence snapshots are DeerFlow-owned."""

    @abstractmethod
    async def list_tasks(self, user_id: str, *, limit: int = 20) -> list[dict[str, Any]]:
        raise NotImplementedError

    @abstractmethod
    async def get_task(self, task_id: str, user_id: str) -> dict[str, Any] | None:
        raise NotImplementedError

    @abstractmethod
    async def create_task(self, data: dict[str, Any]) -> dict[str, Any]:
        raise NotImplementedError

    @abstractmethod
    async def update_task(self, task_id: str, user_id: str, data: dict[str, Any]) -> dict[str, Any] | None:
        raise NotImplementedError

    @abstractmethod
    async def delete_task(self, task_id: str, user_id: str) -> bool:
        raise NotImplementedError


class EnterpriseResearchReportJobStore(ABC):
    """Owner-scoped, frozen-input jobs for enterprise report writing."""

    @abstractmethod
    async def create_job(self, data: dict[str, Any]) -> dict[str, Any]:
        raise NotImplementedError

    @abstractmethod
    async def get_job(self, job_id: str, user_id: str) -> dict[str, Any] | None:
        raise NotImplementedError

    @abstractmethod
    async def get_active_for_task(self, task_id: str, user_id: str) -> dict[str, Any] | None:
        raise NotImplementedError

    @abstractmethod
    async def claim_job(self, job_id: str, user_id: str) -> bool:
        """Atomically move one queued job to running."""
        raise NotImplementedError

    @abstractmethod
    async def requeue_job(self, job_id: str, user_id: str, *, expected_updated_at: str | None) -> bool:
        """Atomically requeue the exact running snapshot seen during recovery."""
        raise NotImplementedError

    @abstractmethod
    async def transition_job(
        self, job_id: str, user_id: str, *, expected_statuses: set[str], data: dict[str, Any]
    ) -> dict[str, Any] | None:
        """Apply a terminal/state transition only from one of the expected states."""
        raise NotImplementedError

    @abstractmethod
    async def update_job(self, job_id: str, user_id: str, data: dict[str, Any]) -> dict[str, Any] | None:
        raise NotImplementedError

    @abstractmethod
    async def list_jobs(self, task_id: str, user_id: str, *, limit: int = 10) -> list[dict[str, Any]]:
        raise NotImplementedError

    @abstractmethod
    async def list_recoverable(self, *, limit: int = 100) -> list[dict[str, Any]]:
        raise NotImplementedError