from __future__ import annotations

import queue

from browser_pool_worker import BrowserWorker


class _AlwaysFailEnsureWorker(BrowserWorker):
    def __init__(self, *, worker_id: int, task_queue: queue.Queue):
        super().__init__(worker_id=worker_id, task_queue=task_queue, pre_warm=False)
        self.ensure_calls = 0

    def _ensure_browser(self) -> bool:  # noqa: D401 - matching base naming
        self.ensure_calls += 1
        if self.ensure_calls >= 2:
            self.running = False
        return False

    def _close_browser(self):
        self.browser_instance = None


def test_requeue_task_when_browser_unavailable():
    task_queue: queue.Queue = queue.Queue()
    callback_calls: list[tuple[object, object]] = []

    def callback(result, error):
        callback_calls.append((result, error))

    task = {
        "func": lambda *_args, **_kwargs: None,
        "args": (),
        "kwargs": {},
        "callback": callback,
        "retry_count": 0,
    }

    worker = _AlwaysFailEnsureWorker(worker_id=1, task_queue=task_queue)
    worker.start()
    task_queue.put(task)
    worker.join(timeout=5)

    assert worker.is_alive() is False
    assert worker.ensure_calls == 2  # 本地最多尝试2次创建浏览器
    assert callback_calls == []  # 第一次失败会重新入队，不应立即回调失败

    requeued = task_queue.get_nowait()
    assert requeued["retry_count"] == 1


def test_fail_task_after_second_assignment():
    task_queue: queue.Queue = queue.Queue()
    callback_calls: list[tuple[object, object]] = []

    def callback(result, error):
        callback_calls.append((result, error))

    task = {
        "func": lambda *_args, **_kwargs: None,
        "args": (),
        "kwargs": {},
        "callback": callback,
        "retry_count": 1,  # 已重新分配过1次
    }

    worker = _AlwaysFailEnsureWorker(worker_id=1, task_queue=task_queue)
    worker.start()
    task_queue.put(task)
    worker.join(timeout=5)

    assert worker.is_alive() is False
    assert callback_calls == [(None, "浏览器不可用")]
    assert worker.total_tasks == 1
    assert worker.failed_tasks == 1