# ============================================================
# 方向 F 黄金测试：轻量异步任务队列（矩阵 88 行剩余）
# 覆盖：提交/轮询/完成+结果、失败记录、取消（pending/running）、
#       取消终态返回 False、列表与统计
# ============================================================
from __future__ import annotations

import threading
import time

from server.agent_core.async_jobs import JobCancelled, JobQueue


def test_submit_poll_done_with_result():
    """提交 → 轮询 → done，result/progress/时间戳完整，poll 可重复读。"""
    q = JobQueue()
    job_id = q.submit(
        "sensitivity.recompute",
        lambda rec: {"robustness": 0.92},
        params={"strategy": "COMPREHENSIVE"},
        actor="planner",
    )
    record = q.wait(job_id, timeout=10)
    assert record["status"] == "done"
    assert record["result"] == {"robustness": 0.92}
    assert record["progress"] == 100
    assert record["params"]["strategy"] == "COMPREHENSIVE"
    assert record["actor"] == "planner"
    assert record["started_at"] and record["finished_at"]
    again = q.poll(job_id)
    assert again is not None
    assert again["status"] == "done"
    assert again["result"]["robustness"] == 0.92


def test_failed_job_records_error():
    """fn 抛异常 → failed，error 显式记录，result 为空。"""
    q = JobQueue()

    def boom(rec):
        raise RuntimeError("求解器崩溃")

    job_id = q.submit("montecarlo.recompute", boom)
    record = q.wait(job_id, timeout=10)
    assert record["status"] == "failed"
    assert record["error"] == "求解器崩溃"
    assert record["result"] is None


def test_cancel_running_job():
    """运行中任务可取消：置标记 → 终态 cancelled，结果丢弃。"""
    q = JobQueue()
    started = threading.Event()

    def long_run(rec):
        started.set()
        while not rec.cancel_requested:
            time.sleep(0.01)
        raise JobCancelled()

    job_id = q.submit("montecarlo.recompute", long_run)
    assert started.wait(timeout=5), "任务未进入运行"
    assert q.cancel(job_id) is True
    record = q.wait(job_id, timeout=10)
    assert record["status"] == "cancelled"
    assert record["result"] is None
    assert record["cancel_requested"] is True


def test_cancel_unknown_or_terminal_returns_false():
    """不存在或已终态任务取消返回 False。"""
    q = JobQueue()
    assert q.cancel("job-不存在") is False
    job_id = q.submit("t", lambda rec: 1)
    q.wait(job_id, timeout=10)
    assert q.cancel(job_id) is False
    assert q.poll(job_id)["status"] == "done"


def test_list_and_stats():
    """列表可按状态过滤，统计计数与终态一致。"""
    q = JobQueue()

    def boom(rec):
        raise RuntimeError("x")

    q.submit("a", lambda rec: 1)
    q.submit("b", boom)
    q.submit("c", lambda rec: 2)
    for item in q.list():
        q.wait(item["job_id"], timeout=10)
    stats = q.stats()
    assert stats["total"] == 3
    assert stats["done"] == 2
    assert stats["failed"] == 1
    assert stats["pending"] == 0
    failed = q.list(status="failed")
    assert len(failed) == 1 and failed[0]["kind"] == "b"