"""Web 管理台解析任务 (services/web_jobs.py) 单元测试

模块本身只依赖标准库 + nonebot.logger，故用 importlib 按文件路径裸加载
（与 test_video_policy.py / test_video_group_file.py 同法）。fetchers 与
上传都是函数内延迟导入的注入点，这里全部塞假实现 —— 不碰网络、不碰 S3。
`platform_of` 走 `..policy` 的包内相对导入，裸加载下不可用，测试里一并替换。
"""

import asyncio
import importlib.util
import subprocess
import sys
import time
from pathlib import Path

import pytest

_MODULE_PATH = (
    Path(__file__).resolve().parents[1]
    / "hexi"
    / "plugins"
    / "nonebot_plugin_video_analysis"
    / "services"
    / "web_jobs.py"
)


@pytest.fixture(scope="module")
def wj():
    """以独立模块名加载 web_jobs.py，避免与插件包 __init__ 冲突"""
    spec = importlib.util.spec_from_file_location(
        "video_web_jobs_under_test", _MODULE_PATH
    )
    module = importlib.util.module_from_spec(spec)
    sys.modules[spec.name] = module
    spec.loader.exec_module(module)
    yield module
    sys.modules.pop(spec.name, None)


@pytest.fixture
def manager(wj, monkeypatch):
    """造一个依赖全注入的 JobManager（fetch / upload / poster / policy 都传进来）"""
    monkeypatch.setattr(wj, "platform_of", lambda url: "抖音")

    def build(*, fetch, upload=None, poster=None, policy=None):
        return wj.JobManager(
            fetch=fetch,
            upload=upload or _ok_upload,
            poster=poster or _fake_poster,
            policy=policy or (lambda: None),
        )

    return build


async def _fake_poster(video):
    """假抽帧：真的写一个封面文件出来（上传那一环会 stat 它）"""
    out = video.with_name(f"{video.stem}_封面.jpg")
    out.write_bytes(b"fake-jpeg")
    return out


async def _no_poster(video):
    return None


# ─────────────────────────── 假实现 ───────────────────────────


async def _ok_upload(path, policy):
    return f"http://lan/{path.name}", None


def _touch(directory: Path, name: str, content: bytes = b"x") -> Path:
    directory.mkdir(parents=True, exist_ok=True)
    path = directory / name
    path.write_bytes(content)
    return path


def _ok_fetch(*paths, title="作品"):
    async def fetch(url):
        return title, [Path(p) for p in paths], len(paths) > 1

    return fetch


async def _settle(mgr, timeout=5.0):
    """等所有任务进入终态，返回 list_jobs() 的结果。"""
    deadline = time.monotonic() + timeout
    while True:
        jobs = mgr.list_jobs()
        if jobs and all(not j.active for j in jobs):
            return jobs
        if time.monotonic() > deadline:
            raise AssertionError("任务没有在超时内结束")
        await asyncio.sleep(0.01)


# ─────────────────────── URL 提取 / 文件类型 ───────────────────────


def test_extract_urls_from_multiline_text(wj):
    text = (
        "看看这个 https://v.douyin.com/abc123。\n"
        "还有 https://b23.tv/xyz，https://v.douyin.com/abc123（重复的只留一条）"
    )
    assert wj.extract_urls(text) == [
        "https://v.douyin.com/abc123",
        "https://b23.tv/xyz",
    ]


def test_extract_urls_keeps_query_string(wj):
    """小红书 xsec_token / 抖音带参数的分享链，query 不能被截掉"""
    url = "https://www.xiaohongshu.com/explore/abc?xsec_token=XYZ&xsec_source=pc_feed"
    assert wj.extract_urls(f"看这个 {url}") == [url]


def test_extract_urls_without_links(wj):
    assert wj.extract_urls("这里没有链接，纯文本一段") == []
    assert wj.extract_urls("") == []


def test_kind_of(wj):
    assert wj.kind_of("001.JPG") == "image"
    assert wj.kind_of(Path("作品.mp4")) == "video"
    assert wj.kind_of("note.txt") == "file"


# ───────────────────────── 提交与复用 ─────────────────────────


async def test_same_url_reuses_active_job(wj, manager, tmp_path):
    """同 URL 连点两次不能起两个任务（抖音双开浏览器 + 落盘路径撞车）"""
    calls: list[str] = []

    async def fetch(url):
        calls.append(url)
        await asyncio.sleep(0.05)  # 保持 running，让第二次提交能命中
        return "作品", [_touch(tmp_path, "a.jpg")], False

    mgr = manager(fetch=fetch)
    url = "https://v.douyin.com/abc123"
    first = (await mgr.submit([url]))[0]
    second = (await mgr.submit([url]))[0]

    assert first.id == second.id
    assert first.platform == "抖音"
    await _settle(mgr)
    assert calls == [url]

    # 跑完之后再提交同一条 → 是新任务（复用只针对在跑的）
    third = (await mgr.submit([url]))[0]
    assert third.id != first.id


async def test_force_creates_new_job(wj, manager, tmp_path):
    calls: list[str] = []

    async def fetch(url):
        calls.append(url)
        await asyncio.sleep(0.05)
        return "作品", [_touch(tmp_path, "a.jpg")], False

    mgr = manager(fetch=fetch)
    url = "https://v.douyin.com/abc123"
    old = (await mgr.submit([url]))[0]
    new = (await mgr.submit([url], force=True))[0]

    assert new.id != old.id
    jobs = await _settle(mgr)
    assert len(calls) == 2 and len(jobs) == 2


async def test_batch_submit_keeps_input_order(wj, manager, tmp_path):
    mgr = manager(fetch=_ok_fetch(_touch(tmp_path, "a.jpg")))
    jobs = await mgr.submit(["https://a/1", "https://a/2", "https://a/3"])
    assert [j.url for j in jobs] == ["https://a/1", "https://a/2", "https://a/3"]
    await _settle(mgr)


# ───────────────────────── 失败与超时 ─────────────────────────


async def test_no_media_marks_job_failed(wj, manager):
    async def fetch(url):
        return None, [], False

    mgr = manager(fetch=fetch)
    url = "https://v.douyin.com/gone"
    (await mgr.submit([url]))[0]

    job = (await _settle(mgr))[0]
    assert job.status == "failed"
    assert "无法解析到媒体" in job.error
    assert job.title == url  # 没标题时退回 URL，前端不至于只显示空白


async def test_fetch_exception_marks_job_failed(wj, manager):
    async def fetch(url):
        raise RuntimeError("被风控了")

    mgr = manager(fetch=fetch)
    (await mgr.submit(["https://v.douyin.com/x"]))[0]

    job = (await _settle(mgr))[0]
    assert job.status == "failed" and job.error == "被风控了"


async def test_job_timeout(wj, manager, monkeypatch):
    monkeypatch.setattr(wj, "JOB_TIMEOUT", 0.05)

    async def fetch(url):
        await asyncio.sleep(5)

    mgr = manager(fetch=fetch)
    (await mgr.submit(["https://v.douyin.com/slow"]))[0]

    job = (await _settle(mgr))[0]
    assert job.status == "failed" and "解析超时" in job.error


# ───────────────────────── 上传 ─────────────────────────


async def test_single_upload_failure_does_not_fail_job(wj, manager, tmp_path):
    """多图作品挂一张 → 只标那一张，其余照常出链接"""
    files = [_touch(tmp_path, "001.jpg"), _touch(tmp_path, "002.jpg")]

    async def upload(path, policy):
        if path.name == "002.jpg":
            raise RuntimeError("S3 连接超时")
        return "http://lan/001.jpg?sig=1", "https://pub/001.jpg"

    mgr = manager(fetch=_ok_fetch(*files), upload=upload)
    (await mgr.submit(["https://v.douyin.com/x"]))[0]

    job = (await _settle(mgr))[0]
    assert job.status == "done"
    assert job.files[0]["local_url"].endswith("sig=1")
    assert job.files[0]["public_url"] == "https://pub/001.jpg"
    assert job.files[0]["error"] == ""
    assert "S3 连接超时" in job.files[1]["error"]
    assert job.files[1]["kind"] == "image" and job.files[1]["size"] == 1


async def test_upload_without_links_is_marked(wj, manager, tmp_path):
    async def upload(path, policy):
        return "", None  # s3.py 失败时就是返回空串

    mgr = manager(fetch=_ok_fetch(_touch(tmp_path, "a.mp4")), upload=upload)
    (await mgr.submit(["https://v.douyin.com/x"]))[0]

    job = (await _settle(mgr))[0]
    assert job.status == "done" and "上传失败" in job.files[0]["error"]
    assert job.files[0]["kind"] == "video"


async def test_upload_gets_default_policy(wj, manager, tmp_path):
    """存储链路按默认策略走：policy 原样传给 upload_with_plan"""
    seen: list = []
    sentinel = object()

    async def upload(path, policy):
        seen.append(policy)
        return "http://lan/a.jpg", None

    mgr = manager(
        fetch=_ok_fetch(_touch(tmp_path, "a.jpg")),
        upload=upload,
        policy=lambda: sentinel,
    )
    (await mgr.submit(["https://v.douyin.com/x"]))[0]
    await _settle(mgr)
    assert seen == [sentinel]


# ───────────────────────── 刷新链接 ─────────────────────────


async def test_refresh_reruns_upload(wj, manager, tmp_path):
    files = [_touch(tmp_path, "001.jpg"), _touch(tmp_path, "002.jpg")]
    links = iter(
        [
            "http://lan/a?sig=1",
            "http://lan/b?sig=1",
            "http://lan/a?sig=2",
            "http://lan/b?sig=2",
        ]
    )

    async def upload(path, policy):
        return next(links), None

    mgr = manager(fetch=_ok_fetch(*files), upload=upload)
    job = (await mgr.submit(["https://v.douyin.com/x"]))[0]
    job = (await _settle(mgr))[0]
    assert [f["local_url"] for f in job.files] == [
        "http://lan/a?sig=1",
        "http://lan/b?sig=1",
    ]

    refreshed = await mgr.refresh(job.id)
    assert refreshed is not None
    assert [f["local_url"] for f in refreshed.files] == [
        "http://lan/a?sig=2",
        "http://lan/b?sig=2",
    ]


async def test_refresh_marks_files_gone_from_disk(wj, manager, tmp_path):
    """temp 被 cleanup 清掉后再点刷新 → 只标文件没了，不炸"""
    path = _touch(tmp_path, "001.jpg")

    async def upload(p, policy):
        return "http://lan/a.jpg", None

    mgr = manager(fetch=_ok_fetch(path), upload=upload)
    (await mgr.submit(["https://v.douyin.com/x"]))[0]
    job = (await _settle(mgr))[0]

    path.unlink()
    refreshed = await mgr.refresh(job.id)
    assert refreshed is not None
    assert "本地文件不存在" in refreshed.files[0]["error"]
    assert refreshed.files[0]["local_url"] == ""


async def test_refresh_unknown_job_returns_none(wj, manager):
    mgr = manager(fetch=_ok_fetch())
    assert await mgr.refresh("nope") is None

    async def fetch(url):
        return None, [], False

    (await mgr.submit(["https://a/nothing"]))[0]
    job = (await _settle(mgr))[0]
    assert job.files == []
    assert await mgr.refresh(job.id) is None


# ───────────────────────── 封面 ─────────────────────────


async def test_cover_is_first_image(wj, manager, tmp_path):
    """图文作品：封面直接取第一张图，不抽帧"""
    poster_calls: list = []

    async def poster(video):
        poster_calls.append(video)
        return await _fake_poster(video)

    files = [_touch(tmp_path, "001.jpg"), _touch(tmp_path, "002.jpg")]
    mgr = manager(fetch=_ok_fetch(*files), poster=poster)
    (await mgr.submit(["https://v.douyin.com/x"]))[0]

    job = (await _settle(mgr))[0]
    assert job.cover_url == "http://lan/001.jpg"
    assert poster_calls == []


async def test_cover_is_extracted_for_video_only_post(wj, manager, tmp_path):
    """纯视频作品：抽第一帧、上传、当封面"""
    uploaded: list[str] = []

    async def upload(path, policy):
        uploaded.append(path.name)
        return f"http://lan/{path.name}", None

    mgr = manager(fetch=_ok_fetch(_touch(tmp_path, "作品.mp4")), upload=upload)
    (await mgr.submit(["https://v.douyin.com/x"]))[0]

    job = (await _settle(mgr))[0]
    assert job.cover_url == "http://lan/作品_封面.jpg"
    assert uploaded == ["作品.mp4", "作品_封面.jpg"]
    assert job.poster_path is not None and job.poster_path.exists()
    # 封面是单独的文件，不能混进 files（否则播放器里会多出一个"文件"）
    assert [f["name"] for f in job.files] == ["作品.mp4"]


async def test_cover_prefers_image_over_video_in_mixed_post(wj, manager, tmp_path):
    """混排（图 + 视频）：按用户定的规则取第一张图"""
    files = [_touch(tmp_path, "图文.jpg"), _touch(tmp_path, "动图.mp4")]
    mgr = manager(fetch=_ok_fetch(*files))
    (await mgr.submit(["https://v.douyin.com/x"]))[0]

    job = (await _settle(mgr))[0]
    assert job.cover_url == "http://lan/图文.jpg"
    assert job.poster_path is None


async def test_poster_failure_keeps_job_done(wj, manager, tmp_path):
    """抽帧失败 → 封面留空，任务照常完成"""
    mgr = manager(fetch=_ok_fetch(_touch(tmp_path, "作品.mp4")), poster=_no_poster)
    (await mgr.submit(["https://v.douyin.com/x"]))[0]

    job = (await _settle(mgr))[0]
    assert job.status == "done"
    assert job.cover_url == "" and job.poster_path is None


async def test_make_poster_extracts_real_frame(wj, tmp_path, monkeypatch):
    """真跑一次 ffmpeg：确认真能抽出 JPEG（假 poster 只覆盖接缝，覆盖不到命令本身）"""
    ffmpeg = Path(__file__).resolve().parents[1] / ".venv" / "Scripts" / "ffmpeg.exe"
    if not ffmpeg.exists():
        pytest.skip("没有 .venv/Scripts/ffmpeg.exe")
    monkeypatch.setattr(wj, "ffmpeg_path", lambda: str(ffmpeg))

    video = tmp_path / "作品.mp4"
    subprocess.run(
        [str(ffmpeg), "-f", "lavfi", "-i", "testsrc=size=320x240:rate=10",
         "-t", "2", "-pix_fmt", "yuv420p", "-y", str(video)],
        capture_output=True, check=True,
    )

    poster = await wj.make_poster(video)
    assert poster is not None
    assert poster.name == "作品_封面.jpg"
    assert poster.read_bytes()[:2] == b"\xff\xd8"  # JPEG magic


async def test_make_poster_falls_back_to_first_frame(wj, tmp_path, monkeypatch):
    """不足 1 秒的视频取不到"第 1 秒"那一帧，要退回第 0 秒再试"""
    ffmpeg = Path(__file__).resolve().parents[1] / ".venv" / "Scripts" / "ffmpeg.exe"
    if not ffmpeg.exists():
        pytest.skip("没有 .venv/Scripts/ffmpeg.exe")
    monkeypatch.setattr(wj, "ffmpeg_path", lambda: str(ffmpeg))

    video = tmp_path / "短片.mp4"
    subprocess.run(
        [str(ffmpeg), "-f", "lavfi", "-i", "testsrc=size=160x120:rate=10",
         "-t", "0.5", "-pix_fmt", "yuv420p", "-y", str(video)],
        capture_output=True, check=True,
    )

    poster = await wj.make_poster(video)
    assert poster is not None and poster.stat().st_size > 0


async def test_make_poster_missing_video_returns_none(wj, tmp_path, monkeypatch):
    ffmpeg = Path(__file__).resolve().parents[1] / ".venv" / "Scripts" / "ffmpeg.exe"
    if not ffmpeg.exists():
        pytest.skip("没有 .venv/Scripts/ffmpeg.exe")
    monkeypatch.setattr(wj, "ffmpeg_path", lambda: str(ffmpeg))

    assert await wj.make_poster(tmp_path / "不存在.mp4") is None


async def test_refresh_refreshes_cover(wj, manager, tmp_path):
    """刷新链接时封面一起换新（否则卡片封面 1 小时后变裂图）"""
    links = iter(["http://lan/a?sig=1", "http://lan/p?sig=1", "http://lan/a?sig=2", "http://lan/p?sig=2"])

    async def upload(path, policy):
        return next(links), None

    mgr = manager(fetch=_ok_fetch(_touch(tmp_path, "作品.mp4")), upload=upload)
    (await mgr.submit(["https://v.douyin.com/x"]))[0]
    job = (await _settle(mgr))[0]
    assert job.cover_url == "http://lan/p?sig=1"

    refreshed = await mgr.refresh(job.id)
    assert refreshed is not None
    assert refreshed.cover_url == "http://lan/p?sig=2"


# ───────────────────────── 清理 ─────────────────────────


async def test_remove_job(wj, manager, tmp_path):
    mgr = manager(fetch=_ok_fetch(_touch(tmp_path, "a.jpg")))
    job = (await mgr.submit(["https://v.douyin.com/x"]))[0]
    await _settle(mgr)

    assert mgr.remove(job.id) is True
    assert mgr.list_jobs() == []
    assert mgr.remove(job.id) is False  # 再删一次：不存在


async def test_remove_running_job_cancels_it(wj, manager, tmp_path):
    """删掉在跑的任务要顺手取消，不能让它继续跑完再写回任务表"""
    started = asyncio.Event()
    cancelled = asyncio.Event()

    async def fetch(url):
        started.set()
        try:
            await asyncio.sleep(30)
        except asyncio.CancelledError:
            cancelled.set()
            raise
        return "作品", [_touch(tmp_path, "a.jpg")], False

    mgr = manager(fetch=fetch)
    job = (await mgr.submit(["https://v.douyin.com/x"]))[0]
    await asyncio.wait_for(started.wait(), timeout=2)

    assert mgr.remove(job.id) is True
    await asyncio.wait_for(cancelled.wait(), timeout=2)
    assert mgr.list_jobs() == []


async def test_clear_finished_keeps_running(wj, manager, tmp_path):
    release = asyncio.Event()

    async def fetch(url):
        if "slow" in url:
            await release.wait()
        return "作品", [_touch(tmp_path, "a.jpg")], False

    mgr = manager(fetch=fetch)
    fast = (await mgr.submit(["https://v.douyin.com/fast"]))[0]
    slow = (await mgr.submit(["https://v.douyin.com/slow"]))[0]
    for _ in range(500):
        if not fast.active:
            break
        await asyncio.sleep(0.01)

    assert mgr.clear_finished() == 1
    assert [j.id for j in mgr.list_jobs()] == [slow.id]

    release.set()
    await _settle(mgr)


# ───────────────────────── 上限与回收 ─────────────────────────


async def test_job_count_is_capped(wj, manager, tmp_path, monkeypatch):
    monkeypatch.setattr(wj, "MAX_JOBS", 3)
    mgr = manager(fetch=_ok_fetch(_touch(tmp_path, "a.jpg")))

    await mgr.submit([f"https://v.douyin.com/{i}" for i in range(6)])
    jobs = await _settle(mgr)
    assert len(jobs) == 3


async def test_expired_terminal_jobs_are_pruned(wj, manager, tmp_path):
    mgr = manager(fetch=_ok_fetch(_touch(tmp_path, "a.jpg")))
    job = (await mgr.submit(["https://v.douyin.com/x"]))[0]
    await _settle(mgr)
    assert len(mgr.list_jobs()) == 1

    job.updated_at -= wj.TERMINAL_TTL + 1
    assert mgr.list_jobs() == []


async def test_running_jobs_survive_prune(wj, manager, monkeypatch):
    """在跑的任务不受上限/TTL 影响（TTL 设为负数，终态一律该清掉）"""
    monkeypatch.setattr(wj, "TERMINAL_TTL", -1)
    release = asyncio.Event()

    async def fetch(url):
        await release.wait()
        return None, [], False

    mgr = manager(fetch=fetch)
    job = (await mgr.submit(["https://v.douyin.com/x"]))[0]
    await asyncio.sleep(0.05)

    assert [j.id for j in mgr.list_jobs()] == [job.id]
    assert job.status == "running" and job.stage == "解析中"

    release.set()
    # 终态任务会被 TTL=-1 立即回收，所以这里盯 job 本身而不是 list_jobs()
    for _ in range(500):
        if not job.active:
            break
        await asyncio.sleep(0.01)
    assert job.status == "failed"