"""批量给 Label Studio 推预测：URL 还原与分页拉取。"""

import sys

import pytest

pytest.importorskip("requests")

sys.path.insert(0, "scripts")
import push_predictions as pp  # noqa: E402


def test_local_path_from_local_files_url(tmp_path):
    url = "/data/local-files/?d=boxes_shap_label_studio/images/blackdot_0489.png"
    assert pp.local_path(url, tmp_path) == (
        tmp_path / "boxes_shap_label_studio/images/blackdot_0489.png"
    )


def test_local_path_unquotes_escaped_names(tmp_path):
    """文件名里有中文或空格时 URL 是转义过的，得还原回来。"""
    url = "/data/local-files/?d=proj/images/%E5%8F%8D%E9%9D%A2%20a.png"
    assert pp.local_path(url, tmp_path) == tmp_path / "proj/images/反面 a.png"


def test_local_path_rejects_non_local_urls(tmp_path):
    with pytest.raises(ValueError, match="本地存储"):
        pp.local_path("https://example.com/a.png", tmp_path)


class _FakeResponse:
    def __init__(self, payload, status=200):
        self._payload = payload
        self.status_code = status

    def json(self):
        return self._payload

    def raise_for_status(self):
        if self.status_code >= 400:
            raise AssertionError(f"HTTP {self.status_code}")


class _FakeSession:
    """按页返回任务，记录请求参数。"""

    def __init__(self, pages):
        self.pages = pages
        self.headers = {}
        self.calls = []

    def get(self, url, params=None, timeout=None):
        self.calls.append(params)
        page = params["page"]
        return _FakeResponse(self.pages[page - 1] if page <= len(self.pages) else {"tasks": []})


@pytest.fixture
def client(monkeypatch):
    monkeypatch.setattr(pp, "LabelStudio", pp.LabelStudio)
    instance = pp.LabelStudio.__new__(pp.LabelStudio)
    instance.url = "http://ls"
    return instance


def test_tasks_pagination_stops_at_total(client):
    """分页要拉完再停，不能只拿第一页。"""
    client.session = _FakeSession([
        {"tasks": [{"id": 1}, {"id": 2}], "total": 3},
        {"tasks": [{"id": 3}], "total": 3},
    ])
    assert [t["id"] for t in client.tasks(39, page_size=2)] == [1, 2, 3]


def test_tasks_handles_drf_style_pagination(client):
    """有的版本返回 results/count 而不是 tasks/total。"""
    client.session = _FakeSession([
        {"results": [{"id": 1}], "count": 2},
        {"results": [{"id": 2}], "count": 2},
    ])
    assert [t["id"] for t in client.tasks(39, page_size=1)] == [1, 2]


def test_tasks_stops_on_empty_page(client):
    """没有 total 字段时，靠空页收尾，不能无限翻。"""
    client.session = _FakeSession([{"tasks": [{"id": 1}]}, {"tasks": []}])
    assert [t["id"] for t in client.tasks(39)] == [1]
    assert len(client.session.calls) == 2