"""Public attachment upload (local storage)."""
import pytest

from app.core.config import get_settings

PNG = b"\x89PNG\r\n\x1a\n" + b"\x00" * 8
PDF = b"%PDF-1.4" + b"\x00" * 16


@pytest.fixture
def local_storage_env(tmp_path, monkeypatch):
    monkeypatch.setenv("STORAGE_TYPE", "local")
    monkeypatch.setenv("LOCAL_STORAGE_DIR", str(tmp_path))
    get_settings.cache_clear()
    yield tmp_path
    get_settings.cache_clear()


def test_public_upload(client, local_storage_env):
    files = {"file": ("a.png", PNG, "image/png")}
    r = client.post(
        "/api/public/attachment/upload",
        files=files,
        data={"folder": "feedback"},
    )
    assert r.status_code == 200
    data = r.json()["data"]
    assert data["url"]
    assert data["id"]
    assert data["fileName"] == "a.png"
    assert data["size"] == len(PNG)
    assert data["url"].startswith("/uploads/feedback/")


def test_public_upload_pdf(client, local_storage_env):
    files = {"file": ("report.pdf", PDF, "application/pdf")}
    r = client.post(
        "/api/public/attachment/upload",
        files=files,
        data={"folder": "suggestion"},
    )
    assert r.status_code == 200
    data = r.json()["data"]
    assert data["fileName"] == "report.pdf"
    assert data["url"].endswith(".pdf") or ".pdf" in data["url"]


def test_public_upload_rejects_disallowed_extension(client, local_storage_env):
    files = {"file": ("malware.exe", b"MZ", "application/octet-stream")}
    r = client.post(
        "/api/public/attachment/upload",
        files=files,
        data={"folder": "feedback"},
    )
    assert r.status_code == 400
    body = r.json()
    assert body["code"] == 400
    assert "类型" in body["message"] or "格式" in body["message"] or "不支持" in body["message"]


def test_public_upload_allows_large_file(client, local_storage_env):
    # 原 20MB 限制已取消；略超原阈值仍应成功
    big = b"%PDF-1.4" + b"x" * (20 * 1024 * 1024)
    files = {"file": ("big.pdf", big, "application/pdf")}
    r = client.post(
        "/api/public/attachment/upload",
        files=files,
        data={"folder": "feedback"},
    )
    assert r.status_code == 200
    data = r.json()["data"]
    assert data["fileName"] == "big.pdf"
    assert data["size"] == len(big)


def test_public_upload_rejects_path_traversal(client, local_storage_env):
    base = local_storage_env
    outside = (base / ".." / "outside").resolve()
    assert not outside.exists()

    files = {"file": ("evil.png", PNG, "image/png")}
    r = client.post(
        "/api/public/attachment/upload",
        files=files,
        data={"folder": "../outside"},
    )
    assert r.status_code == 400
    body = r.json()
    assert body["code"] == 400
    assert "message" in body
    assert "detail" not in body
    assert not outside.exists()
    assert not any(base.rglob("*"))


def test_public_upload_rejects_qrcode_folder(client, local_storage_env):
    files = {"file": ("a.png", PNG, "image/png")}
    r = client.post(
        "/api/public/attachment/upload",
        files=files,
        data={"folder": "qrcode"},
    )
    assert r.status_code == 400
    assert r.json()["code"] == 400


def test_public_upload_allows_feedback_folder(client, local_storage_env):
    files = {"file": ("a.png", PNG, "image/png")}
    r = client.post(
        "/api/public/attachment/upload",
        files=files,
        data={"folder": "feedback"},
    )
    assert r.status_code == 200
    assert "/feedback/" in r.json()["data"]["url"]