"""Content-addressed blob store (SPEC §4, §6.4)."""

from __future__ import annotations

import uuid

import pytest

from app.indexer import blobstore


@pytest.fixture(autouse=True)
def _blob_root(tmp_path, monkeypatch) -> None:  # type: ignore[no-untyped-def]
    from app.config import get_settings

    settings = get_settings()
    monkeypatch.setattr(settings, "blob_root", str(tmp_path))


def test_store_and_load_roundtrip() -> None:
    uid = uuid.uuid4()
    data = b"hello world"
    sha = blobstore.store(uid, data)
    assert blobstore.load(uid, sha) == data
    assert blobstore.exists(uid, sha)


def test_store_is_content_addressed_and_dedupes() -> None:
    uid = uuid.uuid4()
    sha1 = blobstore.store(uid, b"same payload")
    sha2 = blobstore.store(uid, b"same payload")
    assert sha1 == sha2
    # path layout: {user}/{sha[:2]}/{sha}
    path = blobstore.blob_path(uid, sha1)
    assert path.parent.name == sha1[:2]
    assert path.parent.parent.name == str(uid)


def test_different_users_isolated() -> None:
    u1, u2 = uuid.uuid4(), uuid.uuid4()
    sha = blobstore.store(u1, b"payload")
    assert blobstore.exists(u1, sha)
    assert not blobstore.exists(u2, sha)