import json
import os
from pathlib import Path

import pytest


@pytest.fixture
def tmp_pyra_home(tmp_path, monkeypatch):
    """Redirect pyra_home() to a temporary directory for isolation."""
    fake_home = tmp_path / ".pyra"

    # Patch Path.home() so pyra_home() returns our tmp dir
    monkeypatch.setattr(
        "pyra.utils.paths.Path",
        type("FakePath", (Path,), {"home": staticmethod(lambda: tmp_path)}),
    )

    # Also patch the module-level constants already computed
    import pyra.security.boundaries as b
    import pyra.memory.index as mi
    import pyra.memory.reader as mr
    import pyra.memory.writer as mw
    import pyra.vault.reader as vr
    import pyra.vault.writer as vw
    import pyra.security.injection as si
    import pyra.config.manager as cm

    b.VAULT_PATH = fake_home / "vault"
    b.BLOCKED_PREFIXES = [b.VAULT_PATH]
    mi._MEMORY_ROOT = fake_home / "memory"
    mi._INDEX_FILE = fake_home / "memory" / "MEMORY_INDEX.md"
    mr._MEMORY_ROOT = fake_home / "memory"
    mw._MEMORY_ROOT = fake_home / "memory"
    vr._KEYS_FILE = fake_home / "vault" / "secrets" / "api_keys.json"
    vw._KEYS_FILE = fake_home / "vault" / "secrets" / "api_keys.json"
    si._LOG_FILE = fake_home / "security.log"
    cm._CONFIG_PATH = fake_home / "config.yaml"

    # Bootstrap the directory structure
    from pyra.config.dirs import bootstrap
    (fake_home / "vault").mkdir(parents=True)
    (fake_home / "vault" / "secrets").mkdir()
    (fake_home / "vault" / ".vault_lock").touch(mode=0o400)
    (fake_home / "memory" / "user").mkdir(parents=True)
    (fake_home / "memory" / "context").mkdir()
    (fake_home / "memory" / "knowledge").mkdir()

    return fake_home


@pytest.fixture
def lmstudio_available():
    """Skip test if LM Studio is not reachable."""
    import httpx
    try:
        r = httpx.get("http://localhost:1234/v1/models", timeout=2.0)
        r.raise_for_status()
        return True
    except Exception:
        pytest.skip("LM Studio not reachable at localhost:1234")