"""
Phase 5 — Cloud Storage Backends test stubs.

All tests are decorated with @pytest.mark.xfail(strict=False, reason="not implemented yet").
These stubs serve as the Wave 0 Nyquist scaffold — they must xfail (not fail) until
the corresponding implementation plan turns each one green.

Requirements covered: CLOUD-01 through CLOUD-07, D-17 (SSRF), SEC-08 (IDOR/admin block).
"""
from __future__ import annotations

import pytest

pytestmark = pytest.mark.asyncio


# ── CLOUD-01: OAuth connect / WebDAV connect ──────────────────────────────────


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_connect_google_drive():
    """POST /api/cloud/google/connect returns OAuth redirect URL."""
    pytest.xfail("not implemented yet")


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_oauth_callback_valid_state():
    """GET /api/cloud/google/callback with valid state stores credentials and redirects."""
    pytest.xfail("not implemented yet")


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_oauth_callback_invalid_state():
    """GET /api/cloud/google/callback with invalid/missing state returns 400."""
    pytest.xfail("not implemented yet")


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_webdav_connect_validates():
    """POST /api/cloud/webdav/connect validates connectivity before saving credentials."""
    pytest.xfail("not implemented yet")


# ── CLOUD-02: Credential encryption round-trip ────────────────────────────────


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_credential_round_trip():
    """encrypt_credentials(decrypt_credentials(creds)) == creds (HKDF AES-256-GCM)."""
    pytest.xfail("not implemented yet")


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_credentials_enc_not_exposed():
    """GET /api/cloud/connections response body never contains credentials_enc field."""
    pytest.xfail("not implemented yet")


# ── CLOUD-03: Cloud upload path ───────────────────────────────────────────────


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_cloud_upload_no_presigned():
    """Cloud provider uploads go through the API layer, not presigned URLs."""
    pytest.xfail("not implemented yet")


# ── CLOUD-04: Connection status display ──────────────────────────────────────


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_connection_status_display():
    """GET /api/cloud/connections returns status field for each connection."""
    pytest.xfail("not implemented yet")


# ── CLOUD-05: Token expiry / invalid_grant handling ──────────────────────────


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_invalid_grant_sets_requires_reauth():
    """invalid_grant error from provider sets connection status to REQUIRES_REAUTH."""
    pytest.xfail("not implemented yet")


# ── CLOUD-06: Disconnect / credential deletion ────────────────────────────────


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_disconnect_deletes_credentials():
    """DELETE /api/cloud/connections/{id} permanently removes credentials_enc from DB."""
    pytest.xfail("not implemented yet")


# ── CLOUD-07: StorageBackend factory ─────────────────────────────────────────


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_factory_returns_correct_backend():
    """get_storage_backend(provider) returns the correct StorageBackend subclass."""
    pytest.xfail("not implemented yet")


# ── D-17 SSRF validation ──────────────────────────────────────────────────────


@pytest.mark.xfail(strict=False, reason="not implemented yet")
@pytest.mark.parametrize("url", [
    "http://192.168.1.1/webdav",   # RFC-1918
    "http://10.0.0.1/dav",         # RFC-1918
    "http://127.0.0.1/dav",        # loopback
    "http://[::1]/dav",            # IPv6 loopback
    "https://cloud.example.com/",  # valid — should not be blocked
])
async def test_ssrf_validation(url):
    """WebDAV URL validator blocks RFC-1918, loopback, and link-local addresses."""
    pytest.xfail("not implemented yet")


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_ssrf_link_local():
    """WebDAV URL validator blocks link-local addresses (169.254.x.x)."""
    pytest.xfail("not implemented yet")


# ── SEC-08 / IDOR: Admin block and cross-user access ─────────────────────────


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_admin_cannot_see_credentials():
    """Admin listing cloud connections never returns credentials_enc field."""
    pytest.xfail("not implemented yet")


@pytest.mark.xfail(strict=False, reason="not implemented yet")
async def test_cross_user_idor():
    """GET /api/cloud/connections/{id} owned by another user returns 404."""
    pytest.xfail("not implemented yet")