"""Authorization regression tests for the skills router.

Skills storage is global/shared across all users, and custom skill SKILL.md
content is injected into every user's agent system prompt. The mutating skills
endpoints (and the endpoints that expose raw custom-skill content/history) must
therefore be admin-only, matching the MCP router which guards the equivalent
global extensions_config mutations with ``require_admin_user``.

These tests pin the access-control boundary: a normal authenticated
(non-admin) user must receive 403 on every guarded endpoint.
"""

from __future__ import annotations

from types import SimpleNamespace
from uuid import uuid4

from _router_auth_helpers import make_authed_test_app
from fastapi import FastAPI
from fastapi.testclient import TestClient

from app.gateway.auth.models import User
from app.gateway.deps import get_config
from app.gateway.routers import skills as skills_router


def _make_user(system_role: str) -> User:
    return User(email=f"{system_role}-test@example.com", password_hash="x", system_role=system_role, id=uuid4())


def _make_app(*, system_role: str) -> FastAPI:
    config = SimpleNamespace(
        skills=SimpleNamespace(get_skills_path=lambda: "/tmp/skills", container_path="/mnt/skills", use="deerflow.skills.storage.local_skill_storage:LocalSkillStorage"),
        skill_evolution=SimpleNamespace(enabled=True, moderation_model_name=None),
    )
    app = make_authed_test_app(user_factory=lambda: _make_user(system_role))
    app.state.config = config
    app.dependency_overrides[get_config] = lambda: config
    app.include_router(skills_router.router)
    return app


# (method, path, json_body) for every endpoint that must require admin.
# Every entry here writes/reads global shared state (the custom skills tree,
# the shared extensions_config.json, or raw global skill content), so all are
# admin-only. PUT /api/skills/{name} is included: toggling enabled writes the
# shared extensions_config.json and changes every tenant's injected skill set.
_GUARDED_ENDPOINTS = [
    ("post", "/api/skills/install", {"thread_id": "t1", "path": "mnt/user-data/outputs/x.skill"}),
    ("get", "/api/skills/custom", None),
    ("get", "/api/skills/custom/demo", None),
    ("put", "/api/skills/custom/demo", {"content": "---\nname: demo\ndescription: hijacked\n---\n"}),
    ("delete", "/api/skills/custom/demo", None),
    ("get", "/api/skills/custom/demo/history", None),
    ("post", "/api/skills/custom/demo/rollback", {"history_index": -1}),
    ("put", "/api/skills/demo", {"enabled": False}),
]


def test_non_admin_is_forbidden_on_all_mutating_skills_endpoints():
    """A normal (non-admin) authenticated user must get 403, never 200/500.

    403 proves the admin guard fired before any business logic ran. If the
    guard were missing the request would instead reach the handler and return
    200 or a 4xx/5xx from the storage layer.
    """
    app = _make_app(system_role="user")
    with TestClient(app) as client:
        for method, path, body in _GUARDED_ENDPOINTS:
            resp = getattr(client, method)(path, json=body) if body is not None else getattr(client, method)(path)
            assert resp.status_code == 403, f"{method.upper()} {path} expected 403 for non-admin, got {resp.status_code}"


def test_basic_skill_listing_stays_open_to_normal_users(monkeypatch):
    """The basic list/detail endpoints expose only name/description and are
    needed by the normal-user UI, so they must NOT be admin-gated.
    """

    def _load_skills(*, enabled_only: bool):
        from pathlib import Path

        from deerflow.skills.types import Skill

        return [
            Skill(
                name="demo",
                description="d",
                license="MIT",
                skill_dir=Path("/tmp/demo"),
                skill_file=Path("/tmp/demo/SKILL.md"),
                relative_path=Path("demo"),
                category="public",
                enabled=True,
            )
        ]

    app = _make_app(system_role="user")
    app.dependency_overrides[get_config] = lambda: SimpleNamespace()
    monkeypatch.setattr(skills_router, "get_or_new_skill_storage", lambda **kw: SimpleNamespace(load_skills=_load_skills))
    with TestClient(app) as client:
        assert client.get("/api/skills").status_code == 200
        assert client.get("/api/skills/demo").status_code == 200


def test_enable_toggle_allowed_for_admin(monkeypatch, tmp_path):
    """`PUT /api/skills/{name}` writes the shared extensions_config.json, so it
    is admin-only. This confirms the guard does not block a legitimate admin.
    """
    from pathlib import Path

    from deerflow.skills.types import Skill

    config_path = tmp_path / "extensions_config.json"

    def _load_skills(*, enabled_only: bool):
        return [
            Skill(
                name="demo",
                description="d",
                license="MIT",
                skill_dir=Path("/tmp/demo"),
                skill_file=Path("/tmp/demo/SKILL.md"),
                relative_path=Path("demo"),
                category="public",
                enabled=True,
            )
        ]

    app = _make_app(system_role="admin")
    monkeypatch.setattr(skills_router, "get_or_new_skill_storage", lambda **kw: SimpleNamespace(load_skills=_load_skills))
    monkeypatch.setattr(skills_router, "get_extensions_config", lambda: SimpleNamespace(mcp_servers={}, skills={}))
    monkeypatch.setattr(skills_router, "reload_extensions_config", lambda: None)
    monkeypatch.setattr(skills_router.ExtensionsConfig, "resolve_config_path", staticmethod(lambda: config_path))

    async def _refresh():
        return None

    monkeypatch.setattr(skills_router, "refresh_skills_system_prompt_cache_async", _refresh)
    with TestClient(app) as client:
        resp = client.put("/api/skills/demo", json={"enabled": False})
        assert resp.status_code == 200, f"admin toggle should succeed, got {resp.status_code}"