import pytest
from fastapi import FastAPI, Request
from fastapi.testclient import TestClient


def test_health_no_auth_required():
    from cerbero_mcp.auth import install_auth_middleware
    fa = FastAPI()
    install_auth_middleware(fa, testnet_token="t", mainnet_token="m")

    @fa.get("/health")
    def h():
        return {"ok": True}

    c = TestClient(fa)
    r = c.get("/health")
    assert r.status_code == 200


def test_apidocs_no_auth_required():
    from cerbero_mcp.auth import install_auth_middleware
    fa = FastAPI(docs_url="/apidocs")
    install_auth_middleware(fa, testnet_token="t", mainnet_token="m")

    c = TestClient(fa)
    r = c.get("/apidocs")
    assert r.status_code == 200
    r = c.get("/openapi.json")
    assert r.status_code == 200


def test_missing_authorization_header_401():
    from cerbero_mcp.auth import install_auth_middleware
    fa = FastAPI()
    install_auth_middleware(fa, testnet_token="t", mainnet_token="m")

    @fa.get("/mcp-deribit/health")
    def h():
        return {"ok": True}

    c = TestClient(fa)
    r = c.get("/mcp-deribit/health")
    assert r.status_code == 401


def test_invalid_bearer_401():
    from cerbero_mcp.auth import install_auth_middleware
    fa = FastAPI()
    install_auth_middleware(fa, testnet_token="t", mainnet_token="m")

    @fa.get("/mcp-deribit/health")
    def h():
        return {"ok": True}

    c = TestClient(fa)
    r = c.get("/mcp-deribit/health", headers={"Authorization": "Bearer wrong"})
    assert r.status_code == 401


def test_testnet_token_sets_env_testnet():
    from cerbero_mcp.auth import install_auth_middleware

    fa = FastAPI()
    install_auth_middleware(fa, testnet_token="tk_test", mainnet_token="tk_live")

    @fa.get("/mcp-deribit/peek")
    def peek(request: Request):
        return {"env": request.state.environment}

    c = TestClient(fa)
    r = c.get("/mcp-deribit/peek", headers={"Authorization": "Bearer tk_test"})
    assert r.status_code == 200
    assert r.json() == {"env": "testnet"}


def test_mainnet_token_sets_env_mainnet():
    from cerbero_mcp.auth import install_auth_middleware

    fa = FastAPI()
    install_auth_middleware(fa, testnet_token="tk_test", mainnet_token="tk_live")

    @fa.get("/mcp-deribit/peek")
    def peek(request: Request):
        return {"env": request.state.environment}

    c = TestClient(fa)
    r = c.get("/mcp-deribit/peek", headers={"Authorization": "Bearer tk_live"})
    assert r.status_code == 200
    assert r.json() == {"env": "mainnet"}


def test_uses_compare_digest():
    """Verifica che _check_token usi secrets.compare_digest (timing-safe)."""
    import inspect
    from cerbero_mcp import auth

    src = inspect.getsource(auth)
    assert "compare_digest" in src, "auth.py deve usare secrets.compare_digest"