"""v7.56.0 — Connecteurs OAuth Google / Microsoft 365 (PKCE, tokens, refresh)."""

import asyncio
import time
from pathlib import Path

import pytest
from conftest import anon_csrf

from app.db import get_conn
from app.services import oauth_connectors

ROOT = Path(__file__).resolve().parent.parent
JS_PATH = ROOT / "static" / "js" / "agent_panel_2.js"


@pytest.fixture
def configured(monkeypatch):
    """Clients OAuth fictifs (aucune clé réelle nécessaire pour les tests)."""
    from app.config import settings
    monkeypatch.setattr(settings, "google_client_id", "gid-test")
    monkeypatch.setattr(settings, "google_client_secret", "gsec-test")
    monkeypatch.setattr(settings, "ms_client_id", "mid-test")
    monkeypatch.setattr(settings, "ms_client_secret", "msec-test")
    monkeypatch.setattr(settings, "app_base_url", "https://flowdeck.example")
    return settings


def _begin(client, kind="google"):
    r = client.post(f"/api/agent/connectors/oauth/{kind}/authorize")
    assert r.status_code == 200, r.text
    return r.json()


def test_authorize_url_has_pkce_scope_and_state(client, configured):
    data = _begin(client)
    url = data["url"]
    assert url.startswith("https://accounts.google.com/o/oauth2/v2/auth?")
    assert "client_id=gid-test" in url
    assert "code_challenge=" in url and "code_challenge_method=S256" in url
    assert "drive.readonly" in url and "gmail.readonly" in url and "calendar.readonly" in url
    assert "state=" in url
    assert "redirect_uri=" in url and "api%2Fagent%2Fconnectors%2Foauth%2Fgoogle%2Fcallback" in url
    # les cookies d'état partent avec la réponse (10 min, HttpOnly)
    for key in ("fd_oauth_state_google", "fd_oauth_verifier_google", "fd_oauth_next_google"):
        assert key in client.cookies


def test_authorize_without_client_config_is_400(client):
    r = client.post("/api/agent/connectors/oauth/google/authorize")
    assert r.status_code == 400
    assert "non configuré" in r.json()["detail"]


def test_callback_saves_tokens_encrypted_and_redirects(client, configured, monkeypatch):
    _begin(client)
    state = client.cookies["fd_oauth_state_google"]

    async def fake_post(url, form=None, **kw):
        assert url == "https://oauth2.googleapis.com/token"
        assert form["grant_type"] == "authorization_code"
        assert form["code"] == "abc123"
        assert form["code_verifier"] == client.cookies["fd_oauth_verifier_google"]
        return {"access_token": "at-1", "refresh_token": "rt-1",
                "expires_in": 3600, "scope": "openid email"}

    monkeypatch.setattr(oauth_connectors, "_post_form", fake_post)
    resp = client.get(
        "/api/agent/connectors/oauth/google/callback",
        params={"code": "abc123", "state": state},
        follow_redirects=False,
    )
    assert resp.status_code == 302
    assert "oauth=connected" in resp.headers["location"]

    with get_conn() as conn:
        row = conn.execute("SELECT tokens_enc FROM connector_tokens").fetchone()
    assert row and "at-1" not in row["tokens_enc"]          # chiffré
    assert oauth_connectors.tokens("google", 1)["access_token"] == "at-1"

    status = client.get("/api/agent/connectors/oauth/google/status").json()
    assert status["connected"] is True and status["configured"] is True


def test_callback_rejects_state_mismatch(client, configured, monkeypatch):
    called = []

    async def fake_post(url, form=None, **kw):
        called.append(form)
        return {"access_token": "at"}

    monkeypatch.setattr(oauth_connectors, "_post_form", fake_post)
    resp = client.get(
        "/api/agent/connectors/oauth/google/callback",
        params={"code": "abc", "state": "forged"},   # != cookie
        follow_redirects=False,
    )
    assert resp.status_code == 302 and "oauth_error=state" in resp.headers["location"]
    assert called == []
    assert not oauth_connectors.is_connected("google", 1)


def test_callback_without_session_redirects(client, configured, monkeypatch):
    _begin(client)
    state = client.cookies["fd_oauth_state_google"]

    async def fake_post(url, form=None, **kw):
        return {"access_token": "at"}

    monkeypatch.setattr(oauth_connectors, "_post_form", fake_post)
    # on retire la SEULE session (anon_csrf effacerait aussi le cookie d'état OAuth)
    client.cookies.delete("flowdeck_session")
    client.auth = None
    resp = client.get(
        "/api/agent/connectors/oauth/google/callback",
        params={"code": "abc", "state": state},
        follow_redirects=False,
    )
    assert resp.status_code == 302 and "oauth_error=session" in resp.headers["location"]


def test_refresh_token_flow(client, configured, monkeypatch):
    oauth_connectors.save("google", 1, {
        "access_token": "old", "refresh_token": "rt-keep",
        "expires_at": int(time.time()) - 10, "scope": "openid",
    })
    calls = []

    async def fake_post(url, form=None, **kw):
        calls.append(form)
        return {"access_token": "new", "expires_in": 3600}   # pas de refresh_token

    monkeypatch.setattr(oauth_connectors, "_post_form", fake_post)
    access = asyncio.run(oauth_connectors.access_token("google", 1))
    assert access == "new"
    assert calls[0]["grant_type"] == "refresh_token"
    assert calls[0]["refresh_token"] == "rt-keep"
    stored = oauth_connectors.tokens("google", 1)
    assert stored["refresh_token"] == "rt-keep"      # conservé si absent de la réponse
    assert stored["expires_at"] > time.time()


def test_api_get_bearer_and_refuses_absolute_url(client, configured, monkeypatch):
    oauth_connectors.save("google", 1, {"access_token": "at", "refresh_token": "",
                                        "expires_at": int(time.time()) + 3600,
                                        "scope": "openid"})
    seen = []

    async def fake_get(url, headers=None):
        seen.append((url, headers))
        return 200, '{"emails": 3}'

    monkeypatch.setattr(oauth_connectors, "_api_get", fake_get)
    res = asyncio.run(oauth_connectors.api_get("google", 1, "/gmail/v1/users/me/profile"))
    assert res["status"] == "ok"
    assert seen[0][0].startswith("https://www.googleapis.com/gmail/v1/")
    assert seen[0][1]["Authorization"] == "Bearer at"

    # une URL absolue dans `path` ne doit pas dévier (hôte fixe + validation)
    res2 = asyncio.run(oauth_connectors.api_get("google", 1, "https://evil.example/x"))
    assert res2["status"] == "error"
    assert len(seen) == 1   # aucun appel réseau


def test_api_get_requires_connection(client, configured):
    res = asyncio.run(oauth_connectors.api_get("google", 1, "/me"))
    assert res["status"] == "error" and "non connecté" in res["text"]


def test_disconnect_clears_tokens(client, configured):
    oauth_connectors.save("ms365", 1, {"access_token": "at", "expires_at": 1, "scope": ""})
    assert oauth_connectors.is_connected("ms365", 1)
    r = client.post("/api/agent/connectors/oauth/ms365/disconnect")
    assert r.status_code == 200 and r.json()["status"] == "disconnected"
    assert not oauth_connectors.is_connected("ms365", 1)


def test_catalogue_marks_oauth_connectors(client, configured):
    rows = client.get("/api/agent/connectors").json()["connectors"]
    by_kind = {r["kind"]: r for r in rows if r["builtin"]}
    assert "google" in by_kind and "ms365" in by_kind
    assert by_kind["google"]["oauth"] is True
    assert by_kind["google"]["status"] == "missing"          # configuré mais pas connecté
    assert "non connecté" in by_kind["google"]["detail"]

    oauth_connectors.save("google", 1, {"access_token": "at", "expires_at": 9_999_999_999,
                                        "scope": "openid email drive"})
    rows = client.get("/api/agent/connectors").json()["connectors"]
    g = {r["kind"]: r for r in rows if r["builtin"]}["google"]
    assert g["status"] == "ok" and "connecté" in g["detail"]


def test_tool_dispatches_to_oauth_api(client, configured, monkeypatch):
    from app.services.tool_registry import ToolRegistry

    oauth_connectors.save("google", 1, {"access_token": "at", "refresh_token": "",
                                        "expires_at": int(time.time()) + 3600,
                                        "scope": "openid"})

    async def fake_get(url, headers=None):
        assert url.startswith("https://www.googleapis.com/")
        assert headers["Authorization"] == "Bearer at"
        return 200, '{"name": "Bruno"}'

    monkeypatch.setattr(oauth_connectors, "_api_get", fake_get)
    res = asyncio.run(ToolRegistry().execute(
        "connector_fetch", {"connector": "google", "path": "/oauth2/v3/userinfo"},
        user_id=1))
    assert res.status == "success"
    assert "Bruno" in res.data["text"]


def test_oauth_routes_require_session(client):
    anon_csrf(client)
    assert client.get("/api/agent/connectors/oauth/google/status").status_code == 401
    assert client.post("/api/agent/connectors/oauth/google/authorize").status_code == 401
    assert client.post("/api/agent/connectors/oauth/google/disconnect").status_code == 401
    # kind inconnu → 404 même authentifié
    assert client.post("/api/agent/connectors/oauth/dropbox/authorize").status_code == 404


def test_oauth_menu_wired():
    src = JS_PATH.read_text(encoding="utf-8")
    for token in ("'connector-connect'", "'connector-disconnect'",
                  "connectorConnect()", "connectorDisconnect()",
                  "qs.get('oauth_error')", "Connecteur connecté."):
        assert token in src, token
    assert "c.oauth" in src
    # le fournisseur revient avec `oauth=connected` (côté route)
    router = (ROOT / "app" / "routers" / "agent.py").read_text(encoding="utf-8")
    assert "oauth=connected" in router