"""
Tests for web RBAC enforcement and config JSON round-trip.

Uses FastAPI TestClient with a temporary web.db.
"""

import json
import pytest


@pytest.fixture(autouse=True)
def isolated_web(tmp_path, monkeypatch):
    """Redirect web.db and runtime_config.json to tmp dirs for each test."""
    from pathlib import Path
    import web.db as db_mod
    import config as cfg_mod

    db_path = tmp_path / "web.db"
    cfg_path = tmp_path / "runtime_config.json"

    monkeypatch.setattr(db_mod, "DB_FILE", db_path)
    monkeypatch.setattr(cfg_mod, "RUNTIME_CONFIG_PATH", cfg_path)

    db_mod.init_db()


@pytest.fixture
def client():
    from fastapi.testclient import TestClient
    from web.app import create_app
    app = create_app()
    return TestClient(app, raise_server_exceptions=True)


def _login(client, username="superadmin", password="superpass") -> dict:
    """Log in and return the cookies dict."""
    r = client.post("/login", data={"username": username, "password": password},
                    follow_redirects=False)
    assert r.status_code == 303, f"Login failed: {r.text}"
    return client.cookies


# ─── Auth flow ────────────────────────────────────────────────────────────────

class TestAuthFlow:
    def test_login_sets_cookies(self, client):
        r = client.post("/login", data={"username": "superadmin", "password": "superpass"},
                        follow_redirects=False)
        assert r.status_code == 303
        assert "access_token" in r.cookies
        assert "refresh_token" in r.cookies

    def test_invalid_password_returns_401(self, client):
        r = client.post("/login", data={"username": "superadmin", "password": "wrong"},
                        follow_redirects=False)
        assert r.status_code == 401

    def test_unauthenticated_dashboard_redirected_or_401(self, client):
        r = client.get("/dashboard", follow_redirects=False)
        assert r.status_code in (401, 302, 303)

    def test_logout_clears_cookies(self, client):
        _login(client)
        r = client.post("/logout", follow_redirects=False)
        assert r.status_code == 303

    def test_authenticated_dashboard_ok(self, client):
        _login(client)
        r = client.get("/dashboard")
        assert r.status_code == 200


# ─── RBAC ─────────────────────────────────────────────────────────────────────

class TestRBAC:
    def test_reader_cannot_access_config(self, client):
        import web.db as db_mod
        db_mod.create_user("reader1", "pass", "reader")
        _login(client, "reader1", "pass")
        r = client.get("/config/keywords")
        assert r.status_code == 403

    def test_admin_can_access_config(self, client):
        import web.db as db_mod
        db_mod.create_user("admin1", "pass", "admin")
        _login(client, "admin1", "pass")
        r = client.get("/config/keywords")
        assert r.status_code == 200

    def test_reader_cannot_access_users(self, client):
        import web.db as db_mod
        db_mod.create_user("reader2", "pass", "reader")
        _login(client, "reader2", "pass")
        r = client.get("/users")
        assert r.status_code == 403

    def test_admin_cannot_access_users(self, client):
        import web.db as db_mod
        db_mod.create_user("admin2", "pass", "admin")
        _login(client, "admin2", "pass")
        r = client.get("/users")
        assert r.status_code == 403

    def test_superadmin_can_access_users(self, client):
        _login(client)
        r = client.get("/users")
        assert r.status_code == 200


# ─── Config round-trip ────────────────────────────────────────────────────────

class TestConfigRoundTrip:
    def test_put_keywords_saves_and_reloads(self, client):
        import config
        _login(client)

        groups = [
            {
                "id": "testorg",
                "name": "Test Org",
                "patterns": [
                    {"regex": r"testorg\.com", "label": "Domain"},
                    {"regex": r"@testorg\.com", "label": "Employees"},
                ],
            }
        ]
        r = client.put("/config/keywords", json={"groups": groups})
        assert r.status_code == 200
        assert r.json()["groups"] == 1

        # Config module globals updated in-process
        assert any("testorg" in kw for kw in config.TARGET_KEYWORDS)

    def test_put_keywords_invalid_regex_rejected(self, client):
        _login(client)
        groups = [
            {
                "id": "bad",
                "name": "Bad",
                "patterns": [{"regex": "[invalid(regex", "label": "oops"}],
            }
        ]
        r = client.put("/config/keywords", json={"groups": groups})
        assert r.status_code == 422

    def test_put_channels_saves(self, client):
        import config
        _login(client)
        channels = ["testchannel", -1002748707556]
        r = client.put("/config/channels", json={"channels": channels})
        assert r.status_code == 200
        assert config.WATCHED_CHANNELS == channels


# ─── User management ─────────────────────────────────────────────────────────

class TestUserManagement:
    def test_create_user(self, client):
        _login(client)
        r = client.post("/users", json={"username": "newuser", "password": "pass", "role": "reader"})
        assert r.status_code == 200
        assert "id" in r.json()

    def test_cannot_create_duplicate_username(self, client):
        _login(client)
        client.post("/users", json={"username": "dup", "password": "p", "role": "reader"})
        r = client.post("/users", json={"username": "dup", "password": "p", "role": "reader"})
        assert r.status_code == 409

    def test_update_user_role(self, client):
        import web.db as db_mod
        _login(client)
        uid = db_mod.create_user("patchme", "p", "reader")
        r = client.patch(f"/users/{uid}", json={"role": "admin"})
        assert r.status_code == 200
        assert db_mod.get_user_by_id(uid)["role"] == "admin"

    def test_deactivate_user(self, client):
        import web.db as db_mod
        _login(client)
        uid = db_mod.create_user("byebye", "p", "reader")
        r = client.delete(f"/users/{uid}")
        assert r.status_code == 200
        assert db_mod.get_user_by_id(uid)["is_active"] == 0

    def test_cannot_deactivate_self(self, client):
        import web.db as db_mod
        _login(client)
        me = db_mod.get_user_by_username("superadmin")
        r = client.delete(f"/users/{me['id']}")
        assert r.status_code == 403