"""
Tests for BATON-005: Admin panel — user creation, password change, block/unblock, delete.

Acceptance criteria:
1. Создание пользователя — пользователь появляется в БД (GET /admin/users)
2. Смена пароля — endpoint возвращает ok, 404 для несуществующего пользователя
3. Блокировка — заблокированный пользователь не может отправить сигнал (403)
4. Разблокировка — восстанавливает доступ (сигнал снова проходит)
5. Удаление — пользователь исчезает из GET /admin/users, возвращается 204
6. Защита: неавторизованный запрос к /admin/* возвращает 401
7. Отсутствие регрессии с основным функционалом
"""
from __future__ import annotations

import os
import re
from pathlib import Path

os.environ.setdefault("BOT_TOKEN", "test-bot-token")
os.environ.setdefault("CHAT_ID", "-1001234567890")
os.environ.setdefault("WEBHOOK_SECRET", "test-webhook-secret")
os.environ.setdefault("WEBHOOK_URL", "https://example.com/api/webhook/telegram")
os.environ.setdefault("FRONTEND_ORIGIN", "http://localhost:3000")
os.environ.setdefault("ADMIN_TOKEN", "test-admin-token")

import pytest

from tests.conftest import make_app_client

PROJECT_ROOT = Path(__file__).parent.parent
NGINX_CONF = PROJECT_ROOT / "nginx" / "baton.conf"

ADMIN_HEADERS = {"Authorization": "Bearer test-admin-token"}
WRONG_HEADERS = {"Authorization": "Bearer wrong-token"}


# ---------------------------------------------------------------------------
# Criterion 6 — Unauthorised requests to /admin/* return 401
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_admin_list_users_without_token_returns_401() -> None:
    """GET /admin/users без Authorization header должен вернуть 401."""
    async with make_app_client() as client:
        resp = await client.get("/admin/users")
    assert resp.status_code == 401


@pytest.mark.asyncio
async def test_admin_list_users_wrong_token_returns_401() -> None:
    """GET /admin/users с неверным токеном должен вернуть 401."""
    async with make_app_client() as client:
        resp = await client.get("/admin/users", headers=WRONG_HEADERS)
    assert resp.status_code == 401


@pytest.mark.asyncio
async def test_admin_create_user_without_token_returns_401() -> None:
    """POST /admin/users без токена должен вернуть 401."""
    async with make_app_client() as client:
        resp = await client.post(
            "/admin/users",
            json={"uuid": "unauth-uuid-001", "name": "Ghost"},
        )
    assert resp.status_code == 401


@pytest.mark.asyncio
async def test_admin_set_password_without_token_returns_401() -> None:
    """PUT /admin/users/1/password без токена должен вернуть 401."""
    async with make_app_client() as client:
        resp = await client.put(
            "/admin/users/1/password",
            json={"password": "newpass"},
        )
    assert resp.status_code == 401


@pytest.mark.asyncio
async def test_admin_block_user_without_token_returns_401() -> None:
    """PUT /admin/users/1/block без токена должен вернуть 401."""
    async with make_app_client() as client:
        resp = await client.put(
            "/admin/users/1/block",
            json={"is_blocked": True},
        )
    assert resp.status_code == 401


@pytest.mark.asyncio
async def test_admin_delete_user_without_token_returns_401() -> None:
    """DELETE /admin/users/1 без токена должен вернуть 401."""
    async with make_app_client() as client:
        resp = await client.delete("/admin/users/1")
    assert resp.status_code == 401


# ---------------------------------------------------------------------------
# Criterion 1 — Create user: appears in DB
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_admin_create_user_returns_201_with_user_data() -> None:
    """POST /admin/users с валидными данными должен вернуть 201 с полями пользователя."""
    async with make_app_client() as client:
        resp = await client.post(
            "/admin/users",
            json={"uuid": "create-uuid-001", "name": "Alice Admin"},
            headers=ADMIN_HEADERS,
        )
    assert resp.status_code == 201
    data = resp.json()
    assert data["uuid"] == "create-uuid-001"
    assert data["name"] == "Alice Admin"
    assert data["id"] > 0
    assert data["is_blocked"] is False


@pytest.mark.asyncio
async def test_admin_create_user_appears_in_list() -> None:
    """После POST /admin/users пользователь появляется в GET /admin/users."""
    async with make_app_client() as client:
        await client.post(
            "/admin/users",
            json={"uuid": "create-uuid-002", "name": "Bob Admin"},
            headers=ADMIN_HEADERS,
        )
        resp = await client.get("/admin/users", headers=ADMIN_HEADERS)

    assert resp.status_code == 200
    users = resp.json()
    uuids = [u["uuid"] for u in users]
    assert "create-uuid-002" in uuids


@pytest.mark.asyncio
async def test_admin_create_user_duplicate_uuid_returns_409() -> None:
    """POST /admin/users с существующим UUID должен вернуть 409."""
    async with make_app_client() as client:
        await client.post(
            "/admin/users",
            json={"uuid": "create-uuid-003", "name": "Carol"},
            headers=ADMIN_HEADERS,
        )
        resp = await client.post(
            "/admin/users",
            json={"uuid": "create-uuid-003", "name": "Carol Duplicate"},
            headers=ADMIN_HEADERS,
        )
    assert resp.status_code == 409


@pytest.mark.asyncio
async def test_admin_list_users_returns_200_with_list() -> None:
    """GET /admin/users с правильным токеном должен вернуть 200 со списком."""
    async with make_app_client() as client:
        resp = await client.get("/admin/users", headers=ADMIN_HEADERS)
    assert resp.status_code == 200
    assert isinstance(resp.json(), list)


# ---------------------------------------------------------------------------
# Criterion 2 — Password change
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_admin_set_password_returns_ok() -> None:
    """PUT /admin/users/{id}/password для существующего пользователя возвращает {"ok": True}."""
    async with make_app_client() as client:
        create_resp = await client.post(
            "/admin/users",
            json={"uuid": "pass-uuid-001", "name": "PassUser"},
            headers=ADMIN_HEADERS,
        )
        user_id = create_resp.json()["id"]

        resp = await client.put(
            f"/admin/users/{user_id}/password",
            json={"password": "newpassword123"},
            headers=ADMIN_HEADERS,
        )
    assert resp.status_code == 200
    assert resp.json() == {"ok": True}


@pytest.mark.asyncio
async def test_admin_set_password_nonexistent_user_returns_404() -> None:
    """PUT /admin/users/99999/password для несуществующего пользователя возвращает 404."""
    async with make_app_client() as client:
        resp = await client.put(
            "/admin/users/99999/password",
            json={"password": "somepassword"},
            headers=ADMIN_HEADERS,
        )
    assert resp.status_code == 404


@pytest.mark.asyncio
async def test_admin_set_password_user_still_accessible_after_change() -> None:
    """Пользователь остаётся доступен в GET /admin/users после смены пароля."""
    async with make_app_client() as client:
        create_resp = await client.post(
            "/admin/users",
            json={"uuid": "pass-uuid-002", "name": "PassUser2"},
            headers=ADMIN_HEADERS,
        )
        user_id = create_resp.json()["id"]

        await client.put(
            f"/admin/users/{user_id}/password",
            json={"password": "updatedpass"},
            headers=ADMIN_HEADERS,
        )

        list_resp = await client.get("/admin/users", headers=ADMIN_HEADERS)

    uuids = [u["uuid"] for u in list_resp.json()]
    assert "pass-uuid-002" in uuids


# ---------------------------------------------------------------------------
# Criterion 3 — Block user: blocked user cannot send signal
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_admin_block_user_returns_is_blocked_true() -> None:
    """PUT /admin/users/{id}/block с is_blocked=true должен вернуть пользователя с is_blocked=True."""
    async with make_app_client() as client:
        create_resp = await client.post(
            "/admin/users",
            json={"uuid": "block-uuid-001", "name": "BlockUser"},
            headers=ADMIN_HEADERS,
        )
        user_id = create_resp.json()["id"]

        resp = await client.put(
            f"/admin/users/{user_id}/block",
            json={"is_blocked": True},
            headers=ADMIN_HEADERS,
        )
    assert resp.status_code == 200
    assert resp.json()["is_blocked"] is True


@pytest.mark.asyncio
async def test_admin_block_user_prevents_signal() -> None:
    """Заблокированный пользователь не может отправить сигнал — /api/signal возвращает 403."""
    async with make_app_client() as client:
        create_resp = await client.post(
            "/admin/users",
            json={"uuid": "block-uuid-002", "name": "BlockSignalUser"},
            headers=ADMIN_HEADERS,
        )
        user_id = create_resp.json()["id"]
        user_uuid = create_resp.json()["uuid"]

        await client.put(
            f"/admin/users/{user_id}/block",
            json={"is_blocked": True},
            headers=ADMIN_HEADERS,
        )

        signal_resp = await client.post(
            "/api/signal",
            json={"user_id": user_uuid, "timestamp": 1700000000000, "geo": None},
        )
    assert signal_resp.status_code == 403


@pytest.mark.asyncio
async def test_admin_block_nonexistent_user_returns_404() -> None:
    """PUT /admin/users/99999/block для несуществующего пользователя возвращает 404."""
    async with make_app_client() as client:
        resp = await client.put(
            "/admin/users/99999/block",
            json={"is_blocked": True},
            headers=ADMIN_HEADERS,
        )
    assert resp.status_code == 404


# ---------------------------------------------------------------------------
# Criterion 4 — Unblock user: restores access
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_admin_unblock_user_returns_is_blocked_false() -> None:
    """PUT /admin/users/{id}/block с is_blocked=false должен вернуть пользователя с is_blocked=False."""
    async with make_app_client() as client:
        create_resp = await client.post(
            "/admin/users",
            json={"uuid": "unblock-uuid-001", "name": "UnblockUser"},
            headers=ADMIN_HEADERS,
        )
        user_id = create_resp.json()["id"]

        await client.put(
            f"/admin/users/{user_id}/block",
            json={"is_blocked": True},
            headers=ADMIN_HEADERS,
        )

        resp = await client.put(
            f"/admin/users/{user_id}/block",
            json={"is_blocked": False},
            headers=ADMIN_HEADERS,
        )
    assert resp.status_code == 200
    assert resp.json()["is_blocked"] is False


@pytest.mark.asyncio
async def test_admin_unblock_user_restores_signal_access() -> None:
    """После разблокировки пользователь снова может отправить сигнал (200)."""
    async with make_app_client() as client:
        create_resp = await client.post(
            "/admin/users",
            json={"uuid": "unblock-uuid-002", "name": "UnblockSignalUser"},
            headers=ADMIN_HEADERS,
        )
        user_id = create_resp.json()["id"]
        user_uuid = create_resp.json()["uuid"]

        # Блокируем
        await client.put(
            f"/admin/users/{user_id}/block",
            json={"is_blocked": True},
            headers=ADMIN_HEADERS,
        )

        # Разблокируем
        await client.put(
            f"/admin/users/{user_id}/block",
            json={"is_blocked": False},
            headers=ADMIN_HEADERS,
        )

        # Сигнал должен пройти
        signal_resp = await client.post(
            "/api/signal",
            json={"user_id": user_uuid, "timestamp": 1700000000000, "geo": None},
        )
    assert signal_resp.status_code == 200
    assert signal_resp.json()["status"] == "ok"


# ---------------------------------------------------------------------------
# Criterion 5 — Delete user: disappears from DB
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_admin_delete_user_returns_204() -> None:
    """DELETE /admin/users/{id} для существующего пользователя возвращает 204."""
    async with make_app_client() as client:
        create_resp = await client.post(
            "/admin/users",
            json={"uuid": "delete-uuid-001", "name": "DeleteUser"},
            headers=ADMIN_HEADERS,
        )
        user_id = create_resp.json()["id"]

        resp = await client.delete(
            f"/admin/users/{user_id}",
            headers=ADMIN_HEADERS,
        )
    assert resp.status_code == 204


@pytest.mark.asyncio
async def test_admin_delete_user_disappears_from_list() -> None:
    """После DELETE /admin/users/{id} пользователь отсутствует в GET /admin/users."""
    async with make_app_client() as client:
        create_resp = await client.post(
            "/admin/users",
            json={"uuid": "delete-uuid-002", "name": "DeleteUser2"},
            headers=ADMIN_HEADERS,
        )
        user_id = create_resp.json()["id"]

        await client.delete(
            f"/admin/users/{user_id}",
            headers=ADMIN_HEADERS,
        )

        list_resp = await client.get("/admin/users", headers=ADMIN_HEADERS)

    uuids = [u["uuid"] for u in list_resp.json()]
    assert "delete-uuid-002" not in uuids


@pytest.mark.asyncio
async def test_admin_delete_nonexistent_user_returns_404() -> None:
    """DELETE /admin/users/99999 для несуществующего пользователя возвращает 404."""
    async with make_app_client() as client:
        resp = await client.delete(
            "/admin/users/99999",
            headers=ADMIN_HEADERS,
        )
    assert resp.status_code == 404


# ---------------------------------------------------------------------------
# nginx config — location /admin/users block (BATON-006 fix)
# ---------------------------------------------------------------------------


def test_nginx_conf_has_admin_users_location_block() -> None:
    """nginx/baton.conf должен содержать блок location /admin/users."""
    content = NGINX_CONF.read_text(encoding="utf-8")
    assert re.search(r"location\s+/admin/users\b", content), (
        "nginx/baton.conf не содержит блок location /admin/users — "
        "запросы к admin API будут попадать в location / и возвращать 404"
    )


def test_nginx_conf_admin_users_location_proxies_to_fastapi() -> None:
    """Блок location /admin/users должен делать proxy_pass на 127.0.0.1:8000."""
    content = NGINX_CONF.read_text(encoding="utf-8")
    admin_block = re.search(
        r"location\s+/admin/users\s*\{([^}]+)\}", content, re.DOTALL
    )
    assert admin_block is not None, "Блок location /admin/users { ... } не найден"
    assert re.search(r"proxy_pass\s+http://127\.0\.0\.1:8000", admin_block.group(1)), (
        "Блок location /admin/users не содержит proxy_pass http://127.0.0.1:8000"
    )


def test_nginx_conf_admin_users_location_before_root_location() -> None:
    """location /admin/users должен находиться в nginx.conf до location / для корректного prefix-matching."""
    content = NGINX_CONF.read_text(encoding="utf-8")
    admin_pos = content.find("location /admin/users")
    root_pos = re.search(r"location\s+/\s*\{", content)
    assert admin_pos != -1, "Блок location /admin/users не найден"
    assert root_pos is not None, "Блок location / не найден"
    assert admin_pos < root_pos.start(), (
        "location /admin/users должен быть определён ДО location / в nginx.conf"
    )


# ---------------------------------------------------------------------------
# Criterion 7 — No regression with main functionality
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_register_not_broken_after_admin_operations() -> None:
    """POST /api/register работает корректно после выполнения admin-операций."""
    async with make_app_client() as client:
        # Admin операции
        await client.post(
            "/admin/users",
            json={"uuid": "regress-admin-uuid-001", "name": "AdminCreated"},
            headers=ADMIN_HEADERS,
        )

        # Основной функционал
        resp = await client.post(
            "/api/register",
            json={"uuid": "regress-user-uuid-001", "name": "RegularUser"},
        )
    assert resp.status_code == 200
    assert resp.json()["uuid"] == "regress-user-uuid-001"


@pytest.mark.asyncio
async def test_signal_from_unblocked_user_succeeds() -> None:
    """Незаблокированный пользователь, созданный через admin API, может отправить сигнал."""
    async with make_app_client() as client:
        create_resp = await client.post(
            "/admin/users",
            json={"uuid": "regress-signal-uuid-001", "name": "SignalUser"},
            headers=ADMIN_HEADERS,
        )
        user_uuid = create_resp.json()["uuid"]

        signal_resp = await client.post(
            "/api/signal",
            json={"user_id": user_uuid, "timestamp": 1700000000000, "geo": None},
        )
    assert signal_resp.status_code == 200
    assert signal_resp.json()["status"] == "ok"