"""Auth tests — ACs 1-9: login, logout, me, switch-tenant, password reset, CSRF."""

from __future__ import annotations

import pytest
from httpx import AsyncClient

from tests.conftest import ORIGIN_HEADER, login_client, seed_tenant_and_users


@pytest.mark.asyncio
class TestAuthLogin:
    """ACs 1-3: Login valid, invalid, me without session."""

    async def test_login_valid_returns_200_and_cookie(self, client: AsyncClient, db_session):
        """AC 1: POST /api/v1/auth/login valid -> 200 + Set-Cookie leocrm_session."""
        await seed_tenant_and_users(db_session)
        resp = await client.post(
            "/api/v1/auth/login",
            json={"email": "admin@tenanta.com", "password": "TestPass123!"},
            headers=ORIGIN_HEADER,
        )
        assert resp.status_code == 200
        assert "leocrm_session" in resp.headers.get(
            "set-cookie", ""
        ).lower() or "leocrm_session" in str(resp.cookies)
        data = resp.json()
        assert data["email"] == "admin@tenanta.com"
        assert data["role"] == "admin"

    async def test_login_invalid_returns_401(self, client: AsyncClient, db_session):
        """AC 2: POST /api/v1/auth/login invalid -> 401."""
        await seed_tenant_and_users(db_session)
        resp = await client.post(
            "/api/v1/auth/login",
            json={"email": "admin@tenanta.com", "password": "WrongPassword!"},
            headers=ORIGIN_HEADER,
        )
        assert resp.status_code == 401

    async def test_me_without_session_returns_401(self, client: AsyncClient):
        """AC 3: GET /api/v1/auth/me without session -> 401."""
        resp = await client.get("/api/v1/auth/me")
        assert resp.status_code == 401


@pytest.mark.asyncio
class TestAuthMe:
    """AC 4: me with valid session."""

    async def test_me_with_valid_session_returns_200(self, client: AsyncClient, db_session):
        """AC 4: GET /api/v1/auth/me with valid session -> 200 + user+tenant JSON."""
        await seed_tenant_and_users(db_session)
        await login_client(client, "admin@tenanta.com")
        resp = await client.get("/api/v1/auth/me")
        assert resp.status_code == 200
        data = resp.json()
        assert data["email"] == "admin@tenanta.com"
        assert data["role"] == "admin"
        assert "tenant_id" in data
        assert "tenant_name" in data


@pytest.mark.asyncio
class TestAuthLogout:
    """AC 5: logout."""

    async def test_logout_returns_200_and_invalidates_session(
        self, client: AsyncClient, db_session
    ):
        """AC 5: POST /api/v1/auth/logout -> 200, session invalidated."""
        await seed_tenant_and_users(db_session)
        await login_client(client, "admin@tenanta.com")
        # Verify we're logged in
        resp = await client.get("/api/v1/auth/me")
        assert resp.status_code == 200
        # Logout
        resp = await client.post("/api/v1/auth/logout", headers=ORIGIN_HEADER)
        assert resp.status_code == 200
        # Verify session is invalidated
        resp = await client.get("/api/v1/auth/me")
        assert resp.status_code == 401


@pytest.mark.asyncio
class TestPasswordReset:
    """ACs 6-8: password reset request, confirm valid, confirm expired."""

    async def test_password_reset_request_always_200(self, client: AsyncClient, db_session):
        """AC 6: POST /api/v1/auth/password-reset/request -> always 200 (no user enumeration)."""
        await seed_tenant_and_users(db_session)
        # Existing email
        resp = await client.post(
            "/api/v1/auth/password-reset/request",
            json={"email": "admin@tenanta.com"},
            headers=ORIGIN_HEADER,
        )
        assert resp.status_code == 200
        # Non-existing email — still 200
        resp = await client.post(
            "/api/v1/auth/password-reset/request",
            json={"email": "nonexistent@example.com"},
            headers=ORIGIN_HEADER,
        )
        assert resp.status_code == 200

    async def test_password_reset_confirm_valid_token(self, client: AsyncClient, db_session):
        """AC 7: POST /api/v1/auth/password-reset/confirm valid token -> 200."""
        from app.services.auth_service import auth_service

        await seed_tenant_and_users(db_session)
        raw_token = await auth_service.get_password_reset_token_raw(db_session, "admin@tenanta.com")
        await db_session.commit()
        assert raw_token is not None

        resp = await client.post(
            "/api/v1/auth/password-reset/confirm",
            json={"token": raw_token, "new_password": "NewPass456!"},
            headers=ORIGIN_HEADER,
        )
        assert resp.status_code == 200

    async def test_password_reset_confirm_expired_token(self, client: AsyncClient, db_session):
        """AC 8: POST /api/v1/auth/password-reset/confirm expired token -> 400."""
        from app.services.auth_service import auth_service

        await seed_tenant_and_users(db_session)
        raw_token = await auth_service.create_expired_reset_token(db_session, "admin@tenanta.com")
        await db_session.commit()
        assert raw_token is not None

        resp = await client.post(
            "/api/v1/auth/password-reset/confirm",
            json={"token": raw_token, "new_password": "NewPass456!"},
            headers=ORIGIN_HEADER,
        )
        assert resp.status_code == 400


@pytest.mark.asyncio
class TestSwitchTenant:
    """AC 9: switch-tenant."""

    async def test_switch_tenant_returns_200(self, client: AsyncClient, db_session):
        """AC 9: POST /api/v1/auth/switch-tenant -> 200, session tenant_id updated."""
        await seed_tenant_and_users(db_session)
        await login_client(client, "admin@tenanta.com")

        # Get initial tenant
        resp = await client.get("/api/v1/auth/me")
        assert resp.status_code == 200
        initial_tenant = resp.json()["tenant_id"]

        # Get tenant B ID
        from sqlalchemy import select

        from app.models.tenant import Tenant

        q = select(Tenant).where(Tenant.slug == "tenant-b")
        result = await db_session.execute(q)
        tenant_b = result.scalar_one()

        # Switch to tenant B
        resp = await client.post(
            "/api/v1/auth/switch-tenant",
            json={"tenant_id": str(tenant_b.id)},
            headers=ORIGIN_HEADER,
        )
        assert resp.status_code == 200
        assert resp.json()["tenant_id"] == str(tenant_b.id)
        assert resp.json()["tenant_id"] != initial_tenant


@pytest.mark.asyncio
class TestCSRF:
    """AC 23: CSRF — POST without Origin header -> 403."""

    async def test_post_without_origin_returns_403(self, client: AsyncClient, db_session):
        """AC 23: POST without Origin header -> 403."""
        await seed_tenant_and_users(db_session)
        resp = await client.post(
            "/api/v1/auth/login",
            json={"email": "admin@tenanta.com", "password": "TestPass123!"},
            # No Origin header
        )
        assert resp.status_code == 403