"""Tests for authentication endpoints.

Note: Registration now requires an invite code. Tests that need to register
users will create invites first via the helper function.
"""
import pytest

from auth import COOKIE_NAME
from tests.helpers import unique_email, create_invite_for_registration


# Registration tests (with invite)
@pytest.mark.asyncio
async def test_register_success(client_factory):
    """Can register with valid invite code."""
    email = unique_email("register")
    
    # Create invite
    async with client_factory.get_db_session() as db:
        invite_code = await create_invite_for_registration(db, unique_email("godfather"))
    
    response = await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "password123",
            "invite_identifier": invite_code,
        },
    )
    assert response.status_code == 200
    data = response.json()
    assert data["email"] == email
    assert "id" in data
    assert "roles" in data
    assert "permissions" in data
    # New users get regular role by default
    assert "regular" in data["roles"]
    # Cookie should be set
    assert COOKIE_NAME in response.cookies


@pytest.mark.asyncio
async def test_register_duplicate_email(client_factory):
    """Cannot register with already-used email."""
    email = unique_email("duplicate")
    
    # Create two invites
    async with client_factory.get_db_session() as db:
        invite1 = await create_invite_for_registration(db, unique_email("gf1"))
        invite2 = await create_invite_for_registration(db, unique_email("gf2"))
    
    # First registration
    await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "password123",
            "invite_identifier": invite1,
        },
    )
    
    # Second registration with same email
    response = await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "differentpass",
            "invite_identifier": invite2,
        },
    )
    assert response.status_code == 400
    assert response.json()["detail"] == "Email already registered"


@pytest.mark.asyncio
async def test_register_invalid_email(client_factory):
    """Cannot register with invalid email format."""
    async with client_factory.get_db_session() as db:
        invite_code = await create_invite_for_registration(db, unique_email("gf"))
    
    response = await client_factory.post(
        "/api/auth/register",
        json={
            "email": "notanemail",
            "password": "password123",
            "invite_identifier": invite_code,
        },
    )
    assert response.status_code == 422


@pytest.mark.asyncio
async def test_register_missing_password(client):
    """Cannot register without password."""
    response = await client.post(
        "/api/auth/register",
        json={"email": unique_email(), "invite_identifier": "some-code-00"},
    )
    assert response.status_code == 422


@pytest.mark.asyncio
async def test_register_missing_email(client):
    """Cannot register without email."""
    response = await client.post(
        "/api/auth/register",
        json={"password": "password123", "invite_identifier": "some-code-00"},
    )
    assert response.status_code == 422


@pytest.mark.asyncio
async def test_register_missing_invite(client):
    """Cannot register without invite code."""
    response = await client.post(
        "/api/auth/register",
        json={"email": unique_email(), "password": "password123"},
    )
    assert response.status_code == 422


@pytest.mark.asyncio
async def test_register_empty_body(client):
    """Cannot register with empty body."""
    response = await client.post("/api/auth/register", json={})
    assert response.status_code == 422


# Login tests
@pytest.mark.asyncio
async def test_login_success(client_factory):
    """Can login with valid credentials."""
    email = unique_email("login")
    
    async with client_factory.get_db_session() as db:
        invite_code = await create_invite_for_registration(db, unique_email("gf"))
    
    await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "password123",
            "invite_identifier": invite_code,
        },
    )
    response = await client_factory.post(
        "/api/auth/login",
        json={"email": email, "password": "password123"},
    )
    assert response.status_code == 200
    data = response.json()
    assert data["email"] == email
    assert "roles" in data
    assert "permissions" in data
    assert COOKIE_NAME in response.cookies


@pytest.mark.asyncio
async def test_login_wrong_password(client_factory):
    """Cannot login with wrong password."""
    email = unique_email("wrongpass")
    
    async with client_factory.get_db_session() as db:
        invite_code = await create_invite_for_registration(db, unique_email("gf"))
    
    await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "correctpassword",
            "invite_identifier": invite_code,
        },
    )
    response = await client_factory.post(
        "/api/auth/login",
        json={"email": email, "password": "wrongpassword"},
    )
    assert response.status_code == 401
    assert response.json()["detail"] == "Incorrect email or password"


@pytest.mark.asyncio
async def test_login_nonexistent_user(client):
    """Cannot login with non-existent user."""
    response = await client.post(
        "/api/auth/login",
        json={"email": unique_email("nonexistent"), "password": "password123"},
    )
    assert response.status_code == 401
    assert response.json()["detail"] == "Incorrect email or password"


@pytest.mark.asyncio
async def test_login_invalid_email_format(client):
    """Cannot login with invalid email format."""
    response = await client.post(
        "/api/auth/login",
        json={"email": "invalidemail", "password": "password123"},
    )
    assert response.status_code == 422


@pytest.mark.asyncio
async def test_login_missing_fields(client):
    """Cannot login with missing fields."""
    response = await client.post("/api/auth/login", json={})
    assert response.status_code == 422


# Get current user tests
@pytest.mark.asyncio
async def test_get_me_success(client_factory):
    """Can get current user info when authenticated."""
    email = unique_email("me")
    
    async with client_factory.get_db_session() as db:
        invite_code = await create_invite_for_registration(db, unique_email("gf"))
    
    reg_response = await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "password123",
            "invite_identifier": invite_code,
        },
    )
    cookies = dict(reg_response.cookies)
    
    async with client_factory.create(cookies=cookies) as authed:
        response = await authed.get("/api/auth/me")
    
    assert response.status_code == 200
    data = response.json()
    assert data["email"] == email
    assert "id" in data
    assert "roles" in data
    assert "permissions" in data


@pytest.mark.asyncio
async def test_get_me_no_cookie(client):
    """Cannot get current user without auth cookie."""
    response = await client.get("/api/auth/me")
    assert response.status_code == 401


@pytest.mark.asyncio
async def test_get_me_invalid_cookie(client_factory):
    """Cannot get current user with invalid cookie."""
    async with client_factory.create(cookies={COOKIE_NAME: "invalidtoken123"}) as authed:
        response = await authed.get("/api/auth/me")
    assert response.status_code == 401
    assert response.json()["detail"] == "Invalid authentication credentials"


@pytest.mark.asyncio
async def test_get_me_expired_token(client_factory):
    """Cannot get current user with expired token."""
    bad_token = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOjEsImV4cCI6MH0.invalid"
    async with client_factory.create(cookies={COOKIE_NAME: bad_token}) as authed:
        response = await authed.get("/api/auth/me")
    assert response.status_code == 401


# Cookie validation tests
@pytest.mark.asyncio
async def test_cookie_from_register_works_for_me(client_factory):
    """Auth cookie from registration works for subsequent requests."""
    email = unique_email("tokentest")
    
    async with client_factory.get_db_session() as db:
        invite_code = await create_invite_for_registration(db, unique_email("gf"))
    
    reg_response = await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "password123",
            "invite_identifier": invite_code,
        },
    )
    cookies = dict(reg_response.cookies)
    
    async with client_factory.create(cookies=cookies) as authed:
        me_response = await authed.get("/api/auth/me")
    
    assert me_response.status_code == 200
    assert me_response.json()["email"] == email


@pytest.mark.asyncio
async def test_cookie_from_login_works_for_me(client_factory):
    """Auth cookie from login works for subsequent requests."""
    email = unique_email("logintoken")
    
    async with client_factory.get_db_session() as db:
        invite_code = await create_invite_for_registration(db, unique_email("gf"))
    
    await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "password123",
            "invite_identifier": invite_code,
        },
    )
    login_response = await client_factory.post(
        "/api/auth/login",
        json={"email": email, "password": "password123"},
    )
    cookies = dict(login_response.cookies)
    
    async with client_factory.create(cookies=cookies) as authed:
        me_response = await authed.get("/api/auth/me")
    
    assert me_response.status_code == 200
    assert me_response.json()["email"] == email


# Multiple users tests
@pytest.mark.asyncio
async def test_multiple_users_isolated(client_factory):
    """Multiple users have isolated sessions."""
    email1 = unique_email("user1")
    email2 = unique_email("user2")
    
    async with client_factory.get_db_session() as db:
        invite1 = await create_invite_for_registration(db, unique_email("gf1"))
        invite2 = await create_invite_for_registration(db, unique_email("gf2"))
    
    resp1 = await client_factory.post(
        "/api/auth/register",
        json={
            "email": email1,
            "password": "password1",
            "invite_identifier": invite1,
        },
    )
    resp2 = await client_factory.post(
        "/api/auth/register",
        json={
            "email": email2,
            "password": "password2",
            "invite_identifier": invite2,
        },
    )
    
    cookies1 = dict(resp1.cookies)
    cookies2 = dict(resp2.cookies)
    
    async with client_factory.create(cookies=cookies1) as user1:
        me1 = await user1.get("/api/auth/me")
    
    async with client_factory.create(cookies=cookies2) as user2:
        me2 = await user2.get("/api/auth/me")
    
    assert me1.json()["email"] == email1
    assert me2.json()["email"] == email2
    assert me1.json()["id"] != me2.json()["id"]


# Password tests
@pytest.mark.asyncio
async def test_password_is_hashed(client_factory):
    """Passwords are properly hashed (can login with correct password)."""
    email = unique_email("hashtest")
    
    async with client_factory.get_db_session() as db:
        invite_code = await create_invite_for_registration(db, unique_email("gf"))
    
    await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "mySecurePassword123",
            "invite_identifier": invite_code,
        },
    )
    response = await client_factory.post(
        "/api/auth/login",
        json={"email": email, "password": "mySecurePassword123"},
    )
    assert response.status_code == 200


@pytest.mark.asyncio
async def test_case_sensitive_password(client_factory):
    """Passwords are case-sensitive."""
    email = unique_email("casetest")
    
    async with client_factory.get_db_session() as db:
        invite_code = await create_invite_for_registration(db, unique_email("gf"))
    
    await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "Password123",
            "invite_identifier": invite_code,
        },
    )
    response = await client_factory.post(
        "/api/auth/login",
        json={"email": email, "password": "password123"},
    )
    assert response.status_code == 401


# Logout tests
@pytest.mark.asyncio
async def test_logout_success(client_factory):
    """Can logout successfully."""
    email = unique_email("logout")
    
    async with client_factory.get_db_session() as db:
        invite_code = await create_invite_for_registration(db, unique_email("gf"))
    
    reg_response = await client_factory.post(
        "/api/auth/register",
        json={
            "email": email,
            "password": "password123",
            "invite_identifier": invite_code,
        },
    )
    cookies = dict(reg_response.cookies)
    
    async with client_factory.create(cookies=cookies) as authed:
        logout_response = await authed.post("/api/auth/logout")
    
    assert logout_response.status_code == 200
    assert logout_response.json() == {"ok": True}