"""Pytest configuration and fixtures"""
import logging
import time
from io import BytesIO

import pytest
from faker import Faker
from PIL import Image

from app import create_app, db
from app.models import Board, Card, Comment, List, User

log = logging.getLogger(__name__)
fake = Faker()


@pytest.fixture(scope="session")
def app():
    """Create application for testing with PostgreSQL database (session scope)"""
    app = create_app(config_name="test")
    app.config.update(
        {
            "TESTING": True,
            # fmt: off
            "WTF_CSRF_ENABLED": False,
            "JWT_SECRET_KEY":
                "test-secret-keytest-secret-keytest-secret-keytest-secret-key",
            "SERVER_NAME": "localhost.localdomain",
            # fmt: on
        }
    )

    # Create tables once per session
    with app.app_context():
        print("--------db.create_all()------")
        db.create_all()
        yield app
        # Cleanup after all tests
        db.session.remove()
        db.drop_all()
        db.engine.dispose()


@pytest.fixture
def client(app):
    """Test client for making requests"""

    log.debug("Test finished - session dirty: %s", db.session.dirty)
    log.debug("Test finished - session new: %s", db.session.new)
    return app.test_client()


@pytest.fixture(autouse=True)
def _cleanup_db_after_test(app):
    """
    Automatically rollback and remove DB session after EACH test function.

    - Runs after every test function (default scope='function')
    - Depends on 'app' to ensure app context is available
    - Rollback prevents data leakage between tests
    - remove() returns connection to pool (prevents exhaustion)
    """

    yield  # Let the test run
    with app.app_context():
        db.session.rollback()  # Undo all changes from the test
        db.session.remove()  # Return connection to pool


@pytest.fixture
def runner(app):
    """Test CLI runner"""
    return app.test_cli_runner()


@pytest.fixture(autouse=True)
def _rollback_db_session(app):
    """Automatically rollback db.session after each test for isolation.

    This fixture uses the shared Flask-SQLAlchemy session but ensures
    tests don't interfere with each other by rolling back after each test.
    """
    yield
    with app.app_context():
        db.session.rollback()
        db.session.remove()


@pytest.fixture
def db_session(app):
    """Database session for tests (function scope)"""
    """Provide the shared Flask-SQLAlchemy db.session for tests"""
    with app.app_context():
        yield db.session


@pytest.fixture
def admin_user(db_session):
    """Create an admin user for testing"""
    user = User(
        email=fake.email(),
        username=fake.user_name(),
        first_name=fake.first_name(),
        last_name=fake.last_name(),
        is_admin=True,
        is_active=True,
    )
    user.set_password("password123")
    db_session.add(user)
    db_session.commit()
    return user


@pytest.fixture
def regular_user(db_session):
    """Create a regular user for testing"""
    user = User(
        email=fake.email(),
        username=f"{fake.user_name()}_{int(time.time() * 1000)}",
        first_name=fake.first_name(),
        last_name=fake.last_name(),
        is_admin=False,
        is_active=True,
    )
    user.set_password("password123")
    db_session.add(user)
    db_session.commit()
    return user


@pytest.fixture
def inactive_user(db_session):
    """Create an inactive user for testing"""
    user = User(
        email=fake.email(),
        username=fake.user_name(),
        first_name=fake.first_name(),
        last_name=fake.last_name(),
        is_admin=False,
        is_active=False,
    )
    user.set_password("password123")
    db_session.add(user)
    db_session.commit()
    return user


@pytest.fixture
def auth_headers(client, regular_user):
    """Get authentication headers for a regular user"""
    response = client.post(
        "/api/auth/login", json={"email": regular_user.email, "password": "password123"}
    )
    data = response.get_json()
    response.close()
    token = data["access_token"]
    print(f"Auth headers token for user {regular_user.email}: {token[:50]}...")
    return {"Authorization": f"Bearer {token}"}


@pytest.fixture
def admin_headers(client, admin_user):
    """Get authentication headers for an admin user"""
    response = client.post(
        "/api/auth/login", json={"email": admin_user.email, "password": "password123"}
    )
    data = response.get_json()
    token = data["access_token"]
    print(f"Admin headers token for user {admin_user.email}: {token[:50]}...")
    return {"Authorization": f"Bearer {token}"}


# ============ File Upload Fixtures ============


@pytest.fixture
def test_image_file():
    """Create a test image file as BytesIO"""
    # Create a simple red PNG image using PIL
    img = Image.new("RGB", (10, 10), color="red")
    img_io = BytesIO()
    img.save(img_io, format="PNG")
    img_io.seek(0)
    return img_io


@pytest.fixture
def test_large_image_file():
    """Create a larger test image (50KB)"""
    # Create a larger image using PIL
    img = Image.new("RGB", (200, 200), color="blue")
    img_io = BytesIO()
    img.save(img_io, format="PNG")
    img_io.seek(0)
    return img_io


@pytest.fixture
def test_pdf_file():
    """Create a test PDF file as BytesIO"""
    # Minimal valid PDF
    pdf_data = b"%PDF-1.4\n1 0 obj\n<<\n/Type /Catalog\n>>\nendobj\n%%EOF"
    return BytesIO(pdf_data)


@pytest.fixture
def test_board(db_session, regular_user):
    """Create a test board"""
    board = Board(
        user_id=regular_user.id,
        name=fake.sentence(nb_words=4)[:-1],
        description=fake.paragraph(),
    )
    db_session.add(board)
    db_session.commit()
    return board


@pytest.fixture
def test_list(db_session, test_board):
    """Create a test list"""
    lst = List(
        board_id=test_board.id,
        name=fake.sentence(nb_words=3)[:-1],
        pos=0,
    )
    db_session.add(lst)
    db_session.commit()
    return lst


@pytest.fixture
def test_card(db_session, test_list):
    """Create a test card"""
    card = Card(
        list_id=test_list.id,
        name=fake.sentence(nb_words=4)[:-1],
        description=fake.paragraph(),
        pos=0,
        due=None,
        board_id=test_list.board_id,
    )
    db_session.add(card)
    db_session.commit()
    return card


@pytest.fixture
def test_comment(db_session, test_card, regular_user):
    """Create a test comment"""
    comment = Comment(
        card_id=test_card.id,
        user_id=regular_user.id,
        text=fake.paragraph(),
    )
    db_session.add(comment)
    db_session.commit()
    return comment