"""Pytest configuration and fixtures for backend tests."""

import pytest
from app.models.grid import Grid, Segment
from app.models.entities import Store, Destination, Tunnel
from app.models.state import SearchState


@pytest.fixture
def simple_grid():
    """Create a simple 3x3 grid with all segments having traffic level 1."""
    grid = Grid(width=3, height=3)
    # Horizontal segments
    for x in range(2):
        for y in range(3):
            grid.add_segment((x, y), (x + 1, y), 1)
    # Vertical segments
    for x in range(3):
        for y in range(2):
            grid.add_segment((x, y), (x, y + 1), 1)
    return grid


@pytest.fixture
def grid_with_blocked():
    """Create a 3x3 grid with some blocked segments."""
    grid = Grid(width=3, height=3)
    # Add all segments with traffic level 1
    for x in range(2):
        for y in range(3):
            grid.add_segment((x, y), (x + 1, y), 1)
    for x in range(3):
        for y in range(2):
            grid.add_segment((x, y), (x, y + 1), 1)
    # Block segment from (1,1) to (2,1)
    grid.add_segment((1, 1), (2, 1), 0)
    return grid


@pytest.fixture
def grid_with_varied_traffic():
    """Create a 3x3 grid with varied traffic levels."""
    grid = Grid(width=3, height=3)
    # Horizontal segments with different traffic
    grid.add_segment((0, 0), (1, 0), 1)
    grid.add_segment((1, 0), (2, 0), 2)
    grid.add_segment((0, 1), (1, 1), 3)
    grid.add_segment((1, 1), (2, 1), 4)
    grid.add_segment((0, 2), (1, 2), 1)
    grid.add_segment((1, 2), (2, 2), 1)
    # Vertical segments
    grid.add_segment((0, 0), (0, 1), 2)
    grid.add_segment((0, 1), (0, 2), 1)
    grid.add_segment((1, 0), (1, 1), 1)
    grid.add_segment((1, 1), (1, 2), 2)
    grid.add_segment((2, 0), (2, 1), 1)
    grid.add_segment((2, 1), (2, 2), 1)
    return grid


@pytest.fixture
def sample_stores():
    """Create sample stores."""
    return [
        Store(id=1, position=(0, 0)),
        Store(id=2, position=(2, 2)),
    ]


@pytest.fixture
def sample_destinations():
    """Create sample destinations."""
    return [
        Destination(id=1, position=(2, 0)),
        Destination(id=2, position=(0, 2)),
        Destination(id=3, position=(1, 1)),
    ]


@pytest.fixture
def sample_tunnels():
    """Create sample tunnels."""
    return [
        Tunnel(entrance1=(0, 0), entrance2=(2, 2)),
        Tunnel(entrance1=(0, 2), entrance2=(2, 0)),
    ]


@pytest.fixture
def sample_search_state(simple_grid, sample_stores, sample_destinations, sample_tunnels):
    """Create a complete search state."""
    return SearchState(
        grid=simple_grid,
        stores=sample_stores,
        destinations=sample_destinations,
        tunnels=sample_tunnels,
    )


@pytest.fixture
def larger_grid():
    """Create a 5x5 grid for more complex tests."""
    grid = Grid(width=5, height=5)
    # Add all segments with traffic level 1
    for x in range(4):
        for y in range(5):
            grid.add_segment((x, y), (x + 1, y), 1)
    for x in range(5):
        for y in range(4):
            grid.add_segment((x, y), (x, y + 1), 1)
    return grid