"""Shared fixtures for svrnty-vision test suite."""

from __future__ import annotations

import base64
import io

import pytest
from fastapi.testclient import TestClient
from PIL import Image

from svrnty_vision.server import app


@pytest.fixture(scope="session")
def client() -> TestClient:
    return TestClient(app)


@pytest.fixture(scope="session")
def red_png_b64() -> str:
    """100×100 solid-red PNG encoded as base64 — minimal valid image for all endpoints."""
    img = Image.new("RGB", (100, 100), color=(220, 50, 50))
    buf = io.BytesIO()
    img.save(buf, format="PNG")
    return base64.b64encode(buf.getvalue()).decode("ascii")


@pytest.fixture(scope="session")
def gradient_png_b64() -> str:
    """200×200 RGB gradient — more realistic for VLM + palette tests."""
    img = Image.new("RGB", (200, 200))
    for x in range(200):
        for y in range(200):
            img.putpixel((x, y), (x, y, 128))
    buf = io.BytesIO()
    img.save(buf, format="PNG")
    return base64.b64encode(buf.getvalue()).decode("ascii")


def pytest_configure(config: pytest.Config) -> None:
    config.addinivalue_line(
        "markers",
        "integration: live service tests — require Tailscale + running Spark hosts. "
        "Run with: pytest -m integration",
    )