"""Live-API smoke test.

Runs only when ANTHROPIC_API_KEY is set in the env (or .env). Sends one
real turn, verifies we get back a non-empty assistant text and usage
counts. Marked ``real_api`` so it is excluded from the default suite —
opt in with ``pytest -m real_api``.
"""

from __future__ import annotations

import os

import pytest
from dotenv import dotenv_values

from relay.anthropic_client import AnthropicClient
from relay.config import REPO_ROOT


def _api_key_available() -> str | None:
    env_values = dotenv_values(REPO_ROOT / ".env")
    return (
        env_values.get("ANTHROPIC_API_KEY") or os.environ.get("ANTHROPIC_API_KEY") or ""
    ).strip() or None


@pytest.mark.real_api
@pytest.mark.skipif(_api_key_available() is None, reason="ANTHROPIC_API_KEY not configured")
def test_real_round_trip_against_haiku() -> None:
    """One round-trip against the Haiku model — cheapest available, ~$0.0001 per call.

    Skips (rather than fails) on credit-balance errors so the test is
    honest about why it didn't run. Real authentication errors (401)
    still fail loudly.
    """
    import anthropic

    api_key = _api_key_available()
    assert api_key is not None
    client = AnthropicClient(
        api_key=api_key, model="claude-haiku-4-5-20251001", max_output_tokens=64
    )
    try:
        result = client.send(
            system_prompt="You are a terse echo. Reply with exactly 'pong' and nothing else.",
            messages=[{"role": "user", "content": "ping"}],
        )
    except anthropic.BadRequestError as exc:
        msg = str(exc).lower()
        if "credit balance" in msg or "billing" in msg:
            pytest.skip(f"Anthropic API key has no credit balance: {exc}")
        raise

    assert result.text.strip().lower() == "pong"
    assert result.input_tokens > 0
    assert result.output_tokens > 0
    assert result.estimated_cost_usd > 0