import json

import pytest

from ai_typewriter.config import load_config


def test_load_default_config(tmp_path):
    path = tmp_path / "config.json"
    path.write_text(json.dumps({"provider": "ollama"}), encoding="utf-8")

    cfg = load_config(path)

    assert cfg.provider == "ollama"
    assert cfg.hotkey == "ctrl+alt+a"
    assert cfg.math_text_format == "plain"
    assert "Réponds directement" in cfg.system_prompt


def test_accept_word_equation_format(tmp_path):
    path = tmp_path / "config.json"
    path.write_text(json.dumps({"provider": "ollama", "math_text_format": "word_equation"}), encoding="utf-8")

    cfg = load_config(path)

    assert cfg.math_text_format == "word_equation"


def test_timeout_zero_disables_timeout(tmp_path):
    path = tmp_path / "config.json"
    path.write_text(json.dumps({"provider": "ollama", "request_timeout_seconds": 0}), encoding="utf-8")

    cfg = load_config(path)

    assert cfg.request_timeout_seconds is None


def test_reject_invalid_math_text_format(tmp_path):
    path = tmp_path / "config.json"
    path.write_text(json.dumps({"provider": "ollama", "math_text_format": "bad"}), encoding="utf-8")

    with pytest.raises(ValueError):
        load_config(path)


def test_reject_invalid_provider(tmp_path):
    path = tmp_path / "config.json"
    path.write_text(json.dumps({"provider": "bad"}), encoding="utf-8")

    with pytest.raises(ValueError):
        load_config(path)