import json

from hearo.config import AppConfig
from hearo.models.tiers import DEFAULT_TIER


def test_defaults_are_sane():
    cfg = AppConfig()
    assert cfg.models.tier == DEFAULT_TIER
    assert cfg.models.target_lang == "ko"
    assert cfg.subtitle.font_size > 0
    assert cfg.audio.silence_ms > 0


def test_save_load_roundtrip(tmp_path):
    path = tmp_path / "config.json"
    cfg = AppConfig()
    cfg.subtitle.font_size = 52
    cfg.subtitle.text_color = "#FF00AA"
    cfg.models.tier = "precision"
    cfg.audio.target_pid = 4242
    cfg.save(path)

    loaded = AppConfig.load(path)
    assert loaded.subtitle.font_size == 52
    assert loaded.subtitle.text_color == "#FF00AA"
    assert loaded.models.tier == "precision"
    assert loaded.audio.target_pid == 4242


def test_missing_file_gives_defaults(tmp_path):
    assert AppConfig.load(tmp_path / "nope.json").models.tier == DEFAULT_TIER


def test_corrupt_file_gives_defaults(tmp_path):
    path = tmp_path / "config.json"
    path.write_text("{ this is not json", encoding="utf-8")
    assert AppConfig.load(path).models.tier == DEFAULT_TIER


def test_unknown_keys_are_ignored_and_missing_keys_defaulted(tmp_path):
    """스키마가 바뀌어도 사용자의 기존 설정이 깨지면 안 된다."""
    path = tmp_path / "config.json"
    path.write_text(
        json.dumps(
            {
                "theme": "light",
                "removed_option": True,
                "subtitle": {"font_size": 40, "gone_field": 1},
            }
        ),
        encoding="utf-8",
    )
    cfg = AppConfig.load(path)
    assert cfg.theme == "light"
    assert cfg.subtitle.font_size == 40
    assert cfg.subtitle.bold is True  # 기본값 유지
    assert not hasattr(cfg, "removed_option")