"""Tests for client.config.Config."""

import sys
from pathlib import Path

import pytest

# Ensure project root is on path
project_root = Path(__file__).resolve().parent.parent.parent
sys.path.insert(0, str(project_root))

from client.config import Config


@pytest.fixture
def cfg(tmp_path):
    """A Config backed by a temp file so we never touch the real user config."""
    return Config(config_path=str(tmp_path / "test_config.yaml"))


# ── dot-notation get ────────────────────────────────────────────────


def test_dot_notation_get(cfg):
    """Config.get should traverse nested dicts using dot-separated keys."""
    cfg.config = {"audio": {"sample_rate": 16000}}
    assert cfg.get("audio.sample_rate") == 16000


# ── dot-notation set ────────────────────────────────────────────────


def test_dot_notation_set(cfg):
    """Config.set should create/update nested values via dot-separated keys."""
    cfg.set("audio.sample_rate", 44100)
    assert cfg.config["audio"]["sample_rate"] == 44100

    # Also readable via .get
    assert cfg.get("audio.sample_rate") == 44100


# ── missing key returns default ─────────────────────────────────────


def test_missing_key_returns_default(cfg):
    """Accessing a nonexistent key should return the supplied default."""
    assert cfg.get("nonexistent.path", "fallback") == "fallback"
    assert cfg.get("also.missing") is None  # default default is None


# ── nested set creates intermediate dicts ───────────────────────────


def test_nested_set_creates_path(cfg):
    """Setting a deeply nested key should create all intermediate dicts."""
    cfg.config = {}
    cfg.set("a.b.c.d", 42)

    assert cfg.config["a"]["b"]["c"]["d"] == 42
    assert cfg.get("a.b.c.d") == 42


# ── save and reload round-trip ──────────────────────────────────────


def test_save_and_reload(tmp_path):
    """Values persisted via save() should survive a fresh Config load."""
    config_file = str(tmp_path / "roundtrip.yaml")

    # Create and populate
    cfg1 = Config(config_path=config_file)
    cfg1.set("user.name", "TestUser")
    cfg1.set("transcription.model", "tiny.en")

    # Load a fresh instance from the same file
    cfg2 = Config(config_path=config_file)
    assert cfg2.get("user.name") == "TestUser"
    assert cfg2.get("transcription.model") == "tiny.en"