import json
import os
from pathlib import Path

CONFIG_DIR = Path.home() / ".config" / "spotify-cli"
CONFIG_FILE = CONFIG_DIR / "config.json"
TOKEN_FILE = CONFIG_DIR / "token.json"

DEFAULT_CONFIG = {
    "client_id": "",
    "default_device": None,
    "volume_step": 5,
}

def ensure_config_dir():
    CONFIG_DIR.mkdir(parents=True, exist_ok=True)

def load_config():
    ensure_config_dir()
    if CONFIG_FILE.exists():
        with open(CONFIG_FILE) as f:
            user_cfg = json.load(f)
            cfg = {**DEFAULT_CONFIG, **user_cfg}
            return cfg
    return DEFAULT_CONFIG.copy()

def save_config(cfg: dict):
    ensure_config_dir()
    with open(CONFIG_FILE, "w") as f:
        json.dump(cfg, f, indent=2)

def load_token():
    ensure_config_dir()
    if TOKEN_FILE.exists():
        with open(TOKEN_FILE) as f:
            return json.load(f)
    return None

def save_token(token: dict):
    ensure_config_dir()
    with open(TOKEN_FILE, "w") as f:
        json.dump(token, f, indent=2)

def clear_token():
    if TOKEN_FILE.exists():
        TOKEN_FILE.unlink()