import json
import os
from urllib.parse import urlparse

CONFIG_PATH = os.path.join(os.path.dirname(__file__), "..", "config.json")

def load_config():
    if not os.path.exists(CONFIG_PATH):
        return {}
    with open(CONFIG_PATH, "r", encoding="utf-8") as f:
        return json.load(f)

def save_config(new_config):
    with open(CONFIG_PATH, "w", encoding="utf-8") as f:
        json.dump(new_config, f, indent=4, ensure_ascii=False)


def get_server_settings(config):
    """Return (scheme, host, port) using defaults when not configured."""
    scheme = "https"
    host = ""
    port = config.get("server_port", "32400") or "32400"

    url = config.get("server_url", "")
    if url:
        parsed = urlparse(url)
        if parsed.scheme:
            scheme = parsed.scheme
            host = parsed.hostname or parsed.netloc
            if parsed.port:
                port = str(parsed.port)
        else:
            host = url

    return scheme, host, port