import json

import goodreads
from jsonfile import PROJECT_ROOT

SCRAPE_CACHE_DIR = PROJECT_ROOT / "tools" / "content" / ".cache" / "goodreads"


def scrape_cache_path(identifier: str):
    return SCRAPE_CACHE_DIR / f"{identifier}.json"


def cached_scrape(identifier: str) -> dict | None:
    path = scrape_cache_path(identifier)
    if not path.exists():
        return None
    try:
        return json.loads(path.read_text(encoding="utf-8"))
    except ValueError:
        return None


def store_scrape(scraped: dict) -> None:
    SCRAPE_CACHE_DIR.mkdir(parents=True, exist_ok=True)
    scrape_cache_path(scraped["goodreadsId"]).write_text(json.dumps(scraped, ensure_ascii=False, indent=2), encoding="utf-8")


def scrape_book(url: str, fresh: bool = False) -> dict:
    identifier = goodreads.book_id(url)
    cached = None if fresh or not identifier else cached_scrape(identifier)
    if cached:
        return cached
    scraped = goodreads.scrape_book(url)
    if scraped.get("title"):
        store_scrape(scraped)
    return scraped