from __future__ import annotations
import os, json, time
from typing import List, Dict, Any
from flask import current_app

FILE_NAME = "orders.json"

def _file_path() -> str:
    return os.path.join(current_app.root_path, "data", FILE_NAME)

def load_orders() -> List[Dict[str, Any]]:
    p = _file_path()
    if not os.path.isfile(p): return []
    try:
        with open(p, "r", encoding="utf-8") as f:
            return json.load(f) or []
    except Exception:
        return []

def _save_orders(orders: List[Dict[str, Any]]) -> None:
    p = _file_path()
    os.makedirs(os.path.dirname(p), exist_ok=True)
    with open(p, "w", encoding="utf-8") as f:
        json.dump(orders, f, ensure_ascii=False, indent=2)

def add_order(order: Dict[str, Any]) -> None:
    orders = load_orders()
    orders.append(order)
    _save_orders(orders)

def mark_done(order_id: str) -> bool:
    orders = load_orders()
    changed = False
    now = time.strftime("%Y-%m-%dT%H:%M:%S%z", time.gmtime())
    for o in orders:
        if o.get("id") == order_id and o.get("status") != "done":
            o["status"] = "done"
            o["done_at"] = now
            changed = True
    if changed: _save_orders(orders)
    return changed

def update_order(order_id: str, patch: Dict[str, Any]) -> bool:
    orders = load_orders()
    ok = False
    for o in orders:
        if o.get("id") == order_id:
            o.update(patch)
            ok = True
            break
    if ok: _save_orders(orders)
    return ok

def cache_costs(order_id: str, costs: Dict[str, Any]) -> bool:
    now = time.strftime("%Y-%m-%dT%H:%M:%S%z", time.gmtime())
    return update_order(order_id, {"cookbook": costs, "last_updated": now})

def cache_materials(order_id: str, mats: Dict[str, Any]) -> bool:
    now = time.strftime("%Y-%m-%dT%H:%M:%S%z", time.gmtime())
    return update_order(order_id, {"materials": mats, "last_updated": now})