#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import json
import requests
import datetime
import pathlib
import re
from openpyxl import Workbook

# ──────────────── ПУТИ ────────────────
BASE_DIR = pathlib.Path(__file__).resolve().parent
CAT_FILE = BASE_DIR / "leaf_categories.txt"     # список категорий IKEA
OUT_DIR  = BASE_DIR / "json_raw"
OUT_DIR.mkdir(exist_ok=True)

LOG_FILE = BASE_DIR / "fetch_log.txt"

OUT_JSON  = OUT_DIR / "flattened_products.json"
OUT_XLSX  = OUT_DIR / "flattened_products.xlsx"

# ──────────────── API ────────────────
SEARCH_URL = "https://sik.search.blue.cdtapps.com/pl/pl/search?c=listaf&v=20250507"
HEADERS = {
    "User-Agent": "Mozilla/5.0",
    "Content-Type": "application/json",
}

# ──────────────── ВСПОМОГАТЕЛЬНОЕ ────────────────
def log(msg: str):
    ts = datetime.datetime.now().strftime("[%Y-%m-%d %H:%M:%S] ")
    print(ts + msg)
    with LOG_FILE.open("a", encoding="utf-8") as f:
        f.write(ts + msg + "\n")

def fetch_category_json(category_id: str) -> dict:
    """Делает POST к IKEA API и возвращает чистый JSON"""
    payload = {
        "searchParameters": {"input": category_id, "type": "CATEGORY"},
        "zip": "05-090",
        "store": "188",
        "isUserLoggedIn": False,
        "optimizely": {
            "listing_3547_filter_hnf_sticky": None,
            "listing_3332_collapsed_filter_bar": None,
            "discount_percentage": None,
            "listing_3790_simplify_rating_stars": None
        },
        "optimizelyAttributes": {
            "market": "pl",
            "device": "desktop",
            "deviceVendor": "Apple",
            "deviceType": "desktop",
            "isLoggedIn": False,
            "environment": "prod",
            "browser": "Chrome",
            "os": "Mac OS",
            "language": "pl",
            "feedMarket": "pl-PL",
            "locale": "pl-PL",
            "customerType": "guest",
            "isEntranceVisit": False,
            "pip_to_pip_src": ""
        },
        "components": [{
            "component": "PRIMARY_AREA",
            "columns": 4,
            "types": {
                "main": "PRODUCT",
                "breakouts": ["PLANNER", "LOGIN_REMINDER", "MATTRESS_WARRANTY"]
            },
            "filterConfig": {"max-num-filters": 6},
            "window": {"size": 1000, "offset": 0},
            "forceFilterCalculation": True
        }]
    }

    log(f"POST {SEARCH_URL}  category_id={category_id}")
    r = requests.post(SEARCH_URL, headers=HEADERS, json=payload, timeout=30)
    log(f"→ Status: {r.status_code}")
    r.raise_for_status()
    return r.json()

def extract_products(data: dict) -> list[dict]:
    """Извлекает товары и варианты из ответа IKEA"""
    products = []

    for result in data.get("results", []):
        for item in result.get("items", []):
            product = item.get("product")
            if not product:
                continue

            # Собираем категорию
            category_path = " / ".join(c.get("name", "") for c in product.get("categoryPath", []))

            def extract_one(prod):
                av = prod.get("availability", [])
                av0_status = av[0].get("status") if len(av) > 0 else ""
                av1_status = av[1].get("status") if len(av) > 1 else ""
                av1_store  = av[1].get("store") if len(av) > 1 else ""

                price = (
                    prod.get("salesPrice", {})
                        .get("current", {})
                        .get("wholeNumber", "")
                )

                return {
                    "id": prod.get("id") or prod.get("itemNoGlobal"),
                    "pipUrl": prod.get("pipUrl", ""),
                    "availability_0_status": av0_status,
                    "availability_1_status": av1_status,
                    "availability_1_store": av1_store,
                    "price": price,
                    "category_path": category_path,
                }

            # Основной продукт
            products.append(extract_one(product))

            # Варианты
            variants = (
                product.get("gprDescription", {}).get("variants", [])
            )
            for v in variants:
                products.append(extract_one(v))

    return products

# ──────────────── MAIN ────────────────
def main():
    if not CAT_FILE.exists():
        print("✖ Файл leaf_categories.txt не найден.")
        return

    categories = [
        line.strip() for line in CAT_FILE.read_text(encoding="utf-8").splitlines() if line.strip()
    ]
    if not categories:
        print("✖ Нет категорий для обработки.")
        return

    all_products = []

    for idx, url in enumerate(categories, 1):
        log(f"[{idx}/{len(categories)}] {url}")
        m = re.search(r"-([0-9]+)/?$", url.rstrip("/"))
        if not m:
            log("⚠️  Не найден ID категории в URL")
            continue

        cat_id = m.group(1)
        try:
            data = fetch_category_json(cat_id)
            items = extract_products(data)
            all_products.extend(items)
            log(f"✅ {len(items)} товаров добавлено из категории {cat_id}")
        except Exception as e:
            log(f"❌ Ошибка при категории {cat_id}: {e}")

    if not all_products:
        log("⚠️ Нет товаров для сохранения.")
        return

    # Сохраняем JSON
    with OUT_JSON.open("w", encoding="utf-8") as f:
        json.dump(all_products, f, ensure_ascii=False, indent=2)
    log(f"💾 JSON сохранён → {OUT_JSON.name} ({len(all_products)} записей)")

    # Сохраняем Excel
    wb = Workbook()
    ws = wb.active
    ws.title = "IKEA_flat"
    headers = list(all_products[0].keys())
    ws.append(headers)
    for row in all_products:
        ws.append([row.get(h, "") for h in headers])
    wb.save(OUT_XLSX)
    log(f"📊 Excel сохранён → {OUT_XLSX.name}")

    log("🎯 Готово.")

if __name__ == "__main__":
    main()