"""
购物车预售商品抓取服务
通过 Playwright 打开购物车页面，从 DOM 的 item_warp 提取商品信息
"""
import asyncio
from playwright.async_api import async_playwright
from utils.stealth import stealth_async
from server.services.auth_service import get_browser_context, has_auth

CART_URL = "https://weidian.com/new-cart/index.php"

# 提取购物车商品的 JS，与 test_cart.py 保持一致
EXTRACT_JS = """() => {
    const R = [];
    const sws = document.querySelectorAll(
        'div.shop_info.cart_content div.shop_warp'
    );
    for (const sw of sws) {
        const sn = (sw.querySelector('.shop_name') || {}).textContent || '';
        const iws = sw.querySelectorAll('.item_warp');
        for (const iw of iws) {
            const o = {
                shop_name: sn.trim(),
                cart_item_id: iw.id,
                title: '', sku_name: '', price: '',
                is_presale: false, countdown_text: '',
                sale_time: '', presale_type: ''
            };
            const te = iw.querySelector('.item_title');
            if (te) o.title = te.textContent.trim();
            const sk = iw.querySelector('.item_sku');
            if (sk) o.sku_name = sk.textContent.trim();
            const pr = iw.querySelector('.item_prices');
            if (pr) o.price = pr.textContent.replace(/[^\\d.]/g, '');
            const de = iw.querySelector('.item_desc');
            if (de) {
                const dt = de.querySelector('.title');
                const dd = de.querySelector('.desc');
                const wm = de.querySelector('.warn_msg');
                if (dt && /\\u5b9a\\u65f6\\s*\\u5f00\\u552e/.test(dt.textContent)) {
                    o.is_presale = true;
                    const d = dd ? dd.textContent.trim() : '';
                    const w = wm ? wm.textContent.trim() : '';
                    if (d.includes('\\u8ddd\\u79bb\\u5f00\\u552e\\u8fd8\\u5269')) {
                        o.presale_type = 'countdown';
                        o.countdown_text = w;
                    } else if (d.includes('\\u5f00\\u552e\\u65f6\\u95f4')) {
                        o.presale_type = 'scheduled';
                        o.sale_time = w;
                    } else {
                        o.presale_type = 'unknown';
                        o.countdown_text = w;
                    }
                }
            }
            R.push(o);
        }
    }
    return R;
}"""


async def fetch_cart_presale_items(account_id):
    """
    获取指定账号购物车中的预售商品列表
    返回: (success, items_or_msg)
    """
    if not has_auth(account_id):
        return False, "账号未登录"

    async with async_playwright() as p:
        browser, context = await get_browser_context(
            p, account_id, headless=True
        )
        page = await context.new_page()
        await stealth_async(page)

        try:
            await page.goto(
                CART_URL, wait_until="networkidle", timeout=20000
            )
            await asyncio.sleep(3)

            if "login" in page.url.lower():
                await browser.close()
                return False, "登录态已过期，请重新登录"

            if "error" in page.url.lower():
                await browser.close()
                return False, "购物车页面加载失败"

        except Exception as e:
            await browser.close()
            return False, f"打开购物车失败: {e}"

        raw_items = await page.evaluate(EXTRACT_JS)
        await browser.close()

    # 只返回预售商品
    presale = [it for it in raw_items if it.get("is_presale")]
    return True, presale