"""给指定用户灌一批 mock 比价记录(开发 / 真机走查用)。

为什么:首页「上次比价」横幅(4 分钟新鲜窗口)、比价记录页、「我的」省钱战绩卡都读
`comparison_record`。dev 库里这个用户没数据时这些 UI 是空的,本脚本灌一批真实感的外卖
比价记录,方便端上走查。

用法(项目根、已 pip install -e . 的环境):
  python scripts/mock_compare_records.py                      # 默认 user 昵称后缀 DlSKoc5S7, 10 条
  python scripts/mock_compare_records.py --user DlSKoc5S7     # 按 昵称后缀/用户名/邀请码/手机号
  python scripts/mock_compare_records.py --user 5             # 直接按 user.id
  python scripts/mock_compare_records.py --user 5 --count 6

要点:
  - 幂等:trace_id 固定为 mock-<标识>-NN,重跑覆盖同号记录(不会越灌越多)。
  - 第 1 条 created_at = 跑脚本当下(4 分钟内),其余铺在近 7 天;重跑会刷新时间戳
    (所以重跑一次即可让「上次比价」横幅重新进入 4 分钟窗口)。
  - best_* / saved / status 由真实的 repositories.comparison.upsert_record 从 comparison_results 派生。
"""
from __future__ import annotations

import argparse
from datetime import datetime, timedelta

from sqlalchemy import or_, select

from app.core.rewards import CN_TZ
from app.db.session import SessionLocal
from app.models.user import User
from app.repositories.comparison import upsert_record
from app.schemas.compare_record import ComparisonRecordIn

# 平台名 → id(展示用;横幅按 platform_name 渲染,id 仅留痕)
_PLATFORM_ID = {"美团": "meituan", "京东": "jd", "淘宝闪购": "taobao", "饿了么": "ele"}

# 10 单真实感外卖订单:source=美团,targets=(平台, 到手价/元, 优惠来源名|None, 红包额/元)。
# failed=True 表示目标平台没采到价(targets 价置 None → 派生 status=failed)。
_CATALOG = [
    dict(store="瑞幸咖啡(国贸店)", items=[("生椰拿铁(大杯)", 2)],
         source=("美团", 39.8),
         targets=[("淘宝闪购", 29.9, "平台红包", 6.0), ("京东", 33.0, None, 0)]),
    dict(store="茶百道(大悦城店)", items=[("杨梅冰萃(大杯)", 1), ("脆波波奶茶", 1)],
         source=("美团", 31.0),
         targets=[("京东", 24.5, "百亿补贴", 4.5), ("饿了么", 27.9, None, 0)]),
    dict(store="麦当劳(西单店)", items=[("板烧鸡腿堡套餐", 1)],
         source=("美团", 32.0),
         targets=[("京东", 25.9, "神券", 3.0), ("淘宝闪购", 28.0, None, 0)]),
    dict(store="肯德基(朝阳大悦城店)", items=[("疯狂星期四全家桶", 1)],
         source=("美团", 89.0),
         targets=[("京东", 79.9, "百亿补贴", 9.0)]),
    dict(store="张亮麻辣烫(双井店)", items=[("自选麻辣烫", 1)],
         source=("美团", 35.0),
         targets=[("京东", None, None, 0), ("淘宝闪购", None, None, 0)],
         failed=True, fail_reason="京东外卖、淘宝闪购均未找到该店"),
    dict(store="必胜客(王府井店)", items=[("超级至尊比萨(9寸)", 1), ("香辣鸡翅", 1)],
         source=("美团", 78.0),
         targets=[("淘宝闪购", 62.0, "跨店满减", 10.0), ("京东", 69.0, None, 0)]),
    dict(store="蜜雪冰城(中关村店)", items=[("多肉葡萄", 2), ("冰鲜柠檬水", 1)],
         source=("美团", 21.0),
         targets=[("京东", 16.5, None, 0)]),
    dict(store="海底捞外送(三里屯店)", items=[("番茄锅底", 1), ("鲜毛肚", 2), ("虾滑", 1)],
         source=("美团", 168.0),
         targets=[("京东", 155.0, "大额神券", 13.0), ("饿了么", 162.0, None, 0)]),
    dict(store="华莱士(回龙观店)", items=[("全鸡汉堡套餐", 1)],
         source=("美团", 26.0),
         targets=[("京东", None, None, 0)],
         failed=True, fail_reason="该商品在京东外卖未上架"),
    dict(store="星巴克(国贸店)", items=[("燕麦拿铁(大杯)", 2)],
         source=("美团", 66.0),
         targets=[("饿了么", 58.0, "会员券", 8.0), ("京东", 61.0, None, 0)]),
]

# 第 2..N 条的 created_at 相对当下的回退量(都 > 4 分钟,确保只有第 1 条落在新鲜窗口)。
_OFFSETS = [
    timedelta(minutes=25), timedelta(hours=2, minutes=10), timedelta(hours=6),
    timedelta(days=1, hours=3), timedelta(days=1, hours=20), timedelta(days=2, hours=9),
    timedelta(days=3, hours=14), timedelta(days=5, hours=7), timedelta(days=7, hours=2),
]


def _resolve_user(db, ident: str) -> User | None:
    """按 id(纯数字)/ 用户名 / 邀请码 / 手机号 / 昵称(或昵称去掉「用户」前缀的后缀)解析用户。"""
    if ident.isdigit():
        u = db.get(User, int(ident))
        if u is not None:
            return u
    return db.execute(
        select(User).where(
            or_(
                User.username == ident,
                User.invite_code == ident,
                User.phone == ident,
                User.nickname == ident,
                User.nickname == f"用户{ident}",
                User.nickname.like(f"%{ident}"),
            )
        )
    ).scalars().first()


def _build_results(order: dict) -> tuple[list[dict], str]:
    """造 comparison_results + information 文案;返回 (results, information)。"""
    src_name, src_price = order["source"]
    failed = order.get("failed", False)
    rows: list[dict] = [dict(
        platform_id=_PLATFORM_ID.get(src_name), platform_name=src_name,
        price=src_price, is_source=True, status="success",
    )]
    for pname, price, cname, csaved in order["targets"]:
        row = dict(
            platform_id=_PLATFORM_ID.get(pname), platform_name=pname,
            price=(None if failed else price), is_source=False,
            status=("store_not_found" if failed else "success"),
        )
        if not failed and csaved:
            row["coupon_saved"] = csaved
            row["coupon_name"] = cname
        rows.append(row)

    # rank:有价的按升序 1..N;无价的不排
    priced = sorted((r for r in rows if r["price"] is not None), key=lambda r: r["price"])
    for i, r in enumerate(priced, start=1):
        r["rank"] = i

    if failed:
        return rows, order.get("fail_reason", "目标平台未找到该商品")
    best = priced[0]
    saved = src_price - best["price"]
    if best["is_source"]:
        info = f"{src_name}已是最低价,本单未比出更低"
    else:
        info = f"已在{best['platform_name']}比出最低价 ¥{best['price']:.2f}(比{src_name}省 ¥{saved:.2f})"
    return rows, info


def main() -> None:
    parser = argparse.ArgumentParser(description="给用户灌一批 mock 比价记录")
    parser.add_argument("--user", default="DlSKoc5S7", help="user.id / 用户名 / 邀请码 / 手机号 / 昵称后缀")
    parser.add_argument("--count", type=int, default=10, help="条数(1..10),默认 10")
    args = parser.parse_args()

    count = max(1, min(args.count, len(_CATALOG)))
    now = datetime.now(CN_TZ).replace(tzinfo=None)

    db = SessionLocal()
    try:
        user = _resolve_user(db, args.user)
        if user is None:
            raise SystemExit(f"❌ 找不到用户:{args.user}(试试 --user <id>)")
        print(f"→ 用户 id={user.id} nickname={user.nickname} phone={user.phone}")

        ok = failed = 0
        for idx in range(count):
            order = _CATALOG[idx]
            src_name, src_price = order["source"]
            results, info = _build_results(order)
            payload = ComparisonRecordIn(
                trace_id=f"mock-{args.user}-{idx:02d}",
                business_type="food",
                device_id="mock-seed",
                store_name=order["store"],
                source_platform_id=_PLATFORM_ID.get(src_name),
                source_platform_name=src_name,
                source_price=src_price,
                items=[{"name": n, "qty": q} for n, q in order["items"]],
                comparison_results=results,
                total_dish_count=sum(q for _, q in order["items"]),
                information=info,
                app_version="mock",
            )
            rec = upsert_record(db, user_id=user.id, payload=payload)
            # created_at:第 1 条 = 当下(4 分钟新鲜窗口);其余铺近 7 天。重跑刷新时间戳。
            rec.created_at = now if idx == 0 else now - _OFFSETS[idx - 1]
            db.commit()
            if rec.status == "success":
                ok += 1
            else:
                failed += 1
            tag = "🆕now" if idx == 0 else f"-{_OFFSETS[idx - 1]}"
            print(f"  [{rec.status:7}] id={rec.id} {order['store']}  best={rec.best_platform_name} "
                  f"¥{(rec.best_price_cents or 0)/100:.2f}  saved=¥{(rec.saved_amount_cents or 0)/100:.2f}  {tag}")

        print(f"✅ 已为 user id={user.id} 写入 {count} 条(success {ok} / failed {failed});"
              f"第 1 条 created_at=当下,4 分钟内进 app 可见「上次比价」横幅。")
    finally:
        db.close()


if __name__ == "__main__":
    main()