# -*- coding: utf-8 -*-
"""一次性调研脚本：拉取全部团购详情并写入 ods.group_buy_package_details。

用法（cwd = C:\\NeoZQYY/）：
    python apps/etl/connectors/feiqiu/scripts/research_coupon_details.py

流程：
    1. 从 ods.group_buy_packages 读取所有 coupon_id（id 列）
    2. 串行调用 QueryPackageCouponInfo 详情接口（RateLimiter 5-20s）
    3. 提取结构化字段 + 计算 content_hash + 保留原始 payload
    4. UPSERT 写入 ods.group_buy_package_details

需求覆盖：附录 B 调研 3、4
"""
from __future__ import annotations

import os
import sys
from pathlib import Path

# ── 环境初始化 ──────────────────────────────────────────────────────────
# 加载根 .env（脚本 cwd 为 apps/etl/connectors/feiqiu/）
from dotenv import load_dotenv

_SCRIPT_DIR = Path(__file__).resolve().parent          # scripts/
_FEIQIU_DIR = _SCRIPT_DIR.parent                       # apps/etl/connectors/feiqiu/
_REPO_ROOT = _FEIQIU_DIR.parents[3]                    # → connectors/ → etl/ → apps/ → root

load_dotenv(_REPO_ROOT / ".env")

# 必需环境变量校验
_REQUIRED_ENV = ("FETCH_ROOT", "EXPORT_ROOT", "PG_DSN", "TEST_DB_DSN")
_missing = [k for k in _REQUIRED_ENV if not os.environ.get(k)]
if _missing:
    sys.exit(f"ERROR: 缺少必需环境变量: {', '.join(_missing)}")

TEST_DB_DSN = os.environ["TEST_DB_DSN"]

# 确保 feiqiu 目录在 sys.path 中，以便从仓库根目录运行时也能 import 本地模块
if str(_FEIQIU_DIR) not in sys.path:
    sys.path.insert(0, str(_FEIQIU_DIR))

# ── 依赖导入 ──────────────────────────────────────────────────────────
from psycopg2.extras import Json  # noqa: E402

from config.settings import AppConfig  # noqa: E402
from api.client import APIClient  # noqa: E402
from api.rate_limiter import RateLimiter  # noqa: E402
from database.connection import DatabaseConnection  # noqa: E402

# 复用 ods_tasks.py 中的字段提取逻辑
from tasks.ods.ods_tasks import _group_package_detail_process_fn  # noqa: E402


def main():
    # ── 1. 加载配置 ──────────────────────────────────────────────────
    config = AppConfig.load()
    print(f"✅ 配置加载完成 (store_id={config.get('app.store_id')})")

    # ── 2. 连接测试库 ──────────────────────────────────────────────
    db = DatabaseConnection(
        dsn=TEST_DB_DSN,
        session=config["db"].get("session", {}),
        connect_timeout=config["db"].get("connect_timeout_sec"),
    )
    print(f"✅ 已连接测试库: {TEST_DB_DSN.split('@')[-1]}")

    # ── 3. 查询所有 coupon_id ────────────────────────────────────
    rows = db.query("SELECT DISTINCT id FROM ods.group_buy_packages ORDER BY id")
    coupon_ids = [r["id"] for r in rows]
    print(f"📋 共 {len(coupon_ids)} 个 coupon_id 待拉取")

    if not coupon_ids:
        print("⚠️  没有找到任何 coupon_id，退出")
        db.close()
        return

    # ── 4. 初始化 API 客户端 + 限流器 ────────────────────────────
    api = APIClient(
        base_url=config["api"]["base_url"],
        token=config["api"]["token"],
        timeout=config.get("api.timeout_sec", 20),
    )
    limiter = RateLimiter(min_interval=5.0, max_interval=20.0)

    # ── 5. 串行拉取详情 ──────────────────────────────────────────
    success_count = 0
    fail_count = 0
    skip_count = 0

    for idx, cid in enumerate(coupon_ids, 1):
        print(f"\n[{idx}/{len(coupon_ids)}] coupon_id={cid} ...", end=" ", flush=True)

        try:
            resp = api.get(
                "/PackageCoupon/QueryPackageCouponInfo",
                {"couponId": cid},
            )
        except Exception as e:
            print(f"❌ API 错误: {e}")
            fail_count += 1
            if idx < len(coupon_ids):
                limiter.wait()
            continue

        # 提取字段（复用 _group_package_detail_process_fn）
        records = _group_package_detail_process_fn(resp)
        if not records:
            print("⚠️  响应无有效数据，跳过")
            skip_count += 1
            if idx < len(coupon_ids):
                limiter.wait()
            continue

        record = records[0]

        # ── 6. UPSERT 写入 ──────────────────────────────────────
        try:
            _upsert_detail(db, record)
            db.commit()
            success_count += 1
            print(f"✅ 写入成功 (hash={record['content_hash'][:8]}...)")
        except Exception as e:
            db.rollback()
            print(f"❌ 写入失败: {e}")
            fail_count += 1

        # 限流等待（最后一条不等）
        if idx < len(coupon_ids):
            waited = limiter.wait()
            if not waited:
                print("⚠️  等待被中断")
                break

    # ── 7. 汇总 ──────────────────────────────────────────────────
    print("\n" + "=" * 50)
    print(f"📊 拉取完成: 成功={success_count}, 失败={fail_count}, 跳过={skip_count}, 总计={len(coupon_ids)}")
    print("=" * 50)

    db.close()


def _upsert_detail(db: DatabaseConnection, record: dict) -> None:
    """UPSERT 单条详情记录到 ods.group_buy_package_details。

    ON CONFLICT (coupon_id) 时更新所有字段。
    """
    columns = [
        "coupon_id", "package_name", "duration", "start_time", "end_time",
        "add_start_clock", "add_end_clock", "is_enabled", "is_delete",
        "site_id", "tenant_id", "create_time", "creator_name",
        "table_area_ids", "table_area_names", "assistant_services",
        "groupon_site_infos", "package_services", "coupon_details_list",
        "content_hash", "payload",
    ]

    # JSONB 字段需要用 Json 适配器
    _JSONB_COLS = {
        "table_area_ids", "table_area_names", "assistant_services",
        "groupon_site_infos", "package_services", "coupon_details_list",
        "payload",
    }

    values = []
    for col in columns:
        val = record.get(col)
        if col in _JSONB_COLS and val is not None:
            val = Json(val)
        values.append(val)

    col_list = ", ".join(columns)
    placeholders = ", ".join(["%s"] * len(columns))

    # 除 coupon_id 外的所有列用于 UPDATE
    update_cols = [c for c in columns if c != "coupon_id"]
    update_set = ", ".join(f"{c} = EXCLUDED.{c}" for c in update_cols)

    sql = (
        f"INSERT INTO ods.group_buy_package_details ({col_list}) "
        f"VALUES ({placeholders}) "
        f"ON CONFLICT (coupon_id) DO UPDATE SET {update_set}, "
        f"fetched_at = now()"
    )

    db.execute(sql, values)


if __name__ == "__main__":
    main()