#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import pymysql, json, collections
cfg = json.load(open('db_config.json'))
conn = pymysql.connect(host=cfg['host'], port=cfg['port'], user=cfg['user'],
                       password=cfg.get('password'), database=cfg['database'], charset='utf8mb4')
cur = conn.cursor()
cur.execute("""SELECT id, amount, recorded_date, note FROM variable_expenses
               WHERE member_id=3 AND note LIKE '%[微信]%' AND recorded_date BETWEEN '2026-01-01' AND '2026-06-30'""")
rows = cur.fetchall()
old = []   # 历史格式 (前导空格格式 [微信] 类型 |)
new = []   # 本次导入格式 [微信] 支出|
for vid, a, d, n in rows:
    if n.startswith('[微信] 支出'):
        new.append((d.strftime('%Y-%m-%d'), round(float(a), 2), vid, n))
    else:
        old.append((d.strftime('%Y-%m-%d'), round(float(a), 2), vid, n))
print(f"历史微信记录: {len(old)}笔 ¥{sum(x[1] for x in old):.2f}")
print(f"本次导入: {len(new)}笔 ¥{sum(x[1] for x in new):.2f}")

new_set = {(t, a) for t, a, _, _ in new}
old_set = {(t, a) for t, a, _, _ in old}
overlap = new_set & old_set
only_new = new_set - old_set
only_old = old_set - new_set
print(f"\n重叠(同日同金额,新旧都有): {len(overlap)}笔 ¥{sum(x[1] for x in new):.2f}")
print(f"仅本次导入: {len(only_new)}笔")
print(f"仅历史: {len(only_old)}笔")
conn.close()