"""全库导出为 xlsx（每个表一个 sheet）"""
import sqlite3
import pandas as pd
from pathlib import Path
from datetime import datetime

DB   = r'C:\Users\lookt\a_stock_timeline\data\a_stock.db'
OUT  = r'C:\Users\lookt\a_stock_timeline\data\a_stock_all.xlsx'

TABLES = [
    'trade_calendar',
    'stock_daily',
    'lhb_daily',
    'news_flash',
    'macro_event',
    'news_cn',
    'money_flow',
    'global_index',
]

conn = sqlite3.connect(DB)

with pd.ExcelWriter(OUT, engine='openpyxl', datetime_format='YYYY-MM-DD') as writer:
    for tbl in TABLES:
        df = pd.read_sql(f'SELECT * FROM {tbl}', conn)
        print(f'{tbl}: {len(df)} 行 -> sheet')
        df.to_excel(writer, sheet_name=tbl, index=False)

conn.close()
print(f'\n[OK] 导出完成: {OUT}')