"""只读统计主从关系、状态和负数行，不输出业务明细。"""

import argparse
import json
import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parents[2] / "backend"))

from sqlalchemy import Engine, create_engine

from app.core.config import Settings, get_settings
from app.core.tplus_db import resolve_tplus_settings

QUERIES = {
    "personnel_dates": "SELECT COUNT_BIG(*) AS total, SUM(CASE WHEN updated IS NULL THEN 1 ELSE 0 END) AS null_updated FROM AA_Person",
    "product_dates": "SELECT COUNT_BIG(*) AS total, SUM(CASE WHEN updated IS NULL THEN 1 ELSE 0 END) AS null_updated FROM AA_Inventory",
    "order_detail_parent": "SELECT COUNT_BIG(*) AS total, SUM(CASE WHEN h.ID IS NULL THEN 1 ELSE 0 END) AS orphan_rows FROM SA_SaleOrder_b b LEFT JOIN SA_SaleOrder h ON h.ID=b.idSaleOrderDTO",
    "delivery_detail_parent": "SELECT COUNT_BIG(*) AS total, SUM(CASE WHEN h.ID IS NULL THEN 1 ELSE 0 END) AS orphan_rows FROM SA_SaleDelivery_b b LEFT JOIN SA_SaleDelivery h ON h.ID=b.idSaleDeliveryDTO",
    "receipt_detail_parent": "SELECT COUNT_BIG(*) AS total, SUM(CASE WHEN h.ID IS NULL THEN 1 ELSE 0 END) AS orphan_rows FROM ARAP_ReceivePayment_b b LEFT JOIN ARAP_ReceivePayment h ON h.ID=b.idArapReceivePaymentDTO",
    "delivery_order_link": "SELECT COUNT_BIG(*) AS total, SUM(CASE WHEN b.saleOrderId IS NULL OR b.saleOrderId=0 THEN 1 ELSE 0 END) AS missing_order_id, SUM(CASE WHEN b.saleOrderId>0 AND h.ID IS NULL THEN 1 ELSE 0 END) AS invalid_order_id FROM SA_SaleDelivery_b b LEFT JOIN SA_SaleOrder h ON h.ID=b.saleOrderId",
    "receipt_order_link": "SELECT COUNT_BIG(*) AS total, SUM(CASE WHEN p.SaleOrderID IS NULL OR p.SaleOrderID=0 THEN 1 ELSE 0 END) AS missing_order_id, SUM(CASE WHEN p.SaleOrderID>0 AND h.ID IS NULL THEN 1 ELSE 0 END) AS invalid_order_id FROM ARAP_ReceivePayment p LEFT JOIN SA_SaleOrder h ON h.ID=p.SaleOrderID",
    "receipt_direction": "SELECT isReceiveFlag, COUNT_BIG(*) AS total FROM ARAP_ReceivePayment GROUP BY isReceiveFlag",
    "receipt_status": "SELECT voucherstate, cancelState, COUNT_BIG(*) AS total FROM ARAP_ReceivePayment GROUP BY voucherstate,cancelState",
    "negative_deliveries": "SELECT SUM(CASE WHEN quantity<0 THEN 1 ELSE 0 END) AS negative_quantity, SUM(CASE WHEN costAmount<0 THEN 1 ELSE 0 END) AS negative_cost FROM SA_SaleDelivery_b",
}


def build_source_engine(resolved: Settings) -> Engine:
    """复用应用的 URL 转义和 TLS 配置自建引擎，不修改全局设置。"""
    return create_engine(
        resolved.t_plus_database_url,
        connect_args={"timeout": resolved.t_plus_connect_timeout},
        hide_parameters=True,
    )


def main() -> int:
    """执行固定白名单统计，并保存无凭据、无明细的 JSON。"""
    parser = argparse.ArgumentParser(description="T+ 只读数据质量统计")
    parser.add_argument("--connection-file", required=True, type=Path)
    parser.add_argument("--report", required=True, type=Path)
    args = parser.parse_args()
    resolved = resolve_tplus_settings(
        get_settings().model_copy(
            update={"t_plus_enabled": True, "t_plus_connection_file": str(args.connection_file)}
        )
    )
    engine = build_source_engine(resolved)
    result = {}
    try:
        connection = engine.raw_connection()
        try:
            connection.driver_connection.timeout = resolved.t_plus_query_timeout
            cursor = connection.cursor()
            for name, sql in QUERIES.items():
                cursor.execute(sql)
                names = [column[0] for column in cursor.description]
                result[name] = [dict(zip(names, row, strict=True)) for row in cursor.fetchall()]
                print(name, json.dumps(result[name]), flush=True)
            cursor.close()
        finally:
            connection.close()
    finally:
        engine.dispose()
    args.report.parent.mkdir(parents=True, exist_ok=True)
    args.report.write_text(json.dumps(result, indent=2), encoding="utf-8")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())