"""接口 2 / 4：读 push_status=0。不更新推送状态。"""
from __future__ import annotations

import os
from collections.abc import Callable

from ..inbound.oracle_repo import _ensure_client
from ..inbound.repo import RepoUnavailable

_LIST_UNPUSHED_SQL = """
SELECT
    fid, operate_type, oms_id, platform_type, supplier_name, bar_code,
    purchase_price, purchase_qty, purchase_total, status, fail_reason,
    pay_order_no, pay_order_dtl_id, org_code, push_status
FROM rpa_cart_settlement_goods_data
WHERE push_status = 0
ORDER BY oms_id, fid
"""


class OracleCartSettlementRepo:
    def __init__(self, connect: Callable):
        self._connect = connect

    @classmethod
    def from_env(cls) -> "OracleCartSettlementRepo":
        user = os.getenv("RPA_ORACLE_USER", "")
        password = os.getenv("RPA_ORACLE_PASSWORD", "")
        host = os.getenv("RPA_ORACLE_HOST", "")
        if not user or not password or not host:
            raise RepoUnavailable("未配置 RPA_ORACLE_HOST / RPA_ORACLE_USER / RPA_ORACLE_PASSWORD")
        port = os.getenv("RPA_ORACLE_PORT", "1521")
        service = os.getenv("RPA_ORACLE_SERVICE", "rpa")
        dsn = f"{host}:{port}/{service}"

        def connect():
            _ensure_client()
            import oracledb

            return oracledb.connect(user=user, password=password, dsn=dsn)

        return cls(connect=connect)

    def list_unpushed(self) -> list[dict]:
        conn = self._connect()
        try:
            with conn.cursor() as cur:
                cur.execute(_LIST_UNPUSHED_SQL)
                cols = [item[0].lower() for item in cur.description]
                return [dict(zip(cols, row)) for row in cur.fetchall()]
        except Exception as exc:
            raise RepoUnavailable(str(exc)) from exc
        finally:
            conn.close()


_LIST_AGREEMENT_SQL = """
SELECT
    fid, oms_id, action_code, contract_status, contract_fail_reason,
    contract_no, agreement_status, agreement_fail_reason,
    agreement_id, agreement_dtl_id, org_code, push_status
FROM rpa_contract_agreement_result
WHERE push_status = 0
ORDER BY fid
"""


class OracleContractAgreementRepo:
    def __init__(self, connect: Callable):
        self._connect = connect

    @classmethod
    def from_env(cls) -> "OracleContractAgreementRepo":
        user = os.getenv("RPA_ORACLE_USER", "")
        password = os.getenv("RPA_ORACLE_PASSWORD", "")
        host = os.getenv("RPA_ORACLE_HOST", "")
        if not user or not password or not host:
            raise RepoUnavailable("未配置 RPA_ORACLE_HOST / RPA_ORACLE_USER / RPA_ORACLE_PASSWORD")
        port = os.getenv("RPA_ORACLE_PORT", "1521")
        service = os.getenv("RPA_ORACLE_SERVICE", "rpa")
        dsn = f"{host}:{port}/{service}"

        def connect():
            _ensure_client()
            import oracledb

            return oracledb.connect(user=user, password=password, dsn=dsn)

        return cls(connect=connect)

    def list_unpushed(self) -> list[dict]:
        conn = self._connect()
        try:
            with conn.cursor() as cur:
                cur.execute(_LIST_AGREEMENT_SQL)
                cols = [item[0].lower() for item in cur.description]
                return [dict(zip(cols, row)) for row in cur.fetchall()]
        except Exception as exc:
            raise RepoUnavailable(str(exc)) from exc
        finally:
            conn.close()