# 接口 4：从表 4 取未推行，组装文档报文。
#
# 同一非空 contractNo 必须在同一批 data 里。空 contractNo（失败行）按行独立。
# 一批上限默认 500，可用 OMS_OUTBOUND_BATCH_LIMIT 覆盖。不改 push_status，不发 HTTP。

from __future__ import annotations

from collections import OrderedDict

from ..parse import as_int, as_str
from .limits import MAX_BATCH, batch_limit

__all__ = [
    "MAX_BATCH",
    "batch_limit",
    "build_contract_agreement_envelope",
    "load_contract_agreement_envelope",
]


# 从仓库取未推行并组装信封。未传 limit 时读环境变量。
def load_contract_agreement_envelope(repo, limit: int | None = None) -> dict:
    cap = batch_limit() if limit is None else limit
    return build_contract_agreement_envelope(repo.list_unpushed(limit=cap), limit=cap)


# 把已取出的行按合同号整组截到 limit，再转文档字段。
def build_contract_agreement_envelope(rows: list[dict], limit: int = MAX_BATCH) -> dict:
    chosen = _take_complete_groups(rows, limit)
    return {"data": [_to_item(row) for row in chosen]}


# 非空合同号成一组；空合同号用 fid 自成一组。
def _group_key(row: dict):
    number = row.get("contract_no")
    if number is None or str(number).strip() == "":
        return ("fid", row["fid"])
    return ("no", str(number).strip())


# 按合同号保序成组；装不下的整组留下。空批时超限组仍进入。
def _take_complete_groups(rows: list[dict], limit: int) -> list[dict]:
    groups: OrderedDict = OrderedDict()
    for row in rows:
        groups.setdefault(_group_key(row), []).append(row)
    batch: list[dict] = []
    for group in groups.values():
        if len(batch) + len(group) > limit and batch:
            break
        batch.extend(group)
    return batch


# 把表 4 行转成接口 4 文档字段。
def _to_item(row: dict) -> dict:
    return {
        "fid": as_int(row["fid"]),
        "omsId": as_int(row["oms_id"]),
        "actionCode": as_int(row["action_code"]),
        "contractStatus": as_int(row.get("contract_status")),
        "contractFailReason": as_str(row.get("contract_fail_reason")),
        "contractNo": as_str(row.get("contract_no")),
        "agreementStatus": as_int(row.get("agreement_status")),
        "agreementFailReason": as_str(row.get("agreement_fail_reason")),
        "agreementId": as_str(row.get("agreement_id")),
        "agreementDtlId": as_str(row.get("agreement_dtl_id")),
        "orgCode": as_str(row.get("org_code")),
    }