# 命令行吃接口 3 信封：合单后的客商、货品、金额都来自报文。

from __future__ import annotations

import json
from pathlib import Path

import pytest

from contract_create_node import ContractCreateError, build_spec_from_data, load_input_data
from contract_draft import contract_draft_from_dict

_OMS_EXAMPLE = (
    Path(__file__).resolve().parent.parent / "examples" / "oms_purchase_contract.json"
)
_PAGE_DRAFT = (
    Path(__file__).resolve().parent.parent
    / "examples"
    / "contract_create_input_dry_run.json"
)


def test_build_spec_from_oms_envelope_uses_json_fields(monkeypatch):
    monkeypatch.setenv("CONTRACT_USERNAME", "u")
    monkeypatch.setenv("CONTRACT_PASSWORD", "p")
    data = json.loads(_OMS_EXAMPLE.read_text(encoding="utf-8"))
    spec = build_spec_from_data(data)
    ctx = spec.flow_context
    assert ctx is not None
    assert spec.job_id == "OMS-DW0100046361-2026-10-25"
    assert spec.supplier_name == "重庆亿昊药业有限公司"
    assert spec.order_date == "2026-10-25"
    assert spec.submit_mode == "submit"
    assert ctx.customer_code == "DW0100046361"
    assert ctx.customer_name == "重庆亿昊药业有限公司"
    assert ctx.amount == "300.0000"
    assert ctx.contract_sign_date == "2026-10-25"
    assert ctx.contract_start_date == "2026-10-25"
    assert ctx.contract_end_date == "2027-10-24"
    assert ctx.payment_days == "30"
    assert ctx.contract_category == ""
    assert ctx.settlement_type == ""
    assert ctx.payment_method == ""
    assert ctx.is_prepayment == ""
    assert [line.mdm_code for line in ctx.goods_lines] == [
        "FQX0100020661",
        "FQX0100031787",
        "FQX0100044037",
    ]
    assert [line.unit_price for line in ctx.goods_lines] == [
        "10.0000",
        "10.0000",
        "10.0000",
    ]


def test_page_draft_json_still_builds(monkeypatch):
    monkeypatch.setenv("CONTRACT_USERNAME", "u")
    monkeypatch.setenv("CONTRACT_PASSWORD", "p")
    data = json.loads(_PAGE_DRAFT.read_text(encoding="utf-8"))
    spec = build_spec_from_data(data)
    assert spec.submit_mode == "dry_run"
    assert spec.flow_context is not None
    assert spec.flow_context.customer_code == "DW0100046361"
    assert spec.flow_context.goods_lines[0].goods_code == "FQX0100118047"


# JSON 没写的页面字段保持空，不回填账期/采购协议等默认值。
def test_draft_json_omitted_page_fields_stay_empty():
    draft = contract_draft_from_dict(
        {
            "supplierName": "示例供应商",
            "orderDate": "2026-10-01",
            "sourceType": "YYC",
        }
    )
    assert draft.contract_category == ""
    assert draft.settlement_type == ""
    assert draft.contract_nature == ""
    assert draft.amount_type == ""
    assert draft.is_prepayment == ""
    assert draft.payment_method == ""
    assert draft.payment_days == ""
    assert draft.contract_status == ""


# 空入参直接失败，不回退 examples 里的测试客商。
def test_load_input_data_rejects_empty():
    with pytest.raises(ContractCreateError, match="缺少入参 JSON"):
        load_input_data("")