"""限制 T+ 源查询语法；真实 2008 R2 的驱动/引擎实测仍是最终验收条件。"""

import re
from pathlib import Path

import pytest

QUERY_ROOT = Path(__file__).resolve().parents[3] / "db" / "queries" / "tplus"


@pytest.mark.parametrize("path", sorted(QUERY_ROOT.glob("*.sql")), ids=lambda p: p.stem)
def test_源查询只使用旧版本分页并保持只读(path):
    sql = re.sub(r"--[^\n]*", "", path.read_text(encoding="utf-8"))
    assert not re.search(
        r"\b(OFFSET|FETCH|OPENJSON|JSON_VALUE|STRING_AGG|TRY_CONVERT|TRY_CAST|"
        r"INSERT|UPDATE|DELETE|MERGE|CREATE|ALTER|DROP|TRUNCATE)\b",
        sql,
        re.I,
    )
    assert "TOP (:batch_size)" in sql
    assert ":after_id" in sql
    assert not re.search(r"SELECT\s+\*", sql, re.I)


def test_收付款主表没有更新时间时不虚构水位():
    sql = (QUERY_ROOT / "receipts.sql").read_text(encoding="utf-8")
    assert "CAST(NULL AS datetime) AS source_updated_at" in sql
    assert not re.search(r"h\.updated\b", sql, re.I)


def test_关联核验保持只读且不使用新版函数():
    sql = re.sub(r"--[^\n]*", "", (QUERY_ROOT / "audit/queries.sql").read_text(encoding="utf-8"))
    assert not re.search(
        r"\b(OFFSET|FETCH|OPENJSON|JSON_VALUE|STRING_AGG|TRY_CONVERT|TRY_CAST|"
        r"INSERT|UPDATE|DELETE|MERGE|CREATE|ALTER|DROP|TRUNCATE)\b",
        sql,
        re.I,
    )
    assert not re.search(r"SELECT\s+\*", sql, re.I)
    assert ":sale_delivery_type_id" in sql and ":receive_flag" in sql