"""Executable case prompts shared by synthesis, single reruns and batches."""

import re


def case_prompt(case: dict) -> str:
    prefix = f"前置条件：\n{case['preconditions']}\n\n" if case.get("preconditions") else ""
    return prefix + case["goal"]


def require_resolved_case(case: dict) -> str:
    """Drafts may contain parameters, but execution has no template substitution."""
    prompt = case_prompt(case)
    variables = list(dict.fromkeys(re.findall(r"\$\{[^{}\r\n]+\}", prompt)))
    if variables:
        raise ValueError(
            "用例仍有未填写参数："
            + "、".join(variables)
            + "。请在「查看 / 编辑」中填写实际值并保存新版本，或点击「重新提炼」；"
            "复跑和批次不会自动替换参数。未指定报告位置时可使用本次任务 trace。"
        )
    return prompt