"""项目命令解析辅助函数。"""

from __future__ import annotations

import re

from ..utils.title import compact_title


def normalize_project_title_candidate(candidate: str) -> str:
    cleaned = re.sub(r"\s+", " ", str(candidate or "")).strip(" []【】()（）:：\"'“”")
    if not cleaned:
        return ""
    cleaned = re.sub(
        r"^(?:名称|名字|项目名|需求名)(?:叫|是|为|名为|名称为|名字为|名称是|名字是|名称叫|名字叫)\s*",
        "",
        cleaned,
        flags=re.IGNORECASE,
    ).strip(" []【】()（）:：\"'“”")
    if not cleaned:
        return ""
    cleaned = re.sub(
        r"^(?:(?:项目|需求)(?:名字|名称|名)?(?:叫|是|为|名为|名称为|名字为|名称叫|名字叫)?|(?:项目|需求)?(?:名为|名称为|名字为|名称是|名字是|名称叫|名字叫|叫|为))\s*",
        "",
        cleaned,
        flags=re.IGNORECASE,
    ).strip(" []【】()（）:：\"'“”")
    if not cleaned:
        return ""
    normalized = re.sub(r"\s+", "", cleaned).lower()
    generic_tokens = {
        "项目",
        "一个项目",
        "新项目",
        "项目列表",
        "项目列表里面",
        "项目库",
        "项目台账",
        "项目主数据",
        "pmflow",
        "pmflow项目列表",
    }
    if normalized in generic_tokens:
        return ""
    if normalized.startswith(("在项目列表", "到项目列表", "进项目列表", "在pmflow", "到pmflow", "进pmflow")):
        return ""
    return compact_title(cleaned, max_len=24)


def extract_project_create_title(text: str) -> str:
    cleaned = re.sub(r"\s+", " ", str(text or "")).strip()
    if not cleaned:
        return ""
    quoted_match = re.search(r"(?:项目|新项目)[^\"“”']{0,10}[\"“”']([^\"“”']{2,40})[\"“”']", cleaned)
    if quoted_match:
        return normalize_project_title_candidate(quoted_match.group(1))
    for pattern in (
        r"(?:项目|需求)(?:名字|名称|名)?(?:叫|名为|名称是|名称为|是|为)[：:，,\s]*(.+)",
        r"(?:帮我|请|麻烦|给我)?(?:新增|增加|添加|创建|新建|建立|开个|开一个|建个|建一个|做个|做一个|加个|加一个)(?:一个|个)?项目(?:叫|名为|名称是|名称为|是|为)?[：:，,\s]*(.+)",
        r"(?:新增|增加|添加|创建|新建|建立)项目[：:，,\s]*(.+)",
    ):
        match = re.search(pattern, cleaned, re.IGNORECASE)
        if not match:
            continue
        candidate = re.sub(r"[，。,.;；!?？].*$", "", match.group(1)).strip(" []【】()（）:：\"'“”")
        candidate = re.sub(r"^(?:一个|个|新项目|项目|需求)\s*", "", candidate, flags=re.IGNORECASE)
        candidate = re.sub(
            r"^(?:(?:项目|需求)(?:名字|名称|名)?(?:叫|是|为|名为|名称为|名字为|名称叫|名字叫)?|(?:项目|需求)?(?:名为|名称为|名字为|名称是|名字是|名称叫|名字叫|叫|为))\s*",
            "",
            candidate,
            flags=re.IGNORECASE,
        )
        if candidate:
            return normalize_project_title_candidate(candidate)
    return ""


def extract_project_create_description(*, instruction: str, title: str) -> str:
    cleaned = re.sub(r"\s+", " ", str(instruction or "")).strip()
    if not cleaned:
        return ""
    if title:
        cleaned = cleaned.replace(title, "", 1).strip(" ，,:：")
    cleaned = re.sub(
        r"^(?:帮我|请|麻烦|给我)?(?:新增|增加|添加|创建|新建|建立|开个|开一个|建个|建一个|做个|做一个|加个|加一个)(?:一个|个)?项目(?:叫|名为|名称是|名称为|是|为)?",
        "",
        cleaned,
        flags=re.IGNORECASE,
    ).strip(" ，,:：")
    if not cleaned:
        return ""
    return cleaned[:4000]