# -*- coding: utf-8 -*-
"""Unify version records to V0.1 初版建立 + V0.2 增加版本号 in delivery docx."""
from __future__ import annotations

import re
from pathlib import Path

from docx import Document
from docx.shared import Pt

BASE = Path(
    r"C:\Users\skygu\OneDrive\Projects\AIDOP\项目\项目管理\产互联项目管理\交付文档"
)
V01 = "V0.1"
V02 = "V0.2"
NOTE_V01 = "初版建立"
NOTE_V02 = "增加版本号"


def parse_metadata(doc: Document) -> dict[str, str]:
    meta = {"author": "智造易项目组", "created": "2026-06-10", "updated": "2026-06-10"}
    for p in doc.paragraphs[:25]:
        t = p.text.strip()
        if t.startswith("文档作者："):
            meta["author"] = t.split("：", 1)[1].strip()
        if t.startswith("创建日期："):
            meta["created"] = t.split("：", 1)[1].strip()
            meta["_has_created"] = True
        elif t.startswith("更新日期："):
            meta["updated"] = t.split("：", 1)[1].strip()
        elif t.startswith("版本："):
            m = re.search(r"作者：\s*(.+)$", t)
            if m:
                meta["author"] = m.group(1).strip()
            m = re.search(r"日期：\s*([^作者]+?)(?:\s+作者：|$)", t)
            if m:
                d = normalize_date(m.group(1).strip())
                meta["updated"] = d
                if not meta.get("_has_created"):
                    meta["created"] = d
    if doc.tables:
        for row in doc.tables[0].rows:
            cells = [c.text.strip() for c in row.cells]
            if len(cells) >= 2 and cells[0] == "编制单位" and cells[1]:
                meta["author"] = cells[1]
            if len(cells) >= 2 and cells[0] == "版本" and cells[1].startswith("V"):
                pass
    return meta


def normalize_date(text: str) -> str:
    text = text.strip()
    m = re.match(r"(\d{4})年(\d{1,2})月(\d{1,2})日", text)
    if m:
        y, mo, d = m.groups()
        return f"{y}-{int(mo):02d}-{int(d):02d}"
    m = re.match(r"(\d{4})/(\d{1,2})/(\d{1,2})", text)
    if m:
        y, mo, d = m.groups()
        return f"{y}-{int(mo):02d}-{int(d):02d}"
    return text


def set_cell_text(cell, text: str, *, bold: bool = False) -> None:
    cell.text = ""
    run = cell.paragraphs[0].add_run(text)
    run.font.size = Pt(10.5)
    run.bold = bold


def resize_table_rows(table, data_row_count: int) -> None:
    target = data_row_count + 1
    while len(table.rows) > target:
        table._tbl.remove(table.rows[-1]._tr)
    while len(table.rows) < target:
        table.add_row()


def find_paragraph(doc: Document, text: str) -> int | None:
    for i, p in enumerate(doc.paragraphs):
        if p.text.strip() == text:
            return i
    return None


def find_change_log_table(doc: Document):
    idx = find_paragraph(doc, "更改记录")
    if idx is None:
        return None
    body = list(doc.element.body)
    pos = body.index(doc.paragraphs[idx]._element)
    for el in body[pos + 1 : pos + 10]:
        if not el.tag.endswith("tbl"):
            continue
        for table in doc.tables:
            if table._tbl is not el:
                continue
            header = [c.text.strip() for c in table.rows[0].cells]
            header_text = "".join(header)
            if "变更说明" in header_text and ("版本" in header_text or "日期" in header_text):
                return table
    return None


def table_after_heading(doc: Document, heading: str):
    idx = find_paragraph(doc, heading)
    if idx is None:
        return None
    body = list(doc.element.body)
    pos = body.index(doc.paragraphs[idx]._element)
    for el in body[pos + 1 : pos + 6]:
        if el.tag.endswith("tbl"):
            for table in doc.tables:
                if table._tbl is el:
                    return table
    return None


def standard_version_rows(meta: dict[str, str]) -> list[tuple[str, str, str, str]]:
    return [
        (V01, meta["created"], meta["author"], NOTE_V01),
        (V02, meta["updated"], meta["author"], NOTE_V02),
    ]


def fill_standard_version_table(table, meta: dict[str, str]) -> None:
    rows = standard_version_rows(meta)
    resize_table_rows(table, len(rows))
    headers = ["版本", "日期", "修订人", "修订说明"]
    for ci, val in enumerate(headers):
        set_cell_text(table.rows[0].cells[ci], val, bold=True)
    for ri, row_data in enumerate(rows, start=1):
        for ci, val in enumerate(row_data):
            set_cell_text(table.rows[ri].cells[ci], val)


def fill_change_log_table(table, meta: dict[str, str]) -> None:
    header_cells = [c.text.strip() for c in table.rows[0].cells]
    if "变更说明" not in header_cells and "修订说明" not in "".join(header_cells):
        return
    rows = standard_version_rows(meta)
    resize_table_rows(table, len(rows))
    # 日期 | 版本 | 修订人/姓名 | 变更说明
    name_col = "姓名" if "姓名" in header_cells else "修订人"
    mapping = {
        "日期": lambda r: r[1],
        "版本": lambda r: r[0],
        name_col: lambda r: r[2],
        "修订人": lambda r: r[2],
        "姓名": lambda r: r[2],
        "变更说明": lambda r: r[3],
        "修订说明": lambda r: r[3],
    }
    for ci, title in enumerate(header_cells):
        if title in ("版本", "日期", "修订人", "姓名", "变更说明", "修订说明"):
            set_cell_text(table.rows[0].cells[ci], title, bold=True)
    for ri, row_data in enumerate(rows, start=1):
        for ci, title in enumerate(header_cells):
            fn = mapping.get(title)
            if fn:
                set_cell_text(table.rows[ri].cells[ci], fn(row_data))


def update_cover_version(doc: Document, meta: dict[str, str]) -> int:
    changed = 0
    for p in doc.paragraphs[:25]:
        t = p.text.strip()
        if t.startswith("当前版本："):
            new = f"当前版本：{V02}"
            if p.text != new:
                if p.runs:
                    p.runs[0].text = new
                    for r in p.runs[1:]:
                        r.text = ""
                else:
                    p.add_run(new)
                changed += 1
        elif t.startswith("版本："):
            new = f"版本：{V02}    日期：{format_cn_date(meta['updated'])}    作者：{meta['author']}"
            if p.text.strip() != new:
                if p.runs:
                    p.runs[0].text = new
                    for r in p.runs[1:]:
                        r.text = ""
                else:
                    p.add_run(new)
                changed += 1
    if doc.tables:
        row0 = doc.tables[0].rows
        for row in row0:
            cells = [c.text.strip() for c in row.cells]
            if len(cells) >= 2 and cells[0] == "版本" and cells[1].startswith("V"):
                if cells[1] != V02:
                    set_cell_text(row.cells[1], V02)
                    changed += 1
    return changed


def format_cn_date(iso_date: str) -> str:
    m = re.match(r"(\d{4})-(\d{2})-(\d{2})", iso_date)
    if not m:
        return iso_date
    y, mo, d = m.groups()
    return f"{y}年{int(mo)}月{int(d)}日"


def process_file(path: Path) -> None:
    doc = Document(path)
    meta = parse_metadata(doc)
    meta["updated"] = normalize_date(meta["updated"])
    meta["created"] = normalize_date(meta["created"])

    cover_changes = update_cover_version(doc, meta)

    version_table = table_after_heading(doc, "版本记录")
    version_updated = False
    if version_table is not None:
        fill_standard_version_table(version_table, meta)
        version_updated = True

    change_table = find_change_log_table(doc)
    change_updated = False
    if change_table is not None:
        fill_change_log_table(change_table, meta)
        change_updated = True

    doc.save(path)
    print(
        f"{path.name}: cover={cover_changes} "
        f"版本记录={'Y' if version_updated else 'N'} "
        f"更改记录={'Y' if change_updated else 'N'}"
    )


def main() -> None:
    for mod in ["S0", "S1", "S2", "S3", "S4"]:
        mod_dir = BASE / mod
        for path in sorted(mod_dir.glob("*.docx")):
            process_file(path)


if __name__ == "__main__":
    main()