"""
===============================================================================
FILE: services/office/word_builder.py
PROJECT: SCUD Orion AI (Office Domain)
ROLE: Сборка форматированного документа MS Word (.docx) из распознанного текста.
===============================================================================
"""

import os
from typing import List, Dict, Any
from docx import Document
from docx.shared import Pt, Inches
from docx.enum.text import WD_ALIGN_PARAGRAPH


def build_docx_from_ocr(pages_data: List[Dict[str, Any]], output_filepath: str, doc_title: str = "Распознанный документ") -> str:
    """
    Создает файл .docx по ГОСТ-стандартам делопроизводства:
    - Шрифт Times New Roman 12-14pt.
    - Межстрочный интервал 1.15.
    - Разделители страниц и колонтитулы.
    """
    doc = Document()

    sections = doc.sections
    for section in sections:
        section.top_margin = Inches(0.79)
        section.bottom_margin = Inches(0.79)
        section.left_margin = Inches(0.79)
        section.right_margin = Inches(0.59)

    for p_idx, page in enumerate(pages_data):
        page_num = page.get("page", p_idx + 1)
        text_content = page.get("text", "")

        if p_idx > 0:
            doc.add_page_break()

        lines = text_content.splitlines()
        for line in lines:
            line_str = line.strip()
            if not line_str:
                continue

            p = doc.add_paragraph()
            p.paragraph_format.space_after = Pt(3)
            p.paragraph_format.line_spacing = 1.15

            if any(h in line_str.upper() for h in ["ПРЕДСЕДАТЕЛЬСТВОВАЛ", "ПРОТОКОЛ", "ПОВЕСТКА", "РЕШИЛИ:", "ОТМЕТИЛИ:"]):
                p.alignment = WD_ALIGN_PARAGRAPH.CENTER
                run = p.add_run(line_str)
                run.font.name = "Times New Roman"
                run.font.size = Pt(13)
                run.font.bold = True
            else:
                p.alignment = WD_ALIGN_PARAGRAPH.JUSTIFY
                run = p.add_run(line_str)
                run.font.name = "Times New Roman"
                run.font.size = Pt(12)

    os.makedirs(os.path.dirname(output_filepath), exist_ok=True)
    doc.save(output_filepath)
    return output_filepath