import xml.etree.ElementTree as ET
import os
from typing import List, Dict, Any
from docx import Document
from docx.enum.text import WD_PARAGRAPH_ALIGNMENT

import logging
logger = logging.getLogger("desktopenv.metric.docs")

def find_default_font(config_file_path, rules):
    """Find the default font in LibreOffice Writer."""
    default_font = None
    expected_font = rules["font_name"]

    try:
        tree = ET.parse(config_file_path)
        root = tree.getroot()

        # Define the XML namespace used in the file
        namespace = {'oor': 'http://openoffice.org/2001/registry'}

        # Search for the node containing the default font setting for LibreOffice Writer
        for elem in root.findall('.//item[@oor:path="/org.openoffice.Office.Writer/DefaultFont"]', namespace):
            for prop in elem.findall('.//prop[@oor:name="Standard"]', namespace):
                for value in prop.findall('value', namespace):
                    default_font = value.text
    except Exception as e:
        logger.error(f"Error: {e}")

    return 1 if default_font == expected_font else 0


def contains_page_break(docx_file):
    doc = Document(docx_file)

    namespaces = {'w': 'http://schemas.openxmlformats.org/wordprocessingml/2006/main'}

    for paragraph in doc.paragraphs:
        for run in paragraph.runs:
            br_elems = run.element.findall('.//w:br', namespaces)
            for br in br_elems:
                if br is not None and '{http://schemas.openxmlformats.org/wordprocessingml/2006/main}type' in br.attrib and \
                        br.attrib['{http://schemas.openxmlformats.org/wordprocessingml/2006/main}type'] == 'page':
                    return 1
    return 0


def compare_docx_files(file1, file2):
    doc1 = Document(file1)
    doc2 = Document(file2)

    doc1_paragraphs = [p.text for p in doc1.paragraphs]
    doc2_paragraphs = [p.text for p in doc2.paragraphs]

    if len(doc1_paragraphs) != len(doc2_paragraphs):
        return 0

    # Compare each paragraph
    for p1, p2 in zip(doc1_paragraphs, doc2_paragraphs):
        if p1 != p2:
            return 0

    return 1


def compare_docx_tables(docx_file1, docx_file2):
    doc1 = Document(docx_file1)
    doc2 = Document(docx_file2)

    # get list of tables in docx
    tables1 = doc1.tables
    tables2 = doc2.tables

    if len(tables1) != len(tables2):
        return 0

    # Compare each table content
    for table1, table2 in zip(tables1, tables2):

        if len(table1.rows) != len(table2.rows) or len(table1.columns) != len(table2.columns):
            return 0

        # Compare each cell
        for i in range(len(table1.rows)):
            for j in range(len(table1.columns)):
                if table1.cell(i, j).text != table2.cell(i, j).text:
                    return 0

    return 1


def compare_line_spacing(docx_file1, docx_file2):
    doc1 = Document(docx_file1)
    doc2 = Document(docx_file2)

    if len(doc1.paragraphs) != len(doc2.paragraphs):
        return 0

    # Compare each paragraph line spacing
    for para1, para2 in zip(doc1.paragraphs, doc2.paragraphs):

        spacing1 = para1.paragraph_format.line_spacing
        spacing2 = para2.paragraph_format.line_spacing

        if spacing1 != spacing2:
            return 0

    return 1


def compare_insert_equation(docx_file1, docx_file2):
    if not compare_docx_files(docx_file1, docx_file2):
        return 0

    doc1 = Document(docx_file1)
    doc2 = Document(docx_file2)

    # Compare each paragraph if it contains equation
    for para1, para2 in zip(doc1.paragraphs, doc2.paragraphs):
        for run1, run2 in zip(para1.runs, para2.runs):
            if run1.element.xpath('.//w:object') and run2.element.xpath('.//w:object'):
                return 1
    return 0


def compare_font_names(docx_file, rules: List[Dict[str, Any]]):
    doc = Document(docx_file)
    expected_font = rules["font_name"]

    for paragraph in doc.paragraphs:
        for run in paragraph.runs:
            font_name = run.font.name
            if font_name != expected_font:
                return 0
    return 1


def compare_subscript_contains(docx_file1, docx_file2):
    doc1 = Document(docx_file1)
    doc2 = Document(docx_file2)

    for para1, para2 in zip(doc1.paragraphs, doc2.paragraphs):
        for run1, run2 in zip(para1.runs, para2.runs):
            # check if two paras both contain subscript
            if run1.font.subscript and run2.font.subscript:
                return 1
    return 0


def has_page_numbers_in_footers(docx_file):
    doc = Document(docx_file)

    for section in doc.sections:
        footer = section.footer
        if footer is None:
            return 0
        footer_text = footer.paragraphs[0].text if footer.paragraphs else ''
        if not any(char.isdigit() for char in footer_text):
            # if no digit in footer, then no page number
            return 0
    return 1


def is_first_line_centered(docx_file):
    doc = Document(docx_file)
    first_paragraph = doc.paragraphs[0]

    # check if the first line is center justified
    return 1 if first_paragraph.paragraph_format.alignment == WD_PARAGRAPH_ALIGNMENT.CENTER else 0


def check_file_exists(directory, filename):
    file_path = os.path.join(directory, filename)
    return 1 if os.path.isfile(file_path) else 0


def compare_contains_image(docx_file1, docx_file2):
    doc1 = Document(docx_file1)
    doc2 = Document(docx_file2)

    for para1, para2 in zip(doc1.paragraphs, doc2.paragraphs):
        for run1, run2 in zip(para1.runs, para2.runs):
            if ('graphicData' in run1._element.xml and 'graphicData' not in run2._element.xml) or (
                    'graphicData' not in run1._element.xml and 'graphicData' in run2._element.xml):
                return 0
    return 1

# file1 = 'path/to/file1.docx'
# file2 = 'path/to/file2.docx'

# print(are_docx_files_same(file1, file2))
# Replace 'your_document.docx' with the path to your document
# result = contains_page_break('your_document.docx')
# print(result)

# config_path = "/home/[username]/.config/libreoffice/4/user/registrymodifications.xcu"
# print(find_default_font("Ani", config_path))