"""
Emoji extras for Material.

Override the Twemoji Index with an extended version that includes short names for Material icons, Fontawesome, etc.
"""
import os
import glob
import copy
from pymdownx import twemoji_db
from pymdownx.emoji import TWEMOJI_SVG_CDN, add_attriubtes
import codecs
import xml.etree.ElementTree as etree

RESOURCES = os.path.dirname(os.path.abspath(__file__))


def material():
    """Provide a copied Twemoji index with additional codes for Material included icons."""

    # Copy the Twemoji index
    index = {
        "name": 'twemoji',
        "emoji": copy.deepcopy(twemoji_db.emoji),
        "aliases": copy.deepcopy(twemoji_db.aliases)
    }

    # Find our icons
    icon_path = os.path.join(RESOURCES, '.icons')
    norm_base = icon_path.replace('\\', '/') + '/'
    for result in glob.glob(icon_path.replace('\\', '/') + '/**/*.svg', recursive=True):
        name = ':{}:'.format(result.replace('\\', '/').replace(norm_base, '', 1).replace('/', '-').lstrip('.')[:-4])
        if name not in index['emoji'] and name not in index['aliases']:
            # Easiest to just store the path and pull it out from the index
            index["emoji"][name] = {'name': name, 'path': result}

    return index


def to_svg(index, shortname, alias, uc, alt, title, category, options, md):
    """Return SVG element."""

    is_unicode = uc is not None

    if is_unicode:
        svg_path = TWEMOJI_SVG_CDN

        attributes = {
            "class": options.get('classes', index),
            "alt": alt,
            "src": "%s%s.svg" % (
                options.get('image_path', svg_path),
                uc
            )
        }

        if title:
            attributes['title'] = title

        add_attriubtes(options, attributes)

        return etree.Element("img", attributes)
    else:
        el = etree.Element('span', {"class": options.get('classes', index)})
        svg_path = md.inlinePatterns['emoji'].emoji_index['emoji'][shortname]['path']
        with codecs.open(svg_path, 'r', encoding='utf-8') as f:
            el.text = md.htmlStash.store(f.read())
        return el