# -*- coding: utf-8 -*-

"""
Interlinks
=========================

This plugin allows you to include "interwiki" or shortcuts links into the blog, as keyword>rest_of_url

"""

from bs4 import BeautifulSoup
from bs4 import SoupStrainer
from pelican import signals
import re

interlinks = {}

def getSettings (generator):

	global interlinks

	interlinks = {'this': generator.settings['SITEURL']+"/"}
	if 'INTERLINKS' in generator.settings:
		for key, value in generator.settings['INTERLINKS'].items():
			interlinks[key] = value

			
def parse_links(instance):

	if instance._content is not None:
		content = instance._content
		
		if '<a' in content:
			text = BeautifulSoup(content, "html.parser", parse_only=SoupStrainer("a"))
			for link in text.find_all("a",href=re.compile("(.+?)>")):
				old_tag = str(link)
				url = link.get('href')
				m = re.search(r"(.+?)>", url).groups()
				name = m[0]
				if name in interlinks:
					hi = url.replace(name + ">", interlinks[name])
					link['href'] = hi
				
				content = content.replace(old_tag, str(link))

		if '<img' in content:
			text = BeautifulSoup(content, "html.parser", parse_only=SoupStrainer("img"))
			for img in text.find_all('img', src=re.compile("(.+?)>")):
				old_tag = str(img)
				url = img.get('src')
				m = re.search(r"(.+?)>", url).groups()
				name = m[0]
				if name in interlinks:
					hi = url.replace(name+">",interlinks[name])
					img['src'] = hi
				content = content.replace(old_tag.replace("&gt;", ">").replace("/>",">"), str(img))

		instance._content = content

def register():
	signals.generator_init.connect(getSettings)
	signals.content_object_init.connect(parse_links)