# -*- coding: utf-8 -*-
"""
    Copyright (c) Marco Milanesi <kpanic@gnufunk.org>

    A plugin to list your Github Activity
    To enable it set in your pelican config file the GITHUB_ACTIVITY_FEED
    parameter pointing to your github activity feed.

    for example my personal activity feed is:

        https://github.com/kpanic.atom

    in your template just write a for in jinja2 syntax against the
    github_activity variable.

    github_activity is a list containing raw html from github so you can
    include it directly in your template

"""

from pelican import signals
from pelican.utils import singleton


@singleton
class GitHubActivity():
    """
        A class created to fetch github activity with feedparser
    """
    def __init__(self, generator):
        try:
            import feedparser
            self.ga = feedparser.parse(
                generator.settings['GITHUB_ACTIVITY_FEED'])
        except ImportError:
            raise Exception("unable to find feedparser")

    def fetch(self):
        """
            returns a list of html snippets fetched from github actitivy feed
        """
        return [activity['content'][0]['value'].strip()
            for activity in self.ga['entries']]


def add_github_activity(generator, metadata):
    """
        registered handler for the github activity plugin
    """
    if 'GITHUB_ACTIVITY_FEED' in generator.settings.keys():

        ga = GitHubActivity(generator)

        ga_html_snippets = ga.fetch()
        generator.context['github_activity'] = ga_html_snippets


def register():
    """
        Plugin registration
    """
    signals.article_generate_context.connect(add_github_activity)