from pyramid.httpexceptions import HTTPFound
from pyramid.traversal import (find_root, find_resource)

from flatfilecms.models import (YAML, Markdown)

def redirect(self, url):
    return HTTPFound(location=url)


def set_content_type(self, content_type):
    self.request.response.content_type = content_type


def blog(self, options):
    path = options.get('base', '/')
    root = find_root(self.context)
    tree = find_resource(root, path)
    postlist = []
    for name, item in tree.walk():
        if isinstance(item, (YAML, Markdown)) and 'published' in item.page:
            postlist.append((f"{path}/{name}", item))
    self.pages = sorted(postlist, key=lambda t: t[1].page['published'])