#!/usr/bin/env python3
#
# Builds a list of nightly builds from GitHub releases
#
# Requires the following environment variables:
# SNAPSHOTS_BUCKET
# AWS_ACCESS_KEY_ID
# AWS_SECRET_ACCESS_KEY

import os
import re
import sys
import json

import github
import jinja2

REPO = 'vyos/vyos-nightly-build'

def list_images(repo):
    images = []

    # GitHub returns releases sorted by date from newest to oldest,
    # so we don't need to sort them
    releases = repo.get_releases()
    for r in releases:
        iso = r.assets[0]
        sig = r.assets[1]

        # Nightly build releases have two assets:
        # an ISO and a Minisign signature file
        # The signature is always the second asset in the list
        image = {}
        image["iso_url"] = iso.browser_download_url
        image["sig_url"] = sig.browser_download_url
        image["title"] = r.title

        images.append(image)

    return images

def render_image_list(images):
    tmpl = jinja2.Template("""
      <ul>
      {% for i in images %}
        <li><a href="{{i.iso_url}}">{{i.title}}</a> (<a href="{{i.sig_url}}">sig</a>)</li>
      {% endfor %}
     </ul>
    """)

    return tmpl.render(images=images)

if __name__ == '__main__':
    gh_token_string = os.getenv('GH_ACCESS_TOKEN')
    gh_auth = github.Auth.Token(gh_token_string)
    gh = github.Github(auth=gh_auth)
    repo = gh.get_repo(REPO)

    images = list_images(repo)
    print(render_image_list(images))