#!/usr/bin/env python3
#pylint: disable=invalid-name
'''
aptly-resource out

https://github.com/gopythongo/aptly-api-client

HTTPS_PROXY="http://localhost:8080" \
CURL_CA_BUNDLE="$HOME/.mitmproxy/mitmproxy-ca-cert.pem" \
./out_test.py

'''

import json
import sys
import os
import functools
import requests
import semver

root      = os.path.dirname(os.path.abspath(__file__))
config    = json.loads(sys.stdin.read())

previous_version = False
if 'version' in config and 'version' in config['version']:
    previous_version = config['version']['version']

package_file_uri = config['source']['repo_uri'] \
    + '/' + config['source']['repo'] \
    + '/dists' \
    + '/' + config['source']['distribution'] \
    + '/' + config['source']['component'] \
    + '/binary-' + config['source']['architecture'] \
    + '/Packages'

packages_data = requests.get(package_file_uri).text
packages_data_blocks = packages_data.strip().split('\n\n')

packages = []
versions = []

for packages_data_block in packages_data_blocks:
    packages_data_block_rows = packages_data_block.split('\n')
    package = {}
    for packages_data_block_row in packages_data_block_rows:
        package_data = packages_data_block_row.split(': ')

        package[package_data[0]] = package_data[1]

    if package['Package'] != config['source']['package']:
        continue

    if previous_version \
        and semver.compare(previous_version, package['Version']) > 0:
        continue

    versions.append({
        'version': package['Version']
        })

versions.reverse()

def compare_func(a, b):
    return semver.compare(a['version'], b['version'])

versions.sort(key=functools.cmp_to_key(compare_func))

if not previous_version and versions:
    versions = [versions[-1]]

print(json.dumps(versions))