Find apps compatible with platform version in Nextcloud app store

app-store-find-versions.py

#!/usr/bin/python3

import json
import sys
from urllib.request import urlopen
from packaging import version

if len(sys.argv) > 1:
    expectedVersion = version.parse(sys.argv[1])
else:
    expectedVersion = version.parse('23.0.0')

compatibleApps = []
incompatibleApps = []

apiUrl = 'https://apps.nextcloud.com/api/v1/apps.json'
baseGithubUrl = 'https://github.com/nextcloud/'

#with open('apps.json', 'r') as infile:
with urlopen(apiUrl) as infile:
    data = json.load(infile)

for appSpec in data:
    # check if maintained by us using some tricks
    if not appSpec['issueTracker'].startswith(baseGithubUrl):
        continue

    compatibleVersion = None
    for releaseSpec in appSpec['releases']:
        platformVersionSpec = releaseSpec['platformVersionSpec']
        parts = platformVersionSpec.split(' ')
        if (parts[0][0:2] != '>='):
            sys.stderr.write('Unknown version spec format %s\n' % platformVersionSpec)
            continue

        minVersion = version.parse(parts[0][2:])
        maxVersion = None

        if len(parts) > 1:
            if parts[1][0] != '<':
                sys.stderr.write('Unknown version spec format %s\n' % platformVersionSpec)
                continue
            maxVersion = version.parse(parts[1][1:])

        if expectedVersion < minVersion:
            continue

        if maxVersion is None:
            # don't trust apps with no max version!
            continue

        if maxVersion is not None and expectedVersion >= maxVersion:
            continue

        if compatibleVersion is None or compatibleVersion < version.parse(releaseSpec['version']):
            compatibleVersion = version.parse(releaseSpec['version'])

    if compatibleVersion is not None and not compatibleVersion.is_prerelease:
        compatibleApps.append((appSpec, compatibleVersion))
    else:
        incompatibleApps.append(appSpec)

compatibleApps = sorted(compatibleApps, key=lambda a: a[0]['id'])
incompatibleApps = sorted(incompatibleApps, key=lambda a: a['id'])

print('## Platform version: ', expectedVersion)
print('### Compatible apps:')
for appSpec, version in compatibleApps:
    print('- [x] %s - %s - %s' % (appSpec['id'], version, appSpec['issueTracker']))

print()
print('### Incompatible apps:')
for appSpec in incompatibleApps:
    print('- [ ] %s - %s' % (appSpec['id'], appSpec['issueTracker']))