"""Compare schemas."""

import json
import pprint
import urllib.request

pp = pprint.PrettyPrinter(indent=2)
REGISTRY_URLS = {
    'dev': 'https://dev-schema-registry.dev.theorchard.io',
    'qa': 'https://qa-schema-registry.theorchard.io',
    'prod': 'https://prod-schema-registry.theorchard.io'
}


def main():
    for environment, url in REGISTRY_URLS.items():
        f = urllib.request.urlopen(f'{url}/schemas')
        raw = f.read().decode('utf-8')
        parsed = json.loads(raw)
        parse_res(environment, parsed)

def parse_res(environment, res):
    schemas = {}
    for schema in res:
        subject = schema.get('subject')
        version = f"version_{schema.get('version')}"
        schema_id = schema.get('id')
        if subject not in schemas:
            schemas[subject] = {}
        schemas[subject][version] = schema_id
    sorted_schemas = dict(sorted(schemas.items()))
    print_schemas(environment, sorted_schemas)


def print_schemas(environment, schemas):
    print(environment)
    for subject, versions in schemas.items():
        for version, schema_id in versions.items():
            print(f'{subject}:{version}: {schema_id}')


if __name__ == '__main__':
    main()