import asyncio
import didkit
import json
from jinja2 import Environment, FileSystemLoader, select_autoescape

jwk_issuer = didkit.generate_ed25519_key()
jwk_subject = didkit.generate_ed25519_key()

did_issuer = didkit.key_to_did("key", jwk_issuer)
did_subject = didkit.key_to_did("key", jwk_subject)


async def main():
    env = Environment(
        loader=FileSystemLoader("vc_templates"),
        autoescape=select_autoescape()
    )
    unsigned_vc_template = env.get_template("affiliation.jsonld.j2")
    data = {
        "vc_id": "http://example.org/credentials/3731",
        "issuer_did": did_issuer,
        "subject_did": did_subject,
        "issuance_date": "2020-08-19T21:41:50Z",
        "subject_is_member_of": "Pangea"
    }
    unsigned_vc = unsigned_vc_template.render(data)
    signed_credential = await didkit.issue_credential(
        unsigned_vc,
        json.dumps({"proofFormat": "ldp"}),
        jwk_issuer)
    print(signed_credential)

asyncio.run(main())