Credential page

agropper · Apr 8, 2021 · 2ab4a00 · 2ab4a00
1 parent dbbf9c3
commit 2ab4a00
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Showing 5 changed files with 79 additions and 2 deletions.
diff --git a/.gitignore b/.gitignore
@@ -1,2 +1,3 @@
 *.pyc
 __pycache__/*
+key.*
diff --git a/app.py b/app.py
@@ -2,7 +2,11 @@
 
 import stripe
 import didkit
+import errno
+import json
+from issue_credential import issueCredential
 from flask import Flask, jsonify, render_template, request
+from didkit import generateEd25519Key
 
 app = Flask(__name__)
 
@@ -27,8 +31,9 @@ def index():
 
 @app.route("/success")
 def success():
-    # mail guy
-    return 'Success'
+    credential = json.dumps(issueCredential(request), indent=2, sort_keys=True)
+
+    return render_template('credential.html', credential=credential, didkit_version=didkit.getVersion())
 
 
 @app.route("/cancelation")
@@ -76,3 +81,17 @@ def create_checkout_session():
         return jsonify({"sessionId": checkout_session["id"]})
     except Exception as e:
         return jsonify(error=str(e)), 403
+
+
+if __name__ == 'app':
+    flags = os.O_CREAT | os.O_EXCL | os.O_WRONLY
+    try:
+        file_handle = os.open('key.jwk', flags)
+    except OSError as e:
+        if e.errno == errno.EEXIST:
+            pass
+        else:
+            raise
+    else:
+        with os.fdopen(file_handle, 'w') as file_obj:
+            file_obj.write(generateEd25519Key())
diff --git a/issue_credential.py b/issue_credential.py
@@ -0,0 +1,51 @@
+from datetime import datetime, timedelta
+import didkit
+import json
+import stripe
+import uuid
+
+
+def issueCredential(request):
+    session_id = request.args.get("session_id")
+    session_data = stripe.checkout.Session.retrieve(session_id)
+
+    with open('key.jwk', "r") as f:
+        key = f.readline()
+    f.close()
+
+    did_key = request.form.get('subject_id', didkit.keyToDID("key", key))
+    verification_method = didkit.keyToVerificationMethod("key", key)
+    issuance_date = datetime.utcnow().replace(microsecond=0)
+    expiration_date = issuance_date + timedelta(weeks=4)
+
+    credential = {
+        "id": "urn:uuid:" + uuid.uuid4().__str__(),
+        "@context": [
+            "https://www.w3.org/2018/credentials/v1",
+            "https://www.w3.org/2018/credentials/examples/v1",
+        ],
+        "type": ["VerifiableCredential"],
+        "issuer": did_key,
+        "issuanceDate": issuance_date.isoformat() + "Z",
+        "expirationDate": expiration_date.isoformat() + "Z",
+        "credentialSubject": {
+            "@context": [
+                {
+                    "email": "https://schema.org/Text"
+                }
+            ],
+            "id": "urn:uuid:" + uuid.uuid4().__str__(),
+            "email": session_data["customer_details"]["email"]
+        },
+    }
+
+    didkit_options = {
+        "proofPurpose": "assertionMethod",
+        "verificationMethod": verification_method,
+    }
+
+    credential = didkit.issueCredential(
+        credential.__str__().replace("'", '"'),
+        didkit_options.__str__().replace("'", '"'),
+        key)
+    return json.loads(credential)
diff --git a/templates/base.html b/templates/base.html
@@ -7,6 +7,7 @@
     <link href="https://unpkg.com/tailwindcss@^2/dist/tailwind.min.css" rel="stylesheet">
     <script src="https://js.stripe.com/v3/"></script>
     <script src="{{ url_for('static', filename='main.js') }}"></script>
+    <script src="https://unpkg.com/[email protected]/dist/credential-handler-polyfill.min.js"></script>
   </head>
   <body class="w-screen h-screen items-center justify-center flex">
     {% block content %}{% endblock %}

diff --git a/templates/credential.html b/templates/credential.html
@@ -0,0 +1,5 @@
+{% extends "base.html" %}
+
+{% block content %}
+  <pre class="whitespace-pre-wrap m-auto">{{ credential }}</pre>
+{% endblock %}