user can buy 1-year coupon

app/dashboard/views/coupon.py

@@ -4,7 +4,7 @@ from flask_login import login_required, current_user
 from flask_wtf import FlaskForm
 from wtforms import StringField, validators
 
-from app.config import ADMIN_EMAIL
+from app.config import ADMIN_EMAIL, PADDLE_VENDOR_ID, PADDLE_COUPON_ID
 from app.dashboard.base import dashboard_bp
 from app.db import Session
 from app.email_utils import send_email
@@ -55,10 +55,6 @@ def coupon_route():
     if coinbase_subscription and coinbase_subscription.is_active():
         can_use_coupon = False
 
-    if not can_use_coupon:
-        flash("You already have another subscription.", "warning")
-        return redirect(url_for("dashboard.index"))
-
     if coupon_form.validate_on_submit():
         code = coupon_form.code.data
 
@@ -112,4 +108,10 @@ def coupon_route():
         else:
             flash(f"Code *{code}* expired or invalid", "warning")
 
-    return render_template("dashboard/coupon.html", coupon_form=coupon_form)
+    return render_template(
+        "dashboard/coupon.html",
+        coupon_form=coupon_form,
+        PADDLE_VENDOR_ID=PADDLE_VENDOR_ID,
+        PADDLE_COUPON_ID=PADDLE_COUPON_ID,
+        can_use_coupon=can_use_coupon,
+    )

templates/dashboard/coupon.html

@@ -2,27 +2,66 @@
 
 {% set active_page = "dashboard" %}
 
+{% block head %}
+  <script src="https://cdn.paddle.com/paddle/paddle.js"></script>
+  <script>
+    if (window.Paddle === undefined) {
+      console.log("cannot load Paddle from CDN");
+      document.write('<script src="/static/vendor/paddle.js"><\/script>')
+    }
+  </script>
+
+  <style type="text/css">
+      html.mvc__a.mvc__lot.mvc__of.mvc__classes.mvc__to.mvc__increase.mvc__the.mvc__odds.mvc__of.mvc__winning.mvc__specificity, html.mvc__a.mvc__lot.mvc__of.mvc__classes.mvc__to.mvc__increase.mvc__the.mvc__odds.mvc__of.mvc__winning.mvc__specificity > body {
+          position: static;
+      }
+  </style>
+
+{% endblock %}
+
 {% block title %}
   Coupon
 {% endblock %}
 
 {% block default_content %}
+  {% if can_use_coupon %}
+    <div class="card">
+      <div class="card-body">
+        <h1 class="h2">Coupon</h1>
+
+        <div class="mb-4">
+          Please enter the coupon here to upgrade your account or extend your current subscription.
+        </div>
+
+        <form method="post">
+          {{ coupon_form.csrf_token }}
+
+          {{ coupon_form.code(class="form-control", placeholder="Licence Code") }}
+          {{ render_field_errors(coupon_form.code) }}
+          <button class="btn btn-success mt-2">Apply</button>
+        </form>
+      </div>
+    </div>
+  {% endif %}
+
   <div class="card">
     <div class="card-body">
-      <h1 class="h2">Coupon</h1>
-
-      <div class="mb-4">
-        Please enter the coupon here to upgrade your account or extend your current subscription.
+      <h2>1-year coupon</h2>
+      <div class="mb-3">
+        You can buy a 1-year coupon that allows anyone to have the SimpleLogin premium for 1 year.
+        Can be an idea for a gift card :).
+        After the payment, the coupon will be sent to you by email.
       </div>
-
-      <form method="post">
-        {{ coupon_form.csrf_token }}
-
-        {{ coupon_form.code(class="form-control", placeholder="Licence Code") }}
-        {{ render_field_errors(coupon_form.code) }}
-        <button class="btn btn-success mt-2">Apply</button>
-      </form>
+      <a href="#!" class="paddle_button btn btn-primary" data-product="{{ PADDLE_COUPON_ID }}">Buy 1-year SimpleLogin
+        coupon</a>
     </div>
   </div>
 
+
+{% endblock %}
+
+{% block script %}
+  <script type="text/javascript">
+    Paddle.Setup({vendor: {{PADDLE_VENDOR_ID}}});
+  </script>
 {% endblock %}