add advanced app setting: delete app

app/developer/templates/developer/client_details/advanced.html

@@ -0,0 +1,11 @@
+{% extends 'developer/client_details/base.html' %}
+
+{% set client_details_page = "advanced" %}
+
+{% block client_details_content %}
+  <form method="post">
+    {{ form.csrf_token }}
+    <h3>Please note that this operation is not reversible!</h3>
+    <button type="submit" class="btn btn-danger">Delete App</button>
+  </form>
+{% endblock %}

app/developer/templates/developer/client_details/base.html

@@ -29,6 +29,11 @@
           <span class="icon mr-3"><i class="fe fe-shield"></i></span>OAuth Endpoints
         </a>
 
+        <a href="{{ url_for('developer.client_detail_advanced', client_id=client.id) }}"
+           class="list-group-item list-group-item-action {{ 'active' if client_details_page == 'advanced' }}">
+          <span class="icon mr-3"><i class="fe fe-alert-octagon"></i></span>Advanced Setting
+        </a>
+
       </div>
     </div>
     <div class="col-lg-9">

app/developer/views/client_detail.py

@@ -119,3 +119,35 @@ def client_detail_oauth_endpoint(client_id):
     return render_template(
         "developer/client_details/oauth_endpoint.html", client=client
     )
+
+
+class AdvancedForm(FlaskForm):
+    pass
+
+
+@developer_bp.route("/clients/<client_id>/advanced", methods=["GET", "POST"])
+@login_required
+def client_detail_advanced(client_id):
+    form = AdvancedForm()
+    client = Client.get(client_id)
+    if not client:
+        flash("no such app", "warning")
+        return redirect(url_for("developer.index"))
+
+    if client.user_id != current_user.id:
+        flash("you cannot see this app", "warning")
+        return redirect(url_for("developer.index"))
+
+    if form.validate_on_submit():
+        # delete client
+        client_name = client.name
+        Client.delete(client.id)
+        db.session.commit()
+        LOG.d("Remove client %s", client)
+        flash(f"{client_name} has been deleted successfully", "success")
+
+        return redirect(url_for("developer.index"))
+
+    return render_template(
+        "developer/client_details/advanced.html", form=form, client=client
+    )