Your account does not have sufficient funds to create a Capsul

capsulflask/console.py

@@ -83,6 +83,7 @@ def create():
   vm_sizes = get_model().vm_sizes_dict()
   operating_systems = get_model().operating_systems_dict()
   ssh_public_keys = get_model().list_ssh_public_keys_for_account(session["account"])
+  account_balance = get_account_balance()
   errors = list()
   created_os = None
 
@@ -140,6 +141,11 @@ def create():
       )
       created_os = os
   
+  affordable_vm_sizes = dict()
+  for key, vm_size in vm_sizes.items():
+    if vm_size["dollars_per_month"] < account_balance:
+      affordable_vm_sizes[key] = vm_size
+
   for error in errors:
     flash(error)
 
@@ -148,9 +154,10 @@ def create():
     created_os=created_os,
     ssh_public_keys=ssh_public_keys,
     ssh_public_key_count=len(ssh_public_keys),
-    has_ssh_public_keys=len(ssh_public_keys) > 0,
+    no_ssh_public_keys=len(ssh_public_keys) == 0,
     operating_systems=operating_systems,
-    vm_sizes=vm_sizes
+    cant_afford=len(affordable_vm_sizes) == 0,
+    vm_sizes=affordable_vm_sizes
   )
 
 @bp.route("/ssh", methods=("GET", "POST"))
@@ -208,26 +215,26 @@ def get_payments():
   return g.user_payments
 
 def get_account_balance():
-
-
   average_number_of_days_in_a_month = 30.44
 
   vm_cost_dollars = 0.0
   for vm in get_vms():
     end_datetime = vm["deleted"] if vm["deleted"] else datetime.now()
     vm_months = ( end_datetime - vm["created"] ).days / average_number_of_days_in_a_month
-    vm_cost_dollars += vm_months * vm["dollars_per_month"]
-
-  payment_total = sum(map(lambda x: x["dollars"], get_payments()))
+    vm_cost_dollars += vm_months * float(vm["dollars_per_month"])
 
+  payment_dollars_total = sum(map(lambda x: x["dollars"], get_payments()))
 
+  return payment_dollars_total - vm_cost_dollars
 
 @bp.route("/account-balance")
 @account_required
 def account_balance():
   errors = list()
   payments = get_payments()
+  account_balance = get_account_balance()
 
-  
-
-  return render_template("account-balance.html")
+  return render_template(
+    "account-balance.html", 
+    payments=payments, has_payments=len(payments)>0, account_balance=account_balance
+  )

capsulflask/db_model.py

@@ -142,12 +142,12 @@ class DBModel:
 
   def list_payments_for_account(self, email):
     self.cursor.execute(""" 
-      SELECT payments.id, payments.dollars, payments.created
+      SELECT  payments.dollars, payments.created
       FROM payments WHERE payments.email = %s""", 
       (email, )
     )
     return list(map(
-      lambda x: dict(id=x[0], dollars=x[1], created=x[2]), 
+      lambda x: dict(dollars=x[0], created=x[1]), 
       self.cursor.fetchall()
     ))
 

capsulflask/templates/create-capsul.html

@@ -20,21 +20,31 @@
     </p> 
   {% endif %}
 {% else %}
-  {% if has_ssh_public_keys  %} 
+  {% if cant_afford  %} 
+    <p>
+      Your account does not have sufficient funds to create a Capsul.
+      (Must be funded enough to last at least one month at creation time).
+    </p> 
+    <p>You must <a href="/console/account-balance">add funds to your account</a> before you can create a Capsul.</p>
+  {% else %}
+    {% if no_ssh_public_keys  %} 
+      <p>You don't have any ssh public keys yet.</p> 
+      <p>You must <a href="/console/ssh">upload one</a> before you can create a Capsul.</p>
+    {% else %} 
       <pre>
-CAPSUL SIZES
-============
-type     monthly   cpus  mem     ssd   net*
------    -------   ----  ---     ---   --- 
-f1-s     $5.33     1     512M    25G   .5TB
-f1-m     $7.16     1     1024M   25G   1TB 
-f1-l     $8.92     1     2048M   25G   2TB 
-f1-x     $16.16    2     4096M   25G   4TB 
-f1-xx    $29.66    4     8096M   25G   8TB 
-f1-xxx   $57.58    8     16G     25G   16TB
+      CAPSUL SIZES
+      ============
+      type     monthly   cpus  mem     ssd   net*
+      -----    -------   ----  ---     ---   --- 
+      f1-s     $5.33     1     512M    25G   .5TB
+      f1-m     $7.16     1     1024M   25G   1TB 
+      f1-l     $8.92     1     2048M   25G   2TB 
+      f1-x     $16.16    2     4096M   25G   4TB 
+      f1-xx    $29.66    4     8096M   25G   8TB 
+      f1-xxx   $57.58    8     16G     25G   16TB
       
-* net is calculated as a per-month average
-* all VMs come standard with one public IPv4 addr</pre>
+      * net is calculated as a per-month average
+      * all VMs come standard with one public IPv4 addr</pre>
 
       <form method="post">
         <div class="row justify-start">
@@ -67,9 +77,8 @@ f1-xxx   $57.58    8     16G     25G   16TB
           <input type="submit" value="Create">
         </div>
       </form>
-  {% else %} 
-    <p>You don't have any ssh public keys yet.</p> 
-    <p>You must <a href="/console/ssh">upload one</a> before you can create a Capsul.</p>
+    {% endif %}
+
   {% endif %}
 
 {% endif %}
@@ -77,7 +86,7 @@ f1-xxx   $57.58    8     16G     25G   16TB
 {% endblock %}
 
 {% block subcontent %}
-  {% if ssh_public_keys[0] is defined %} 
+  {% if not cant_afford and not no_ssh_public_keys %} 
   <p>
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   </p>