README.md

@@ -34,6 +34,7 @@ Interested in learning more? How about a trip to the the `docs/` folder:
   - [With docker-compose](./docs/local-set-up.md#docker_compose)
 - [**Configuring `capsul-flask`**](./docs/configuration.md)
   - [Example configuration from capsul.org (production)](./docs/configuration.md#example)
+  - [Configuring Currency](./docs/configuration.md#currency)
   - [Configuration-type-stuff that lives in the database ](./docs/configuration.md#config_that_lives_in_db)
   - [Loading variables from files (docker secrets)](./docs/configuration.md#docker_secrets)
 - [**`capsul-flask`'s relationship to its Database Server**](./docs/database.md)

capsulflask/__init__.py

@@ -74,7 +74,13 @@ app.config.from_mapping(
   #STRIPE_WEBHOOK_SECRET=os.environ.get("STRIPE_WEBHOOK_SECRET", default="")
 
   BTCPAY_PRIVATE_KEY=os.environ.get("BTCPAY_PRIVATE_KEY", default="").replace("\\n", "\n"),
-  BTCPAY_URL=os.environ.get("BTCPAY_URL", default="")
+  BTCPAY_URL=os.environ.get("BTCPAY_URL", default=""),
+
+  CURRENCY_NAME=os.environ.get("CURRENCY_NAME", default="dollar"), # display name (singular)
+  CURRENCY_SYMBOL=os.environ.get("CURRENCY_SYMBOL", default="$"), # display prefix symbol
+  CURRENCY_SWIPE_NAME=os.environ.get("CURRENCY_SWIPE_NAME", default="usd"), # identifier swipe expects in swipe.checkout.session.create
+  CURRENCY_BTCPAY_NAME=os.environ.get("CURRENCY_BTCPAY_NAME", default="USD"), # identifier btcpay expects in BTCPAY_CLIENT.create_invoice
+  CURRENCY_SWIPE_CONVERSION_FACTOR=os.environ.get("CURRENCY_SWIPE_CONVERSION_FACTOR", default=100) # swipe wants to work in the smallest unit - pennies, cents, etc
 )
 
 app.config['HUB_URL'] = os.environ.get("HUB_URL", default=app.config['BASE_URL'])

capsulflask/cli.py

@@ -121,7 +121,7 @@ def clean_up_unresolved_btcpay_invoices():
     if btcpay_invoice['status'] == "complete":
       current_app.logger.info(
         f"resolving btcpay invoice {invoice_id} "
-        f"({unresolved_invoice['email']}, ${unresolved_invoice['dollars']}) as completed "
+        f"({unresolved_invoice['email']}, {config['CURRENCY_SYMBOL']}{unresolved_invoice['amount']}) as completed "
       )
       resolved_invoice_email = get_model().btcpay_invoice_resolved(invoice_id, True)
 
@@ -131,13 +131,13 @@ def clean_up_unresolved_btcpay_invoices():
     elif days >= 1:
       current_app.logger.info(
         f"resolving btcpay invoice {invoice_id} "
-        f"({unresolved_invoice['email']}, ${unresolved_invoice['dollars']}) as invalidated, "
+        f"({unresolved_invoice['email']}, {config['CURRENCY_SYMBOL']}{unresolved_invoice['amount']}) as invalidated, "
         f"btcpay server invoice status: {btcpay_invoice['status']}"
       )
       get_model().btcpay_invoice_resolved(invoice_id, False)
       get_model().delete_payment_session("btcpay", invoice_id)
 
-delete_at_account_balance_dollars = -10
+delete_at_account_balance_amount = -10
 
 def get_warning_headline(warning_id, pluralize_capsul):
   return dict(
@@ -150,23 +150,23 @@ def get_warning_headline(warning_id, pluralize_capsul):
     zero_now= (
         f"You have run out of funds! You will no longer be able to create Capsuls.\n\n"
         f"As a courtesy, we'll let your existing Capsul{pluralize_capsul} keep running until your account "
-        "reaches a -$10 balance, at which point they will be deleted.\n\n"  
+        "reaches a -{config['CURRENCY_SYMBOL']}10 balance, at which point they will be deleted.\n\n"  
     ),
     delete_1w= (
         "You have run out of funds and have not refilled your account.\n\n"
         f"As a courtesy, we've let your existing Capsul{pluralize_capsul} keep running. "
-        f"However, your account will reach a -$10 balance some time next week and your Capsul{pluralize_capsul} "
+        f"However, your account will reach a -{config['CURRENCY_SYMBOL']}10 balance some time next week and your Capsul{pluralize_capsul} "
         "will be deleted.\n\n"
     ),
     delete_1d= (
         "You have run out of funds and have not refilled your account.\n\n"
         f"As a courtesy, we have let your existing Capsul{pluralize_capsul} keep running. "
-        f"However, your account will reach a -$10 balance by this time tomorrow and "
+        f"However, your account will reach a -{config['CURRENCY_SYMBOL']}10 balance by this time tomorrow and "
         f"your Capsul{pluralize_capsul} will be deleted.\n\n"
         f"Last chance to deposit funds now and keep your Capsul{pluralize_capsul} running! "
     ),
     delete_now= (
-        f"Your account reached a -$10 balance and your Capsul{pluralize_capsul} were deleted."
+        f"Your account reached a -{config['CURRENCY_SYMBOL']}10 balance and your Capsul{pluralize_capsul} were deleted."
     )
   )[warning_id]
 
@@ -205,7 +205,7 @@ def get_warnings_list():
     ),
     dict(
       id='delete_1w',
-      get_active=lambda balance_1w, balance_1d, balance_now: balance_1w  < delete_at_account_balance_dollars,
+      get_active=lambda balance_1w, balance_1d, balance_now: balance_1w  < delete_at_account_balance_amount,
       get_subject=lambda pluralize_capsul: f"Your Capsul{pluralize_capsul} Will be Deleted In Less Than a Week",
       get_body=lambda base_url, pluralize_capsul: (
         f"{get_warning_headline('delete_1w', pluralize_capsul)}"
@@ -216,7 +216,7 @@ def get_warnings_list():
     ),
     dict(
       id='delete_1d',
-      get_active=lambda balance_1w, balance_1d, balance_now: balance_1d  < delete_at_account_balance_dollars,
+      get_active=lambda balance_1w, balance_1d, balance_now: balance_1d  < delete_at_account_balance_amount,
       get_subject=lambda pluralize_capsul: f"Last Chance to Save your Capsul{pluralize_capsul}: Gone Tomorrow",
       get_body=lambda base_url, pluralize_capsul: (
         f"{get_warning_headline('delete_1d', pluralize_capsul)}"
@@ -225,7 +225,7 @@ def get_warnings_list():
     ),
     dict(
       id='delete_now',
-      get_active=lambda balance_1w, balance_1d, balance_now: balance_now < delete_at_account_balance_dollars,
+      get_active=lambda balance_1w, balance_1d, balance_now: balance_now < delete_at_account_balance_amount,
       get_subject=lambda pluralize_capsul: f"Capsul{pluralize_capsul} Deleted",
       get_body=lambda base_url, pluralize_capsul: (
         f"{get_warning_headline('delete_now', pluralize_capsul)}"

capsulflask/console.py

@@ -212,12 +212,12 @@ def create():
     # if a user deposits $7.50 and then creates an f1-s vm which costs 7.50 a month, 
     # then they have to delete the vm and re-create it, they will not be able to, they will have to pay again.
     # so for UX it makes a lot of sense to give a small margin of 25 cents for usability sake
-    if vm_size["dollars_per_month"] <= account_balance_in_one_month+0.25:
+    if vm_size["amount_per_month"] <= account_balance_in_one_month+0.25:
       month_funded_vm_sizes[key] = vm_size
 
     one_month_in_hours = float(730.5)
     two_hours_as_fraction_of_month = float(2)/one_month_in_hours
-    if float(vm_size["dollars_per_month"])*two_hours_as_fraction_of_month <= account_balance:
+    if float(vm_size["amount_per_month"])*two_hours_as_fraction_of_month <= account_balance:
       hour_funded_vm_sizes[key] = vm_size
 
   if request.method == "POST":
@@ -411,11 +411,11 @@ def account_balance():
     vm_months = get_vm_months_float(vm, datetime.utcnow())
     vms_billed.append(dict(
       id=vm["id"], 
-      dollars_per_month=vm["dollars_per_month"],
+      amount_per_month=vm["amount_per_month"],
       created=vm["created"].strftime("%b %d %Y"),
       deleted=vm["deleted"].strftime("%b %d %Y") if vm["deleted"] else "N/A",
       months=format(vm_months, '.3f'),
-      dollars=format(vm_months * float(vm["dollars_per_month"]), '.2f')
+      amount=format(vm_months * float(vm["amount_per_month"]), '.2f')
     ))
 
   return render_template(
@@ -427,7 +427,7 @@ def account_balance():
     btcpay_is_working="BTCPAY_CLIENT" in current_app.config,
     payments=list(map(
       lambda x: dict(
-        dollars=x["dollars"], 
+        amount=x["amount"], 
         class_name="invalidated" if x["invalidated"] else "", 
         created=x["created"].strftime("%b %d %Y")
       ), 

capsulflask/db.py

@@ -50,7 +50,7 @@ def init_app(app, is_running_server):
   hasSchemaVersionTable = False
   actionWasTaken = False
   schemaVersion = 0
-  desiredSchemaVersion = 23
+  desiredSchemaVersion = 24
 
   cursor = connection.cursor()
 

capsulflask/db_model.py

@@ -106,11 +106,11 @@ class DBModel:
     return operatingSystems
 
   def vm_sizes_dict(self):
-    self.cursor.execute("SELECT id, dollars_per_month, vcpus, memory_mb, bandwidth_gb_per_month FROM vm_sizes")
+    self.cursor.execute("SELECT id, amount_per_month, vcpus, memory_mb, bandwidth_gb_per_month FROM vm_sizes")
 
     vmSizes = dict()
     for row in self.cursor.fetchall():
-      vmSizes[row[0]] = dict(dollars_per_month=row[1], vcpus=row[2], memory_mb=row[3], bandwidth_gb_per_month=row[4])
+      vmSizes[row[0]] = dict(amount_per_month=row[1], vcpus=row[2], memory_mb=row[3], bandwidth_gb_per_month=row[4])
 
     return vmSizes
 
@@ -140,13 +140,13 @@ class DBModel:
 
   def list_vms_for_account(self, email):
     self.cursor.execute(""" 
-      SELECT vms.id, vms.public_ipv4, vms.public_ipv6, vms.size, vms.shortterm, vms.os, vms.created, vms.deleted, vm_sizes.dollars_per_month
+      SELECT vms.id, vms.public_ipv4, vms.public_ipv6, vms.size, vms.shortterm, vms.os, vms.created, vms.deleted, vm_sizes.amount_per_month
         FROM vms JOIN vm_sizes on vms.size = vm_sizes.id
       WHERE vms.email = %s""", 
       (email, )
     )
     return list(map(
-      lambda x: dict(id=x[0], ipv4=x[1], ipv6=x[2], size=x[3], shortterm=x[4], os=x[5], created=x[6], deleted=x[7], dollars_per_month=x[8]), 
+      lambda x: dict(id=x[0], ipv4=x[1], ipv6=x[2], size=x[3], shortterm=x[4], os=x[5], created=x[6], deleted=x[7], amount_per_month=x[8]), 
       self.cursor.fetchall()
     ))
 
@@ -188,7 +188,7 @@ class DBModel:
   def get_vm_detail(self, email, id):
     self.cursor.execute(""" 
       SELECT vms.id, vms.public_ipv4, vms.public_ipv6, os_images.description, vms.created, vms.deleted,
-            vm_sizes.id, vms.shortterm, vm_sizes.dollars_per_month, vm_sizes.vcpus, vm_sizes.memory_mb, vm_sizes.bandwidth_gb_per_month
+            vm_sizes.id, vms.shortterm, vm_sizes.amount_per_month, vm_sizes.vcpus, vm_sizes.memory_mb, vm_sizes.bandwidth_gb_per_month
       FROM vms 
         JOIN os_images on vms.os = os_images.id
         JOIN vm_sizes on vms.size = vm_sizes.id
@@ -201,7 +201,7 @@ class DBModel:
 
     vm = dict(
       id=row[0], ipv4=row[1], ipv6=row[2], os_description=row[3], created=row[4], deleted=row[5],
-      size=row[6], shortterm=row[7], dollars_per_month=row[8], vcpus=row[9], memory_mb=row[10],
+      size=row[6], shortterm=row[7], amount_per_month=row[8], vcpus=row[9], memory_mb=row[10],
       bandwidth_gb_per_month=row[11],
     )
 
@@ -232,32 +232,32 @@ class DBModel:
 
   def list_payments_for_account(self, email):
     self.cursor.execute(""" 
-      SELECT id, dollars, invalidated, created
+      SELECT id, amount, invalidated, created
       FROM payments WHERE payments.email = %s""", 
       (email, )
     )
     return list(map(
-      lambda x: dict(id=x[0], dollars=x[1], invalidated=x[2], created=x[3]), 
+      lambda x: dict(id=x[0], amount=x[1], invalidated=x[2], created=x[3]), 
       self.cursor.fetchall()
     ))
   
-  def create_payment_session(self, payment_type, id, email, dollars):
+  def create_payment_session(self, payment_type, id, email, amount):
     self.cursor.execute(""" 
-      INSERT INTO payment_sessions (id, type, email, dollars)
+      INSERT INTO payment_sessions (id, type, email, amount)
       VALUES  (%s, %s, %s, %s)
       """, 
-      (id, payment_type, email, dollars)
+      (id, payment_type, email, amount)
     )
     self.connection.commit()
 
   def list_payment_sessions_for_account(self, email):
     self.cursor.execute(""" 
-      SELECT id, type, dollars, created
+      SELECT id, type, amount, created
       FROM payment_sessions WHERE email = %s""", 
       (email, )
     )
     return list(map(
-      lambda x: dict(id=x[0], type=x[1], dollars=x[2], created=x[3]), 
+      lambda x: dict(id=x[0], type=x[1], amount=x[2], created=x[3]), 
       self.cursor.fetchall()
     ))
 
@@ -276,21 +276,21 @@ class DBModel:
     return None
 
 
-  def consume_payment_session(self, payment_type, id, dollars):
+  def consume_payment_session(self, payment_type, id, amount):
-    self.cursor.execute("SELECT email, dollars FROM payment_sessions WHERE id = %s AND type = %s", (id, payment_type))
+    self.cursor.execute("SELECT email, amount FROM payment_sessions WHERE id = %s AND type = %s", (id, payment_type))
     row = self.cursor.fetchone()
     if row:
-      if int(row[1]) != int(dollars):
+      if int(row[1]) != int(amount):
         current_app.logger.warning(f"""
-          {payment_type} gave us a completed payment session with a different dollar amount than what we had recorded!!
+          {payment_type} gave us a completed payment session with a different {current_app.config['CURRENCY_NAME']} amount than what we had recorded!!
           id: {id}
           account: {row[0]}
           Recorded amount: {int(row[1])}
-          {payment_type} sent: {int(dollars)}
+          {payment_type} sent: {int(amount)}
         """)
         # not sure what to do here. For now just log and do nothing.
       self.cursor.execute( "DELETE FROM payment_sessions WHERE id = %s AND type = %s", (id, payment_type) )
-      self.cursor.execute( "INSERT INTO payments (email, dollars) VALUES (%s, %s) RETURNING id", (row[0], row[1]) )
+      self.cursor.execute( "INSERT INTO payments (email, amount) VALUES (%s, %s) RETURNING id", (row[0], row[1]) )
 
       if payment_type == "btcpay":
         payment_id = self.cursor.fetchone()[0]
@@ -326,10 +326,10 @@ class DBModel:
 
   def get_unresolved_btcpay_invoices(self):
     self.cursor.execute("""
-      SELECT unresolved_btcpay_invoices.id, payments.created, payments.dollars, unresolved_btcpay_invoices.email 
+      SELECT unresolved_btcpay_invoices.id, payments.created, payments.amount, unresolved_btcpay_invoices.email 
       FROM unresolved_btcpay_invoices JOIN payments on payment_id = payments.id
     """)
-    return list(map(lambda row: dict(id=row[0], created=row[1], dollars=row[2], email=row[3]), self.cursor.fetchall()))
+    return list(map(lambda row: dict(id=row[0], created=row[1], amount=row[2], email=row[3]), self.cursor.fetchall()))
 
   def get_account_balance_warning(self, email):
     self.cursor.execute("SELECT account_balance_warning FROM accounts WHERE email = %s", (email,))

capsulflask/payment.py

@@ -28,27 +28,27 @@ from capsulflask.shared import my_exec_info_message, get_account_balance, averag
 
 bp = Blueprint("payment", __name__, url_prefix="/payment")
 
-def validate_dollars(min: float, max: float):
+def validate_amount(min: float, max: float):
   errors = list()
-  dollars = None
+  amount = None
-  if "dollars" not in request.form:
+  if "amount" not in request.form:
-    errors.append("dollars is required")
+    errors.append("amount is required")
   else:
-    dollars = None
+    amount = None
     try:
-      dollars = float(request.form["dollars"])
+      amount = float(request.form["amount"])
     except:
-      errors.append("dollars must be a number")
+      errors.append("amount must be a number")
 
-    #current_app.logger.info(f"{str(dollars)}  {str(min)}  {str(dollars < min)}")
+    #current_app.logger.info(f"{str(amount)}  {str(min)}  {str(amount < min)}")
 
-    if dollars is not None and dollars < min:
+    if amount is not None and amount < min:
-      errors.append(f"dollars must be {format(min, '.2f')} or more")
+      errors.append(f"amount must be {format(min, '.2f')} or more")
-    elif dollars is not None and dollars >= max:
+    elif amount is not None and amount >= max:
-      errors.append(f"dollars must be less than {format(max, '.2f')}")
+      errors.append(f"amount must be less than {format(max, '.2f')}")
 
   current_app.logger.info(f"{len(errors)}  {errors}")
-  return (dollars, errors)
+  return (amount, errors)
 
 @bp.route("/btcpay", methods=("GET", "POST"))
 @account_required
@@ -64,14 +64,14 @@ def btcpay_payment():
       return redirect(url_for("console.account_balance"))
 
   if request.method == "POST":
-    dollars, errors = validate_dollars(0.01, 1000.0)
+    amount, errors = validate_amount(0.01, 1000.0)
     #current_app.logger.info(f"{len(errors)}  {errors}")
 
     if len(errors) == 0:
       try:
         invoice = current_app.config['BTCPAY_CLIENT'].create_invoice(dict(
-          price=float(dollars), 
+          price=float(amount), 
-          currency="USD",
+          currency=current_app.config['CURRENCY_BTCPAY_NAME'],
           itemDesc="Capsul Cloud Compute",
           transactionSpeed="high",
           redirectURL=f"{current_app.config['BASE_URL']}/console/account-balance",
@@ -86,9 +86,9 @@ def btcpay_payment():
 
       # print(invoice)
 
-      current_app.logger.info(f"created btcpay invoice_id={invoice['id']} ( {session['account']}, ${dollars} )")
+      current_app.logger.info(f"created btcpay invoice_id={invoice['id']} ( {session['account']}, {current_app.config['CURRENCY_SYMBOL']}{amount} )")
 
-      get_model().create_payment_session("btcpay", invoice["id"], session["account"], dollars)
+      get_model().create_payment_session("btcpay", invoice["id"], session["account"], amount)
 
       return redirect(invoice["url"])
 
@@ -115,18 +115,18 @@ def poll_btcpay_session(invoice_id):
     return [503, "error was thrown when contacting btcpay server"]
     
 
-  if invoice['currency'] != "USD":
+  if invoice['currency'] != current_app.config['CURRENCY_BTCPAY_NAME']:
     return [400, "invalid currency"]
   
-  dollars = invoice['price']
+  amount = invoice['price']
 
-  current_app.logger.info(f"poll_btcpay_session invoice_id={invoice_id}, status={invoice['status']} dollars={dollars}")
+  current_app.logger.info(f"poll_btcpay_session invoice_id={invoice_id}, status={invoice['status']} amount={amount}")
 
   if invoice['status'] == "paid" or invoice['status'] == "confirmed" or invoice['status'] == "complete":
-    success_account = get_model().consume_payment_session("btcpay", invoice_id, dollars)
+    success_account = get_model().consume_payment_session("btcpay", invoice_id, amount)
         
     if success_account:
-      current_app.logger.info(f"{success_account} paid ${dollars} successfully (btcpay_invoice_id={invoice_id})")
+      current_app.logger.info(f"{success_account} paid {current_app.config['CURRENCY_SYMBOL']}{amount} successfully (btcpay_invoice_id={invoice_id})")
 
   if invoice['status'] == "complete":
     resolved_invoice_email = get_model().btcpay_invoice_resolved(invoice_id, True)
@@ -188,11 +188,11 @@ def stripe_payment():
   errors = list()
 
   if request.method == "POST":
-    dollars, errors = validate_dollars(0.5, 1000000)
+    amount, errors = validate_amount(0.5, 1000000)
 
     if len(errors) == 0:
 
-      current_app.logger.info(f"creating stripe checkout session for {session['account']}, ${dollars}")
+      current_app.logger.info(f"creating stripe checkout session for {session['account']}, {current_app.config['CURRENCY_SYMBOL']}{amount}")
 
       checkout_session = stripe.checkout.Session.create(
         success_url=current_app.config['BASE_URL'] + "/payment/stripe/success?session_id={CHECKOUT_SESSION_ID}",
@@ -204,16 +204,16 @@ def stripe_payment():
             "name": "Capsul Cloud Compute",
             "images": [current_app.config['BASE_URL']+"/static/capsul-product-image.png"],
             "quantity": 1,
-            "currency": "usd",
+            "currency": current_app.config['CURRENCY_SWIPE_NAME'],
-            "amount": int(dollars*100)
+            "amount": int(amount*100)
           }
         ]
       )
       stripe_checkout_session_id = checkout_session['id']
 
-      current_app.logger.info(f"stripe_checkout_session_id={stripe_checkout_session_id} ( {session['account']}, ${dollars} )")
+      current_app.logger.info(f"stripe_checkout_session_id={stripe_checkout_session_id} ( {session['account']}, {current_app.config['CURRENCY_SYMBOL']}{amount} )")
 
-      get_model().create_payment_session("stripe", stripe_checkout_session_id, session["account"], dollars)
+      get_model().create_payment_session("stripe", stripe_checkout_session_id, session["account"], amount)
 
       # We can't do this because stripe requires a bunch of server-authenticated data to be sent in the hash
       # of the URL. I briefly looked into reverse-engineering their proprietary javascript in order to try to figure out
@@ -280,17 +280,17 @@ def validate_stripe_checkout_session(stripe_checkout_session_id):
 
     if checkout_session and 'id' in checkout_session and checkout_session['id'] == stripe_checkout_session_id:
       cents = checkout_session['amount_total']
-      dollars = decimal.Decimal(cents)/100
+      amount = decimal.Decimal(cents)/100
 
       #consume_payment_session deletes the checkout session row and inserts a payment row
       # its ok to call consume_payment_session more than once because it only takes an action if the session exists
-      success_email = get_model().consume_payment_session("stripe", stripe_checkout_session_id, dollars)
+      success_email = get_model().consume_payment_session("stripe", stripe_checkout_session_id, amount)
 
       if success_email is not None:
         check_if_shortterm_flag_can_be_unset(success_email)
 
       if success_email:
-        return dict(email=success_email, dollars=dollars)
+        return dict(email=success_email, amount=amount)
 
   return None
 
@@ -304,7 +304,7 @@ def success():
     for _ in range(0, 5):
       paid = validate_stripe_checkout_session(stripe_checkout_session_id)
       if paid:
-        current_app.logger.info(f"{paid['email']} paid ${paid['dollars']} successfully (stripe_checkout_session_id={stripe_checkout_session_id})")
+        current_app.logger.info(f"{paid['email']} paid {current_app.config['CURRENCY_SYMBOL']}{paid['amount']} successfully (stripe_checkout_session_id={stripe_checkout_session_id})")
         
         return redirect(url_for("console.account_balance"))
       else:
@@ -325,14 +325,14 @@ def success():
 #       secret=current_app.config['STRIPE_WEBHOOK_SECRET']
 #     )
 #     if event['type'] == 'checkout.session.completed':
-#       dollars = event['data']['object']['amount_total']
+#       amount = event['data']['object']['amount_total']
 #       stripe_checkout_session_id = event['data']['object']['id']
 
 #       #consume_payment_session deletes the checkout session row and inserts a payment row
 #       # its ok to call consume_payment_session more than once because it only takes an action if the session exists
-#       success_account = get_model().consume_payment_session("stripe", stripe_checkout_session_id, dollars)
+#       success_account = get_model().consume_payment_session("stripe", stripe_checkout_session_id, amount)
 #       if success_account:
-#         print(f"{success_account} paid ${dollars} successfully (stripe_checkout_session_id={stripe_checkout_session_id})")
+#         print(f"{success_account} paid {current_app.config['CURRENCY_SYMBOL']}{amount} successfully (stripe_checkout_session_id={stripe_checkout_session_id})")
     
 #     return jsonify({'status': 'success'})
 #   except ValueError as e:

capsulflask/schema_migrations/24_down_generic_currency.sql

@@ -0,0 +1,6 @@
+
+ALTER TABLE vm_sizes RENAME amount_per_month TO dollars_per_month;
+ALTER TABLE payments RENAME amount TO dollars;
+ALTER TABLE payment_sessions RENAME amount TO dollars;
+
+UPDATE schemaversion SET version = 23;

capsulflask/schema_migrations/24_up_generic_currency.sql

@@ -0,0 +1,6 @@
+
+ALTER TABLE vm_sizes RENAME dollars_per_month TO amount_per_month;
+ALTER TABLE payments RENAME dollars TO amount;
+ALTER TABLE payment_sessions RENAME dollars TO amount;
+
+UPDATE schemaversion SET version = 24;

capsulflask/shared.py

@@ -62,14 +62,14 @@ def authorized_as_hub(headers):
 
 def get_account_balance(vms, payments, as_of):
 
-  vm_cost_dollars = 0.0
+  vm_cost_amount = 0.0
   for vm in vms:
     vm_months = get_vm_months_float(vm, as_of)
-    vm_cost_dollars += vm_months * float(vm["dollars_per_month"])
+    vm_cost_amount += vm_months * float(vm["amount_per_month"])
 
-  payment_dollars_total = float( sum(map(lambda x: 0 if x["invalidated"] else x["dollars"], payments)) )
+  payment_amount_total = float( sum(map(lambda x: 0 if x["invalidated"] else x["amount"], payments)) )
 
-  return payment_dollars_total - vm_cost_dollars
+  return payment_amount_total - vm_cost_amount
 
 
 average_number_of_days_in_a_month = 30.44

capsulflask/templates/account-balance.html

@@ -4,7 +4,7 @@
 
 {% block content %}
 <div class="row third-margin">
-  <h1>Account Balance: ${{ account_balance }}</h1>
+  <h1>Account Balance: {{config["CURRENCY_SYMBOL"]}}{{ account_balance }}</h1>
 </div>
 <div class="half-margin">
  
@@ -30,7 +30,7 @@
         <tbody>
           {% for payment in payments %}
             <tr>
-              <td class="{{ payment['class_name'] }}">${{ payment["dollars"] }}</td>
+              <td class="{{ payment['class_name'] }}">{{config["CURRENCY_SYMBOL"]}}{{ payment["amount"] }}</td>
               <td class="{{ payment['class_name'] }}">{{payment["created"]}}</td>
             </tr>
           {% endfor %}
@@ -81,9 +81,9 @@
           <th>id</th>
           <th>created</th>
           <th>deleted</th>
-          <th>$/month</th>
+          <th>{{config["CURRENCY_SYMBOL"]}}/month</th>
           <th>months</th>
-          <th>$ billed</th>
+          <th>{{config["CURRENCY_SYMBOL"]}} billed</th>
         </tr>
       </thead>
       <tbody>
@@ -92,9 +92,9 @@
             <td>{{ vm["id"] }}</td>
             <td>{{ vm["created"] }}</td>
             <td>{{ vm["deleted"] }}</td>
-            <td>${{ vm["dollars_per_month"] }}</td>
+            <td>{{config["CURRENCY_SYMBOL"]}}{{ vm["amount_per_month"] }}</td>
             <td>{{ vm["months"] }}</td>
-            <td>${{ vm["dollars"] }}</td>
+            <td>{{config["CURRENCY_SYMBOL"]}}{{ vm["amount"] }}</td>
           </tr>
         {% endfor %}
       </tbody>

capsulflask/templates/btcpay.html

@@ -13,10 +13,10 @@
   <form method="POST" action="/payment/btcpay">
     <div class="row">
       <span>
-        <label for="btcpay-input-price">$</label>
+        <label for="btcpay-input-price">{{config['CURRENCY_SYMBOL']}}</label>
         <input 
           id="btcpay-input-price" 
-          name="dollars" 
+          name="amount" 
           type="text" 
         />
       </span>

capsulflask/templates/capsul-detail.html

@@ -76,8 +76,8 @@
         {% endif  %}
       </div>
       <div class="row justify-start">
-        <label class="align" for="dollars_per_month">Monthly Cost</label>
+        <label class="align" for="amount_per_month">Monthly Cost</label>
-        <span id="dollars_per_month">${{ vm['dollars_per_month'] }}</span>
+        <span id="amount_per_month">{{config['CURRENCY_SYMBOL']}}{{ vm['amount_per_month'] }}</span>
       </div>
       <div class="row justify-start">
         <label class="align" for="ipv4">IPv4 Address</label>

capsulflask/templates/create-capsul.html

@@ -13,19 +13,19 @@
     ============
     type     monthly*  cpus  mem     ssd   net*
     -----    -------   ----  ---     ---   ---
-    f1-xs    $5.00     1     512M    25G   .5TB
+    f1-xs    {{config['CURRENCY_SYMBOL']}}5.00     1     512M    25G   .5TB
-    f1-s     $7.50     1     1024M   25G   1TB
+    f1-s     {{config['CURRENCY_SYMBOL']}}7.50     1     1024M   25G   1TB
-    f1-m     $12.50    1     2048M   25G   2TB
+    f1-m     {{config['CURRENCY_SYMBOL']}}12.50    1     2048M   25G   2TB
-    f1-l     $20.00    2     3072M   25G   3TB
+    f1-l     {{config['CURRENCY_SYMBOL']}}20.00    2     3072M   25G   3TB
-    f1-x     $27.50    3     4096M   25G   4TB
+    f1-x     {{config['CURRENCY_SYMBOL']}}27.50    3     4096M   25G   4TB
-    f1-xx    $50.00    4     8192M   25G   5TB
+    f1-xx    {{config['CURRENCY_SYMBOL']}}50.00    4     8192M   25G   5TB
 
     * all VMs come standard with one public IPv4 address
     * vms are billed for a minimum of 1 hour upon creation</pre>
   <pre>
-    Your <a href="/console/account-balance">current account balance</a>: ${{ account_balance }} {% if account_balance != account_balance_in_one_month  %} 
+    Your <a href="/console/account-balance">current account balance</a>: {{config['CURRENCY_SYMBOL']}}{{ account_balance }} {% if account_balance != account_balance_in_one_month  %} 
 
-    Projected account balance in one month: ${{ account_balance_in_one_month }}{% endif %}
+    Projected account balance in one month: {{config['CURRENCY_SYMBOL']}}{{ account_balance_in_one_month }}{% endif %}
   </pre>
   {% if cant_afford  %} 
   <p>Please <a href="/console/account-balance">fund your account</a> in order to create Capsuls</p>

capsulflask/templates/pricing.html

@@ -22,7 +22,7 @@
       {% for vm_size_key, vm_size in vm_sizes.items() %}
         <tr>
           <td>{{ vm_size_key }}</td>
-          <td>${{ vm_size['dollars_per_month'] }}</td>
+          <td>{{config['CURRENCY_SYMBOL']}}{{ vm_size['amount_per_month'] }}</td>
           <td>{{ vm_size['vcpus'] }}</td>
           <td>{{ vm_size['memory_mb'] }}</td>
           <td>25G</td>

capsulflask/templates/stripe.html

@@ -26,8 +26,8 @@
   <div class="row half-margin">
     <form method="post">
       <div class="row justify-start">
-        <label for="dollars">$</label>
+        <label for="amount">{{config['CURRENCY_SYMBOL']}}</label>
-        <input type="number" id="dollars" name="dollars"></input> 
+        <input type="number" id="amount" name="amount"></input> 
       </div>
       <div class="row justify-end">
         <input type="submit" value="Pay With Stripe">

docs/configuration.md

@@ -63,6 +63,16 @@ BTCPAY_URL="https://beeteeceepae2.cyberia.club"
 BTCPAY_PRIVATE_KEY='-----BEGIN EC PRIVATE KEY-----\n<redacted>\n-----END EC PRIVATE KEY-----'
 ```
 
+## <a name="currency"></a>Configuring Currency
+By default, capsul operates in USD. You can change that with the currency configuration settings:
+```
+CURRENCY_NAME=dollar <the name of the currency, singular>
+CURRENCY_SYMBOL=$ <the symbol to refer to the currency>
+CURRENCY_STRIPE_NAME=usd <a string stripe uses to identify what currency a payment is being requested in. £ is gbp>
+CURRENCY_BTCPAY_NAME=USD <likewise for btcpay>
+CURRENCY_STRIPE_CONVERSION_FACTOR=100 <stripe wants to work in the smallest unit - cents, pennies etc>
+```
+**Don't change the currency once capsul is up and running!** Amounts of money are stored in the database as plain numbers and won't be converted, so if someone has $10 and you move to using gbp they'll now have £10 in their account.
 ## <a name="config_that_lives_in_db"></a>Configuration-type-stuff that lives in the database 
 
   - `hosts` table: