def get(request):
""" Respond to the "/user/get" API call.
"""
try:
# Extract our payload from the request parameters.
request_payload = api_helper.process_request(request)
if "error" in request_payload: return request_payload['error']
# Check that the required fields are present.
error = api_helper.check_fields(request_payload,
required_fields=["session_key"])
if error != None: return error
# Retrieve the user's details, including a list of all the user's
# accounts.
user = request_payload['session'].user
response_payload = {'user_id' : user.user_id,
'name' : user.name,
'accounts' : []} # initially.
for account in Account.objects.filter(user_id=user.user_id):
account_id = \
account_helper.make_account_id(account.user_id,
account.associated_user_id,
account.suffix)
response_payload['accounts'].append(account_id)
# Finally, return the user's details back to the caller.
return api_helper.response(request_payload, response_payload)
except:
traceback.print_exc()
return HttpResponseServerError()
def enter_transaction(request):
""" Respond to the "/admin/account/transaction" URL.
We let the user enter a transaction into the system.
"""
if request.method == "GET":
# We're displaying the form for the first time -> set up the default
# values.
err_msg = None
type = "P"
user_id = ""
associated_user_id = ""
suffix = ""
other_user_id = ""
other_associated_user_id = ""
other_suffix = ""
amount = ""
description = ""
elif request.method == "POST":
# Respond to the user submitting our form.
if request.POST.get("cancel") == "Cancel":
return HttpResponseRedirect(reverse("tahua.admin_interface." +
"views.main.main"))
err_msg = None # initially.
type = request.POST['type']
user_id = request.POST['user_id']
associated_user_id = request.POST['associated_user_id']
suffix = request.POST['suffix']
other_user_id = request.POST['other_user_id']
other_associated_user_id = request.POST['other_associated_user_id']
other_suffix = request.POST['other_suffix']
amount = request.POST['amount']
description = request.POST['description']
account_id = account_helper.make_account_id(user_id,
associated_user_id,
suffix)
if not account_helper.is_valid_account_id(account_id):
err_msg = "You must enter a valid account identifier."
if user_id not in ["", None]:
try:
user = User.objects.get(user_id=user_id)
except User.DoesNotExist:
err_msg = "There is no user with ID " + user_id
if associated_user_id not in ["", None]:
try:
user = User.objects.get(user_id=associated_user_id)
except User.DoesNotExist:
err_msg = "There is no user with ID " + associated_user_id
if err_msg == None:
try:
dec_amount = decimal.Decimal(amount)
except decimal.InvalidOperation:
err_msg = "Invalid amount."
if err_msg == None:
if type not in [Transaction.TYPE_DEPOSIT,
Transaction.TYPE_WITHDRAWAL,
Transaction.TYPE_PAYMENT,
Transaction.TYPE_REVERSAL,
Transaction.TYPE_ADJUSTMENT]:
err_msg = "Please select a valid transaction type."
if err_msg == None:
if type == Transaction.TYPE_PAYMENT:
other_account_id = \
account_helper.make_account_id(other_user_id,
other_associated_user_id,
other_suffix)
if not account_helper.is_valid_account_id(other_account_id):
err_msg = "You must enter a valid other account identifier."
# If the entered data was accepted, enter the transaction into the
# system.
if err_msg == None:
account = account_helper.get_or_create_account(account_id)
if type == Transaction.TYPE_PAYMENT:
other_account = \
account_helper.get_or_create_account(other_account_id)
else:
other_account = None
meta_data = {}
if description != "":
meta_data['description'] = description
if type == Transaction.TYPE_PAYMENT:
dec_amount = -dec_amount # Deduct amount from source account.
transaction = Transaction()
transaction.account = account
transaction.other_account = other_account
transaction.timestamp = datetime.datetime.now()
transaction.type = type
transaction.amount = dec_amount
transaction.metadata = json.dumps(meta_data)
transaction.save()
# If the user is entering a payment, enter the reverse transaction
# at the same time.
if type == Transaction.TYPE_PAYMENT:
transaction = Transaction()
transaction.account = other_account
transaction.other_account = account
transaction.timestamp = datetime.datetime.now()
transaction.type = type
transaction.amount = -dec_amount
transaction.metadata = json.dumps(meta_data)
transaction.save()
# Finally, tell the user about the entered transaction.
if type == Transaction.TYPE_PAYMENT:
msg = utils.formatDecimalAsMoney(-dec_amount) \
+ " has been transferred from " + account.describe() \
+ " to " + other_account.describe() + "."
else:
msg = 'A transaction of type "' + transaction.type_to_string() \
+ '" to the value of ' \
+ utils.formatDecimalAsMoney(dec_amount) \
+ ' has been entered against the ' \
+ account.describe()
return render_to_response("admin_interface/" +
"transaction_entered.html",
{'msg' : msg},
context_instance=RequestContext(request))
# If we get here, display the form to the user.
return render_to_response("admin_interface/enter_transaction.html",
{'err_msg' : err_msg,
'type' : type,
'user_id' : user_id,
'associated_user_id' : associated_user_id,
'suffix' : suffix,
'other_user_id' : other_user_id,
'other_associated_user_id' :
other_associated_user_id,
'other_suffix' : other_suffix,
'amount' : amount,
'description' : description},
context_instance=RequestContext(request))
def get(request):
""" Respond to the "/account/get" API call.
"""
try:
# Extract our payload from the request parameters.
request_payload = api_helper.process_request(request)
if "error" in request_payload: return request_payload['error']
# Check that the required fields are present.
error = api_helper.check_fields(request_payload,
required_fields=["session_key",
"account_id"])
if error != None: return error
session = request_payload['session']
account_id = request_payload['fields']['account_id']
if not account_helper.is_valid_account_id(account_id):
return api_helper.error(request_payload,
api_errors.INVALID_ACCOUNT_ID)
# Make sure the user is allowed to access the given account.
if account_id != None:
if session.user.user_id != account_id.get("user_id"):
return api_helper.error(request_payload,
api_errors.UNAUTHORIZED)
# Get the desired account, if it exists.
account = account_helper.get_account(account_id)
# Build our response payload, based on the account's details. We start
# with the account record itself.
response_payload = {}
response_payload['account'] = {}
if account != None:
response_payload['account']['exists'] = 1
else:
response_payload['account']['exists'] = 0
# Add the account's current balance.
balance = decimal.Decimal("0.00")
if account != None:
transactions = account.transaction_set.all().order_by("timestamp")
for transaction in transactions:
balance = balance + transaction.amount
response_payload['account']['balance'] = balance
# Add the list of transactions for this account.
response_payload['account']['transactions'] = []
if account != None:
transactions = account.transaction_set.all().order_by("timestamp")
for transaction in transactions:
timestamp = transaction.timestamp.isoformat()
amount = transaction.amount
metadata = transaction.get_metadata()
transaction_data = {'timestamp' : timestamp,
'amount' : amount,
'meta_data' : metadata}
other_account = transaction.other_account
if other_account != None:
other_account_id = account_helper.make_account_id(
other_account.user_id,
other_account.associated_user_id,
other_account.suffix)
transaction_data['other_account'] = other_account_id
response_payload['account']['transactions'].append(
transaction_data)
# Add the account's metadata. Note that we exclude the password and pin
# number, for security reasons.
if account != None:
metadata = account.get_metadata()
else:
metadata = {}
if "password" in metadata: del metadata['password']
if "pin_number" in metadata: del metadata['pin_number']
response_payload['account']['meta_data'] = metadata
# Add the account's policies, taking into account each policy's default
# value, the user-specific override (if any), and account-specific
# override (if any).
policies = {}
for policy in Policy.objects.all():
default = policy.get_default()
try:
override = PolicyUserOverride.objects.get(policy=policy,
user=session.user)
user_override = override.get_override()
except PolicyUserOverride.DoesNotExist:
user_override = None
if account != None:
try:
override = \
PolicyAccountOverride.objects.get(policy=policy,
account=account)
account_override = override.get_override()
except PolicyAccountOverride.DoesNotExist:
account_override = None
else:
account_override = None
if account_override != None:
value = account_override
elif user_override != None:
value = user_override
else:
value = default
policies[policy.name] = value
response_payload['account']['policies'] = policies
# Add the account's update ID.
if account != None:
response_payload['update_id'] = account.update_id
else:
response_payload['update_id'] = 0
# Finally, return the response payload back to the caller.
return api_helper.response(request_payload, response_payload)
except:
traceback.print_exc()
return HttpResponseServerError()
